hello everyone. so, I have called somatic variants using GATK Mutect2 for tumor normal samples, and then annotated them with the web version of annnovar available, and after the annotation procedure I got a .csv file. now I want to convert that .csv file into a conventional vcf file for variant prioritization. I tried converting the file using Microsoft excel. but the resulting tab delimited file is not recognized as a valid input for the prioritization tools. can any one help?