Among the Black women in the study, there was a reduced hazard of death for those who attended religious services on holidays only (HR = 0.46, CI: 0.28–0.76), once per week (HR = 0.48, CI: 0.29–0.80), more than once per week (HR = 0.43, CI: 0.25–0.72) compared to those who did not attend religious meetings/services adjusting for age at diagnosis, time from cohort enrollment to diagnosis, income, education, marital status, insurance, HER2, tumor ER status, and tumor PR status. This evidence concerns the gene ERBB2 and neoplasm.