Novel mutation in a Chinese patient with progressive familial intrahepatic cholestasis type 3

来源 :World Journal of Gastroenterology | 被引量 : 0次 | 上传用户:s334794681
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Genotyping is conclusive for the diagnosis of progressive familial intrahepatic cholestasis type 3(PFIC3). Here we report a Chinese patient of PFIC3 with compound mutations in the ABCB4 gene. Liver biopsy was performed on a 17-year-old male patient with intrahepatic cholestasis of unknown etiology. Liver histology findings are indicative of intrahepatic cholestasis with extensive fibrosis. Genotyping revealed c.175C>T(p.L59L) mutation in exon 4, c.504C>T(p.N168N) mutation in exon 6, c.711A>T(p.I237I) mutation in exon 8, c.874A>T(p.K292X) in exon 9 and a novel mutation, c.1804G>T(p.G602W) in exon 15. Based on these findings, the patient was diagnosed with PFIC3. The novel mutation p.G602 W in exon 15 was predicted as probably damaging by Poly Phen-2 with a score of 0.986(sensitivity: 0.54; specificity: 0.94) and was predicted to affect protein function with a SIFT score of 0.01. Genotyping is conclusive for the diagnosis of progressive familial intrahepatic cholestasis type 3 (PFIC3). Here we report a Chinese patient of PFIC3 with compound mutations in the ABCB4 gene. Liver biopsy was performed on a 17-year-old male patient with intrahepatic cholestasis of Genotyping revealed c.175C> T (p.L59L) mutation in exon 4, c.504C> T (p.N168N) mutation in exon 6, c.711A > T (p.I237I) mutation in exon 8, c.874A> T (p.K292X) in exon 9 and a novel mutation, c.1804G> T (p.G602W) in exon 15. Based on these findings, the The novel mutation p.G602 W in exon 15 was predicted as probably damaging by Poly Phen-2 with a score of 0.986 (sensitivity: 0.54; specificity: 0.94) and was predicted to affect protein function with a SIFT score of 0.01.
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