{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,2,21]],"date-time":"2025-02-21T21:32:43Z","timestamp":1740173563453,"version":"3.37.3"},"reference-count":37,"publisher":"Endocrinology Research Centre","issue":"2","license":[{"start":{"date-parts":[[2023,5,11]],"date-time":"2023-05-11T00:00:00Z","timestamp":1683763200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.probl-endojournals.ru\/jour\/about\/editorialPolicies#openAccessPolicy"}],"content-domain":{"domain":["www.probl-endojournals.ru"],"crossmark-restriction":true},"short-container-title":["Probl Endokrinol (Mosk)"],"abstract":"<jats:p><jats:bold>BACKGROUND:<\/jats:bold> In 90% cases of girls and 25\u201360% cases of boys the cause of gonadotropin-dependent precocious puberty (PP) is unclear. Up to 25\u201327.5% of gonadotropin-dependent PP cases are monogenic and suggest autosomal-dominant inheritance with incomplete sex-dependent penetrance. To date, mutations in genes KISS1, KISS1R, MKRN3, DLK1 have been described as causal variants leading to precocious hypothalamic-pituitary axis activation in childhood. Genetic testing in patients with hereditary forms of PP can expand our knowledge of underlying molecular mechanisms of the disease and it \u00a0is also necessary for genetic counselling.<\/jats:p><jats:p><jats:bold>AIM:<\/jats:bold> To study clinical features and genetic characteristics of patients with idiopathic gonadotropin-dependent precocious puberty.<\/jats:p><jats:p><jats:bold>MATERIALS AND METHODS<\/jats:bold>: A group of patients with idiopathic gonadotropin-dependent precocious puberty and positive family history (early or precocious puberty) was examined. Laboratory and instrumental diagnostic tests, full-exome sequencing (NGS, next-generation sequencing) were provided for all patients.<\/jats:p><jats:p><jats:bold>RESULTS:<\/jats:bold> The study included 30 patients (29 girls, 1 boy) with idiopathic gonadotropin-dependent precocious puberty. The median of patients age at the time of the examination was 7,2 years [6,5; 7,7]. Positive family history presented in all cases: in 40% of patients on father\u2019s side, in 37% \u2014 on mother\u2019s side, in 23% of patients PP was diagnosed in siblings. The fullexome sequencing was conducted to 21 patients: in 61,9% of cases (95% CI [40;79]) nucleotide variants were identified\u00a0 \u00a0in genes, associated with gonadotropin-dependent precocious puberty. MKRN3 gene defect was detected in most cases (77% cases (95% CI [49; 92]), which consistent with international data on its highest prevalence in the monogenic forms of PP. In 23% of cases (95% CI [7; 50]) nucleotide variants were identified in other candidate genes associated with neuroontogenesis and neuroendocrine regulation mechanisms of hypothalamic-pituitary axis.<\/jats:p><jats:p><jats:bold>CONCLUSION:<\/jats:bold> Our study confirms that detailed family history data in children with PP provides a rational approach to molecular-genetic testing. Data of inheritance pattern and clinical manifestations will simplify the diagnosis of hereditary forms of disease and enhance genetic counselling of families, followed by timely examination and administration of pathogenetic therapy.<\/jats:p>","DOI":"10.14341\/probl13215","type":"journal-article","created":{"date-parts":[[2023,5,15]],"date-time":"2023-05-15T17:47:44Z","timestamp":1684172864000},"page":"58-66","update-policy":"https:\/\/doi.org\/10.14341\/crossmarkpolicy2018","source":"Crossref","is-referenced-by-count":0,"title":["Gonadotropin-dependent precocious puberty: genetic and clinical characteristics"],"prefix":"10.14341","volume":"69","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8625-7661","authenticated-orcid":true,"given":"D. 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