Would you recommend adding a TKI to a pediatric regimen for a AYA B-ALL patient with IKZF1 mutation?   

I would not add a TKI to standard chemotherapy in this situation. Background/Rationale: IKZF1 mutations (specifically deletions) are associated with inferior prognosis. Specifically, the prognosis appears to be worst with mutations that lead to loss-of-function (e.g., focal deletions [Beldjord ...