Actor Ed Burns and his supermodel wife Christy Turlington are backing a new campaign to find a bone marrow donor for a little boy who attends the same pre-school as their three-year-old son FINN.
Burns found out about four-year-old Kai Anderson when he spotted a poster on the school's wall.
Anderson suffers an aggressive form of cancer called Philadelphia Chromosome-Positive Acute Lymphoblastic Leukaemia. He was diagnosed just a year after his father was found to be suffering from Mantle Cell Lymphoma, a similarly rare form of cancer.
Burns has vowed to publicise Anderson's plight, telling, "It broke my heart. I went home and told my wife. We said, 'What can we do to help this family?' She called a friend and got more details. We wanted to do whatever we could."
And the couple is helping to encourage New Yorkers to attend a donor drive for Kai on 2 May (09) at the Montessori School of Manhattan.
Burns adds, "The Tribeca Film Festival is going on that same day, so thousands of people will be in the neighbourhood. We're trying to get them to take a few minutes of their day to have their cheek swabbed so that they can become potential donors."