A patient with partial trisomy 9 (47,XX,+9pter----q22.1) had bilateral cleft lip and cleft palate, enophthalmos, severe micrognathia, small, apparently low-set ears, and dislocatable knees. The phenotypic findings are compared with those of other documented cases of total trisomy 9.
Partial and complete trisomy 9: Delineation of a trisomy 9 syndrome
β Scribed by Grant R. Sutherland; Rodney F. Carter; Lloyd L. Morris
- Publisher
- Springer
- Year
- 1976
- Tongue
- English
- Weight
- 940 KB
- Volume
- 32
- Category
- Article
- ISSN
- 0340-6717
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β¦ Synopsis
Two infants with trisomy involving chromosome 9 are described. One had complete trisomy 9 and the other karyotype 47,XX,+der(9),t(7;9) (p22;q32)mat. A trisomy 9 syndrome is delineated, consisting of features of the trisomy 9p syndrome and various other malformations. These include abnormalities of the cardiovascular and urogenital systems, cranial suture anomalies, dislocation of the hips and knees and early death. A possible relationship of some of these findings to regions of 9q involved in cases of partial trisomy 9 is suggested.
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.
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 low-birth-weight near-term male infant was found to have a non-familial 47,XΒ₯ chromosome complement with an extra medimn-sized metacentrie chromosome slightly larger than a number 16. By Giemsa-trypsin (G-banding) this extra chromosome was determined to be a number 9 with deletion of approximately