GJA1 and neoplasm: Significantly better RFS was linked with tumors showing: elevated (>median) Cx32 mRNA levels in the whole patient cohort; elevated Cx43 mRNA levels in a tumor group similar to SEER prevalence (Fig. 1a), in the ER positive tumors, in the Luminal A group, in the ER and lymph node positive tumors (Fig. 1b) and in ER positive endocrine treated tumors (Fig. 1c).