Women with GDM had a pre-gestational body weight, BMI, sBP values and TNF-α levels significantly higher than NGT women: median [Q1–Q3,], (3.2 [2.0–4.7] vs. 2.4 [1.8–3.5] pg/mL; p < 0.01. The gene discussed is TNF; the disease is gestational diabetes.