Supplementary Table 1: Clinicopathological Parameters of samples used Supplementary Table 2: Read Mapping Statistics of NanoChIP-seq Libraries Supplementary Table 3: Non coding RNAs associated with Somatic Promoters Supplementary Table 4: Alternative Promoters Supplementary Table 5: Spectral Counts from CRC samples of N terminal peptides predicted to be gained in GC Supplementary Table 6: HLA prediction of GC samples Supplementary Table 7: Recurrent N terminal sequences with high affinity to MHC Class I Supplementary Table 8: P values of Wilcoxon test between ACRG samples with high and low somatic promoter usage Supplementary Table 9: HLA types of healthy PBMC donors Supplementary Table 10: Peptide pools for alternative promoters Supplementary Table 11: Cytokine Responses of N terminal Peptides Supplementary Table 12: Somatic Promoters Overlapping EZH2/SUZ12 Binding Sites Supplementary Table 13: RACE Primers</p