Molecular characterization of five Portuguese patients with pyrimidine 5’-nucleotidase deficient hemolytic anemia showing three new P5’N-I mutations

Abstract

Four different gene mutations were identified in five unrelated Portuguese patients with pyrimidine 5’-nucleotidase type I (P5’N-I) deficient chronic hemolytic anemia. Mutations 502G®C (168 Gly®Arg), 773T®C (258Ile®Thr) and the insertion of an Alu element in exon 9, leading to skipping of this exon in the mRNA transcript, are newly described mutations whereas mutation 425T®C (142Leu®Pro) has been previously reported.