GATK LEFTALIGNANDTRIMVARIANTS
Run gatk LeftAlignAndTrimVariants
URL: https://gatk.broadinstitute.org/hc/en-us/articles/360037225872-LeftAlignAndTrimVariants
Example
This wrapper can be used in the following way:
rule gatk_leftalignandtrimvariants:
input:
vcf="calls/test_split_with_AS_filters.vcf",
ref="Homo_sapiens_assembly38.chrM.fasta",
fai="Homo_sapiens_assembly38.chrM.fasta.fai",
dict="Homo_sapiens_assembly38.chrM.dict",
# intervals="intervals.bed", # optional
output:
vcf="calls/split_multiallelics.vcf",
log:
"logs/gatk/leftalignandtrimvariants.log",
params:
extra="--split-multi-allelics", # optional
java_opts="", # optional
resources:
mem_mb=1024,
wrapper:
"v3.9.0-1-gc294552/bio/gatk/leftalignandtrimvariants"
Note that input, output and log file paths can be chosen freely.
When running with
snakemake --use-conda
the software dependencies will be automatically deployed into an isolated environment before execution.
Notes
The java_opts param allows for additional arguments to be passed to the java compiler, e.g. -XX:ParallelGCThreads=10 (not for -XmX or -Djava.io.tmpdir, since they are handled automatically).
The extra param allows for additional program arguments.
Software dependencies
gatk4=4.5.0.0
snakemake-wrapper-utils=0.6.2
Input/Output
Input:
A variant call set to left-align and trim
Output:
A left-aligned VCF
Code
"""Snakemake wrapper for GATK LeftAlignAndTrimVariants"""
__author__ = "Dmitry Bespiatykh"
__copyright__ = "Copyright 2023, Dmitry Bespiatykh"
__license__ = "MIT"
import tempfile
from snakemake.shell import shell
from snakemake_wrapper_utils.java import get_java_opts
extra = snakemake.params.get("extra", "")
java_opts = get_java_opts(snakemake)
log = snakemake.log_fmt_shell(stdout=True, stderr=True)
intervals = snakemake.input.get("intervals", "")
if not intervals:
intervals = snakemake.params.get("intervals", "")
if intervals:
intervals = "--intervals {}".format(intervals)
with tempfile.TemporaryDirectory() as tmpdir:
shell(
"gatk --java-options '{java_opts}' LeftAlignAndTrimVariants"
" --variant {snakemake.input.vcf}"
" --reference {snakemake.input.ref}"
" {intervals}"
" {extra}"
" --tmp-dir {tmpdir}"
" --output {snakemake.output.vcf}"
" {log}"
)