A Case of Partial Trisomy 15q25.3-qter.
10.3343/kjlm.2009.29.1.66
- Author:
Ji Hae KIM
1
;
Won Mok LEE
;
Nam Hee RYOO
;
Jung Sook HA
;
Dong Seok JEON
;
Jae Ryong KIM
;
Joon Sik KIM
;
So Young LEE
Author Information
1. Department of Laboratory Medicine, Keimyung University School of Medicine, Daegu, Korea. ksksmom@dsmc.or.kr
- Publication Type:Case Report ; English Abstract
- Keywords:
15q25-qter trisomy;
Array comparative genomic hybridization (aCGH);
IGF1R gene
- MeSH:
Abnormalities, Multiple/genetics;
Child, Preschool;
*Chromosomes, Human, Pair 15;
Comparative Genomic Hybridization;
Female;
Humans;
In Situ Hybridization, Fluorescence;
Karyotyping;
Receptor, IGF Type 1/*genetics;
Translocation, Genetic;
*Trisomy
- From:The Korean Journal of Laboratory Medicine
2009;29(1):66-70
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
A 15q25-qter partial trisomy characterized by pre or postnatal overgrowth, tall stature, macrocephaly and craniosynostosis has rarely been reported. The cause of overgrowth has been thought to be the triplication of the insulin-like growth factor 1 receptor (IGF1R) gene located on the 15q26.3. We report a patient with partial trisomy 15q25.3-qter showing mental retardation, developmental delay, macrocephaly, long narrow face, ptosis, high palate arch, scoliosis, clinodactyly and overgrowth. Additional material located on terminal 2q was found in karyotyping analysis. In bacterial artificial chromosome (BAC) clone-based-array comparative genomic hybridization (aCGH) analysis, a gain of 31 clones on 15q25.3-qter and a loss of 2 clones on 2q37.3 were observed. An extra copy of IGF1R gene was observed on derivative chromosome 2 in FISH analysis. In conclusion, the patient was diagnosed to have de novo 46,XX,der(2)t(2;15)(q37.3;q25.3) chromosome complement. Adequate genetic counseling and regular follow-ups would be needed for the patient.
