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Two balanced translocations in three generations of a pedigree: t(7;10) (q11;q22) and t(14;21) (14qter to cen to 21qter)1.
  1. H N Bass,
  2. R S Sparkes


    A reciprocal chromosome translocation between 7q and 10q and an unrelated Robertsonian translocation involving 14q and 21q were found in a healthy 44-year-old man, in his normal 18-year-old son, and in his mother. They were ascertained through the man's brother, whose grandson has Down's syndrome as a result of an inherited 14q21q translocation. To our knowledge, this is the second report of a karyotype with both reciprocal and Robertsonian translocations in a single subject, and only the fourth report of independently segregating double translocations occurring in more than one generation.

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