100% not the same as Alex's sad situation, but for kidneys a dual stem-cell-transplant and kidney-transplant has been done[1]. It was NOT done due to cancer (but due to kidney scarcity) and was NOT done for the liver. I don't think it could ever even be done for the liver because stem-cell-transplant cannot (to the best of my knowledge) be done from a cadaver-donor. Maybe some medical center would be willing to try a living-donor for SCT and partial-liver...but I'm not sure it would get past the ethics committee.
[1] https://clinicaltrials.gov/ct2/show/NCT00319657