A dysmorphic female born with partial trisomy of the proximal segment of the long arm of chromosome 14 had 47 chromosomes. The extra one was acrocentric, smaller than the D group, and bigger than the G-chromosome group. By GTG banding it was identified as a deleted chromosome 14, the karyotype being
The syndrome of partial trisomy 14q
β Scribed by F. Lo Curto; Paola Maraschio; P. Milanesi; Francesca Severi; A. C. Ugazio; Orsetta Zuffardi
- Publisher
- Springer
- Year
- 1976
- Tongue
- English
- Weight
- 616 KB
- Volume
- 123
- Category
- Article
- ISSN
- 0340-6997
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β¦ Synopsis
The case of a 4-month-old male with a de novo partial trisomy for chromosome 14 involving the pl3-+q24 portion is reported. He presented with growth and psychomotor retardation, peculiar facies due to nose-mouth anomalies, monolateral mierophtalmia, high arched palate, and anomalies of hands and feet. These symptoms are found also in the other 8 cases of partial trisomy 14 reported in the literature. This confirms a characteristic chromosomal syndrome although the breaking points on the extra chromosome 14 are not the same in the 9 cases. The clinical picture of our ease calls for careful investigations of the chronology of bone age and of the immunologic situation in further cases of total and partial trisomy 14.
π SIMILAR VOLUMES
The clinical features consisting mainly of enophthalmos, beaked nose, narrow palpebral fissures, receding chin, long fingers and toes, typical for chromsomal syndrome or partial trisomy 9q, were confirmed in a new case.
The case of a male infant with duplication of the distal segment of chromosome 14q is described. There was an extra chromosomal segment at the distal end of the long arm of chromosome 17. Banding techniques suggested that the extra segment might be the distal segment of chromosome 14q. DNA analysis
Two unrelated patients with a strikingly similar phenotype (low birth weight and poor thriving; mental retardation; dolichocephaly; beaked nose; deeply set eyes; prominent maxilla and receding small chin; long fingers with a peculiar clench) were partially trisomic for two different segments of 9q.
A male infant with partial trisomy 1q syndrome (46,XY,der(21),t(1;21)(q25;q22)pat) is described. Clinical findings include small for gestational age, hypoglycemia, ocular hypertelorism, microphthalmia, coloboma of the iris, low-set ears, beak nose, micrognathia, micropenis, cryptorchidism, presacral