Iron status and HFE genotype in erythrocyte pyruvate kinase deficiency: Study of Italian cases

Alberto Zanella, Paola Bianchi, Alessandra Iurlo, Carla Boschetti, Emanuela Taioli, Cristina Vercellati, Manuela Zappa, Elisa Fermo, Dario Tavazzi, Maurizio Sampietro

Research output: Contribution to journalArticle

Abstract

We evaluated the iron status and searched for mutations C282Y and H63D in the hereditary hemochromatosis gene (HFE) in 34 pyruvate kinase (PK)-deficient patients from 29 unrelated families. Nine had received multiple transfusions. Thirteen of the 25 nontransfused patients displayed increased serum ferritin concentration, in the absence of conditions known to raise this parameter. HFE genotype was abnormal in 9 of 34 patients. The allele frequency was 1.8% for mutation 845G→ A (C282Y) and 16.1% for mutation 187C→ G (H63D). Nontransfused subjects with abnormal genotype had serum ferritin and transferrin saturation values significantly higher than those with wild-type genotype. Of the 12 adult nontransfused patients with increased iron status parameters, 1 was C282Y homozygous, 1 compound heterozygous for C282Y and H63D, 3 H63D heterozygous, and 7 had a normal HFE genotype. Serum ferritin and transferrin saturation were not related to hemoglobin, reticulocytes, and bilirubin concentration. At multivariate analysis serum ferritin was independently associated with age and gender, but not with splenectomy and HFE genotypes. The retrospective evaluation of the iron status profile of 10 patients (3 with abnormal and 7 with wild-type HFE genotype) with at least 10 years follow-up showed that overt iron accumulation requiring iron chelation had occurred only in the 3 patients (2 of whom were splenectomized) with the mutated HFE gene.

Original languageEnglish
Pages (from-to)653-661
Number of pages9
JournalBlood cells, molecules & diseases
Volume27
Issue number3
DOIs
Publication statusPublished - 2001

Fingerprint

Iron
Genotype
Ferritins
Transferrin
Serum
Mutation
Pyruvate Kinase
Hemochromatosis
Reticulocytes
Splenectomy
Bilirubin
Gene Frequency
Genes
Pyruvate Kinase Deficiency of Red Cells
Hemoglobins
Multivariate Analysis

Keywords

  • Hemolytic anemia
  • Hereditary hemocromatosis
  • HFE genotypes
  • Iron overload
  • Pyruvate kinase deficiency

ASJC Scopus subject areas

  • Molecular Biology
  • Molecular Medicine
  • Hematology

Cite this

Iron status and HFE genotype in erythrocyte pyruvate kinase deficiency : Study of Italian cases. / Zanella, Alberto; Bianchi, Paola; Iurlo, Alessandra; Boschetti, Carla; Taioli, Emanuela; Vercellati, Cristina; Zappa, Manuela; Fermo, Elisa; Tavazzi, Dario; Sampietro, Maurizio.

In: Blood cells, molecules & diseases, Vol. 27, No. 3, 2001, p. 653-661.

Research output: Contribution to journalArticle

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AU - Bianchi, Paola

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AU - Boschetti, Carla

AU - Taioli, Emanuela

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AB - We evaluated the iron status and searched for mutations C282Y and H63D in the hereditary hemochromatosis gene (HFE) in 34 pyruvate kinase (PK)-deficient patients from 29 unrelated families. Nine had received multiple transfusions. Thirteen of the 25 nontransfused patients displayed increased serum ferritin concentration, in the absence of conditions known to raise this parameter. HFE genotype was abnormal in 9 of 34 patients. The allele frequency was 1.8% for mutation 845G→ A (C282Y) and 16.1% for mutation 187C→ G (H63D). Nontransfused subjects with abnormal genotype had serum ferritin and transferrin saturation values significantly higher than those with wild-type genotype. Of the 12 adult nontransfused patients with increased iron status parameters, 1 was C282Y homozygous, 1 compound heterozygous for C282Y and H63D, 3 H63D heterozygous, and 7 had a normal HFE genotype. Serum ferritin and transferrin saturation were not related to hemoglobin, reticulocytes, and bilirubin concentration. At multivariate analysis serum ferritin was independently associated with age and gender, but not with splenectomy and HFE genotypes. The retrospective evaluation of the iron status profile of 10 patients (3 with abnormal and 7 with wild-type HFE genotype) with at least 10 years follow-up showed that overt iron accumulation requiring iron chelation had occurred only in the 3 patients (2 of whom were splenectomized) with the mutated HFE gene.

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