Genomewide linkage analysis of soluble transferrin receptor plasma levels

Angel F. Remacha, Joan C. Souto, José Manuel Soria, Alfonso Buil, M. Pilar Sardà, Mark Lathrop, John Blangero, Laura Almasy, Jordi Fontcuberta

    Research output: Contribution to journalArticlepeer-review

    6 Scopus citations

    Abstract

    Genetic control of soluble transferrin receptor (sTfR) levels was demonstrated using family-based studies (GAIT, Genetic Analysis of Idiopathic Thrombophilia project); moreover, a genetic relationship was observed between sTfR and the risk for thrombosis, suggesting that these phenotypes shared genetic determinants. We studied the regions that control sTfR. To assess such regions, a full genome scan was carried out using 604 highly polymorphic deoxyribonucleic acid markers (resolution 7.3 cM) in 21 extended pedigrees (358 individuals). Then, a quantitative trait linkage analysis was performed using variance components methods. The genomewide scan linkage analysis showed two regions (quantitative trait locus or QTL) with significant limit of detection (LOD) scores (2q23.14, LOD score=2.64, nominal p=0.00024; 3q21.2, LOD score=1.94, nominal p=0.0014). There were no obvious candidate genes in these regions. In conclusion, this linkage analysis suggested the existence of a QTL in 2q23.14 that probably harbored a gene (or genes) controlling sTfR levels. Moreover, a second linkage signal was observed in 3q21.2; albeit the evidence for this second locus was lower. The next step will be to identify the gene(s) and its possible involvement in thrombosis and iron homeostasis.

    Original languageEnglish (US)
    Pages (from-to)25-28
    Number of pages4
    JournalAnnals of Hematology
    Volume85
    Issue number1
    DOIs
    StatePublished - Jan 1 2006

    Keywords

    • Family studies
    • Heritability
    • Iron metabolism
    • Linkage study
    • Thrombosis
    • Transferrin receptor

    ASJC Scopus subject areas

    • Hematology

    Fingerprint Dive into the research topics of 'Genomewide linkage analysis of soluble transferrin receptor plasma levels'. Together they form a unique fingerprint.

    Cite this