one of the happiest babies you'll probably ever meet. [giggles] children with down syndrome typically have a higher risk for developing acute myeloid leukemia, or just leukemia in general. and here we are. marlo thomas: st. jude children's research hospital works day after day to find cures and save the lives of children with cancer and other life-threatening diseases. tiffany: she was referred to st. jude at 11 months. they knew what to do as soon as they got her diagnosis. they already had her treatment plan drawn out. and they were like, this is what we're going to do. this is how long it's going to take. this is how long in between. this place is like a family to us now. like, i can't say enough how grateful we are to be here. medical bills are always a big thing to everybody because everybody knows that anything medical is going to be expensive. we have received no bills since being at st. jude. we have paid for nothing.