A study summarized genomic data from MSI-H tumors from multiple cancer types and found that several DNA repair pathways other than MMR, including ataxia telangiectasia and Rad3-related (ATR), base excision repair (BER), homologous recombination (HR), and non-homologous end joining (NHEJ), are altered by SNV and microsatellite mutations. This evidence concerns the gene ATR and cancer.