Organ donation

Actually, here's one for you lynx. Say a close relative contracted a medically incurable condition that was imminently life threatening. You, by some form of bizarre providence are the only match for them to have a kidney transplant, the only procedure that will save them from a premature death. Would you reject their request for an organ that you can quite reasonably spare?

funnily enough, that's exactly what happen to my father's cousin, of which my father willingly donated his kidney for.

this thread is spooky since I only just heard that he's going to have an operation soon yesterday.