Reproductive risk in mating between two translocation carriers: Case report and review of the literature

K. Tsuji, K. Narahara, Y. Yokoyama, S. Ninomiya, S. Yonesawa, Y. Hiramatsu, H. Masaoka, N. Kudo, Y. Seino

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Abstract

We conducted a study to determine the reproductive risk in a couple who were translocation carriers. This couple, who carried balanced reciprocal translocations, experienced habitual abortions. The wife had a karyotype of 46,XX,t(7;13)(p15.3;q12.3) and the husband of 46,XY,t(1;7)(p11.1;p11.1). Chromosome study of their fourth abortus demonstrated a chimera consisting of two cell lines with a 46,XY and a 46,XX,t(1;7)(p11.1;p11.1)pat, -13, + der(7)t(7;13)(p15.3;q12.3)mat, karyotype. A review of the literature indicates that the risk of having unbalanced live offspring or of spontaneous abortion/stillborns is similar in couples in whom both were translocation carriers and in couples in whom one individual was a translocation carrier. The apparent lack of increased reproductive failure may result from the selective disadvantage of aneusomic gametes at fertilization or very early spontaneous abortions of unbalanced conceptuses.

Original languageEnglish
Pages (from-to)524-528
Number of pages5
JournalAmerican Journal of Medical Genetics
Volume46
Issue number5
DOIs
Publication statusPublished - Jan 1 1993

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Keywords

  • adjacent-2 segregation
  • alternative segregation
  • habitual abortion
  • mating between translocation carriers
  • reproductive failure

ASJC Scopus subject areas

  • Genetics
  • Genetics(clinical)

Cite this

Tsuji, K., Narahara, K., Yokoyama, Y., Ninomiya, S., Yonesawa, S., Hiramatsu, Y., Masaoka, H., Kudo, N., & Seino, Y. (1993). Reproductive risk in mating between two translocation carriers: Case report and review of the literature. American Journal of Medical Genetics, 46(5), 524-528. https://doi.org/10.1002/ajmg.1320460513