Melissa Boyle, of Southampton, donated her stem cells to a stranger through the register run by blood cancer charity DKMS UK. The donor process became deeply personal for Ms Boyle after losing her 34-year-old brother Andrew to leukaemia in 2021. "DKMS came up with information about how you could join the stem cell donor register, so I did it straight away." READ MORE: World-first trial of fridge-free vaccine developed in SouthamptonMelissa Boyle has donated her stem cells to a stranger through the register run by DKMS UK. Although strict regulations protect the identities of donors and recipients, Ms Boyle was told her cells helped a man in Australia.