Gall rhoi mêr esgyrn/bôn-gelloedd hefyd achub bywydau cleifion sy’n dioddef mathau penodol o ganserau a chlefydau gwaed a’r system imiwnedd eraill sy’n effeithio ar fêr yr esgyrn. Mae Cofrestrfa Rhoddwyr Mêr Esgyrn Cymru a chofrestrfeydd eraill y DU yn casglu mêr esgyrn/bôn-gelloedd gan roddwyr ar gyfer cleifion sydd angen trawsblaniad i achub eu bywyd yma yn y DU ac ar draws y byd.
Bone marrow/stem cells also provide lifesaving treatments to patients suffering from certain types of cancers and other blood and immune system diseases that affect the bone marrow. The Welsh Bone Marrow Donor Registry (WBMDR) and other UK registries collect bone marrow/stem cells from donors for patients who need lifesaving transplants both here in the UK and worldwide.