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Boehm, C.D. et al.

Prenatal diagnosis using DNA polymorphisms. Report on 95 pregnancies at risk for sickle-cell disease or beta-thalassemia.

DNA polymorphisms are normal inherited variations in DNA that can often be used to document the inheritance of genes that produce disease. In this report we summarize our experience with prenatal diagnosis in 95 pregnancies in which the fetus was at risk for a hemoglobinopathy; the diagnosis was performed with use of DNA polymorphisms located so near the beta-globin gene that they are inherited along with that gene. Of the 95 pregnancies, 57 involved fetuses at risk for sickle-cell anemia, 32 fetuses at risk for beta-thalassemia, and 6 fetuses at risk for other beta-chain hemoglobinopathies. Diagnosis was achieved solely by analysis of DNA polymorphisms in cells recovered by amniocentesis in 82 cases (86 per cent) and was completed by fetoscopy and fetal-blood study in an additional 6 cases (6 per cent). Prenatal diagnosis was proved correct in all 78 cases that have been available for confirmation to date. Our experience demonstrates that DNA polymorphisms can be useful for the prenatal diagnosis of genetic diseases in which the basic defect cannot be directly detected.[1]

References

Prenatal diagnosis using DNA polymorphisms. Report on 95 pregnancies at risk for sickle-cell disease or beta-thalassemia. Boehm, C.D., Antonarakis, S.E., Phillips, J.A., Stetten, G., Kazazian, H.H. N. Engl. J. Med. (1983) [Pubmed]

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