GPC4 and polycystic ovary syndrome: The glypican-4 levels were similar between PCOS and controls in the lean group (1.8 ng/mL vs. 1.2 ng/mL, p = 0.124), whereas overweight/obese PCOS women showed higher levels than the BMI- matched controls (3.9 ng/mL vs. 2.9 ng/mL, p < 0.001).