Tag: MUTECT2

What sequencing/alignment artifact is this?

What sequencing/alignment artifact is this? 0 I’m calling mitochondria variants with mutect2 and one variant looks like an artifact but I don’t understand what could be the cause. It looks like from IGV (picture below) that this variant is always at the same position on forward and backward reads. Also…

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GDCquery_Maf error

GDCquery_Maf error 0 @76e1237b Last seen 1 day ago Singapore Hi all, I really need some help. I am trying to run GDCquery_Maf which worked fine until yesterday. Now I get the following error: Error in GDCquery(paste0(“TCGA-“, tumor), data.category = “Simple Nucleotide Variation”, : Please set a valid workflow.type argument…

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A genomic mutation spectrum of collecting duct carcinoma in the Chinese population

This article was originally published here BMC Med Genomics. 2022 Jan 3;15(1):1. doi: 10.1186/s12920-021-01143-2. ABSTRACT BACKGROUND: Renal collecting duct carcinoma (CDC) is a rare and lethal subtype of renal cell carcinoma (RCC). The genomic profile of the Chinese population with CDC remains unclear. In addition, clinical treatments are contradictory. In…

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Cancer Mutation Detection Depends on Choices at Each Step of Sequencing, Analysis Pipeline

NEW YORK — An international team of researchers has examined how variations in sequencing approaches can influence the ability to accurately detect cancer mutations, providing guidance for the wider community. The team additionally developed a set of reference samples for benchmarking efforts. Next-generation sequencing approaches are increasingly being adopted to…

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Separate vcf file creation for matched tumor-normal samples

Separate vcf file creation for matched tumor-normal samples 0 I have received 8 matched normal tumor vcf files from our collaborators. For some reason, they didn’t provide the sequence bam files and called the variants themselves (by aligning with the reference hg19 genome for both pairs separately). Basically, I have…

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GATK CalculateContamination – zeros in output

GATK CalculateContamination – zeros in output 2 Hi, I am new to exome-seq and would be grateful for any suggestions 🙂 I want to run GATK CalculateContamination (GATK 4.1.8.1), before calling variants with MuTect2. CalculateContamination tool returns “SUCCESS” message, but with warnings, and I get only “0” values in my…

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Gene mutation analysis in papillary thyroid carcinoma

Introduction Thyroid tumors are the most common malignant tumors of the endocrine system, and their incidence has been increasing in the recent decades. Currently, there are some target drugs that can effectively treat PTC, and next-generation sequencing (NGS) can be used for targeted therapy. In order to make better informed…

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Contig chr1 given as location, but this contig isn’t present in the Fasta sequence dictionary

Badly formed genome unclippedLoc: Contig chr1 given as location, but this contig isn’t present in the Fasta sequence dictionary 2 Hi everyone, I’m trying to run Mutect2 for WES cancer data. However, since their Resource bundle only supports h19 seems I cannot proceed (I want to compare it with Strelka2…

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Mapping quality and XS score

Mapping quality and XS score 0 Hi, I am currently looking through bam files using igv to manually check if the mutations not called by Mutect2 are really an error or not. Until now, to filter reads with low quality, I have used only MAPQ > 30 and didn’t consider…

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