A complex balanced chromosomal rearrangement in repeated abortions.

A double balanced reciprocal translocation involving four chromosomes, t(1;19;6;14) (1p11; 19p11; 6q25; 14q21), was found in the phenotypically normal husband in a couple referred because of repeated abortions. Reciprocal translocations, t(6;14), had been transmitted by his mother, his father being apparently homozygous for a translocation comprising pairs 1 and 19--t(1;19)(1;19). The genetic consequences of this complex chromosomal rearrangement are analyzed.