The follow-up values of glucose, HOMA-IR, HbA1, FSH, and LH were higher in women with uncompensated vitamin D insufficiency than in the remaining groups but did not differ between women with compensated vitamin D deficiency/insufficiency and the control group (Figure 2, Figure 3 and Figure 4 and Supplementary Table S1). This evidence concerns the gene PLOD1 and vitamin D deficiency.