To investigate the clinical and genetic characteristics of patients with idiopathic hypogonadotropic hypogonadism (IHH), the clinical data of 23 patients with IHH were retrospectively analyzed. Gene analyses were accomplished with whole-exome sequencing (WES) and Sanger sequencing. Functional prediction of mutation sites was conducted using two bioinformatics platforms, SIFT and Polyphen. Among the 23 patients with IHH, 9 patients carried prokinin 2 (PROKR2) gene mutations including 4 missense mutations (p.W178S, p.Y113H, p.A103V, p.R164Q), and 1 frameshift mutation (p.D42delinsDED), the remaining 14 cases were found negative in gene sequencing. Functional prediction showed that the above mutations may affect protein function suggestive of a pathogenic role of PROKR2 mutation in the patients. There were no significant differences in the levels of follicle-stimulating hormone, luteinizing hormone, testosterone, and estradiol between the IHH patients with PROKR2 gene mutation and those without. PROKR2 gene mutation might associated with IHH, and the mutations reported in the present study could enrich the pathogenic spectrum of genes.
为探讨特发性低促性腺激素性性腺功能减退症（IHH）患者的临床及遗传学特征，回顾性分析23例IHH患者的临床资料，应用全外显子测序（WES）结合Sanger方法进行基因分析，SIFT和Polyphen 2种生物信息学平台对突变位点进行功能预测。结果显示，在23例IHH患者中，9例患者存在前激动素2（PROKR2）基因突变，其中4种错义突变（p.W178S、p.Y113H、p.A103V、p.R164Q），1种移码突变（p.D42delinsDED），功能预测显示以上突变可能是该病的致病基因，余14例阴性。IHH患者无论PROKR2基因突变有无，其卵泡刺激素、黄体生成素、睾酮、雌二醇水平差异均无统计学意义。PROKR2基因突变与IHH疾病可能相关，其突变丰富基因致病谱。.