@edgarblythe,
My sympathies to your B-I-L and to your family. For those going through it can seem like the torture of the damned. I had to learn about this for my own cancer situation as currently I'm in 100% remission from Lymphoma. If in the future my cancer returns (50-50 shot within next 5 years), I'll have to consider it for myself, too.
Stem-cell implant therapy can be very successful and offers a great possibility of finally beating this disease. Making it through, though, takes everything you got; however, the road through the process is very harrowing.
For those who might be unaware of the stem-cell transplant rocess, I'm outlining it here:
They have to reduce your immune system to nothing before they implant your stem cells. Once they're sure that has been done, they build your immune system back up with your cells. During that time, they need to keep you hospitalized and isloated, as it takes a massive toll...(possible colds, fevers, flu..and infections are likely), but they are on top of it with counter-measures.