GCKR and endometriosis: In both endometriosis/non-endometriosis subjects, the observed/expected SHBG-linked SNP genotype distribution fully meets the Hardy–Weinberg Equilibrium (HWE) standard (PHWE > 0.05): in the endometriosis group, the PHWE for the studied loci was in the range of 0.085 [rs440837 (A > G) ZBTB10]—0.763 [rs4149056 (T > C) SLCO1B1], and in the control group, PHWE—0.052 [rs3779195 (T > A) BAIAP2L1]—0.891 [rs780093 (C > T) GCKR] (Table S1).