def clean_inputs(data):
"""Clean BED input files to avoid overlapping segments that cause downstream issues.
Per-merges inputs to avoid needing to call multiple times during later parallel steps.
"""
if not utils.get_in(data, ("config", "algorithm", "variant_regions_orig")):
data["config"]["algorithm"]["variant_regions_orig"] = dd.get_variant_regions(data)
clean_vr = clean_file(dd.get_variant_regions(data), data)
merged_vr = merge_overlaps(clean_vr, data)
data["config"]["algorithm"]["variant_regions"] = clean_vr
data["config"]["algorithm"]["variant_regions_merged"] = merged_vr
if dd.get_coverage(data):
if not utils.get_in(data, ("config", "algorithm", "coverage_orig")):
data["config"]["algorithm"]["coverage_orig"] = dd.get_coverage(data)
clean_cov_bed = clean_file(dd.get_coverage(data), data, prefix="cov-", simple=True)
merged_cov_bed = merge_overlaps(clean_cov_bed, data)
data["config"]["algorithm"]["coverage"] = clean_cov_bed
data["config"]["algorithm"]["coverage_merged"] = merged_cov_bed
if 'seq2c' in get_svcallers(data):
seq2c_ready_bed = prep_seq2c_bed(data)
if not seq2c_ready_bed:
logger.warning("Can't run Seq2C without a svregions or variant_regions BED file")
else:
data["config"]["algorithm"]["seq2c_bed_ready"] = seq2c_ready_bed
return data
def postprocess_alignment(data):
"""Perform post-processing steps required on full BAM files.
Prepares list of callable genome regions allowing subsequent parallelization.
"""
data = cwlutils.normalize_missing(utils.to_single_data(data))
data = cwlutils.unpack_tarballs(data, data)
bam_file = data.get("align_bam") or data.get("work_bam")
ref_file = dd.get_ref_file(data)
if vmulti.bam_needs_processing(data) and bam_file and bam_file.endswith(".bam"):
out_dir = utils.safe_makedir(os.path.join(dd.get_work_dir(data), "align",
dd.get_sample_name(data)))
bam_file_ready = os.path.join(out_dir, os.path.basename(bam_file))
if not utils.file_exists(bam_file_ready):
utils.symlink_plus(bam_file, bam_file_ready)
bam.index(bam_file_ready, data["config"])
covinfo = callable.sample_callable_bed(bam_file_ready, ref_file, data)
callable_region_bed, nblock_bed = \
callable.block_regions(covinfo.raw_callable, bam_file_ready, ref_file, data)
data["regions"] = {"nblock": nblock_bed,
"callable": covinfo.raw_callable,
"sample_callable": covinfo.callable,
"mapped_stats": readstats.get_cache_file(data)}
data["depth"] = covinfo.depth_files
data = coverage.assign_interval(data)
data = samtools.run_and_save(data)
data = recalibrate.prep_recal(data)
data = recalibrate.apply_recal(data)
elif dd.get_variant_regions(data):
callable_region_bed, nblock_bed = \
callable.block_regions(dd.get_variant_regions(data), bam_file, ref_file, data)
data["regions"] = {"nblock": nblock_bed, "callable": dd.get_variant_regions(data),
"sample_callable": dd.get_variant_regions(data)}
return [[data]]
def _run_cnvkit_shared(data, test_bams, background_bams, access_file, work_dir,
background_name=None):
"""Shared functionality to run CNVkit.
"""
ref_file = dd.get_ref_file(data)
raw_work_dir = os.path.join(work_dir, "raw")
out_base = os.path.splitext(os.path.basename(test_bams[0]))[0].split(".")[0]
background_cnn = "%s_background.cnn" % (background_name if background_name else "flat")
files = {"cnr": os.path.join(raw_work_dir, "%s.cnr" % out_base),
"cns": os.path.join(raw_work_dir, "%s.cns" % out_base),
"back_cnn": os.path.join(raw_work_dir, background_cnn)}
if not utils.file_exists(files["cnr"]):
if os.path.exists(raw_work_dir):
shutil.rmtree(raw_work_dir)
with tx_tmpdir(data, work_dir) as tx_work_dir:
# pick targets, anti-targets and access files based on analysis type
# http://cnvkit.readthedocs.org/en/latest/nonhybrid.html
cov_interval = dd.get_coverage_interval(data)
base_regions = dd.get_variant_regions(data)
# For genome calls, subset to regions within 10kb of genes
if cov_interval == "genome":
base_regions = annotate.subset_by_genes(base_regions, data,
work_dir, pad=1e4)
raw_target_bed = bedutils.merge_overlaps(base_regions, data,
out_dir=work_dir)
target_bed = annotate.add_genes(raw_target_bed, data)
# bail out if we ended up with no regions
if not utils.file_exists(target_bed):
return {}
if cov_interval == "amplicon":
target_opts = ["--targets", target_bed, "--access", target_bed]
elif cov_interval == "genome":
target_opts = ["--targets", target_bed, "--access", dd.get_variant_regions(data)]
else:
target_opts = ["--targets", target_bed, "--access", access_file]
cores = min(tz.get_in(["config", "algorithm", "num_cores"], data, 1),
len(test_bams) + len(background_bams))
cmd = [_get_cmd(), "batch"] + \
test_bams + ["-n"] + background_bams + ["-f", ref_file] + \
target_opts + \
["-d", tx_work_dir, "--split", "-p", str(cores),
"--output-reference", os.path.join(tx_work_dir, background_cnn)]
at_avg, at_min, t_avg = _get_antitarget_size(access_file, target_bed)
if at_avg:
cmd += ["--antitarget-avg-size", str(at_avg), "--antitarget-min-size", str(at_min),
"--target-avg-size", str(t_avg)]
local_sitelib = os.path.join(install.get_defaults().get("tooldir", "/usr/local"),
"lib", "R", "site-library")
cmd += ["--rlibpath", local_sitelib]
do.run(cmd, "CNVkit batch")
shutil.move(tx_work_dir, raw_work_dir)
for ftype in ["cnr", "cns"]:
if not os.path.exists(files[ftype]):
raise IOError("Missing CNVkit %s file: %s" % (ftype, files[ftype]))
return files
def _get_variant_regions(data):
out = dd.get_variant_regions(data) or dd.get_sample_callable(data)
# Only need to merge for variant region inputs, not callable BED regions which don't overlap
if merged and dd.get_variant_regions(data):
merged_out = dd.get_variant_regions_merged(data)
if merged_out:
out = merged_out
else:
out = merge_overlaps(out, data)
return out
def sample_callable_bed(bam_file, ref_file, data):
"""Retrieve callable regions for a sample subset by defined analysis regions.
"""
from bcbio.heterogeneity import chromhacks
CovInfo = collections.namedtuple("CovInfo",
"callable, raw_callable, depth_files")
noalt_calling = "noalt_calling" in dd.get_tools_on(
data) or "altcontigs" in dd.get_exclude_regions(data)
def callable_chrom_filter(r):
"""Filter to callable region, potentially limiting by chromosomes.
"""
return r.name == "CALLABLE" and (not noalt_calling
or chromhacks.is_nonalt(r.chrom))
out_file = "%s-callable_sample.bed" % os.path.splitext(bam_file)[0]
with shared.bedtools_tmpdir(data):
callable_bed, depth_files = coverage.calculate(bam_file, data)
input_regions_bed = dd.get_variant_regions(data)
if not utils.file_uptodate(out_file, callable_bed):
with file_transaction(data, out_file) as tx_out_file:
callable_regions = pybedtools.BedTool(callable_bed)
filter_regions = callable_regions.filter(callable_chrom_filter)
if input_regions_bed:
if not utils.file_uptodate(out_file, input_regions_bed):
input_regions = pybedtools.BedTool(input_regions_bed)
filter_regions.intersect(
input_regions,
nonamecheck=True).saveas(tx_out_file)
else:
filter_regions.saveas(tx_out_file)
return CovInfo(out_file, callable_bed, depth_files)
def process_intervals(data):
"""Prepare intervals file"""
bed_file = regions.get_sv_bed(data)
if not bed_file:
bed_file = bedutils.clean_file(dd.get_variant_regions(data), data)
if not bed_file:
return None
basename = os.path.splitext(bed_file)[0]
ready_file = basename + ".txt"
if os.path.exists(ready_file):
return ready_file
optimized_bed = basename + ".optimized.bed"
rscript = utils.Rscript_cmd("r36")
interval_file_r = utils.R_package_script("r36", "PureCN",
"extdata/IntervalFile.R")
ref_file = dd.get_ref_file(data)
mappability_resource = dd.get_variation_resources(
data)["purecn_mappability"]
genome = dd.get_genome_build(data)
cmd = [
rscript, interval_file_r, "--infile", bed_file, "--fasta", ref_file,
"--outfile", ready_file, "--offtarget", "--genome", genome, "--export",
optimized_bed, "--mappability", mappability_resource
]
try:
cmd_line = "export R_LIBS_USER=%s && %s && %s" % (utils.R_sitelib(
env="r36"), utils.get_R_exports(env="r36"), " ".join(
[str(x) for x in cmd]))
do.run(cmd_line, "PureCN intervals")
except subprocess.CalledProcessError as msg:
logger.info("PureCN failed to prepare intervals")
logger.debug("Saved PureCN interval file into " + ready_file)
return ready_file
def filter_multimappers(align_file, data):
"""
Filtering a BWA alignment file for uniquely mapped reads, from here:
https://bioinformatics.stackexchange.com/questions/508/obtaining-uniquely-mapped-reads-from-bwa-mem-alignment
"""
config = dd.get_config(data)
type_flag = "" if bam.is_bam(align_file) else "S"
base, ext = os.path.splitext(align_file)
out_file = base + ".unique" + ext
bed_file = dd.get_variant_regions(data) or dd.get_sample_callable(data)
bed_cmd = '-L {0}'.format(bed_file) if bed_file else " "
if utils.file_exists(out_file):
return out_file
base_filter = '-F "not unmapped {paired_filter} and not duplicate and [XA] == null and [SA] == null and not supplementary " '
if bam.is_paired(align_file):
paired_filter = "and paired and proper_pair"
else:
paired_filter = ""
filter_string = base_filter.format(paired_filter=paired_filter)
sambamba = config_utils.get_program("sambamba", config)
num_cores = dd.get_num_cores(data)
with file_transaction(out_file) as tx_out_file:
cmd = ('{sambamba} view -h{type_flag} '
'--nthreads {num_cores} '
'-f bam {bed_cmd} '
'{filter_string} '
'{align_file} '
'> {tx_out_file}')
message = "Removing multimapped reads from %s." % align_file
do.run(cmd.format(**locals()), message)
bam.index(out_file, config)
return out_file
def prep_seq2c_bed(data):
"""Selecting the bed file, cleaning, and properly annotating for Seq2C
"""
bed_file = regions.get_sv_bed(data)
if bed_file:
bed_file = bedutils.clean_file(bed_file, data, prefix="svregions-")
else:
bed_file = bedutils.clean_file(dd.get_variant_regions(data), data)
if not bed_file:
return None
col_num = bt.BedTool(bed_file).field_count()
if col_num < 4:
annotated_file = annotate.add_genes(bed_file, data, max_distance=0)
if annotated_file == bed_file:
raise ValueError(
"BED file for Seq2C must be annotated with gene names, "
"however the input BED is 3-columns and we have no transcript "
"data to annotate with " + bed_file)
annotated_file = annotate.gene_one_per_line(annotated_file, data)
else:
annotated_file = bed_file
ready_file = "%s-seq2cclean.bed" % (utils.splitext_plus(annotated_file)[0])
if not utils.file_uptodate(ready_file, annotated_file):
bed = bt.BedTool(annotated_file)
if col_num > 4 and col_num != 8:
bed = bed.cut(range(4))
bed = bed.filter(lambda x: x.name not in ["", ".", "-"])
with file_transaction(data, ready_file) as tx_out_file:
bed.saveas(tx_out_file)
logger.debug("Saved Seq2C clean annotated ready input BED into " +
ready_file)
return ready_file
def calculate_offtarget(bam_file, ref_file, data):
"""Generate file of offtarget read counts for inputs with variant regions.
"""
vrs_file = dd.get_variant_regions(data)
if vrs_file:
out_file = "%s-offtarget-stats.yaml" % os.path.splitext(bam_file)[0]
if not utils.file_exists(out_file):
with file_transaction(data, out_file) as tx_out_file:
offtarget_regions = "%s-regions.bed" % utils.splitext_plus(
out_file)[0]
ref_bed = get_ref_bedtool(ref_file, data["config"])
ref_bed.subtract(pybedtools.BedTool(vrs_file),
nonamecheck=True).saveas(offtarget_regions)
cmd = (
"samtools view -u {bam_file} -L {offtarget_regions} | "
"bedtools intersect -abam - -b {offtarget_regions} -f 1.0 -bed | wc -l"
)
offtarget_count = int(
subprocess.check_output(cmd.format(**locals()),
shell=True))
cmd = "samtools idxstats {bam_file} | awk '{{s+=$3}} END {{print s}}'"
mapped_count = int(
subprocess.check_output(cmd.format(**locals()),
shell=True))
with open(tx_out_file, "w") as out_handle:
yaml.safe_dump(
{
"mapped": mapped_count,
"offtarget": offtarget_count
},
out_handle,
allow_unicode=False,
default_flow_style=False)
return out_file
def get_base_cnv_regions(data,
work_dir,
genome_default="transcripts1e4",
include_gene_names=True):
"""Retrieve set of target regions for CNV analysis.
Subsets to extended transcript regions for WGS experiments to avoid
long runtimes.
"""
cov_interval = dd.get_coverage_interval(data)
base_regions = get_sv_bed(data, include_gene_names=include_gene_names)
# if we don't have a configured BED or regions to use for SV caling
if not base_regions:
# For genome calls, subset to regions near genes as targets
if cov_interval == "genome":
base_regions = get_sv_bed(data,
genome_default,
work_dir,
include_gene_names=include_gene_names)
if base_regions:
base_regions = remove_exclude_regions(base_regions,
base_regions, [data])
# Finally, default to the defined variant regions
if not base_regions:
base_regions = dd.get_variant_regions(
data) or dd.get_sample_callable(data)
return bedutils.clean_file(base_regions, data)
def _prep_bed(data, work_dir):
"""Selecting the bed file, cleaning, and properly annotating for Seq2C
"""
bed_file = regions.get_sv_bed(data)
if bed_file:
bed_file = clean_file(bed_file, data, prefix="svregions-")
else:
bed_file = clean_file(dd.get_variant_regions(data), data)
col_num = bt.BedTool(bed_file).field_count()
if col_num < 4:
annotated_file = annotate.add_genes(bed_file, data, max_distance=0)
if annotated_file == bed_file:
raise ValueError("BED file for Seq2C must be annotated with gene names, "
"however the input BED is 3-columns and we have no transcript "
"data to annotate with " + bed_file)
annotated_file = annotate.gene_one_per_line(annotated_file, data)
else:
annotated_file = bed_file
ready_file = "%s-seq2cclean.bed" % (utils.splitext_plus(annotated_file)[0])
if not utils.file_uptodate(ready_file, annotated_file):
bed = bt.BedTool(annotated_file)
if col_num > 4 and col_num != 8:
bed = bed.cut(range(4))
bed = bed.filter(lambda x: x.name not in ["", ".", "-"])
with file_transaction(data, ready_file) as tx_out_file:
bed.saveas(tx_out_file)
logger.debug("Saved Seq2C clean annotated ready input BED into " + ready_file)
return ready_file
def filter_multimappers(align_file, data):
"""
Filtering a BWA alignment file for uniquely mapped reads, from here:
https://bioinformatics.stackexchange.com/questions/508/obtaining-uniquely-mapped-reads-from-bwa-mem-alignment
"""
config = dd.get_config(data)
type_flag = "" if bam.is_bam(align_file) else "S"
base, ext = os.path.splitext(align_file)
out_file = base + ".unique" + ext
bed_file = dd.get_variant_regions(data) or dd.get_sample_callable(data)
bed_cmd = '-L {0}'.format(bed_file) if bed_file else " "
if utils.file_exists(out_file):
return out_file
base_filter = '-F "not unmapped {paired_filter} and not duplicate and [XA] == null and [SA] == null and not supplementary " '
if bam.is_paired(align_file):
paired_filter = "and paired and proper_pair"
else:
paired_filter = ""
filter_string = base_filter.format(paired_filter=paired_filter)
sambamba = config_utils.get_program("sambamba", config)
num_cores = dd.get_num_cores(data)
with file_transaction(out_file) as tx_out_file:
cmd = ('{sambamba} view -h{type_flag} '
'--nthreads {num_cores} '
'-f bam {bed_cmd} '
'{filter_string} '
'{align_file} '
'> {tx_out_file}')
message = "Removing multimapped reads from %s." % align_file
do.run(cmd.format(**locals()), message)
bam.index(out_file, config)
return out_file
def _regions_for_coverage(data, region, ref_file, out_file):
"""Retrieve BED file of regions we need to calculate coverage in.
Checks for variant region specifications that do not overlap contigs
(in which case we do not calculate coverage) and regions smaller than
callable_min_size (in which case we assign everything as callable).
callable_min_size avoids calculations for small chromosomes we won't
split on later, saving computation and disk IO.
"""
variant_regions = bedutils.merge_overlaps(dd.get_variant_regions(data), data)
ready_region = shared.subset_variant_regions(variant_regions, region, out_file)
custom_file = "%s-coverageregions.bed" % utils.splitext_plus(out_file)[0]
region_size = _get_region_size(ref_file, data, region)
if variant_regions is None and region_size is not None and region_size < dd.get_callable_min_size(data):
coverage_str = "CALLABLE" if realign.has_aligned_reads(dd.get_work_bam(data), region) else "NO_COVERAGE"
custom_file = _write_all_chrom_file(coverage_str, custom_file, ref_file, region, data)
return custom_file, False
elif not ready_region:
get_ref_bedtool(ref_file, data["config"]).saveas(custom_file)
return custom_file, True
elif os.path.isfile(ready_region):
return ready_region, True
elif isinstance(ready_region, (list, tuple)):
c, s, e = ready_region
pybedtools.BedTool("%s\t%s\t%s\n" % (c, s, e), from_string=True).saveas(custom_file)
return custom_file, True
else:
custom_file = _write_all_chrom_file("NO_COVERAGE", custom_file, ref_file, region, data)
return custom_file, variant_regions is None
def sample_callable_bed(bam_file, ref_file, data):
"""Retrieve callable regions for a sample subset by defined analysis regions.
"""
from bcbio.heterogeneity import chromhacks
CovInfo = collections.namedtuple("CovInfo", "callable, raw_callable, depth_files")
noalt_calling = "noalt_calling" in dd.get_tools_on(data) or "altcontigs" in dd.get_exclude_regions(data)
def callable_chrom_filter(r):
"""Filter to callable region, potentially limiting by chromosomes.
"""
return r.name == "CALLABLE" and (not noalt_calling or chromhacks.is_nonalt(r.chrom))
out_file = "%s-callable_sample.bed" % os.path.splitext(bam_file)[0]
with shared.bedtools_tmpdir(data):
sv_bed = regions.get_sv_bed(data)
callable_bed, depth_files = coverage.calculate(bam_file, data, sv_bed)
input_regions_bed = dd.get_variant_regions(data)
if not utils.file_uptodate(out_file, callable_bed):
with file_transaction(data, out_file) as tx_out_file:
callable_regions = pybedtools.BedTool(callable_bed)
filter_regions = callable_regions.filter(callable_chrom_filter)
if input_regions_bed:
if not utils.file_uptodate(out_file, input_regions_bed):
input_regions = pybedtools.BedTool(input_regions_bed)
filter_regions.intersect(input_regions, nonamecheck=True).saveas(tx_out_file)
else:
filter_regions.saveas(tx_out_file)
return CovInfo(out_file, callable_bed, depth_files)
def cutoff_w_expression(vcf_file, expression, data, name="+", filterext="",
extra_cmd="", limit_regions="variant_regions"):
"""Perform cutoff-based soft filtering using bcftools expressions like %QUAL < 20 || DP < 4.
"""
base, ext = utils.splitext_plus(vcf_file)
out_file = "{base}-filter{filterext}{ext}".format(**locals())
if not utils.file_exists(out_file):
with file_transaction(data, out_file) as tx_out_file:
if vcfutils.vcf_has_variants(vcf_file):
bcftools = config_utils.get_program("bcftools", data["config"])
bgzip_cmd = "| bgzip -c" if out_file.endswith(".gz") else ""
intervals = ""
if limit_regions == "variant_regions":
variant_regions = dd.get_variant_regions(data)
if variant_regions:
intervals = "-T %s" % vcfutils.bgzip_and_index(variant_regions, data["config"])
cmd = ("{bcftools} filter -O v {intervals} --soft-filter '{name}' "
"-e '{expression}' -m '+' {vcf_file} {extra_cmd} {bgzip_cmd} > {tx_out_file}")
do.run(cmd.format(**locals()),
"Cutoff-based soft filtering %s with %s" % (vcf_file, expression), data)
else:
shutil.copy(vcf_file, out_file)
if out_file.endswith(".vcf.gz"):
out_file = vcfutils.bgzip_and_index(out_file, data["config"])
return out_file
def _add_config_regions(nblock_regions, ref_regions, data):
"""Add additional nblock regions based on configured regions to call.
Identifies user defined regions which we should not be analyzing.
"""
input_regions_bed = dd.get_variant_regions(data)
if input_regions_bed:
input_regions = pybedtools.BedTool(input_regions_bed)
# work around problem with single region not subtracted correctly.
if len(input_regions) == 1:
str_regions = str(input_regions[0]).strip()
input_regions = pybedtools.BedTool("%s\n%s" % (str_regions, str_regions),
from_string=True)
input_nblock = ref_regions.subtract(input_regions, nonamecheck=True)
if input_nblock == ref_regions:
raise ValueError("Input variant_region file (%s) "
"excludes all genomic regions. Do the chromosome names "
"in the BED file match your genome (chr1 vs 1)?" % input_regions_bed)
all_intervals = _combine_regions([input_nblock, nblock_regions], ref_regions)
else:
all_intervals = nblock_regions
if "noalt_calling" in dd.get_tools_on(data) or "altcontigs" in dd.get_exclude_regions(data):
from bcbio.heterogeneity import chromhacks
remove_intervals = ref_regions.filter(lambda r: not chromhacks.is_nonalt(r.chrom))
all_intervals = _combine_regions([all_intervals, remove_intervals], ref_regions)
return all_intervals.merge()
def run_tnscope(align_bams,
items,
ref_file,
assoc_files,
region=None,
out_file=None):
"""Call variants with Sentieon's TNscope somatic caller.
"""
if out_file is None:
out_file = "%s-variants.vcf.gz" % utils.splitext_plus(align_bams[0])[0]
if not utils.file_exists(out_file):
variant_regions = bedutils.merge_overlaps(
dd.get_variant_regions(items[0]), items[0])
interval = _get_interval(variant_regions, region, out_file, items)
with file_transaction(items[0], out_file) as tx_out_file:
paired = vcfutils.get_paired_bams(align_bams, items)
assert paired and paired.normal_bam, "Require normal BAM for Sentieon TNscope"
dbsnp = "--dbsnp %s" % (
assoc_files.get("dbsnp")) if "dbsnp" in assoc_files else ""
license = license_export(items[0])
cores = dd.get_num_cores(items[0])
cmd = (
"{license}sentieon driver -t {cores} -r {ref_file} "
"-i {paired.tumor_bam} -i {paired.normal_bam} {interval} "
"--algo TNscope "
"--tumor_sample {paired.tumor_name} --normal_sample {paired.normal_name} "
"{dbsnp} {tx_out_file}")
do.run(cmd.format(**locals()), "Sentieon TNscope")
return out_file
def _regions_for_coverage(data, region, ref_file, out_file):
"""Retrieve BED file of regions we need to calculate coverage in.
"""
variant_regions = bedutils.merge_overlaps(dd.get_variant_regions(data),
data)
ready_region = shared.subset_variant_regions(variant_regions, region,
out_file)
custom_file = "%s-coverageregions.bed" % utils.splitext_plus(out_file)[0]
if not ready_region:
get_ref_bedtool(ref_file, data["config"]).saveas(custom_file)
return custom_file, True
elif os.path.isfile(ready_region):
return ready_region, True
elif isinstance(ready_region, (list, tuple)):
c, s, e = ready_region
pybedtools.BedTool("%s\t%s\t%s\n" % (c, s, e),
from_string=True).saveas(custom_file)
return custom_file, True
else:
with file_transaction(data, custom_file) as tx_out_file:
with open(tx_out_file, "w") as out_handle:
for feat in get_ref_bedtool(ref_file, data["config"], region):
out_handle.write(
"%s\t%s\t%s\t%s\n" %
(feat.chrom, feat.start, feat.end, "NO_COVERAGE"))
return custom_file, variant_regions is None
def run_tnhaplotyper(align_bams, items, ref_file, assoc_files,
region=None, out_file=None):
"""Call variants with Sentieon's TNhaplotyper (MuTect2 like).
"""
if out_file is None:
out_file = "%s-variants.vcf.gz" % utils.splitext_plus(align_bams[0])[0]
if not utils.file_exists(out_file):
variant_regions = bedutils.merge_overlaps(dd.get_variant_regions(items[0]), items[0])
interval = _get_interval(variant_regions, region, out_file, items)
with file_transaction(items[0], out_file) as tx_out_file:
paired = vcfutils.get_paired_bams(align_bams, items)
assert paired.normal_bam, "Require normal BAM for Sentieon TNhaplotyper"
dbsnp = "--dbsnp %s" % (assoc_files.get("dbsnp")) if "dbsnp" in assoc_files else ""
cosmic = "--cosmic %s" % (assoc_files.get("cosmic")) if "cosmic" in assoc_files else ""
license = license_export(items[0])
tx_orig_file = "%s-orig%s" % utils.splitext_plus(tx_out_file)
cores = dd.get_num_cores(items[0])
cmd = ("{license}sentieon driver -t {cores} -r {ref_file} "
"-i {paired.tumor_bam} -i {paired.normal_bam} {interval} "
"--algo TNhaplotyper "
"--tumor_sample {paired.tumor_name} --normal_sample {paired.normal_name} "
"{dbsnp} {cosmic} {tx_orig_file}")
do.run(cmd.format(**locals()), "Sentieon TNhaplotyper")
cmd = ("gunzip -c {tx_orig_file} | "
"sed 's/ID=ECNT,Number=1,Type=Integer/ID=ECNT,Number=1,Type=String/' | "
"sed 's/ID=HCNT,Number=1,Type=Integer/ID=HCNT,Number=1,Type=String/' | "
"sed 's/ID=NLOD,Number=1,Type=Float/ID=NLOD,Number=1,Type=String/' | "
"sed 's/ID=TLOD,Number=1,Type=Float/ID=TLOD,Number=1,Type=String/' | "
"sed 's/ID=PON,Number=1,Type=Integer/ID=PON,Number=1,Type=String/' | "
"bgzip -c > {tx_out_file}")
do.run(cmd.format(**locals()), "Sentieon TNhaplotyper: make headers GATK compatible")
vcfutils.bgzip_and_index(tx_out_file, items[0]["config"])
return out_file
def umi_consensus(data):
"""Convert UMI grouped reads into fastq pair for re-alignment.
"""
align_bam = dd.get_work_bam(data)
umi_method, umi_tag = _check_umi_type(align_bam)
f1_out = "%s-cumi-1.fq.gz" % utils.splitext_plus(align_bam)[0]
f2_out = "%s-cumi-2.fq.gz" % utils.splitext_plus(align_bam)[0]
avg_coverage = coverage.get_average_coverage("rawumi",
dd.get_variant_regions(data),
data)
if not utils.file_uptodate(f1_out, align_bam):
with file_transaction(data, f1_out, f2_out) as (tx_f1_out, tx_f2_out):
jvm_opts = _get_fgbio_jvm_opts(data, os.path.dirname(tx_f1_out), 2)
# Improve speeds by avoiding compression read/write bottlenecks
io_opts = "--async-io=true --compression=0"
est_options = _estimate_fgbio_defaults(avg_coverage)
group_opts, cons_opts, filter_opts = _get_fgbio_options(
data, est_options, umi_method)
cons_method = "CallDuplexConsensusReads" if umi_method == "paired" else "CallMolecularConsensusReads"
tempfile = "%s-bamtofastq-tmp" % utils.splitext_plus(f1_out)[0]
ref_file = dd.get_ref_file(data)
cmd = (
"unset JAVA_HOME && "
"fgbio {jvm_opts} {io_opts} GroupReadsByUmi {group_opts} -t {umi_tag} -s {umi_method} "
"-i {align_bam} | "
"fgbio {jvm_opts} {io_opts} {cons_method} {cons_opts} --sort-order=:none: "
"-i /dev/stdin -o /dev/stdout | "
"fgbio {jvm_opts} {io_opts} FilterConsensusReads {filter_opts} -r {ref_file} "
"-i /dev/stdin -o /dev/stdout | "
"bamtofastq collate=1 T={tempfile} F={tx_f1_out} F2={tx_f2_out} tags=cD,cM,cE gz=1"
)
do.run(cmd.format(**locals()), "UMI consensus fastq generation")
return f1_out, f2_out, avg_coverage
def run(bam_file, data, out_dir):
"""Run qualimap to assess alignment quality metrics.
"""
resources = config_utils.get_resources("qualimap", data["config"])
options = " ".join(resources.get("options", ""))
report_file = os.path.join(out_dir, "qualimapReport.html")
pdf_file = "qualimapReport.pdf"
if not utils.file_exists(report_file) and not utils.file_exists(os.path.join(out_dir, pdf_file)):
if "qualimap_full" in tz.get_in(("config", "algorithm", "tools_on"), data, []):
logger.info("Full qualimap analysis for %s may be slow." % bam_file)
ds_bam = bam_file
else:
ds_bam = bam.downsample(bam_file, data, 1e7, work_dir=out_dir)
bam_file = ds_bam if ds_bam else bam_file
if options.find("PDF") > -1:
options = "%s -outfile %s" % (options, pdf_file)
utils.safe_makedir(out_dir)
num_cores = data["config"]["algorithm"].get("num_cores", 1)
qualimap = config_utils.get_program("qualimap", data["config"])
max_mem = config_utils.adjust_memory(resources.get("memory", "1G"),
num_cores)
export = utils.local_path_export()
cmd = ("unset DISPLAY && {export} {qualimap} bamqc -bam {bam_file} -outdir {out_dir} "
"-nt {num_cores} --java-mem-size={max_mem} {options}")
species = tz.get_in(("genome_resources", "aliases", "ensembl"), data, "")
if species in ["HUMAN", "MOUSE"]:
cmd += " -gd {species}"
regions = bedutils.merge_overlaps(dd.get_variant_regions(data), data)
if regions:
bed6_regions = _bed_to_bed6(regions, out_dir)
cmd += " -gff {bed6_regions}"
do.run(cmd.format(**locals()), "Qualimap: %s" % dd.get_sample_name(data))
return _parse_qualimap_metrics(report_file)
def _get_target_access_files(cov_interval, data, work_dir):
"""Retrieve target and access files based on the type of data to process.
pick targets, anti-targets and access files based on analysis type
http://cnvkit.readthedocs.org/en/latest/nonhybrid.html
"""
base_regions = regions.get_sv_bed(data)
# if we don't have a configured BED or regions to use for SV caling
if not base_regions:
# For genome calls, subset to regions within 10kb of genes
if cov_interval == "genome":
base_regions = regions.get_sv_bed(data, "transcripts1e4", work_dir)
if base_regions:
base_regions = shared.remove_exclude_regions(base_regions, base_regions, [data])
# Finally, default to the defined variant regions
if not base_regions:
base_regions = dd.get_variant_regions(data)
target_bed = bedutils.merge_overlaps(base_regions, data, out_dir=work_dir)
if cov_interval == "amplicon":
return target_bed, target_bed
elif cov_interval == "genome":
return target_bed, target_bed
else:
access_file = _create_access_file(dd.get_ref_file(data), _sv_workdir(data), data)
return target_bed, access_file
def _run_qualimap(bam_file, data, out_dir):
"""Run qualimap to assess alignment quality metrics.
"""
report_file = os.path.join(out_dir, "qualimapReport.html")
if not os.path.exists(report_file):
ds_bam = bam.downsample(bam_file, data, 1e7)
bam_file = ds_bam if ds_bam else bam_file
utils.safe_makedir(out_dir)
num_cores = data["config"]["algorithm"].get("num_cores", 1)
qualimap = config_utils.get_program("qualimap", data["config"])
resources = config_utils.get_resources("qualimap", data["config"])
max_mem = config_utils.adjust_memory(resources.get("memory", "1G"),
num_cores)
cmd = (
"unset DISPLAY && {qualimap} bamqc -bam {bam_file} -outdir {out_dir} "
"-nt {num_cores} --java-mem-size={max_mem}")
species = data["genome_resources"]["aliases"].get("ensembl",
"").upper()
if species in ["HUMAN", "MOUSE"]:
cmd += " -gd {species}"
regions = bedutils.merge_overlaps(dd.get_variant_regions(data), data)
if regions:
bed6_regions = _bed_to_bed6(regions, out_dir)
cmd += " -gff {bed6_regions}"
do.run(cmd.format(**locals()), "Qualimap: %s" % data["name"][-1])
return _parse_qualimap_metrics(report_file)
def filter_multimappers(align_file, data):
"""
It does not seem like bowtie2 has a corollary to the -m 1 flag in bowtie,
there are some options that are close but don't do the same thing. Bowtie2
sets the XS flag for reads mapping in more than one place, so we can just
filter on that. This will not work for other aligners.
"""
config = dd.get_config(data)
type_flag = "" if bam.is_bam(align_file) else "S"
base, ext = os.path.splitext(align_file)
out_file = base + ".unique" + ext
bed_file = dd.get_variant_regions(data) or dd.get_sample_callable(data)
bed_cmd = '-L {0}'.format(bed_file) if bed_file else " "
if utils.file_exists(out_file):
return out_file
base_filter = '-F "[XS] == null and not unmapped {paired_filter} and not duplicate" '
if bam.is_paired(align_file):
paired_filter = "and paired and proper_pair"
else:
paired_filter = ""
filter_string = base_filter.format(paired_filter=paired_filter)
sambamba = config_utils.get_program("sambamba", config)
num_cores = dd.get_num_cores(data)
with file_transaction(out_file) as tx_out_file:
cmd = ('{sambamba} view -h{type_flag} '
'--nthreads {num_cores} '
'-f bam {bed_cmd} '
'{filter_string} '
'{align_file} '
'> {tx_out_file}')
message = "Removing multimapped reads from %s." % align_file
do.run(cmd.format(**locals()), message)
bam.index(out_file, config)
return out_file
def run(bam_file, data, out_dir):
if "picard" not in dd.get_tools_on(data):
return {}
ref_file = dd.get_ref_file(data)
sample = dd.get_sample_name(data)
target_file = dd.get_variant_regions(data)
broad_runner = broad.PicardCmdRunner("picard", data["config"])
bam_fname = os.path.abspath(bam_file)
path = os.path.dirname(bam_fname)
utils.safe_makedir(out_dir)
out_base = utils.splitext_plus(os.path.basename(bam_fname))[0]
hsmetric_file = os.path.join(out_dir, "%s.hs_metrics" % out_base)
hsinsert_file = os.path.join(out_dir, "%s.insert_metrics" % out_base)
if not utils.file_exists(hsmetric_file) and not utils.file_exists(hsinsert_file):
with utils.chdir(out_dir):
with tx_tmpdir() as tmp_dir:
cur_bam = os.path.basename(bam_fname)
if not os.path.exists(cur_bam):
os.symlink(bam_fname, cur_bam)
gen_metrics = PicardMetrics(broad_runner, tmp_dir)
gen_metrics.report(cur_bam, ref_file,
bam.is_paired(bam_fname),
target_file, target_file, None, data["config"])
if utils.file_exists(hsmetric_file):
do.run("sed -i 's/%s.bam//g' %s" % (out_base.replace(sample, ""), hsmetric_file), "")
if utils.file_exists(hsinsert_file):
do.run("sed -i 's/%s.bam//g' %s" % (out_base.replace(sample, ""), hsinsert_file), "")
return hsmetric_file
def cutoff_w_expression(vcf_file, expression, data, name="+", filterext="",
extra_cmd="", limit_regions="variant_regions"):
"""Perform cutoff-based soft filtering using bcftools expressions like %QUAL < 20 || DP < 4.
"""
base, ext = utils.splitext_plus(vcf_file)
out_file = "{base}-filter{filterext}{ext}".format(**locals())
if not utils.file_exists(out_file):
with file_transaction(data, out_file) as tx_out_file:
if vcfutils.vcf_has_variants(vcf_file):
bcftools = config_utils.get_program("bcftools", data["config"])
bgzip_cmd = "| bgzip -c" if out_file.endswith(".gz") else ""
intervals = ""
if limit_regions == "variant_regions":
variant_regions = dd.get_variant_regions(data)
if variant_regions:
intervals = "-T %s" % vcfutils.bgzip_and_index(variant_regions, data["config"])
cmd = ("{bcftools} filter -O v {intervals} --soft-filter '{name}' "
"-e '{expression}' -m '+' {vcf_file} {extra_cmd} {bgzip_cmd} > {tx_out_file}")
do.run(cmd.format(**locals()),
"Cutoff-based soft filtering %s with %s" % (vcf_file, expression), data)
else:
shutil.copy(vcf_file, out_file)
if out_file.endswith(".vcf.gz"):
out_file = vcfutils.bgzip_and_index(out_file, data["config"])
return out_file
def _get_target_access_files(cov_interval, data, work_dir):
"""Retrieve target and access files based on the type of data to process.
pick targets, anti-targets and access files based on analysis type
http://cnvkit.readthedocs.org/en/latest/nonhybrid.html
"""
base_regions = regions.get_sv_bed(data)
# if we don't have a configured BED or regions to use for SV caling
if not base_regions:
# For genome calls, subset to regions within 10kb of genes
if cov_interval == "genome":
base_regions = regions.get_sv_bed(data, "transcripts1e4", work_dir)
base_regions = shared.remove_exclude_regions(
base_regions, base_regions, [data])
# Finally, default to the defined variant regions
if not base_regions:
base_regions = dd.get_variant_regions(data)
target_bed = bedutils.merge_overlaps(base_regions, data, out_dir=work_dir)
if cov_interval == "amplicon":
return target_bed, target_bed
elif cov_interval == "genome":
return target_bed, target_bed
else:
access_file = _create_access_file(dd.get_ref_file(data),
_sv_workdir(data), data)
return target_bed, access_file
def run(bam_file, data, out_dir):
if "picard" not in dd.get_tools_on(data):
return {}
ref_file = dd.get_ref_file(data)
sample = dd.get_sample_name(data)
target_file = dd.get_variant_regions(data) or dd.get_sample_callable(data)
broad_runner = broad.PicardCmdRunner("picard", data["config"])
bam_fname = os.path.abspath(bam_file)
path = os.path.dirname(bam_fname)
utils.safe_makedir(out_dir)
out_base = utils.splitext_plus(os.path.basename(bam_fname))[0]
hsmetric_file = os.path.join(out_dir, "%s.hs_metrics" % out_base)
hsinsert_file = os.path.join(out_dir, "%s.insert_metrics" % out_base)
if not utils.file_exists(hsmetric_file) and not utils.file_exists(hsinsert_file):
with utils.chdir(out_dir):
with tx_tmpdir() as tmp_dir:
cur_bam = os.path.basename(bam_fname)
if not os.path.exists(cur_bam):
os.symlink(bam_fname, cur_bam)
gen_metrics = PicardMetrics(broad_runner, tmp_dir)
gen_metrics.report(cur_bam, ref_file,
bam.is_paired(bam_fname),
target_file, target_file, None, data["config"])
if utils.file_exists(hsmetric_file):
do.run("sed -i 's/%s.bam//g' %s" % (out_base.replace(sample, ""), hsmetric_file), "")
if utils.file_exists(hsinsert_file):
do.run("sed -i 's/%s.bam//g' %s" % (out_base.replace(sample, ""), hsinsert_file), "")
return hsmetric_file
def variants(data):
if not "vrn_file" in data:
return data
in_vcf = data['vrn_file']
work_dir = os.path.join(dd.get_work_dir(data), "report", "variants")
with chdir(work_dir):
in_bam = data['work_bam']
ref_file = dd.get_ref_file(data)
assert ref_file, "Need the reference genome fasta file."
jvm_opts = broad.get_gatk_framework_opts(data['config'])
gatk_jar = config_utils.get_program("gatk", data['config'], "dir")
bed_file = dd.get_variant_regions(data)
sample = splitext_plus(os.path.basename(in_vcf))[0]
in_bam = data["work_bam"]
cg_file = os.path.join(sample + "_with-gc.vcf.gz")
parse_file = os.path.join(sample + "_cg-depth-parse.tsv")
if not file_exists(cg_file):
with file_transaction(cg_file) as tx_out:
cmd = ("java -jar {gatk_jar}/GenomeAnalysisTK.jar -T VariantAnnotator -R {ref_file} "
"-L {bed_file} -I {in_bam} "
"-A GCContent --variant {in_vcf} --out {tx_out}")
do.run(cmd.format(**locals()), " GC bias for %s" % in_vcf)
if not file_exists(parse_file):
with file_transaction(parse_file) as out_tx:
with open(out_tx, 'w') as out_handle:
print >>out_handle, "CG\tdepth\tsample"
cmd = ("bcftools query -f '[%GC][\\t%DP][\\t%SAMPLE]\\n' -R {bed_file} {cg_file} >> {out_tx}")
do.run(cmd.format(**locals()), " query for %s" % in_vcf)
logger.debug('parsing coverage: %s' % sample)
# return df
return data
def run_haplotyper(align_bams,
items,
ref_file,
assoc_files,
region=None,
out_file=None):
"""Call variants with Sentieon's haplotyper (GATK HaplotypeCaller like).
"""
if out_file is None:
out_file = "%s-variants.vcf.gz" % utils.splitext_plus(align_bams[0])[0]
if not utils.file_exists(out_file):
variant_regions = bedutils.merge_overlaps(
dd.get_variant_regions(items[0]), items[0])
interval = _get_interval(variant_regions, region, out_file, items)
with file_transaction(items[0], out_file) as tx_out_file:
dbsnp = "--dbsnp %s" % (
assoc_files.get("dbsnp")) if "dbsnp" in assoc_files else ""
bams = " ".join(["-i %s" % x for x in align_bams])
license = license_export(items[0])
cores = dd.get_num_cores(items[0])
out_mode = "--emit_mode gvcf" if joint.want_gvcf(items) else ""
cmd = (
"{license}sentieon driver -t {cores} -r {ref_file} "
"{bams} {interval} --algo Haplotyper {out_mode} {dbsnp} {tx_out_file}"
)
do.run(cmd.format(**locals()), "Sentieon Haplotyper")
return out_file
def calculate_offtarget(bam_file, ref_file, data):
"""Generate file of offtarget read counts for inputs with variant regions.
"""
vrs_file = dd.get_variant_regions(data)
if vrs_file:
out_file = "%s-offtarget-stats.yaml" % os.path.splitext(bam_file)[0]
if not utils.file_exists(out_file):
with file_transaction(data, out_file) as tx_out_file:
offtarget_regions = "%s-regions.bed" % utils.splitext_plus(out_file)[0]
ref_bed = get_ref_bedtool(ref_file, data["config"])
ref_bed.subtract(pybedtools.BedTool(vrs_file), nonamecheck=True).saveas(offtarget_regions)
cmd = (
"samtools view -u {bam_file} -L {offtarget_regions} | "
"bedtools intersect -abam - -b {offtarget_regions} -f 1.0 -bed | wc -l"
)
offtarget_count = int(subprocess.check_output(cmd.format(**locals()), shell=True))
cmd = "samtools idxstats {bam_file} | awk '{{s+=$3}} END {{print s}}'"
mapped_count = int(subprocess.check_output(cmd.format(**locals()), shell=True))
with open(tx_out_file, "w") as out_handle:
yaml.safe_dump(
{"mapped": mapped_count, "offtarget": offtarget_count},
out_handle,
allow_unicode=False,
default_flow_style=False,
)
return out_file
def run(bam_file, data, out_dir):
config = data["config"]
if "picard" not in dd.get_tools_on(data):
return {}
ref_file = dd.get_ref_file(data)
sample = dd.get_sample_name(data)
target_file = dd.get_variant_regions(data)
broad_runner = broad.PicardCmdRunner("picard", config)
bam_fname = os.path.abspath(bam_file)
path = os.path.dirname(bam_fname)
utils.safe_makedir(out_dir)
hsmetric_file = os.path.join(out_dir, "%s-sort.hs_metrics" % sample)
if utils.file_exists(hsmetric_file):
return hsmetric_file
with utils.chdir(out_dir):
with tx_tmpdir() as tmp_dir:
cur_bam = os.path.basename(bam_fname)
if not os.path.exists(cur_bam):
os.symlink(bam_fname, cur_bam)
gen_metrics = PicardMetrics(broad_runner, tmp_dir)
gen_metrics.report(cur_bam, ref_file,
bam.is_paired(bam_fname),
target_file, target_file, None, config)
do.run("sed -i 's/-sort.bam//g' %s" % hsmetric_file, "")
return hsmetric_file
def _add_config_regions(nblock_regions, ref_regions, data):
"""Add additional nblock regions based on configured regions to call.
Identifies user defined regions which we should not be analyzing.
"""
input_regions_bed = dd.get_variant_regions(data)
if input_regions_bed:
input_regions = pybedtools.BedTool(input_regions_bed)
# work around problem with single region not subtracted correctly.
if len(input_regions) == 1:
str_regions = str(input_regions[0]).strip()
input_regions = pybedtools.BedTool("%s\n%s" %
(str_regions, str_regions),
from_string=True)
input_nblock = ref_regions.subtract(input_regions, nonamecheck=True)
if input_nblock == ref_regions:
raise ValueError(
"Input variant_region file (%s) "
"excludes all genomic regions. Do the chromosome names "
"in the BED file match your genome (chr1 vs 1)?" %
input_regions_bed)
all_intervals = _combine_regions([input_nblock, nblock_regions],
ref_regions)
else:
all_intervals = nblock_regions
if "noalt_calling" in dd.get_tools_on(
data) or "altcontigs" in dd.get_exclude_regions(data):
from bcbio.heterogeneity import chromhacks
remove_intervals = ref_regions.filter(
lambda r: not chromhacks.is_nonalt(r.chrom))
all_intervals = _combine_regions([all_intervals, remove_intervals],
ref_regions)
return all_intervals.merge()
def run(bam_file, data, out_dir):
"""Run qualimap to assess alignment quality metrics.
"""
resources = config_utils.get_resources("qualimap", data["config"])
options = " ".join(resources.get("options", ""))
report_file = os.path.join(out_dir, "qualimapReport.html")
pdf_file = "qualimapReport.pdf"
if not utils.file_exists(report_file) and not utils.file_exists(os.path.join(out_dir, pdf_file)):
if "qualimap_full" in tz.get_in(("config", "algorithm", "tools_on"), data, []):
logger.info("Full qualimap analysis for %s may be slow." % bam_file)
ds_bam = bam_file
else:
ds_bam = bam.downsample(bam_file, data, 1e7, work_dir=out_dir)
bam_file = ds_bam if ds_bam else bam_file
if options.find("PDF") > -1:
options = "%s -outfile %s" % (options, pdf_file)
utils.safe_makedir(out_dir)
num_cores = data["config"]["algorithm"].get("num_cores", 1)
qualimap = config_utils.get_program("qualimap", data["config"])
max_mem = config_utils.adjust_memory(resources.get("memory", "1G"),
num_cores)
cmd = ("unset DISPLAY && {qualimap} bamqc -bam {bam_file} -outdir {out_dir} "
"-nt {num_cores} --java-mem-size={max_mem} {options}")
species = tz.get_in(("genome_resources", "aliases", "ensembl"), data, "")
if species in ["HUMAN", "MOUSE"]:
cmd += " -gd {species}"
regions = bedutils.merge_overlaps(dd.get_variant_regions(data), data)
if regions:
bed6_regions = _bed_to_bed6(regions, out_dir)
cmd += " -gff {bed6_regions}"
do.run(cmd.format(**locals()), "Qualimap: %s" % dd.get_sample_name(data))
return _parse_qualimap_metrics(report_file)
def filter_multimappers(align_file, data):
"""
It does not seem like bowtie2 has a corollary to the -m 1 flag in bowtie,
there are some options that are close but don't do the same thing. Bowtie2
sets the XS flag for reads mapping in more than one place, so we can just
filter on that. This will not work for other aligners.
"""
config = dd.get_config(data)
type_flag = "" if bam.is_bam(align_file) else "S"
base, ext = os.path.splitext(align_file)
out_file = base + ".unique" + ext
bed_file = dd.get_variant_regions(data)
bed_cmd = '-L {0}'.format(bed_file) if bed_file else " "
if utils.file_exists(out_file):
return out_file
base_filter = '-F "[XS] == null and not unmapped {paired_filter} and not duplicate" '
if bam.is_paired(align_file):
paired_filter = "and paired and proper_pair"
else:
paired_filter = ""
filter_string = base_filter.format(paired_filter=paired_filter)
sambamba = config_utils.get_program("sambamba", config)
num_cores = dd.get_num_cores(data)
with file_transaction(out_file) as tx_out_file:
cmd = ('{sambamba} view -h{type_flag} '
'--nthreads {num_cores} '
'-f bam {bed_cmd} '
'{filter_string} '
'{align_file} '
'> {tx_out_file}')
message = "Removing multimapped reads from %s." % align_file
do.run(cmd.format(**locals()), message)
bam.index(out_file, config)
return out_file
def gatk_rnaseq_calling(data):
"""Use GATK to perform gVCF variant calling on RNA-seq data
"""
from bcbio.bam import callable
data = utils.deepish_copy(data)
tools_on = dd.get_tools_on(data)
if not tools_on:
tools_on = []
tools_on.append("gvcf")
data = dd.set_tools_on(data, tools_on)
data = dd.set_jointcaller(data, ["%s-joint" % v for v in dd.get_variantcaller(data)])
out_dir = utils.safe_makedir(os.path.join(dd.get_work_dir(data),
"variation", "rnaseq", "gatk-haplotype"))
data = _setup_variant_regions(data, out_dir)
out_file = os.path.join(out_dir, "%s-gatk-haplotype.vcf.gz" % dd.get_sample_name(data))
if not utils.file_exists(out_file):
region_files = []
regions = []
for cur_region in callable.get_split_regions(dd.get_variant_regions(data), data):
str_region = "_".join([str(x) for x in cur_region])
region_file = os.path.join(utils.safe_makedir(os.path.join(dd.get_work_dir(data),
"variation", "rnaseq", "gatk-haplotype",
"regions")),
"%s-%s-gatk-haplotype.vcf.gz" % (dd.get_sample_name(data), str_region))
region_file = gatk.haplotype_caller([dd.get_split_bam(data)], [data], dd.get_ref_file(data), {},
region=cur_region, out_file=region_file)
region_files.append(region_file)
regions.append(cur_region)
out_file = vcfutils.concat_variant_files(region_files, out_file, regions,
dd.get_ref_file(data), data["config"])
return dd.set_vrn_file(data, out_file)
def get_sv_bed(data, method=None, out_dir=None, include_gene_names=True):
"""Retrieve a BED file of regions for SV and heterogeneity calling using the provided method.
method choices:
- exons: Raw BED file of exon regions
- transcripts: Full collapsed regions with the min and max of each transcript.
- transcriptsXXXX: Collapsed regions around transcripts with a window size of
XXXX.
- A custom BED file of regions
"""
if method is None:
method = (tz.get_in(["config", "algorithm", "sv_regions"], data) or dd.get_variant_regions(data)
or dd.get_sample_callable(data))
gene_file = dd.get_gene_bed(data)
if method and os.path.isfile(method):
return method
elif not gene_file or not method:
return None
elif method == "exons":
return gene_file
elif method.startswith("transcripts"):
window = method.split("transcripts")[-1]
window = int(float(window)) if window else 0
return _collapse_transcripts(gene_file, window, data, out_dir, include_gene_names=include_gene_names)
else:
raise ValueError("Unexpected transcript retrieval method: %s" % method)
def umi_consensus(data):
"""Convert UMI grouped reads into fastq pair for re-alignment.
"""
align_bam = dd.get_work_bam(data)
umi_method, umi_tag = _check_umi_type(align_bam)
f1_out = "%s-cumi-1.fq.gz" % utils.splitext_plus(align_bam)[0]
f2_out = "%s-cumi-2.fq.gz" % utils.splitext_plus(align_bam)[0]
avg_coverage = coverage.get_average_coverage("rawumi", dd.get_variant_regions(data), data)
if not utils.file_uptodate(f1_out, align_bam):
with file_transaction(data, f1_out, f2_out) as (tx_f1_out, tx_f2_out):
jvm_opts = _get_fgbio_jvm_opts(data, os.path.dirname(tx_f1_out), 2)
# Improve speeds by avoiding compression read/write bottlenecks
io_opts = "--async-io=true --compression=0"
est_options = _estimate_fgbio_defaults(avg_coverage)
group_opts, cons_opts, filter_opts = _get_fgbio_options(data, est_options, umi_method)
cons_method = "CallDuplexConsensusReads" if umi_method == "paired" else "CallMolecularConsensusReads"
tempfile = "%s-bamtofastq-tmp" % utils.splitext_plus(f1_out)[0]
ref_file = dd.get_ref_file(data)
cmd = ("unset JAVA_HOME && "
"fgbio {jvm_opts} {io_opts} GroupReadsByUmi {group_opts} -t {umi_tag} -s {umi_method} "
"-i {align_bam} | "
"fgbio {jvm_opts} {io_opts} {cons_method} {cons_opts} --sort-order=:none: "
"-i /dev/stdin -o /dev/stdout | "
"fgbio {jvm_opts} {io_opts} FilterConsensusReads {filter_opts} -r {ref_file} "
"-i /dev/stdin -o /dev/stdout | "
"bamtofastq collate=1 T={tempfile} F={tx_f1_out} F2={tx_f2_out} tags=cD,cM,cE gz=1")
do.run(cmd.format(**locals()), "UMI consensus fastq generation")
return f1_out, f2_out, avg_coverage
def prep_recal(data):
"""Do pre-BQSR recalibration, calculation of recalibration tables.
"""
if dd.get_recalibrate(data) in [True, "gatk"]:
logger.info("Prepare BQSR tables with GATK: %s " %
str(dd.get_sample_name(data)))
dbsnp_file = tz.get_in(("genome_resources", "variation", "dbsnp"),
data)
if not dbsnp_file:
logger.info(
"Skipping GATK BaseRecalibrator because no VCF file of known variants was found."
)
return data
broad_runner = broad.runner_from_config(data["config"])
data["prep_recal"] = _gatk_base_recalibrator(
broad_runner, dd.get_align_bam(data), dd.get_ref_file(data),
dd.get_platform(data), dbsnp_file, dd.get_variant_regions(data),
data)
elif dd.get_recalibrate(data) == "sentieon":
logger.info("Prepare BQSR tables with sentieon: %s " %
str(dd.get_sample_name(data)))
data["prep_recal"] = sentieon.bqsr_table(data)
elif dd.get_recalibrate(data):
raise NotImplementedError("Unsupported recalibration type: %s" %
(dd.get_recalibrate(data)))
return data
def get_sv_bed(data, method=None, out_dir=None, include_gene_names=True):
"""Retrieve a BED file of regions for SV and heterogeneity calling using the provided method.
method choices:
- exons: Raw BED file of exon regions
- transcripts: Full collapsed regions with the min and max of each transcript.
- transcriptsXXXX: Collapsed regions around transcripts with a window size of
XXXX.
- A custom BED file of regions
"""
if method is None:
method = (tz.get_in(["config", "algorithm", "sv_regions"], data) or dd.get_variant_regions(data)
or dd.get_sample_callable(data))
gene_file = dd.get_gene_bed(data)
if method and os.path.isfile(method):
return method
elif not gene_file or not method:
return None
elif method == "exons":
return gene_file
elif method.startswith("transcripts"):
window = method.split("transcripts")[-1]
window = int(float(window)) if window else 0
return _collapse_transcripts(gene_file, window, data, out_dir, include_gene_names=include_gene_names)
else:
raise ValueError("Unexpected transcript retrieval method: %s" % method)
def variants(data, out_dir):
"""Variants QC metrics"""
if not "variants" in data:
return None
work_dir = safe_makedir(out_dir)
sample = dd.get_sample_name(data)
bcfstats = _run_bcftools(data, work_dir)
bed_file = dd.get_coverage(data)
bcf_out = os.path.join(sample + "_bcbio_variants_stats.txt")
cg_file = os.path.join(sample + "_with-gc.vcf.gz")
parse_file = os.path.join(sample + "_gc-depth-parse.tsv")
qc_file = os.path.join(sample + "_bcbio_variants.txt")
with chdir(work_dir):
if not file_exists(bcf_out):
with open(bcf_out, "w") as out_handle:
yaml.safe_dump(bcfstats,
out_handle,
default_flow_style=False,
allow_unicode=False)
if "vrn_file" not in data or not bed_file:
return None
in_vcf = data['vrn_file']
cleaned_bed = clean_file(bed_file, data)
if file_exists(qc_file):
return qc_file
in_bam = dd.get_align_bam(data) or dd.get_work_bam(data)
ref_file = dd.get_ref_file(data)
assert ref_file, "Need the reference genome fasta file."
bed_file = dd.get_variant_regions(data)
in_bam = dd.get_align_bam(data) or dd.get_work_bam(data)
num_cores = dd.get_num_cores(data)
broad_runner = broad.runner_from_config_safe(data["config"])
if in_bam and broad_runner and broad_runner.has_gatk():
if not file_exists(parse_file):
with file_transaction(cg_file) as tx_out:
params = [
"-T", "VariantAnnotator", "-R", ref_file, "-L",
cleaned_bed, "-I", in_bam, "-A", "GCContent", "-A",
"Coverage", "--variant", in_vcf, "--out", tx_out
]
broad_runner.run_gatk(params)
cg_file = vcfutils.bgzip_and_index(cg_file, data["config"])
if not file_exists(parse_file):
with file_transaction(parse_file) as out_tx:
with open(out_tx, 'w') as out_handle:
print >> out_handle, "CG\tdepth\tsample"
cmd = (
"bcftools query -s {sample} -f '[%GC][\\t%DP][\\t%SAMPLE]\\n' -R "
"{bed_file} {cg_file} >> {out_tx}")
do.run(cmd.format(**locals()),
"Calculating GC content and depth for %s" % in_vcf)
logger.debug('parsing coverage: %s' % sample)
if not file_exists(qc_file):
# This files will be copied to final
_summary_variants(parse_file, qc_file)
if file_exists(qc_file) and file_exists(parse_file):
remove_plus(cg_file)
def combine_sample_regions(*samples):
"""Create batch-level sets of callable regions for multi-sample calling.
Intersects all non-callable (nblock) regions from all samples in a batch,
producing a global set of callable regions.
"""
samples = utils.unpack_worlds(samples)
# back compatibility -- global file for entire sample set
global_analysis_file = os.path.join(samples[0]["dirs"]["work"],
"analysis_blocks.bed")
if utils.file_exists(global_analysis_file) and not _needs_region_update(
global_analysis_file, samples):
global_no_analysis_file = os.path.join(
os.path.dirname(global_analysis_file), "noanalysis_blocks.bed")
else:
global_analysis_file = None
out = []
analysis_files = []
batches = []
with shared.bedtools_tmpdir(samples[0]):
for batch, items in vmulti.group_by_batch(samples,
require_bam=False).items():
batches.append(items)
if global_analysis_file:
analysis_file, no_analysis_file = global_analysis_file, global_no_analysis_file
else:
analysis_file, no_analysis_file = _combine_sample_regions_batch(
batch, items)
for data in items:
vr_file = dd.get_variant_regions(data)
if analysis_file:
analysis_files.append(analysis_file)
data["config"]["algorithm"][
"callable_regions"] = analysis_file
data["config"]["algorithm"][
"non_callable_regions"] = no_analysis_file
data["config"]["algorithm"][
"callable_count"] = pybedtools.BedTool(
analysis_file).count()
elif vr_file:
data["config"]["algorithm"][
"callable_count"] = pybedtools.BedTool(
vr_file).count()
highdepth_bed = tz.get_in(["regions", "highdepth"], data)
if highdepth_bed:
data["config"]["algorithm"][
"highdepth_regions"] = highdepth_bed
# attach a representative sample for calculating callable region
if not data.get("work_bam"):
for x in items:
if x.get("work_bam"):
data["work_bam_callable"] = x["work_bam"]
out.append([data])
assert len(out) == len(samples)
if len(analysis_files) > 0:
final_regions = pybedtools.BedTool(analysis_files[0])
_analysis_block_stats(final_regions, batches[0])
return out
def variants(data, out_dir):
"""Variants QC metrics"""
if not "variants" in data:
return None
work_dir = safe_makedir(out_dir)
sample = dd.get_sample_name(data)
bcfstats = _run_bcftools(data, work_dir)
bed_file = dd.get_coverage(data)
bcf_out = os.path.join(sample + "_bcbio_variants_stats.txt")
cg_file = os.path.join(sample + "_with-gc.vcf.gz")
parse_file = os.path.join(sample + "_gc-depth-parse.tsv")
qc_file = os.path.join(sample + "_bcbio_variants.txt")
with chdir(work_dir):
if not file_exists(bcf_out):
with open(bcf_out, "w") as out_handle:
yaml.safe_dump(bcfstats, out_handle, default_flow_style=False, allow_unicode=False)
if "vrn_file" not in data or not bed_file:
return None
in_vcf = data['vrn_file']
cleaned_bed = clean_file(bed_file, data)
if file_exists(qc_file):
return qc_file
in_bam = dd.get_align_bam(data) or dd.get_work_bam(data)
ref_file = dd.get_ref_file(data)
assert ref_file, "Need the reference genome fasta file."
bed_file = dd.get_variant_regions(data)
in_bam = dd.get_align_bam(data) or dd.get_work_bam(data)
num_cores = dd.get_num_cores(data)
broad_runner = broad.runner_from_config_safe(data["config"])
if in_bam and broad_runner and broad_runner.has_gatk():
if not file_exists(parse_file):
with file_transaction(cg_file) as tx_out:
params = ["-T", "VariantAnnotator",
"-R", ref_file,
"-L", cleaned_bed,
"-I", in_bam,
"-A", "GCContent",
"-A", "Coverage",
"--variant", in_vcf,
"--out", tx_out]
broad_runner.run_gatk(params)
cg_file = vcfutils.bgzip_and_index(cg_file, data["config"])
if not file_exists(parse_file):
with file_transaction(parse_file) as out_tx:
with open(out_tx, 'w') as out_handle:
print >>out_handle, "CG\tdepth\tsample"
cmd = ("bcftools query -s {sample} -f '[%GC][\\t%DP][\\t%SAMPLE]\\n' -R "
"{bed_file} {cg_file} >> {out_tx}")
do.run(cmd.format(**locals()),
"Calculating GC content and depth for %s" % in_vcf)
logger.debug('parsing coverage: %s' % sample)
if not file_exists(qc_file):
# This files will be copied to final
_summary_variants(parse_file, qc_file)
if file_exists(qc_file) and file_exists(parse_file):
remove_plus(cg_file)
def postprocess_alignment(data):
"""Perform post-processing steps required on full BAM files.
Prepares list of callable genome regions allowing subsequent parallelization.
"""
data = cwlutils.normalize_missing(utils.to_single_data(data))
data = cwlutils.unpack_tarballs(data, data)
bam_file = data.get("align_bam") or data.get("work_bam")
ref_file = dd.get_ref_file(data)
artifacts = gatk.collect_artifact_metrics(data)
if artifacts:
data = dd.update_summary_qc(data, "picard", artifacts.pop(), artifacts)
oxog = gatk.collect_oxog_metrics(data)
data = dd.update_summary_qc(data, "picard", oxog.pop(), oxog)
if vmulti.bam_needs_processing(data) and bam_file and bam_file.endswith(
".bam"):
out_dir = utils.safe_makedir(
os.path.join(dd.get_work_dir(data), "align",
dd.get_sample_name(data)))
bam_file_ready = os.path.join(out_dir, os.path.basename(bam_file))
if not utils.file_exists(bam_file_ready):
utils.symlink_plus(bam_file, bam_file_ready)
bam.index(bam_file_ready, data["config"])
covinfo = callable.sample_callable_bed(bam_file_ready, ref_file, data)
callable_region_bed, nblock_bed = \
callable.block_regions(covinfo.raw_callable, bam_file_ready, ref_file, data)
data["regions"] = {
"nblock": nblock_bed,
"callable": covinfo.raw_callable,
"sample_callable": covinfo.callable,
"mapped_stats": readstats.get_cache_file(data)
}
data["depth"] = covinfo.depth_files
data = coverage.assign_interval(data)
data = samtools.run_and_save(data)
data = recalibrate.prep_recal(data)
data = recalibrate.apply_recal(data)
elif dd.get_variant_regions(data):
callable_region_bed, nblock_bed = \
callable.block_regions(dd.get_variant_regions(data), bam_file, ref_file, data)
data["regions"] = {
"nblock": nblock_bed,
"callable": dd.get_variant_regions(data),
"sample_callable": dd.get_variant_regions(data)
}
return [[data]]
def _get_variant_regions(data):
out = dd.get_variant_regions(data) or dd.get_sample_callable(data)
if merged:
merged_out = dd.get_variant_regions_merged(data)
if merged_out:
out = merged_out
else:
out = merge_overlaps(out, data)
return out
def variants(data):
if "vrn_file" not in data:
return data
if not dd.get_coverage(data):
return data
in_vcf = data["vrn_file"]
work_dir = os.path.join(dd.get_work_dir(data), "report", "variants")
with chdir(work_dir):
in_bam = dd.get_align_bam(data) or dd.get_work_bam(data)
ref_file = dd.get_ref_file(data)
assert ref_file, "Need the reference genome fasta file."
bed_file = dd.get_variant_regions(data)
sample = dd.get_sample_name(data)
in_bam = dd.get_align_bam(data) or dd.get_work_bam(data)
cg_file = os.path.join(sample + "_with-gc.vcf.gz")
parse_file = os.path.join(sample + "_gc-depth-parse.tsv")
num_cores = dd.get_num_cores(data)
broad_runner = broad.runner_from_config_safe(data["config"])
if in_bam and broad_runner and broad_runner.has_gatk():
if not file_exists(cg_file):
with file_transaction(cg_file) as tx_out:
params = [
"-T",
"VariantAnnotator",
"-R",
ref_file,
"-L",
bed_file,
"-I",
in_bam,
"-A",
"GCContent",
"-A",
"Coverage",
"--variant",
in_vcf,
"--out",
tx_out,
]
broad_runner.run_gatk(params)
cg_file = vcfutils.bgzip_and_index(cg_file, data["config"])
if not file_exists(parse_file):
with file_transaction(parse_file) as out_tx:
with open(out_tx, "w") as out_handle:
print >> out_handle, "CG\tdepth\tsample"
cmd = (
"bcftools query -s {sample} -f '[%GC][\\t%DP][\\t%SAMPLE]\\n' -R "
"{bed_file} {cg_file} >> {out_tx}"
)
do.run(cmd.format(**locals()), "Calculating GC content and depth for %s" % in_vcf)
logger.debug("parsing coverage: %s" % sample)
return data
def _get_chroms(data):
"""Retrieve chromosomes included in variant_regions for parallelization.
"""
chroms = set([])
with shared.bedtools_tmpdir(data):
for r in pybedtools.BedTool(dd.get_variant_regions(data)):
chroms.add(r.chrom)
out = []
for c in ref.file_contigs(dd.get_ref_file(data)):
if c.name in chroms:
out.append((c.name, 0, c.size))
return out
def clean_inputs(data):
"""Clean BED input files to avoid overlapping segments that cause downstream issues.
Per-merges inputs to avoid needing to call multiple times during later parallel steps.
"""
if not utils.get_in(data, ("config", "algorithm", "variant_regions_orig")):
data["config"]["algorithm"][
"variant_regions_orig"] = dd.get_variant_regions(data)
clean_vr = clean_file(dd.get_variant_regions(data),
data,
prefix="cleaned-")
merged_vr = merge_overlaps(clean_vr, data)
data["config"]["algorithm"]["variant_regions"] = clean_vr
data["config"]["algorithm"]["variant_regions_merged"] = merged_vr
if dd.get_coverage(data):
if not utils.get_in(data, ("config", "algorithm", "coverage_orig")):
data["config"]["algorithm"]["coverage_orig"] = dd.get_coverage(
data)
clean_cov_bed = clean_file(dd.get_coverage(data),
data,
prefix="cov-",
simple=True)
merged_cov_bed = merge_overlaps(clean_cov_bed, data)
data["config"]["algorithm"]["coverage"] = clean_cov_bed
data["config"]["algorithm"]["coverage_merged"] = merged_cov_bed
if 'seq2c' in get_svcallers(data):
seq2c_ready_bed = prep_seq2c_bed(data)
if not seq2c_ready_bed:
logger.warning(
"Can't run Seq2C without a svregions or variant_regions BED file"
)
else:
data["config"]["algorithm"]["seq2c_bed_ready"] = seq2c_ready_bed
elif regions.get_sv_bed(data):
dd.set_sv_regions(
data,
clean_file(regions.get_sv_bed(data), data, prefix="svregions-"))
return data
def population_variant_regions(items):
"""Retrieve the variant region BED file from a population of items.
If tumor/normal, return the tumor BED file. If a population, return
the BED file covering the most bases.
"""
import pybedtools
if len(items) == 1:
return dd.get_variant_regions(items[0])
else:
paired = vcfutils.get_paired(items)
if paired:
return dd.get_variant_regions(paired.tumor_data)
else:
vrs = []
for data in items:
vr_bed = dd.get_variant_regions(data)
if vr_bed:
vrs.append((pybedtools.BedTool(vr_bed).total_coverage(), vr_bed))
vrs.sort(reverse=True)
if vrs:
return vrs[0][1]
def population_variant_regions(items):
"""Retrieve the variant region BED file from a population of items.
If tumor/normal, return the tumor BED file. If a population, return
the BED file covering the most bases.
"""
import pybedtools
if len(items) == 1:
return dd.get_variant_regions(items[0])
else:
paired = vcfutils.get_paired(items)
if paired:
return dd.get_variant_regions(paired.tumor_data)
else:
vrs = []
for data in items:
vr_bed = dd.get_variant_regions(data)
if vr_bed:
vrs.append((pybedtools.BedTool(vr_bed).total_coverage(), vr_bed))
vrs.sort(reverse=True)
if vrs:
return vrs[0][1]
def run(bam_file, data, out_dir):
"""Run qualimap to assess alignment quality metrics.
"""
# Qualimap results should be saved to a directory named after sample.
# MultiQC (for parsing additional data) picks the sample name after the dir as follows:
# <sample name>/raw_data_qualimapReport/insert_size_histogram.txt
results_dir = os.path.join(out_dir, dd.get_sample_name(data))
resources = config_utils.get_resources("qualimap", data["config"])
options = " ".join(resources.get("options", ""))
report_file = os.path.join(results_dir, "qualimapReport.html")
utils.safe_makedir(results_dir)
pdf_file = "qualimapReport.pdf"
if not utils.file_exists(report_file) and not utils.file_exists(os.path.join(results_dir, pdf_file)):
if "qualimap_full" in tz.get_in(("config", "algorithm", "tools_on"), data, []):
logger.info("Full qualimap analysis for %s may be slow." % bam_file)
ds_bam = bam_file
else:
ds_bam = bam.downsample(bam_file, data, 1e7, work_dir=out_dir)
bam_file = ds_bam if ds_bam else bam_file
if options.find("PDF") > -1:
options = "%s -outfile %s" % (options, pdf_file)
num_cores = data["config"]["algorithm"].get("num_cores", 1)
qualimap = config_utils.get_program("qualimap", data["config"])
max_mem = config_utils.adjust_memory(resources.get("memory", "1G"),
num_cores)
# Fixing the file name: MultiQC picks sample name from BAM file name.
fixed_bam_fname = os.path.join(out_dir, dd.get_sample_name(data) + ".bam")
if not os.path.islink(fixed_bam_fname):
os.symlink(bam_file, fixed_bam_fname)
export = utils.local_path_export()
cmd = ("unset DISPLAY && {export} {qualimap} bamqc -bam {fixed_bam_fname} -outdir {results_dir} "
"--skip-duplicated --skip-dup-mode 0 "
"-nt {num_cores} --java-mem-size={max_mem} {options}")
species = None
if tz.get_in(("genome_resources", "aliases", "human"), data, ""):
species = "HUMAN"
elif any(tz.get_in("genome_build", data, "").startswith(k) for k in ["mm", "GRCm"]):
species = "MOUSE"
if species in ["HUMAN", "MOUSE"]:
cmd += " -gd {species}"
regions = bedutils.merge_overlaps(dd.get_coverage(data) or dd.get_variant_regions(data), data)
if regions:
bed6_regions = _bed_to_bed6(regions, out_dir)
cmd += " -gff {bed6_regions}"
do.run(cmd.format(**locals()), "Qualimap: %s" % dd.get_sample_name(data))
return _parse_qualimap_metrics(report_file, data)
def combine_sample_regions(*samples):
"""Create batch-level sets of callable regions for multi-sample calling.
Intersects all non-callable (nblock) regions from all samples in a batch,
producing a global set of callable regions.
"""
samples = utils.unpack_worlds(samples)
samples = [cwlutils.unpack_tarballs(x, x) for x in samples]
# back compatibility -- global file for entire sample set
global_analysis_file = os.path.join(samples[0]["dirs"]["work"], "analysis_blocks.bed")
if utils.file_exists(global_analysis_file) and not _needs_region_update(global_analysis_file, samples):
global_no_analysis_file = os.path.join(os.path.dirname(global_analysis_file), "noanalysis_blocks.bed")
else:
global_analysis_file = None
out = []
analysis_files = []
batches = []
with shared.bedtools_tmpdir(samples[0]):
for batch, items in vmulti.group_by_batch(samples, require_bam=False).items():
batches.append(items)
if global_analysis_file:
analysis_file, no_analysis_file = global_analysis_file, global_no_analysis_file
else:
analysis_file, no_analysis_file = _combine_sample_regions_batch(batch, items)
for data in items:
vr_file = dd.get_variant_regions(data)
if analysis_file:
analysis_files.append(analysis_file)
data["config"]["algorithm"]["callable_regions"] = analysis_file
data["config"]["algorithm"]["non_callable_regions"] = no_analysis_file
data["config"]["algorithm"]["callable_count"] = pybedtools.BedTool(analysis_file).count()
elif vr_file:
data["config"]["algorithm"]["callable_count"] = pybedtools.BedTool(vr_file).count()
# attach a representative sample for calculating callable region
if not data.get("work_bam"):
for x in items:
if x.get("work_bam"):
data["work_bam_callable"] = x["work_bam"]
out.append([data])
# Ensure output order matches input order, consistency for CWL-based runs
assert len(out) == len(samples)
sample_indexes = {dd.get_sample_name(d): i for i, d in enumerate(samples)}
def by_input_index(xs):
return sample_indexes[dd.get_sample_name(xs[0])]
out.sort(key=by_input_index)
if len(analysis_files) > 0:
final_regions = pybedtools.BedTool(analysis_files[0])
_analysis_block_stats(final_regions, batches[0])
return out
def combine_sample_regions(*samples):
"""Create batch-level sets of callable regions for multi-sample calling.
Intersects all non-callable (nblock) regions from all samples in a batch,
producing a global set of callable regions.
"""
samples = utils.unpack_worlds(samples)
samples = cwlutils.unpack_tarballs(samples, samples[0])
# back compatibility -- global file for entire sample set
global_analysis_file = os.path.join(samples[0]["dirs"]["work"], "analysis_blocks.bed")
if utils.file_exists(global_analysis_file) and not _needs_region_update(global_analysis_file, samples):
global_no_analysis_file = os.path.join(os.path.dirname(global_analysis_file), "noanalysis_blocks.bed")
else:
global_analysis_file = None
out = []
analysis_files = []
batches = []
with shared.bedtools_tmpdir(samples[0]):
for batch, items in vmulti.group_by_batch(samples, require_bam=False).items():
batches.append(items)
if global_analysis_file:
analysis_file, no_analysis_file = global_analysis_file, global_no_analysis_file
else:
analysis_file, no_analysis_file = _combine_sample_regions_batch(batch, items)
for data in items:
vr_file = dd.get_variant_regions(data)
if analysis_file:
analysis_files.append(analysis_file)
data["config"]["algorithm"]["callable_regions"] = analysis_file
data["config"]["algorithm"]["non_callable_regions"] = no_analysis_file
data["config"]["algorithm"]["callable_count"] = pybedtools.BedTool(analysis_file).count()
elif vr_file:
data["config"]["algorithm"]["callable_count"] = pybedtools.BedTool(vr_file).count()
# attach a representative sample for calculating callable region
if not data.get("work_bam"):
for x in items:
if x.get("work_bam"):
data["work_bam_callable"] = x["work_bam"]
out.append([data])
# Ensure output order matches input order, consistency for CWL-based runs
assert len(out) == len(samples)
sample_indexes = {dd.get_sample_name(d): i for i, d in enumerate(samples)}
def by_input_index(xs):
return sample_indexes[dd.get_sample_name(xs[0])]
out.sort(key=by_input_index)
if len(analysis_files) > 0:
final_regions = pybedtools.BedTool(analysis_files[0])
_analysis_block_stats(final_regions, batches[0])
return out
def variants(data):
if "vrn_file" not in data:
return data
if not dd.get_coverage(data):
return data
in_vcf = data['vrn_file']
sample = dd.get_sample_name(data)
cg_file = os.path.join(sample + "_with-gc.vcf.gz")
parse_file = os.path.join(sample + "_gc-depth-parse.tsv")
qc_file = os.path.join(sample + "_bcbio_variants.txt")
work_dir = os.path.join(dd.get_work_dir(data), "report", "variants")
with chdir(work_dir):
if file_exists(qc_file):
return data
in_bam = dd.get_align_bam(data) or dd.get_work_bam(data)
ref_file = dd.get_ref_file(data)
assert ref_file, "Need the reference genome fasta file."
bed_file = dd.get_variant_regions(data)
in_bam = dd.get_align_bam(data) or dd.get_work_bam(data)
num_cores = dd.get_num_cores(data)
broad_runner = broad.runner_from_config_safe(data["config"])
if in_bam and broad_runner and broad_runner.has_gatk():
if not file_exists(cg_file):
with file_transaction(cg_file) as tx_out:
params = [
"-T", "VariantAnnotator", "-R", ref_file, "-L",
bed_file, "-I", in_bam, "-A", "GCContent", "-A",
"Coverage", "--variant", in_vcf, "--out", tx_out
]
broad_runner.run_gatk(params)
cg_file = vcfutils.bgzip_and_index(cg_file, data["config"])
if not file_exists(parse_file):
with file_transaction(parse_file) as out_tx:
with open(out_tx, 'w') as out_handle:
print >> out_handle, "CG\tdepth\tsample"
cmd = (
"bcftools query -s {sample} -f '[%GC][\\t%DP][\\t%SAMPLE]\\n' -R "
"{bed_file} {cg_file} >> {out_tx}")
do.run(cmd.format(**locals()),
"Calculating GC content and depth for %s" % in_vcf)
logger.debug('parsing coverage: %s' % sample)
if not file_exists(qc_file):
# This files will be copied to final
_summary_variants(parse_file, qc_file)
if file_exists(qc_file) and file_exists(parse_file):
os.remove(cg_file)
return data
def combine_sample_regions(*samples):
"""Create batch-level sets of callable regions for multi-sample calling.
Intersects all non-callable (nblock) regions from all samples in a batch,
producing a global set of callable regions.
"""
import pybedtools
samples = [x[0] for x in samples]
# back compatibility -- global file for entire sample set
global_analysis_file = os.path.join(samples[0]["dirs"]["work"], "analysis_blocks.bed")
if utils.file_exists(global_analysis_file) and not _needs_region_update(global_analysis_file, samples):
global_no_analysis_file = os.path.join(os.path.dirname(global_analysis_file), "noanalysis_blocks.bed")
else:
global_analysis_file = None
out = []
analysis_files = []
batches = []
with shared.bedtools_tmpdir(samples[0]):
for batch, items in vmulti.group_by_batch(samples, require_bam=False).items():
batches.append(items)
if global_analysis_file:
analysis_file, no_analysis_file = global_analysis_file, global_no_analysis_file
else:
analysis_file, no_analysis_file = _combine_sample_regions_batch(batch, items)
for data in items:
vr_file = dd.get_variant_regions(data)
if analysis_file:
analysis_files.append(analysis_file)
data["config"]["algorithm"]["callable_regions"] = analysis_file
data["config"]["algorithm"]["non_callable_regions"] = no_analysis_file
data["config"]["algorithm"]["callable_count"] = pybedtools.BedTool(analysis_file).count()
elif vr_file:
data["config"]["algorithm"]["callable_count"] = pybedtools.BedTool(vr_file).count()
highdepth_bed = tz.get_in(["regions", "highdepth"], data)
if highdepth_bed:
data["config"]["algorithm"]["highdepth_regions"] = highdepth_bed
# attach a representative sample for calculating callable region
if not data.get("work_bam"):
for x in items:
if x.get("work_bam"):
data["work_bam_callable"] = x["work_bam"]
out.append([data])
assert len(out) == len(samples)
if len(analysis_files) > 0:
final_regions = pybedtools.BedTool(analysis_files[0])
_analysis_block_stats(final_regions, batches[0])
return out
def assign_interval(data):
"""Identify coverage based on percent of genome covered and relation to targets.
Classifies coverage into 3 categories:
- genome: Full genome coverage
- regional: Regional coverage, like exome capture, with off-target reads
- amplicon: Amplication based regional coverage without off-target reads
"""
genome_cov_thresh = 0.40 # percent of genome covered for whole genome analysis
offtarget_thresh = 0.05 # percent of offtarget reads required to be capture (not amplification) based
if not dd.get_coverage_interval(data):
vrs = dd.get_variant_regions(data)
callable_file = dd.get_sample_callable(data)
if vrs:
seq_size = pybedtools.BedTool(vrs).total_coverage()
else:
seq_size = pybedtools.BedTool(callable_file).total_coverage()
total_size = sum([
c.size
for c in ref.file_contigs(dd.get_ref_file(data), data["config"])
])
genome_cov_pct = seq_size / float(total_size)
if genome_cov_pct > genome_cov_thresh:
cov_interval = "genome"
offtarget_pct = 0.0
else:
offtarget_stats_file = dd.get_offtarget_stats(data)
if not offtarget_stats_file:
offtarget_pct = 0.0
else:
with open(offtarget_stats_file) as in_handle:
stats = yaml.safe_load(in_handle)
if stats.get("offtarget") and stats["mapped_unique"]:
offtarget_pct = float(
stats["offtarget"]) / stats["mapped_unique"]
else:
offtarget_pct = 0.0
if offtarget_pct > offtarget_thresh:
cov_interval = "regional"
else:
cov_interval = "amplicon"
logger.info(
"%s: Assigned coverage as '%s' with %.1f%% genome coverage and %.1f%% offtarget coverage"
% (dd.get_sample_name(data), cov_interval, genome_cov_pct * 100.0,
offtarget_pct * 100.0))
data["config"]["algorithm"]["coverage_interval"] = cov_interval
return data
def run_haplotyper(align_bams, items, ref_file, assoc_files,
region=None, out_file=None):
"""Call variants with Sentieon's haplotyper (GATK HaplotypeCaller like).
"""
if out_file is None:
out_file = "%s-variants.vcf.gz" % utils.splitext_plus(align_bams[0])[0]
if not utils.file_exists(out_file):
variant_regions = bedutils.merge_overlaps(dd.get_variant_regions(items[0]), items[0])
interval = _get_interval(variant_regions, region, out_file, items)
with file_transaction(items[0], out_file) as tx_out_file:
dbsnp = "--dbsnp %s" % (assoc_files.get("dbsnp")) if "dbsnp" in assoc_files else ""
bams = " ".join(["-i %s" % x for x in align_bams])
license = license_export(items[0])
cmd = ("{license}sentieon driver -t 1 -r {ref_file} "
"{bams} {interval} --algo Haplotyper {dbsnp} {tx_out_file}")
do.run(cmd.format(**locals()), "Sentieon TNhaplotyper")
return out_file
def prep_recal(data):
"""Do pre-BQSR recalibration, calculation of recalibration tables.
"""
if dd.get_recalibrate(data) in [True, "gatk"]:
logger.info("Prepare BQSR tables with GATK: %s " % str(dd.get_sample_name(data)))
dbsnp_file = tz.get_in(("genome_resources", "variation", "dbsnp"), data)
if not dbsnp_file:
logger.info("Skipping GATK BaseRecalibrator because no VCF file of known variants was found.")
return data
broad_runner = broad.runner_from_config(data["config"])
data["prep_recal"] = _gatk_base_recalibrator(broad_runner, dd.get_align_bam(data),
dd.get_ref_file(data), dd.get_platform(data),
dbsnp_file, dd.get_variant_regions(data), data)
elif dd.get_recalibrate(data) == "sentieon":
logger.info("Prepare BQSR tables with sentieon: %s " % str(dd.get_sample_name(data)))
data["prep_recal"] = sentieon.bqsr_table(data)
elif dd.get_recalibrate(data):
raise NotImplementedError("Unsupported recalibration type: %s" % (dd.get_recalibrate(data)))
return data
def get_base_cnv_regions(data, work_dir):
"""Retrieve set of target regions for CNV analysis.
Subsets to extended transcript regions for WGS experiments to avoid
long runtimes.
"""
cov_interval = dd.get_coverage_interval(data)
base_regions = regions.get_sv_bed(data)
# if we don't have a configured BED or regions to use for SV caling
if not base_regions:
# For genome calls, subset to regions within 10kb of genes
if cov_interval == "genome":
base_regions = regions.get_sv_bed(data, "transcripts1e4", work_dir)
if base_regions:
base_regions = remove_exclude_regions(base_regions, base_regions, [data])
# Finally, default to the defined variant regions
if not base_regions:
base_regions = dd.get_variant_regions(data)
return base_regions
def get_base_cnv_regions(data, work_dir, genome_default="transcripts1e4", include_gene_names=True):
"""Retrieve set of target regions for CNV analysis.
Subsets to extended transcript regions for WGS experiments to avoid
long runtimes.
"""
cov_interval = dd.get_coverage_interval(data)
base_regions = get_sv_bed(data, include_gene_names=include_gene_names)
# if we don't have a configured BED or regions to use for SV caling
if not base_regions:
# For genome calls, subset to regions near genes as targets
if cov_interval == "genome":
base_regions = get_sv_bed(data, genome_default, work_dir, include_gene_names=include_gene_names)
if base_regions:
base_regions = remove_exclude_regions(base_regions, base_regions, [data])
# Finally, default to the defined variant regions
if not base_regions:
base_regions = dd.get_variant_regions(data)
return bedutils.clean_file(base_regions, data)