hrp0094p1-116 | Fat, Metabolism and Obesity B | ESPE2021

An Evidence-based Framework to Evaluate Melanocortin-4 Receptor (MC4R) Pathway Relevance for Obesity-associated Genes

Vogel Megan , Moeller Ida , Garfield Alastair , Shah Bhavik ,

Background: The MC4R pathway is the principal regulator of mammalian energy balance through its modulation of energy intake and energy expenditure. Variants in genes associated with the MC4R pathway can result in rare genetic diseases of obesity. Clinical data in patients with genetic defects in the MC4R pathway indicate that setmelanotide, an MC4R agonist, can effectively reduce weight and hunger in scientifically rationalized obese subpopulations in which MC...

hrp0094p2-179 | Fat, metabolism and obesity | ESPE2021

Frequency of MC4R Pathway Variants in a Large US Cohort of Pediatric and Adult Patients with Severe Obesity

Bend Eric , Antao Tiago , Ichetovkin Ilia , Norton Rick , Garfield Alastair , Moeller Ida ,

Background: The melanocortin-4 receptor (MC4R) pathway is critical for the regulation of energy balance. Variants in a number of genes within this pathway have well-established associations with severe obesity. However, the overall frequency of rare variants in these genes has not been assessed systematically in a clinically relevant population, and it is unknown whether variant frequency differs depending on the age of ascertainment. Genetic testing can impro...