The propositus and a subsequently born sister presented with multiple congenital anomalies. Chromosome analyses were performed initially on peripheral blood lymphocytes from the propositus and his parents: the propositus was found to have a deletion of chromosome 14 (q32.11- greater than qter); the parents' chromosomes were normal. When the sister of the propositus was born, she was determined to have a duplication of an equivalent segment of 14qter. Chromosome studies on the parents' fibroblasts demonstrated no structural abnormality or mosaicism. The parents have an older, phenotypically normal, healthy daughter, which supports mosaicism for intragonadal t(14;14)(q32.11;q32.33) in one parent. Chromosome polymorphism comparisons show that the normal number 14 chromosome in the propositus and his sister was inherited from the mother, thus indicating paternal testicular mosaicism. Clinical findings are compared to those of other reported cases of deletion 14q and duplication 14q.

A male propositus and an older sister had a similar pattern of congenital anomalies, including facial asymmetry with hypertelorism, frontal bossing and temporal narrowness, a broad nasal bridge, epicanthal folds, a wide mouth with a thin upper lip, micrognathia, webbed neck, low-set posteriorly angulated ears, and an abnormal hairline. There was also postaxial polydactyly, flexion contractures of the digits, hypotonia, and a congenital heart anomaly. The propositus also had renal anomalies whereas the sister did not, and the sister had a cleft lip and palate not present in her brother. The propositus and a subsequent fetus identified through genetic amniocentesis were determined to have a 46, XY, -18, +der(18),t(17;18)(q25.1;q23)mat chromosome constitution. Clinical findings are compared to those of other reported cases of dup(17q).

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