Journal
BIOMOLECULES
Volume 13, Issue 7, Pages -Publisher
MDPI
DOI: 10.3390/biom13071020
Keywords
ADPKD; analysis of germline mutations; biomarkers; PKD1 mutation; predicting renal prognosis
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This study investigated the prognostic utility of genetic mutations in predicting renal function outcomes in Japanese patients with autosomal dominant polycystic kidney disease (ADPKD). The results showed that PKD1 mutation is a biomarker for predicting renal prognosis in ADPKD patients.
Background: Autosomal dominant polycystic kidney disease (ADPKD) occurs in 1 in 500-4000 people worldwide. Genetic mutation is a biomarker for predicting renal dysfunction in patients with ADPKD. In this study, we performed a genetic analysis of Japanese patients with ADPKD to investigate the prognostic utility of genetic mutations in predicting renal function outcomes. Methods: Patients clinically diagnosed with ADPKD underwent a panel genetic test for germline mutations in PKD1 and PKD2. This study was conducted with the approval of the Ethics Committee of Juntendo University (no. 2019107). Results: Of 436 patients, 366 (83.9%) had genetic mutations. Notably, patients with PKD1 mutation had a significantly decreased & UDelta;eGFR/year compared to patients with PKD2 mutation, indicating a progression of renal dysfunction (-3.50 vs. -2.04 mL/min/1.73 m(2)/year, p = 0.066). Furthermore, PKD1 truncated mutations had a significantly decreased & UDelta;eGFR/year compared to PKD1 non-truncated mutations in the population aged over 65 years (-6.56 vs. -2.16 mL/min/1.73 m(2)/year, p = 0.049). Multivariate analysis showed that PKD1 mutation was a more significant risk factor than PKD2 mutation (odds ratio, 1.81; 95% confidence interval, 1.11-3.16; p = 0.020). Conclusions: The analysis of germline mutations can predict renal prognosis in Japanese patients with ADPKD, and PKD1 mutation is a biomarker of ADPKD.
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