Hi

I know by 

    sp_url <- paste("https://cancer.sanger.ac.uk/cancergenome/assets/",
    +                 "signatures_probabilities.txt", sep = "")

implemented in `MutationalPattern` R package

I can download mutational signatures from the COSMIC website but version 2 (30 signatures)

Anyone knows where I can obtain these probabilities for version 3 (60 signatures)

Thanks in advance
[Here][1] you can download SBS, DBS and ID probabilities for PCAWG reference signatures. Make sure which one are you using, there is one from SigProfiler and the other from SignatureAnalyzer, two methods used in original publication. 


  [1]: https://www.synapse.org/#!Synapse:syn12009743