Simultaneous mutation and copy number variation (CNV) detection by multiplex PCR-based GS-FLX sequencing.

Area of Science:

• Genomics
• Molecular Biology
• Genetic Diagnostics

Background:

• High-throughput sequencing (HTS) offers powerful genomic analysis capabilities.
• Multiplex PCR amplification is a technique for amplifying multiple DNA targets simultaneously.
• Integrating multiplex PCR with HTS can enhance the efficiency and scope of genomic studies.

Purpose of the Study:

• To evaluate multiplex PCR amplification as a front-end for high-throughput sequencing.
• To assess the applicability of this approach for detailed analysis of complex genomes.
• To expand the utility of massive parallel sequencers for genetic and genomic variant detection.

Main Methods:

• Utilized multiplex PCR reactions to amplify coding regions of seven peripheral neuropathy genes.
• Sequenced amplified regions from 40 individuals using a GS-FLX genome sequencer.
• Compared sequencing data with Sanger sequencing for variant detection and copy number variation (CNV) analysis.

Main Results:

• Achieved highly specific and uniform amplification using multiplex PCR.
• Confirmed sensitive detection of all variants present compared to Sanger sequencing.
• Demonstrated the ability to determine individual copy number variations (CNVs) from multiplexed amplicons.

Conclusions:

• Multiplex PCR is a straightforward and effective front-end for HTS.
• This method significantly expands the applicability of massive parallel sequencers for analyzing moderate numbers of amplicons.
• The approach is suitable for resequencing candidate gene exons and molecular genetic diagnostics.