I have 15 tumors that were sequenced using whole genome sequencing at 30x depth. I would like to identify somatic variants using Mutect2. Unfortunately we don't have any normal samples, so I would like to build a Panel of Normals to use with Mutect2 in tumor-only to identify somatic variants. I also plan on running Mutect2 with gnomAD to help filter germline variants.
Are there any resources that host publicly available WGS samples I could use to construct the Panel of Normals? Ideally I'm looking for healthy blood samples sequenced using TruSeq library prep on the Illumina NovaSeq platform.
I've checked out the 1000 Genomes project but it appears the sequencing technology they used doesn't match my own (probably due to how long ago the project finished). Are there newer resources that would have WGS samples with similar technical properties as my samples?
Furthermore, even if you aren't aware of samples with those specific properties, what resources do people use for WGS Panel of Normal creation if they don't have in house samples?