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New method provides fast, accurate, low cost analysis of BRCA gene mutations in breast cancer
Date:8/5/2012

identifying one genetic variant that was missed due to human error, the new method successfully identified all of the expected BRCA1/2 variants. They identified both exonic and exon/intron boundary variants. The test was done at a very low cost, and with a turnaround time of 12 days. "One of the key advantages of workflow of long-range PCR is the ability to visually detect large genomic duplications, deletions, and insertions," notes Dr. Ozcelik. "When combined with next generation sequencing, long range PCR can be a powerful tool in the detection of BRCA variants in the clinical setting. Our method confirmed the presence of variants with very high accuracy, and without false-positive results."

Long-range PCR and next generation sequencing identified a wide range of intronic BRCA1/2 variants, both commonly occurring and rare, that individually or in combination may impact BRCA1/2 function. Dr. Ozcelik notes that despite a small sample size, the data shows great variability in the number, type, and frequency of variants that can be identified from familial breast cancer patients.

"Our challenge now is to establish analytical methods that systematically investigate this more comprehensive data in order to provide better risk information for clinical management of the disease," says Dr. Ozcelik. "Given the extensive level of genetic information acquired from each patient, profiles can be constructed in breast cancer patients compared to population controls to produce a more effective means of generating BRCA1/2-associated risk to the individuals and their families.


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Contact: David Sampson
jmdmedia@elsevier.com
215-239-3171
Elsevier Health Sciences
Source:Eurekalert

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