DNeasy Tissue and Blood Kit (Qiagen, Venlo, Netherlands) were utilized to isolate DNA. Libraries were created via Agilent SureSelect Human All Exon kit V6 (Agilent Technologies, CA, USA) and sequenced on an Illumina NovaSeq 6000 platform with 150 bp paired-end reads. Valid sequencing data were then aligned to the GRCh37/hg19 by BWA (v0.7.12) (28 (link)). Then, SAM tools (29 (link)), Picard (v1.87) and Genome Analysis Toolkit (GATK) (30 (link)) were used to sort BAM files and performing repeated marking, local realignment, and base quality recalibration. Single nucleotide variants (SNVs) were identified using the GATK Unified Genotyper and indels were determined using VarScan. ANNOVAR package (31 (link)) were used for annotation of all substitutions and indels. Recurrent mutated genes in FL reported in previous literature were selected and further analysed (5 (link)).
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