No association between BMI and striatal dopamine transporter (DAT) availability was found using 123I‐FP‐CIT,79 whereas a negative association was observed in obesity using (–)‐2‐β‐Carbomethoxy‐3‐β‐(4‐fluorophenyl)tropane (β‐CFT, WIN 35,428) (3H‐WIN35,428) tracer80 and in participants without obesity (BMI 18–30 kg/m2) using TRODAT‐1 tracer.81 The gene discussed is SLC6A3; the disease is obesity due to melanocortin 4 receptor deficiency.