RecruitingBehavioural interventionLet's Get REAL: Family Health Communication Tool in Pediatric Stem Cell Transplant and Cellular TherapyThe investigators will conduct a pilot feasibility and efficacy trial of a newly developed family health communication tool (called Let's Get REAL) in increasing youth involvement in real-time stem cell transplant and cellular therapy decisions (SCTCT). The investigators will pilot the intervention among 24 youth and their parents, stratified by youth age (stratum 1, 8-12 years of age and stratum 2, 13-17 years of age).