Next Generation Sequencing Method for the Detection of EGFR Gene Mutations in the Plasma of Patients With Lung Cancer

The patients' blood has already been collected in Streck tubes for circulating DNA and the plasma has been stored at -80°C as per the procedure for the routine diagnostic test cobas EGFR Mutation Test v2. No further blood sampling will be required from patients. Circulating DNA/RNA will be extracted from 2-5 ml of plasma. The extracted cfDNA will be quantified. The libraries will be prepared using the NGS Plasma-SeqSensei™ Solid Cancer IVD Kit (Sysmex) and will be evaluated at the Tapestation (Agilent) to verify their quality and quantity using D1000 Screentapes. The libraries consisting of approximately 16 samples each will then be sequenced on an Illumina NextSeq 500 sequencer using the Illumina NextSeq 500/550 Mid Output Kit v2.5 (150 Cycles). Data analysis will be performed using Plasma-SeqSensei™ IVD Software (Sysmex).

The patients' blood has already been collected in Streck tubes for circulating DNA and the plasma has been stored at -80°C as per the procedure for the routine diagnostic test cobas EGFR Mutation Test v2. No further blood sampling will be required from patients. Circulating DNA/RNA will be extracted from 2-5 ml of plasma. The extracted cfDNA will be quantified. The libraries will be prepared using the cobas® EGFR Mutation Test v2 (Roche) and will be evaluated at the Tapestation (Agilent) to verify their quality and quantity using D1000 Screentapes. The libraries consisting of approximately 16 samples each will then be sequenced on an Illumina NextSeq 500 sequencer using the Illumina NextSeq 500/550 Mid Output Kit v2.5 (150 Cycles).