CFTR and neoplasm: As we examined the glycopeptides containing CF sites quantified in >75% of TMT reporter channels (Supplementary Data 8), we observed 88 and 24 CF glycosylation events that were up- and down-regulated in tumor tissues (FDR < 0.01 and fold change ≥1.5) relative to normal, respectively (Fig. 5a and Supplementary Data 9).