ORIGINAL ARTICLE

Mutations in the hereditary haemochromatosis gene HFE in professional endurance athletes

J L Chicharro¹, J Hoyos², F Gómez-Gallego³, J G Villa⁴, F Bandrés³, P Celaya⁵, F Jiménez⁶, J M Alonso⁷, A Córdova⁸, A Lucia⁹

¹ Departamento de Enfermería, Universidad Complutense, Madrid, Spain
² Asociación Deportiva Banesto, Madrid
³ Laboratorio de Biopatología, Departamento de Toxicología y Legislación Sanitaria, Universidad Complutense
⁴ INEF de Castilla y León, Universidad de León, León, Spain
⁵ Grupo Deportivo ONCE, Spain
⁶ Universidad de Castilla-La Mancha, Spain
⁷ Servicios Médicos RFEA, Madrid
⁸ Departamento de Fisiología, Universidad de Valladolid, Spain
⁹ Department of Physiology, Universidad Europea de Madrid, Madrid

Correspondence to:
Correspondence to:
Dr Lucia
Department of Physiology, Universidad Europea de Madrid, Madrid, Spain; alejandro.lucia{at}mrfs.cisa.uem.es

Background: Hereditary haemochromatosis, a disease that affects iron metabolism, progresses with a greater or lesser tendency to induce iron overload, possibly leading to severe organ dysfunction. Most elite endurance athletes take iron supplements during their active sporting life, which could aggravate this condition.

Objective: To determine the prevalence and discuss potential clinical implications of mutations of HFE (the gene responsible for hereditary haemochromatosis) in endurance athletes.

Methods: Basal concentrations of iron, ferritin, and transferrin and transferrin saturation were determined in the period before competition in 65 highly trained athletes. Possible mutations in the HFE gene were evaluated in each subject by extracting genomic DNA from peripheral blood. The restriction enzymes SnaBI and BclI were used to detect the mutations 845GA (C282Y) and 187CG (H63D).

Results: Our findings indicate a high prevalence of HFE gene mutations in this population (49.2%) compared with sedentary controls (33.5%). No association was detected in the athletes between mutations and blood iron markers.

Conclusions: The findings support the need to assess regularly iron stores in elite endurance athletes.

Keywords: iron; transferrin saturation; ferritin; gene mutation; endurance athletes

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