Homozygous p.Ser267Phe in SLC10A1 is associated with a new type of hypercholanemia and implications for personalized medicine

Homozygous p.Ser267Phe in SLC10A1 is associated with a new type of hypercholanemia and implications for personalized medicine

Abstract SLC10A1 codes for the sodium-taurocholate cotransporting polypeptide (NTCP), which is a hepatocellular transporter for bile acids (BAs) and the receptor for hepatitis B and D viruses. NTCP is also a target of multiple drugs. We aimed to evaluate the medical consequences of the loss of funct...

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Autores principales: Ruihong Liu, Chuming Chen, Xuefeng Xia, Qijun Liao, Qiong Wang, Paul J. Newcombe, Shuhua Xu, Minghui Chen, Yue Ding, Xiaoying Li, Zhihong Liao, Fucheng Li, Minlian Du, Huaiqiu Huang, Ruimin Dong, Weiping Deng, Ye Wang, Binghui Zeng, Qihao Pan, Danhua Jiang, Hao Zeng, Pak Sham, Yingnan Cao, Patrick H. Maxwell, Zhi-liang Gao, Liang Peng, Yiming Wang
Formato: article
Lenguaje:EN
Publicado: Nature Portfolio 2017
Materias:
Medicine
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Science
Q
Acceso en línea:https://doaj.org/article/2aa5ad318f384dea9833e704b8fbb7b6
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Sumario:Abstract SLC10A1 codes for the sodium-taurocholate cotransporting polypeptide (NTCP), which is a hepatocellular transporter for bile acids (BAs) and the receptor for hepatitis B and D viruses. NTCP is also a target of multiple drugs. We aimed to evaluate the medical consequences of the loss of function mutation p.Ser267Phe in SLC10A1. We identified eight individuals with homozygous p.Ser267Phe mutation in SLC10A1 and followed up for 8–90 months. We compared their total serum BAs and 6 species of BAs with 170 wild-type and 107 heterozygous healthy individuals. We performed in-depth medical examinations and exome sequencing in the homozygous individuals. All homozygous individuals had persistent hypercholanemia (P = 5.8 × 10–29). Exome sequencing excluded the involvement of other BA metabolism-associated genes in the hypercholanemia. Although asymptomatic, all individuals had low vitamin D levels. Of six adults that were subjected to bone mineral density analysis, three presented with osteoporosis/osteopenia. Sex hormones and blood lipids were deviated in all subjects. Homozygosity of p.Ser267Phe in SLC10A1 is associated with asymptomatic hypercholanemia. Individuals with homozygous p.Ser267Phe in SLC10A1 are prone to vitamin D deficiency, deviated sex hormones and blood lipids. Surveillance of these parameters may also be needed in patients treated with drugs targeting NTCP.

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