Congenital leptin deficiency is a form of monogenic obesity characterised by severe early-onset obesity and marked hyperphagia .
Does congenital leptin deficiency cause obesity?
<s>[INST] Answer the question truthfully, you are a medical professional. This is the question: Does congenital leptin deficiency cause obesity? [/INST] \n Congenital leptin deficiency is a form of monogenic obesity characterised by severe early-onset obesity and marked hyperphagia .</s>