For US Residents only
B cells are defenders of your body. Along with other cells, they make up your body’s adaptive immune system. When B cells become cancerous, they can grow out of control and cause a type of blood cancer called B-cell acute lymphoblastic leukemia (ALL).
B-cell ALL is the most common form of pediatric leukemia. While many children with leukemia get better after their first treatment, some may not.
About 20% of children with B-cell ALL will not have success with initial treatments. These children experience a relapse, which means their cancer has returned, or their cancer is refractory, which means it did not respond to treatment.
In the past, the only choices for children and young adults with relapsed or refractory B-cell ALL have been chemotherapy or stem cell transplant. But there is now a different treatment option with KYMRIAH® (tisagenlecleucel).
Children with cancer may have questions about their condition and treatment. KYMRIAH FOR KIDS is a way to explain KYMRIAH to young children. Throughout this website, there are questions a child might have along with a simple answer. If you are caring for a young child with cancer, look for KYMRIAH FOR KIDS for ways to talk with your child about KYMRIAH.