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  • Title: Limb reduction defects in fetuses with homozygous alpha-thalassaemia-1.
    Author: Lam YH, Tang MH, Sin SY, Ghosh A, Lee CP.
    Journal: Prenat Diagn; 1997 Dec; 17(12):1143-6. PubMed ID: 9467811.
    Abstract:
    Limb reduction defect is a rare event. Its exact pathogenesis is unknown. We retrospectively reviewed the outcome of 130 fetuses affected by homozygous alpha-thalassaemia-1 and found that 11 of them (8 per cent; 95 per cent confidence interval: 4-13 per cent) had terminal transverse limb reduction defects. Chromosome study was available in ten fetuses with limb defects and the results were normal. We postulate that the strong association between homozygous alpha-thalassaemia-1 and limb reduction is related to the hypoxic insult in early gestation. This may be the final common pathway in the pathogenesis of other forms of limb reduction defects.
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