Array-Based Comparative Genomic Hybridization in 190 Korean Patients with Developmental Delay and/or Intellectual Disability: A Single Tertiary Care University Center Study
Yonsei Medical Journal
;
: 1463-1470, 2013.
Article
in English
| WPRIM
| ID: wpr-100952
ABSTRACT
PURPOSE:
This study analyzed and evaluated the demographic, clinical, and cytogenetic data [G-banded karyotyping and array-based comparative genomic hybridization (array CGH)] of patients with unexplained developmental delay or intellectual disability at a single Korean institution. MATERIALS ANDMETHODS:
We collected clinical and cytogenetic data based on retrospective charts at Ajou University Medical Center, Suwon, Korea from April 2008 to March 2012.RESULTS:
A total of 190 patients were identified. Mean age was 5.1+/-1.87 years. Array CGH yielded abnormal results in 26 of 190 patients (13.7%). Copy number losses were about two-fold more frequent than gains. A total of 61.5% of all patients had copy number losses. The most common deletion disorders included 22q11.2 deletion syndrome, 15q11.2q12 deletion and 18q deletion syndrome. Copy number gains were identified in 34.6% of patients, and common diseases among these included Potocki-Lupski syndrome, 15q11-13 duplication syndrome and duplication 22q. Abnormal karyotype with normal array CGH results was exhibited in 2.6% of patients; theses included balanced translocation (n=2), inversion (n=2) and low-level mosaicism (n=1). Facial abnormalities (p<0.001) and failure to thrive were (p<0.001) also more frequent in the group of patients with abnormal CGH findings.CONCLUSION:
Array CGH is a useful diagnostic tool in clinical settings in patients with developmental delay or intellectual disability combined with facial abnormalities or failure to thrive.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Tertiary Healthcare
/
Retrospective Studies
/
Gene Dosage
/
Comparative Genomic Hybridization
/
Republic of Korea
/
Karyotype
/
Intellectual Disability
Type of study:
Observational study
Limits:
Adolescent
/
Adult
/
Child
/
Child, preschool
/
Female
/
Humans
/
Infant
/
Male
Country/Region as subject:
Asia
Language:
English
Journal:
Yonsei Medical Journal
Year:
2013
Type:
Article
Similar
MEDLINE
...
LILACS
LIS