I am studying the minor allele frequency (MAF) over different datasets. Geneticists used to exclude SNPs with MAF under certain small values. In big databases and projects like 1000 genome-project (MAF=0.01) and HapMap-project (MAF=0.05), they've mentioned the value of the MAF threshold. I want to know the values of the MAF threshold adopted in The Cancer Genome Atlas (TCGA) and Personal Genome Project (PGP).
For PGP, please inquire direct to the UK team at UCL: https://www.personalgenomes.org.uk/
For the TCGA, I am not sure that minor allele frequency was used for the purpose of filtering somatic variants. Please check the materials and methods of the published works relating to TCGA data.