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Case Reports
. 2000 Apr;15(4):384-5.
doi: 10.1002/(SICI)1098-1004(200004)15:4<384::AID-HUMU20>3.0.CO;2-J.

Partial deletion of the AGXT gene (EX1_EX7del): A new genotype in hyperoxaluria type 1

P K Nogueira  1 , T S Vuong, O Bouton, A Maillard, M Marchand, M O Rolland, P Cochat, D Bozon
Affiliations
Case Reports

Partial deletion of the AGXT gene (EX1_EX7del): A new genotype in hyperoxaluria type 1

P K Nogueira et al. Hum Mutat. 2000 Apr.

Abstract

Primary hyperoxaluria type 1 (PH1) is a rare autosomal (2q37.3) recessive metabolic disease caused by a deficiency of the hepatic peroxisomal enzyme alanine:glyoxylate amino transferase. Molecular heterogeneity is important in PH1 as most of the patients (if the parents are unrelated) are compound heterozygotes for rare mutations. We describe the first large deletion in the AGXT gene, removing exons 1 to 7 (EX1_EX7del) that was responsible for one case of severe PH1. This 10 kb deletion was identified by Southern blotting of genomic DNA digested by Xba I and hybridized with different exonic probes. Both parents (from Turkey) are first cousin and carry the deletion. It is of note that the presently reported patient did not exhibit any AGT catalytic activity and even so, he progressed towards end-stage renal disease only at 19 years old.

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