[A case of partial trisomy 15q25.3-qter].
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.
Kim
Ji-Hae
JH
Department of Laboratory Medicine, Keimyung University School of Medicine, Daegu, Korea.
Lee
Won-Mok
WM
Ryoo
Nam-Hee
NH
Ha
Jung-Sook
JS
Jeon
Dong-Seok
DS
Kim
Jae-Ryong
JR
Kim
Joon-Sik
JS
Lee
So-Young
SY
D000015:Abnormalities, Multiple / Q000235:genetics; D002675:Child, Preschool; D002884:Chromosomes, Human, Pair 15; D055028:Comparative Genomic Hybridization; D005260:Female; D006801:Humans; D017404:In Situ Hybridization, Fluorescence; D007621:Karyotyping; D017526:Receptor, IGF Type 1 / Q000235:genetics*; D014178:Translocation, Genetic; D014314:Trisomy
D017526:Receptor, IGF Type 1