Trinity United Methodist Church in Roanoke is being transformed into housing for seniors.Preview: Parents discover drug leucovorin, an older, off-label drug that treats chemo side effects helps their autistic son. Caroline Connor tells CBS News that after discovering Dr. Richard Frye's research on the drug derived from folic acid, her son Mason began speaking within days of taking it. Researchers are studying using Leucovorin to bypass a blockage in folic acid transport to the brain. Challenges remain in getting it FDA approved due to its low cost and lack of profit potential.