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Masui D, Fukahori S, Mizuochi T, Watanabe Y, Fukui K, Ishii S, Saikusa N, Hashizume N, Higashidate N, Sakamoto S, Takato A, Yoshiura KI, Tanaka Y, Yagi M. Cystic biliary atresia with paucity of bile ducts and gene mutation in KDM6A: a case report. Surg Case Rep 2019; 5:132. [PMID: 31414320 PMCID: PMC6694366 DOI: 10.1186/s40792-019-0688-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2019] [Accepted: 08/02/2019] [Indexed: 12/28/2022] Open
Abstract
Background Biliary atresia (BA) cases are generally not associated with congenital abnormalities. However, accurate diagnosis of BA is often challenging because the histopathological features of BA overlap with those of other pediatric liver diseases and rarely overlap with those of other genetic disorders. We experienced a rare case of BA with the histopathological finding of bile duct paucity, a gene mutation in KDM6A, and KS-like phenotypes. Case presentation A male baby was diagnosed with biliary atresia by intraoperative cholangiography at 4 days of age, and histological examination following a liver biopsy revealed a paucity of bile ducts and several typical clinical findings of Alagille syndrome. However, Alagille syndrome was ruled out after neither JAG1 nor NOTCH2 gene mutations were identified. Whole-exome sequencing on DNA from his parents was additionally performed to examine other possible syndromic disorders, and a mutation was identified in KDM6A. However, Kabuki syndrome was not diagnosed as a result. The histological finding of interlobular bile duct paucity and the genetic mutation in KDM6A, as well as several clinical findings consistent with Alagille syndrome or Kabuki syndrome, made it difficult to confirm the diagnosis of BA. Conclusions Based on the interesting findings of the present case, we hypothesized that KDM6A is associated with hepatic malformations via a connection with the Notch signaling pathway.
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Affiliation(s)
- Daisuke Masui
- Department of Pediatric Surgery, Kurume University School of Medicine, 67 Asahi-machi, Kurume, 830-0011, Japan.
| | - Suguru Fukahori
- Department of Pediatric Surgery, Kurume University School of Medicine, 67 Asahi-machi, Kurume, 830-0011, Japan
| | - Tatsuki Mizuochi
- Department of Pediatrics and Child Health, Kurume University School of Medicine, Kurume, Japan
| | - Yoriko Watanabe
- Department of Pediatrics and Child Health, Kurume University School of Medicine, Kurume, Japan.,Research Institute of Medical Mass Spectrometry, Kurume University School of Medicine, Kurume, Japan
| | - Kaori Fukui
- Department of Pediatrics and Child Health, Kurume University School of Medicine, Kurume, Japan
| | - Shinji Ishii
- Department of Pediatric Surgery, Kurume University School of Medicine, 67 Asahi-machi, Kurume, 830-0011, Japan
| | - Nobuyuki Saikusa
- Department of Pediatric Surgery, Kurume University School of Medicine, 67 Asahi-machi, Kurume, 830-0011, Japan
| | - Naoki Hashizume
- Department of Pediatric Surgery, Kurume University School of Medicine, 67 Asahi-machi, Kurume, 830-0011, Japan
| | - Naruki Higashidate
- Department of Pediatric Surgery, Kurume University School of Medicine, 67 Asahi-machi, Kurume, 830-0011, Japan
| | - Saki Sakamoto
- Department of Pediatric Surgery, Kurume University School of Medicine, 67 Asahi-machi, Kurume, 830-0011, Japan
| | - Aiko Takato
- Department of Pediatric Surgery, Kurume University School of Medicine, 67 Asahi-machi, Kurume, 830-0011, Japan
| | - Koh-Ichiro Yoshiura
- Department of Human Genetics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Yoshiaki Tanaka
- Department of Pediatric Surgery, Kurume University School of Medicine, 67 Asahi-machi, Kurume, 830-0011, Japan.,Division of Medical Safety Management, Kurume University School of Medicine, Kurume, Japan
| | - Minoru Yagi
- Department of Pediatric Surgery, Kurume University School of Medicine, 67 Asahi-machi, Kurume, 830-0011, Japan
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