Adam Krief, a 31-year-old Israeli Jewish father of three of Los Angeles, is fighting for his life in a race to find a single bone marrow donor match as the only option to treat a rare form of blood cancer.

Krief is on chemotherapy not as a cure, but as a way to have more time to find a donor for a bone marrow transplant.

Krief was diagnosed with primary myelofibrosis, a chronic disorder that occurs in one per 100,000 people. This type of cancer causes severe anemia and bone marrow failure in which the normal blood marrow tissue is replaced with fibrous scar tissue.

The Krief family started a Facebook campaign called, Hope4Adam, urging people to register as a donor through Gift of Life Marrow Registry. He has yet to find one match among the 13 million people on the bone marrow donor registry. They are also trying to raise $2 million to help pay to for the swab kits that test for a donor match.

The campaign has gone viral around the world, including in Israel where many organizations and leaders are sharing his story to encourage people to donate and increase Krief’s chance of finding a match.