Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2019 Sep;23(9):1119-1129.
doi: 10.1007/s10157-019-01747-0. Epub 2019 May 27.

Clinical characteristics of HNF1B-related disorders in a Japanese population

Affiliations

Clinical characteristics of HNF1B-related disorders in a Japanese population

China Nagano et al. Clin Exp Nephrol. 2019 Sep.

Abstract

Background: Hepatocyte nuclear factor 1β (HNF1B), located on chromosome 17q12, causes renal cysts and diabetes syndrome (RCAD). Moreover, various phenotypes related to congenital anomalies of the kidney and urinary tract (CAKUT) or Bartter-like electrolyte abnormalities can be caused by HNF1B variants. In addition, 17q12 deletion syndrome presents with multi-system disorders, as well as RCAD. As HNF1B mutations are associated with different phenotypes and genotype-phenotype relationships remain unclear, here, we extensively studied these mutations in Japan.

Methods: We performed genetic screening of RCAD, CAKUT, and Bartter-like syndrome cases. Heterozygous variants or whole-gene deletions in HNF1B were detected in 33 cases (19 and 14, respectively). All deletion cases were diagnosed as 17q12 deletion syndrome, confirmed by multiplex ligation probe amplification and/or array comparative genomic hybridization. A retrospective review of clinical data was also conducted.

Results: Most cases had morphological abnormalities in the renal-urinary tract system. Diabetes developed in 12 cases (38.7%). Hyperuricemia and hypomagnesemia were associated with six (19.3%) and 13 cases (41.9%), respectively. Pancreatic malformations were detected in seven cases (22.6%). Ten patients (32.3%) had liver abnormalities. Estimated glomerular filtration rates were significantly lower in the patients with heterozygous variants compared to those in patients harboring the deletion (median 37.6 vs 58.8 ml/min/1.73 m2; p = 0.0091).

Conclusion: We present the clinical characteristics of HNF1B-related disorders. To predict renal prognosis and complications, accurate genetic diagnosis is important. Genetic testing for HNF1B mutations should be considered for patients with renal malformations, especially when associated with other organ involvement.

Keywords: Diabetes; Gout; HNF1B; Hypomagnesaemia; Liver abnormality; Renal malformations.

PubMed Disclaimer

Similar articles

Cited by

References

    1. J Mol Endocrinol. 2001 Aug;27(1):11-29 - PubMed
    1. J Am Soc Nephrol. 2003 Aug;14(8):2033-41 - PubMed
    1. EMBO J. 2004 Apr 7;23(7):1657-68 - PubMed
    1. Ann Intern Med. 2004 Apr 6;140(7):510-7 - PubMed
    1. J Med Genet. 2006 Jan;43(1):84-90 - PubMed

MeSH terms

Substances

Supplementary concepts

LinkOut - more resources