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Tanaka Y, Horinouchi T, Inoki Y, Ichikawa Y, Ueda C, Kitakado H, Kondo A, Sakakibara N, Nagano C, Yano Y, Yoshikawa N, Morisada N, Nozu K. Nephronophthisis 13 caused by WDR19 variants with pancytopenia: case report. CEN Case Rep 2024:10.1007/s13730-024-00871-5. [PMID: 38589766 DOI: 10.1007/s13730-024-00871-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Accepted: 03/25/2024] [Indexed: 04/10/2024] Open
Abstract
We present a case of nephronophthisis 13 that resulted from WDR19 variants. The patient, a nine-year-old Japanese boy, had detection of mild proteinuria during a school urine screening. Urinalysis revealed mild proteinuria without hematuria. Blood tests indicated pancytopenia, mild elevation of liver enzymes, and kidney dysfunction. Ultrasound examination disclosed hepatosplenomegaly. Abdominal computed tomography and bone marrow assessments ruled out malignant tumors. Subsequent kidney and liver biopsies suggested nephronophthisis and congenital hepatic fibrosis. Furthermore, comprehensive genetic analysis through next-generation sequencing revealed compound heterozygous variants in WDR19 (NM_025132.4), including the previously reported c.3533G > A, p.(Arg1178Gln), and c.3703G > A, p.(Glu1235Lys) variants, confirming the diagnosis of nephronophthisis 13. There is potential need for liver and kidney transplantation in patients with nephronophthisis and hepatic fibrosis. Early diagnosis is therefore crucial to mitigate delays in treating complications associated with kidney and hepatic insufficiency and to facilitate preparation of transplantation. To achieve early diagnosis of nephronophthisis, it is imperative to consider it as a differential diagnosis when extrarenal symptoms and kidney dysfunction coexist, particularly when mild proteinuria is observed through opportunistic urinalysis. Genetic testing is important because nephronophthisis manifests as diverse symptoms, necessitating an accurate diagnosis. Next-generation sequencing was shown to be invaluable for the genetic diagnosis of nephronophthisis, given the numerous identified causative genes.
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Affiliation(s)
- Yu Tanaka
- Department of Pediatrics, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-Cho, Chuo-Ku, Kobe, Hyogo, 650-0017, Japan
| | - Tomoko Horinouchi
- Department of Pediatrics, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-Cho, Chuo-Ku, Kobe, Hyogo, 650-0017, Japan.
| | - Yuta Inoki
- Department of Pediatrics, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-Cho, Chuo-Ku, Kobe, Hyogo, 650-0017, Japan
| | - Yuta Ichikawa
- Department of Pediatrics, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-Cho, Chuo-Ku, Kobe, Hyogo, 650-0017, Japan
| | - Chika Ueda
- Department of Pediatrics, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-Cho, Chuo-Ku, Kobe, Hyogo, 650-0017, Japan
| | - Hideaki Kitakado
- Department of Pediatrics, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-Cho, Chuo-Ku, Kobe, Hyogo, 650-0017, Japan
| | - Atsushi Kondo
- Department of Pediatrics, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-Cho, Chuo-Ku, Kobe, Hyogo, 650-0017, Japan
| | - Nana Sakakibara
- Department of Pediatrics, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-Cho, Chuo-Ku, Kobe, Hyogo, 650-0017, Japan
| | - China Nagano
- Department of Pediatrics, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-Cho, Chuo-Ku, Kobe, Hyogo, 650-0017, Japan
| | - Yoshihiko Yano
- Division of Gastroenterology, Department of Internal Medicine, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-Cho, Chuo-Ku, Kobe, Hyogo, 650-0017, Japan
| | - Norishige Yoshikawa
- Takatsuki General Hospital, Clinical Research Center, 1‑3‑13 Kosobe‑cho, Takatsuki, 569‑1192, Japan
| | - Naoya Morisada
- Department of Pediatrics, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-Cho, Chuo-Ku, Kobe, Hyogo, 650-0017, Japan
- Department of Clinical Genetics, Hyogo Prefectural Kobe Children's Hospital, 1-6-7, Minatojimaminami-Machi, Chuo-Ku, Kobe, Hyogo, 650-0047, Japan
| | - Kandai Nozu
- Department of Pediatrics, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-Cho, Chuo-Ku, Kobe, Hyogo, 650-0017, Japan
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Congenital Hepatic Fibrosis in Children and Adults: Clinical Manifestations, Management, and Outcome-Case Series and Literature Review. Gastroenterol Res Pract 2020; 2020:8284274. [PMID: 32382272 PMCID: PMC7191434 DOI: 10.1155/2020/8284274] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Revised: 02/25/2020] [Accepted: 03/30/2020] [Indexed: 02/07/2023] Open
Abstract
Background Congenital hepatic fibrosis is a hereditary fibropolycystic disease caused by ductal plate malformation. It is characterized by portal hypertension, but the manifestations, management, and outcome vary in children and adults. To raise awareness of medical staff, we have comprehensively compared the clinical features of congenital hepatic fibrosis between children and adults. Methods We retrospectively enrolled all patients diagnosed with congenital hepatic fibrosis at the Huashan Hospital from August 2015 to August 2017 and analyzed their familial, clinical, laboratory, imaging, treatment, and follow-up data in detail. In addition, we reviewed cases with congenital hepatic fibrosis reported in the past 20 years in China and analyzed them according to the patients' age. Results A total of eight patients were diagnosed with congenital hepatic fibrosis in the study, including four children and four adults. The onset age of the children, who suffered from severe complications of portal hypertension and needed liver transplantation, ranged from 1 to 15 years old. The disorder developed in adults aged 26 to 60 years old. Three adults complained of recurrent abnormal liver function at the onset of illness, and they mainly received conservative treatments. The literature review included 30 children and 33 adults. In comparison, hepatomegaly was more common in children than in adults (57% vs. 21%, p = 0.004). Malformation of kidneys and bile duct abnormalities were common, and multisystem involvement included eyes, other digestive organs, and genital and central nervous systems. Conclusions Serious complications of portal hypertension developed in children requiring liver transplantation, while adults often had mild-to-moderate liver injuries upon onset. Adults with CHF varied a lot in clinical manifestations. Multiorgan involvement and unusual course are helpful to make a diagnosis. Timely histological assessment by liver biopsy and multidisciplinary cooperation are crucial for definitive diagnosis and early intervention.
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