Abstract
The present authors have studied the possible relationship between recurrent miscarriage and consanguinity in the Qatari population, where the prevalence of first cousin marriage is 47%. The maternal characteristics and obstetric outcome of 92 Qatari women in a consanguineous relationship and with an obstetrical history of three or more early pregnancy losses were compared with those of 92 non-consanguineous women from the same population and with the same obstetrical history, matched for maternal age. The retrospective investigation showed no difference in the rate of previous pregnancy loss and maternal disorders, including diabetes, thyroid dysfunction and immunity, abnormal uterine and ovarian anatomy or thrombophilia. There was also no evidence of familial clustering of recurrent miscarriage in both groups. The prospective study showed no difference in the rate of subsequent pregnancy loss and the median gestational age and fetal weight at delivery in ongoing pregnancies. The absence of a relationship between recurrent miscarriage and consanguinity in Qatar could be due to the particular characteristics of the native Qatari population, in which rare recessive genes are uncommon, or overall to the absence of an association between recurrent miscarriage and consanguinity.
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