SLC30A1 and polycystic ovary syndrome: However, ZNT1 expression did not associate with the two PPARG isoforms (PPARG1, p = 0.2311; PPARG2, p = 0.1826), although when analyzing non-PCOS and PCOS women separately, as for ZIP14, a significant correlation with PPARG1 was observed in PCOS women (r = −0.34, p = 0.0401) but not in non-PCOS women (r = 0.13, p = 0.5685).