It was a "directed donation" from a deceased organ donor, according to OneLegacy CEO Tom Mone.

CNN: Natalie Cole kidney came from deceased fan

In late July the Vanguard Charitable Endowment Program sent warning letters to 32 folks who set up tax-deductible donor-advised funds in 1998 but haven't yet directed a penny from those funds to an operating charity.

FORBES: Magazine Article