Genomic DNA extraction and library preparation with TruSightâ„¢ Oncology 500 (TSO 500) Library Preparation Kit (Illumina, San Diego, CA, United States) were performed following protocols described previously (Li et al., 2021 (link)). The library was sequenced on the Illumina NextSeq 550Dx platform with the paired-end run of 150 base pairs. The quality of sequencing data was verified by TSO 500 Docker pipeline. The process of SNVs and Indels mutation calling, TMB measuring, and reads filtering were performed following the description in the previous study (Li et al., 2021 (link)). Germline variants could be filtered out using an in-house built database, and all parameters were set according to the previous workflow (He et al., 2021 (link)).
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