Pearson's correlation test, Spearman's correlation test, and linear regression were applied to evaluate the association between parameters at early and late time points.<h4>Results</h4>Fasting insulin and C-peptide at MTT1 were associated with insulin resistance measured by Homeostatic Model Assessment of Insulin Resistance (HOMA-IR) later in pregnancy (r=0.752, p<0.001; and r=0.825, p<0.001, respectively). This evidence concerns the gene INS and Insulin resistance.