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Gayatry Mohapatra¹, Julia Sharma, Stephen Yip

¹Department of Medicine, Massachusetts General Hospital, Boston, MA, USA.

Methods in Molecular Biology (Clifton, N.J.)

|February 16, 2013

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Copy number alterations (CNAs) are common in brain tumors like gliomas. Array comparative genomic hybridization (aCGH) effectively profiles these genomic changes, with new technologies enhancing CNA assessment.

Area of Science:

Genomics
Oncology
Neuroscience

Background:

Copy number alterations (CNAs) are prevalent in brain tumors, particularly gliomas.
Specific examples include EGFR amplification (7p) and PTEN loss (10q) in glioblastoma, and NF2 loss (22q) in meningiomas.

Purpose of the Study:

To highlight the utility of array comparative genomic hybridization (aCGH) for profiling genome-wide CNAs in brain tumors.
To discuss advancements in aCGH robustness for formalin-fixed paraffin-embedded (FFPE) tissues.
To introduce emerging technologies for CNA assessment.

Main Methods:

Array comparative genomic hybridization (aCGH) is presented as a reliable, consistent, and economical method for genome-wide CNA profiling.
Technical advancements enabling aCGH on FFPE DNA are noted.

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Emerging technologies like next-generation sequencing and NanoString are mentioned for future CNA assessment.

Main Results:

aCGH enables systematic assessment of recurrent genomic CNAs in brain tumors.
The technique's adaptability to FFPE tissues expands its application.
Novel technologies promise to broaden the scope of CNA analysis.

Conclusions:

aCGH is a valuable tool for characterizing genomic copy number alterations in brain tumors.
Ongoing technological advancements are improving and expanding the methods available for CNA analysis in neuro-oncology.