Journal
BMC NEPHROLOGY
Volume 18, Issue -, Pages -Publisher
BMC
DOI: 10.1186/s12882-017-0612-8
Keywords
Primary hyperoxaluria type 1; Tunisian population; Urolithiasis; 33-34InsC mutation
Categories
Funding
- Ministry of Higher Education and Scientific Research, Molecular Biology Applied to Inherited Nephrodiseases, Cardiovascular Risk [LR12SP11]
- Tunisian Ministry of Health
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Background: Primary hyperoxaluria type 1 (PH1), is a rare and heterogeneous disease and one of major causes of renal insufficiency in Tunisia, caused by mutations in the AGXT gene. 33-34InsC mutation, was mainly described in children with a severe clinical feature leading to early death, but it was uncommonly reported in adult patients. Methods: Common mutations in AGXT were tested using PCR/RFLP technique in 111 patients (68 adult, 43 children) with suspected PH1. Results: We described 16 cases (eight adult and eight children) with a 33-34InsC mutation with a median age of 24 years [6 months - 73 years]. All children were in end stage renal disease (ESRD) at the median age of 3 years due to lithiasis and/or nephrocalcinosis. Unfortunately, 75% of them died with a median age of 2.5 years. For the majority of adults only spontaneous elimination of urolithiasis were noted, 37.5% preserved until now a normal renal function and 62.5% of them reached ESRD at the median age of 55.8 +/- 12.31 years old. Conclusion: In this study 33-34InsC mutation gives a controversial clinical effect in children and adults. The implication of other genetic and/or environmental factors can play a crucial role in determining the ultimate phenotype.
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