ATP结合盒亚家族B成员4(ABCB4)基因突变相关性肝硬化合并胆囊结石1例报告
DOI: 10.12449/JCH240324
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摘要: ATP结合盒亚家族B成员4(ABCB4)基因突变疾病谱涉及进行性家族性肝内胆汁淤积3型、胆石症、妊娠期肝内胆汁淤积症、门静脉高压、肝硬化,甚至原发性肝脏、胆道恶性肿瘤等多种疾病。本院肝胆内科收治1例青年男性患者,入院初步诊断为胆囊结石,计划腹腔镜胆囊切除术,术前检查发现该患者肝功能异常、肝硬化、脾大、食管静脉轻度曲张,后进一步行二代测序明确诊断为ABCB4基因突变相关性肝硬化合并胆囊结石,给予熊去氧胆酸胶囊利胆治疗后,肝功能逐渐恢复正常。
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关键词:
- ABCB4基因 /
- 突变 /
- 多药耐药相关蛋白质类 /
- 肝硬化 /
- 胆石
Abstract: The disease spectrum of ABCB4 gene mutation involves various diseases such as progressive familial intrahepatic cholestasis type 3 (PFIC3), gallstone disease, intrahepatic cholestasis of pregnancy, portal hypertension, liver cirrhosis, and even primary hepatic and biliary malignancies. A young male patient was admitted to Department of Hepatobiliary Medicine, Eastern Hepatobiliary Surgery Hospital, and was initially diagnosed with liver cirrhosis and gallstones, and he was planned to receive laparoscopic cholecystectomy. Preoperative examination showed abnormal liver function, liver cirrhosis, splenomegaly, and mild esophageal varices, and next-generation sequencing was performed to make a confirmed diagnosis of ABCB4 gene mutation-associated liver cirrhosis with gallstones. The liver function of the patient gradually returned to normal after cholagogic treatment with ursodeoxycholic acid capsules.-
Key words:
- ABCB4 Gene /
- Mutation /
- Multidrug Resistance-Associated Proteins /
- Liver Cirrhosis /
- Gallstones
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图 2 患者及其父母等全外显子基因测序结果
注: 患者ABCB4基因发现2个杂合变异,一处为NM_000443.3:c.602C>T(p.Thr201Met),即编码区第602位碱基由C突变为 T,突变导致编码蛋白的第201位氨基酸由苏氨酸突变成甲硫氨酸,此处突变来源于患者的父亲;另一处为NM_000443.3:c.3121T>C(p.Phe1041Leu),即编码区第3121位碱基由T突变为C,突变导致编码蛋白的第1041位氨基酸由苯丙氨酸突变成亮氨酸,此处突变来源于患者的母亲。患者的姐姐亦检测到来源于父亲的突变:NM_000443.3:c.602C>T(p.Thr201Met)。
Figure 2. Sequence diagram of the whole Exon gene of the patient and his parents
表 1 患者基因突变信息及可能出现的临床疾病表型
Table 1. Genetic mutation information of patients and possible clinical disease phenotypes
基因 染色体 核苷酸/氨基酸变化 基因亚区 合子状态 疾病/表型 遗传方式 ABCB4 (NM_000443.3) Chr7:87081045 c.602C>T p.Thr201Met Exon7 杂合 ICP3 PFIC3 LPAC AR、AD AR AR、AD Chr7:87037511 c.3121T>C p.Phe1041Leu Exon25 杂合 注:AR,常染色体阴性;AD,常染色体显性。 -
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