REEP5 and Merkel cell skin cancer: The duplicated genes were adenomatous polyposis coli (APC); signal recognition particle 19 kDa (SRP19); U2 small nuclear ribonucleoprotein auxiliary factor 35 kDa subunit-related protein 1 (ZRSR1); receptor accessory protein 5 (REEP5); decapping mRNA 2 (DCP2); mutated in colorectal cancers (MCC); and testis-specific serine kinase 1B (TSSK1B).