This document outlines the steps for variant calling and SNP prioritization in mouse RNA sequencing datasets. It involves mapping reads to a reference genome using STAR aligner, marking duplicates and sorting reads. Variant calling is performed using GATK HaplotypeCaller. Base quality score recalibration and variant filtering are then applied. Effect predictors like VEP and SnpEff are used to annotate variants. MAFtools is used to convert variants to MAF format and analyze mutation annotation files.