A good friend of ours was diagnosed with a rare bone marrow disease in 2013.  He has had two unsuccessful treatments and is yet to find a donor match. Fortunately his condition has improved but there is a good chance he will need to search again for a bone marrow donor.

My brother and I are doing our bit to raise money and awareness for the people at Anthony Nolan, who carry out very important work for those in need of stem cell donors. 

Those of us who are able to are also doing our bit by joining the donor register - please look into doing so too:
https://www.anthonynolan.org/8-ways-you-could-save-life/donate-your-stem-cells