I found there are 460 cases in COAD from Firebrowse. But in the downloaded Mutation Annotation files, there are only 154 MAF files. I'd like to know why there is significantly less MAF files than case number?
And in the downloaded Raw Mutation Annotation files, there are 367 MAF files (still less than case number). What's the difference between Raw Annotation MAF and Annotation MAF? Why half of the MAF files are filtered in Annotation MAFs?