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Clin Genet. 1996 Mar;49(3):156-9.

Jumping translocation in a phenotypically normal female.

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  • 1Institut für Humangenetik, Medizinische Universität, Lübeck, Germany.


"Jumping translocation" jt refers to a rare type of chromosome mosaic, in which the same portion of a (donor) chromosome is translocated to different (recipient) chromosome sites. Jt have mainly been observed in lymphocyte cultures of patients with hematologic malignancies. We report a phenotypically normal female carrying a mosaic of two cell lines with the Xq26-qter segment translocated to the short arm of chromosomes 15 or 21 in peripheral blood lymphocytes. In skin fibroblasts, only the X/21 translocation was detected. We speculate that recombination between homologous repetitive sequences on non-homologous human acrocentrics may be the cause of such chromosomal rearrangements.

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