Familial t(11;13)(q21;q14) and the duplication 11q, 13q phenotype.

Cases of duplication of distal 11q or proximal 13q have been reported independently. A specific translocation resulting in duplication of distal 11q, [der(22)t(11;22)(q23;q11)], has been documented in over 40 cases. We report on a male fetus with chromosomal excess of both distal 11q and proximal 13q resulting from a familial translocation.

Familial translocation 5;14 resulting in an unbalanced offspring.

We report on an infant with multiple congenital anomalies possessing a derivative 14 chromosome in excess of the normal complement, resulting from transmission of a familial t(5;14)(p13;q22). The proposita's phenotypically normal mother, mentally retarded half-brother, and fetal sib are carriers of the apparently balanced translocation. Previous cases of similar familial t(5;14) are reviewed.

Trisomy 18 and 18p- features in a case of isochromosome 18q [46,XY,i(18q)]: prenatal diagnosis and autopsy report.

This paper reports the prenatal diagnosis and autopsy findings of a case of true isochromosome 18q [46,XY,i(18q)] with severe cephalic malformations. Comparison is made with other cases of i(18q).