hrp0084p2-338 | Fat | ESPE2015

A Novel Melanocortin-4-Receptor Gene Mutation Associated with Early Onset Severe Obesity

Toumba Meropi , Shammas Christos , Neocleous Vassos , Phelan Marie , Skordis Nicos , Phylactou Leonidas , Mantzoros Christos

Background: The melanocortin-4-receptor gene (MC4R) is a key regulator for appetite and satiety. MC4R mutations account for 6–8% of severe obesity in children with variable expression and penetrance.Case presentation: A 3-year-old girl is presented with severe early onset and progressive obesity. She was born full-term with appropriate of gestational age weight by non-consanguineous parents. She had normal psychomotor milestones an...

hrp0086rfc12.5 | Neuroendocrinology | ESPE2016

A Novel MKRN3 Nonsense Mutation Causing Familial Central Precocious Puberty

Christoforidis Athanasios , Skordis Nicos , Fanis Pavlos , Dimitriadou Meropi , Sevastidou Maria , Phelan Marie M. , Neocleous Vassos , Phylactou Leonidas A.

Background: The onset of puberty is influenced by the interplay of stimulating and restraining factors, many of which have a genetic origin. Premature activation of the GnRH secretion in central precocious puberty (CPP) may arise either from gain-of-function mutations of the KISS1 and KISS1R genes or loss-of-function manner mutations of the MKRN3 gene leading to MKRN3 deficiency.Objective and hypotheses: Explore the genetic cau...

hrp0086p1-p730 | Pituitary and Neuroendocrinology P1 | ESPE2016

MKRN3 Mutations and Central Precocious Puberty

Neocleous Vassos , Toumba Meropi , Sevastidou Maria , Phelan Marie M , Shammas Christos , Nicolaou Stella , Stylianou Charilaos , Christoforidis Athanasios , Fanis Pavlos , Phylactou Leonidas A , Skordis Nicos

Background: Central precocious puberty (CPP) results from premature activation of the hypothalamic-pituitary-gonadal axis and increasing evidence suggests a genetic origin. Premature activation of the GnRH secretion in CPP may arise either from gain-of-function mutations of the KISS1 and KISS1R genes or loss-of-function manner mutations of the MKRN3 gene leading to MKRN3 deficiency.Objective and hypotheses: To identify loss-of-...