Application of array-based comparative genome hybridization in children with developmental delay or mental...

Area of Science:

• Genetics
• Pediatric Neurology
• Medical Diagnostics

Background:

• Developmental delay or mental retardation (DD/MR) presents diagnostic challenges in child neurology.
• Chromosomal imbalances are a significant, yet often undetected, cause of DD/MR.
• Submicroscopic chromosomal abnormalities require advanced detection methods beyond conventional cytogenetics.

Purpose of the Study:

• To review the utility of array comparative genomic hybridization (array CGH) in diagnosing idiopathic DD/MR.
• To highlight array CGH's superiority over traditional methods for detecting submicroscopic chromosomal aberrations.

Main Methods:

• Review of recent studies investigating array CGH in pediatric patients with idiopathic DD/MR.
• Focus on array CGH's capability to identify deletions and duplications.

Main Results:

• Array CGH demonstrates superior performance in detecting submicroscopic chromosomal imbalances.
• This technique improves the diagnostic detection rate for small chromosomal abnormalities in children with DD/MR.

Conclusions:

• Array CGH is a valuable tool for etiological diagnosis in children with idiopathic DD/MR.
• It offers enhanced diagnostic accuracy for submicroscopic chromosomal abnormalities, aiding child neurologists.