PPP1R3C and gastric adenocarcinoma: Among 29 identified glycogen metabolism genes in the meta-cohort, higher expression levels of CALM1, GYG1, GBE1, PYGM, PYGL, PYGB, PHKG1, PPP1R3C, PPP1R3B, PPP1R3A, PPP1CB, PPP1CA, and PGM1 were correlated with worse overall survival OS in STAD patients.