At work I run into people who work at The National Cancer Institute.
They are beginning to believe ALL cancers are genetic. If you have the gene and are exposed to the stimulus to turn on the gene, you have a good chance of getting that cancer.
If you don’t have the mesothelioma gene, you could swim in asbestos everyday and never have a problem.
They are starting to research the stimulus for the different genes.
I also think predisposition . DOnt know if I would go as far as you could swim in abestos and not get it..