title: Mutational analysis of TAC and TACR3 in idiopathic central precocious puberty.
abstract: BACKGROUND
  The genetic background of idiopathic central precocious puberty (ICPP) is not well understood, and is thought to arise from the effect of multiple genes. Familial ICPP have been reported suggesting the existence of monogenic causes of ICPP. The neurokinin B (NKB) system has recently been implicated in the regulation of the human reproductive axis. In humans, NKB and its receptor are encoded by the TAC3 and TACR3 genes, respectively. Mutations in these genes have been suggested to be causative for ICPP.
  
  
  METHODS
  ICPP was defined by pubertal onset before 8 yrs of age in girls, and a pubertal LH response to GnRH testing. Twenty eight girls with ICPP were included in the study (age at diagnosis was 5.72±2.59; bone age, 6.12±2.81, height at the start of treatment, 0.90±1.48 SD). LHRH test was performed and was pubertal in all subjects (LH 20.35±32.37 mIU/ml; FSH 23.32±15.72 mIU/ml). The coding regions of TAC and TACR3 were sequenced.
  
  
  RESULTS
  No rare variants were detected in TAC and TACR3 in the 28 subjects with ICPP.
  
  
  CONCLUSIONS
  We confirmed that mutations in TAC and TACR3 are not a common cause for ICPP.
authors.affiliation: Medical Faculty, Skopje, R. Macedonia.
authors.forename: Marina
authors.initials: M
authors.lastname: Krstevska-Konstantinova
authors.affiliation: Medical Faculty, Skopje, R. Macedonia.
authors.forename: Velibor B
authors.initials: VB
authors.lastname: Tasic
authors.forename: Luciana Ribeiro
authors.initials: LR
authors.lastname: Montenegro
authors.forename: Donco
authors.initials: D
authors.lastname: Dervisov
authors.forename: Daiane
authors.initials: D
authors.lastname: Beneduzzi
authors.forename: Leticia F
authors.initials: LF
authors.lastname: Gontijo Silveira
authors.forename: Zoran S
authors.initials: ZS
authors.lastname: Gucev
mesh_terms: D002675:Child, Preschool; D004247:DNA / Q000235:genetics*; D004252:DNA Mutational Analysis; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D009154:Mutation; D015287:Neurokinin B / Q000235:genetics* / Q000378:metabolism; D011629:Puberty, Precocious / Q000235:genetics* / Q000378:metabolism; D018042:Receptors, Neurokinin-3 / Q000235:genetics* / Q000378:metabolism
chemical_list: D018042:Receptors, Neurokinin-3; C000601382:TAC3 protein, human; C000601381:TACR3 protein, human; D015287:Neurokinin B; D004247:DNA