Hypogonadotropic Hypogonadism due to Novel FGFR1 Mutations.

TitleHypogonadotropic Hypogonadism due to Novel FGFR1 Mutations.
Publication TypeJournal Article
Year of Publication2017
AuthorsAkkuş, G, Kotan, LDamla, Durmaz, E, Mengen, E, Turan, İ, Ulubay, A, Gürbüz, F, Yüksel, B, Tetiker, T, A Topaloğlu, K
JournalJ Clin Res Pediatr Endocrinol
Date Published2017 Jun 01
KeywordsAdolescent, Adult, Family Health, Female, Genetic Predisposition to Disease, Genotype, Humans, Hypogonadism, Klinefelter Syndrome, Male, Mutation, Pedigree, Phenotype, Puberty, Delayed, Receptor, Fibroblast Growth Factor, Type 1, Young Adult

OBJECTIVE: The underlying genetic etiology of hypogonadotropic hypogonadism (HH) is heterogeneous. Fibroblast growth factor signaling is pivotal in the ontogeny of gonadotropin-releasing hormone neurons. Loss-of-function mutations in FGFR1 gene cause variable HH phenotypes encompassing pubertal delay to idiopathic HH (IHH) or Kallmann syndrome (KS). As FGFR1 mutations are common, recognizing mutations and associated phenotypes may enhance clinical management.

METHODS: Using a candidate gene approach, we screened 52 IHH/KS patients.

RESULTS: We identified three novel (IVS3-1G>C and p.W2X, p.R209C) FGFR1 gene mutations. Despite predictive null protein function, patients from the novel mutation families had normosmic IHH without non-reproductive phenotype.

CONCLUSION: These findings further emphasize the great variability of FGFR1 mutation phenotypes in IHH/KS.

Alternate JournalJ Clin Res Pediatr Endocrinol
PubMed ID28008864
PubMed Central IDPMC5463295
Grant ListUM1 HG006504 / HG / NHGRI NIH HHS / United States