hrp0082p1-d1-136 | Growth | ESPE2014

A Homozygous Point Mutation in the GH1 Promoter (−161T>C) Leads to Reduced GH Expression in Siblings with Isolated GH Deficiency

Madeira Joao , Martin Regina , Montenegro Luciana , Franca Marcela , Costalonga Everlayny , Correa Fernanda , Otto Aline , Arnhold Ivo , Freitas Helayne , Machado Ubiratan , Mendonca Berenice , Jorge Alexander , Carvalho Luciani

Introduction: Mutations in the GH1 promoter are a rare cause of isolated GH deficiency (IGHD). In order to find the molecular cause of short stature due to IGHD, three siblings (2 M) born to consanguineous parents without mutations in the GHRHR and GH1 coding regions were screened for mutations in the GH1 promoter and locus control region. All patients harbored two variants (c.−123T>C and −161C>T) in homozygous state in the GH1 promoter, not found in 100 co...