Central precocious puberty occurring in Bardet‑Biedl syndrome‑10 as a method for self‑protection of human reproductive function: A case report

Li,Hanming; He,Jianyu; Leong,Iatlun; Huang,Runxiao; Shi,Xiaojie

doi:10.3892/etm.2022.11511

Central precocious puberty occurring in Bardet‑Biedl syndrome‑10 as a method for self‑protection of human reproductive function: A case report

Authors:
- Hanming Li
- Jianyu He
- Iatlun Leong
- Runxiao Huang
- Xiaojie Shi
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Affiliations: Department of Children's Health Care, Fifth People's Hospital of Foshan City, Foshan, Guangdong 528211, P.R. China, Department of General Surgery, University Hospital of Macau Special Administrative Region, Macau Special Administrative Region 999078, P.R. China
Published online on: July 15, 2022 https://doi.org/10.3892/etm.2022.11511
Article Number: 574
Copyright: © Li et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Hypogonadism and obesity are primary features of Bardet‑Biedl syndrome (BBS). Obesity is also an associated factor of central precocious puberty (CPP). The present report describes the case of a girl (age, 7 years and 6 months), with clinical manifestations of precocious puberty, progressive obesity, postaxial polydactyly, retinal degeneration and intellectual disability. The patient visited the clinic for the first time due to early breast development and progressive obesity. After 8 months of follow‑up, the bone age had advanced almost 3 years, and the gonadotropin‑releasing hormone (GnRH) stimulation test showed results that had changed from indicating pseudo precocious puberty to CPP. Whole‑exome gene sequencing showed that there were two heterozygous mutations in the BBS type 10 (BBS10) gene, chr12:76739816(c.1949del) and chr12:76740374(c.1391C>G). The final diagnosis was of BBS10 and CPP. In order to protect the reproductive capacity of the patient, GnRH analogs were used for CPP treatment. After 15 months of treatment and follow‑up, a physical examination revealed Tanner breast stage 1. Ultrasonography showed that the uterus and ovaries had reduced to their prepubertal size. In conclusion, the present report describes a case of CPP that occurred in a young girl with BBS10. We hypothesize that this was a prelude to gonad dysplasia, acting as a method for the self‑protection of human reproductive function. However, more clinical data and molecular biological evidence are required to confirm the etiology and mechanism of this case.

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