WAS Overview
Seattle Cancer Care Alliance brings together the leading research teams and cancer specialists of Fred Hutch, Seattle Children's, and UW Medicine. One extraordinary group whose sole mission is the pursuit of better, longer, richer lives for our patients. Learn More


Wiskott-Aldrich Syndrome (WAS) is a serious medical condition that causes problems both with the immune system and with blood clotting. The immune abnormalities cause WAS patients to be very susceptible to infections with bacterial, fungal, and viral organisms. The problems with easy bruising and bleeding in WAS patients result from having low numbers of small, non-functional platelets, the cells in the blood that clump together to form blood clots. 

Success Rates
If your child's condition requires a bone-marrow transplant, you should know that the Fred Hutch Transplant program at SCCA was ranked first in outcomes in a four-year study by the National Marrow Donor Program (NMDP) that measured one-year survival rates of patients among 122 transplant centers in the United States. The Hutch pioneered the use of bone marrow transplants as a treatment for blood diseases over 40 years ago. Since then thousands of patients with leukemia have come from around the world to receive bone-marrow transplants at SCCA. Bone-marrow transplants have transformed leukemia and related cancers, once thought incurable, into highly treatable diseases with survival rates as high as 80 percent.