Mesothelioma (MPM) is a social disease because pats with this cancer have lived and or worked at the wrong place in the wrong time.
I think this requires an extra caution every time we talk about new potential treatments
The use of immune check point inhibitor for MPM is light years of distance from being demonstrated . The ugly truth is that, apart form a tiny subpopulation  with some response,  there are no solid results at all  that these responses improve patients survival as recently shown ( www.ncbi.nlm.nih.gov/pubmed/?term=aidan+tan )  .
Moreover patients eligible are just a small subpopulation highly expressing PD1. We all know Mavis and are delighted the drug is working with her but any oncologist is fully aware that anecdotal cases do not justify to change clinical practice.