ArticlePediatric nephrology (Berlin, Germany)2025
Primary hyperoxaluria type 3: from infancy to adulthood in a genetically unique cohort.
Article in Pediatric nephrology (Berlin, Germany), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Identification of Primary Hyperoxaluria Type III by Gas Chromatography/Mass Spectrometry-Based Urine Metabolomics.Metabolites · 2026Article
- Differential clinical characteristics of Chinese children with primary hyperoxaluria type 3.Pediatric nephrology (Berlin, Germany) · 2026Article
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7 authors.
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Abstract
backgroundPrimary hyperoxaluria type 3 (PH3) is a rare autosomal recessive disorder caused by bi-allelic genetic variants in the 4 hydroxy-2 oxoglutarate aldolase (HOGA-1) gene. We report the natural history of PH3 in a 16-patient cohort, 15 from a unique genetically isolated population.
methodsThis retrospective single-center study followed PH3 patients between 2003 and 2023 with demographic, clinical, radiographic, genetic, and biochemical parameters. Genetic population screening was performed in four villages to determine carrier frequency and identify couples at risk in a genetically isolated population.
resultsSixteen patients with biallelic (or homozygous) pathogenic variants (PV) in HOGA-1 (c.944_946 del, c.119C > A, c.208C > T) were included in the study, 15 Druze and one Jewish, aged 0-63 years at diagnosis (4 adults and 12 pediatric patients). All symptomatic patients had clinical or imaging signs of nephrolithiasis. One developed chronic kidney disease (CKD) stage 5; biopsy showed focal mesangial sclerosis and chronic tubulo-interstitial changes with few oxalate deposits. Two other patients had CKD stage 2 (eGFR 87 and 74 mL/min/1.73 m
conclusionsA high prevalence of PH3 patients was found among a unique cohort, but probably still underdiagnosed due to relatively mild disease course. The carrier rate is high. There is no specific therapy for PH3, but early diagnosis can prevent redundant diagnostic efforts and provide early treatment for kidney stone disease. Even in our homogeneous cohort, kidney stone disease severity and CKD degree were variable, supporting a suspected contribution of yet unknown genetic or environmental factors.
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