A dear friend is using one of these and has a similar story to hers. He was given 3 months to live...16 months ago!
Sincere prayers for your friend. I take it he is a fairly young person?
My dear dad was diagnosed with a glioblastoma at 77 and died after only 10 weeks. The disease is heartbreaking and this is encouraging news. So glad that your friend is responding so well. I hope he has many more years!