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Updated: Jul 7, 2026
12:49
Mutagenesis and Analysis of Genetic Mutations in the GC-rich KISS1 Receptor Sequence Identified in Humans with Reproductive Disorders
Published on: September 4, 2011
A GPR54-activating mutation in a patient with central precocious puberty
Milena Gurgel Teles1, Suzy D C Bianco, Vinicius Nahime Brito
1Developmental Endocrinology Unit, Medical Investigation Laboratory, Clinicas Hospital, São Paulo University Medical School, São Paulo.
The New England Journal of Medicine
|February 15, 2008
Summary
A GPR54 gene mutation, Arg386Pro, was found in a girl with central precocious puberty. This mutation causes prolonged signaling, suggesting a link to early puberty development.
Area of Science:
- Endocrinology
- Genetics
- Molecular Biology
Background:
- Central precocious puberty (CPP) involves early activation of the hypothalamic-pituitary-gonadal axis.
- The G protein-coupled receptor 54 (GPR54) and its ligand, kisspeptin, regulate gonadotropin-releasing hormone (GnRH) secretion.
- Idiopathic CPP is common in girls, with underlying genetic causes often unidentified.
Observation:
- An autosomal dominant GPR54 mutation (Arg386Pro) was identified in an adopted girl with idiopathic CPP.
- The patient's biological family was unavailable for genetic analysis.
- In vitro studies were conducted to assess the mutation's functional impact.
Findings:
- The Arg386Pro mutation results in prolonged intracellular signaling pathway activation upon kisspeptin stimulation.
- This hyperactivation of the GPR54 pathway is linked to the development of CPP.
- The identified mutation provides a potential genetic explanation for the patient's condition.
Implications:
- This finding highlights the critical role of the GPR54-kisspeptin system in pubertal timing.
- The Arg386Pro mutation serves as a specific genetic marker associated with central precocious puberty.
- Further research into GPR54 mutations could reveal more genetic underpinnings of CPP and inform diagnostic strategies.
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