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An Evaluation of Cytogenetic Analysis as a Primary Tool in the Assessment of Recurrent Pregnancy Wastage

From the Jerrold R. Golding Division of Fetal Medicine, Department of Obstetrics and Gynecology, and the Department of Human Genetics at the University of Pennsylvania, Philadelphia, Pennsylvania

Abstract

Cytogenetic evaluation of couples with recurrent pregnancy wastage is frequently performed only after other possible etiologic factors have been excluded. Previous reports of studies using conventional and G-banding chromosome techniques in these couples have shown a higher frequency of translocations than that found in the general population. In the study reported here, both conventional and G-banded chromosome analyses were performed as a primary method of evaluation in 34 couples with recurrent fetal loss not ascertained by the birth of a child with a diagnosed chromosome disorder. Balanced translocations were found in 5 partners of the 34 couples studied. In only 2 of these cases was the translocation detected by conventional chromosome analysis. These results suggest that G-banded chromosome analysis should be a useful tool in the initial evaluation of couples with recurrent fetal wastage, rather than being recommended only after extensive investigation of other factors is unrewarding. The reproductive counseling of couples with a translocation detected on this basis is discussed.