A genome-wide scan in affected sibling pairs with idiopathic recurrent miscarriage suggests genetic linkage

Astrid Marie Kolte, H S Nielsen, Ida Moltke, B Degn, Bjørn Pedersen, Lone E. M. Sunde, F C Nielsen, Ole Bjarne Christiansen

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    73 Citationer (Scopus)

    Abstract

    Previously, siblings of patients with idiopathic recurrent miscarriage (IRM) have been shown to have a higher risk of miscarriage. This study comprises two parts: (i) an epidemiological part, in which we introduce data on the frequency of miscarriage among 268 siblings of 244 patients with IRM and (ii) a genetic part presenting data from a genome-wide linkage study of 38 affected sibling pairs with IRM. All IRM patients (probands) had experienced three or more miscarriages and affected siblings two or more miscarriages. The sibling pairs were genotyped by the Affymetrix GeneChip 50K XbaI platform and non-parametric linkage analysis was performed via the software package Merlin. We find that siblings of IRM patients exhibit a higher frequency of miscarriage than population controls regardless of age at the time of pregnancy. We identify chromosomal regions with LOD scores between 2.5 and 3.0 in subgroups of affected sibling pairs. Maximum LOD scores were identified in four occurrences: for rs10514716 (3p14.2) when analyzing sister-pairs only; for rs10511668 (9p22.1) and rs341048 (11q13.4) when only analyzing families where the probands have had four or more miscarriages; and for rs10485275 (6q16.3) when analyzing one sibling pair from each family only. We identify no founder mutations. Concluding, our results imply that IRM patients and their siblings share factors which increase the risk of miscarriage. In this first genome-wide linkage study of affected sibling pairs with IRM, we identify regions on chromosomes 3, 6, 9 and 11 which warrant further investigation in order to elucidate their putative roles in the genesis of IRM.
    OriginalsprogEngelsk
    TidsskriftJournal of Reproductive Immunology
    Vol/bind90
    Nummer2
    Sider (fra-til)147
    Antal sider1
    ISSN0165-0378
    DOI
    StatusUdgivet - 2011
    Begivenhed9th Congress of the European Association of Reproductive Immunology - København, Danmark
    Varighed: 23 aug. 201127 aug. 2011

    Konference

    Konference9th Congress of the European Association of Reproductive Immunology
    Land/OmrådeDanmark
    ByKøbenhavn
    Periode23/08/201127/08/2011

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