While few studies included in the meta-analysis explored associations between PFAS and hormone-receptor subtypes among postmenopausal women, a possible positive association between PFOA and ER- tumors was noted (RR = 1.55, 95% CI 0.90–2.67), with no association between PFOA and ER + cancers (RR = 0.97, 95% CI 0.67–1.39). The gene discussed is NR4A1; the disease is cancer.