In T‐ALL samples (Fig 3B), unsorted cells and three subpopulations (CD34+/CD7+, CD34+/CD7− and CD34−/CD7+) responded to navitoclax (IC50 range 21–388 nmol/l) but not to the same extent as BCP‐ALL cases. The gene discussed is CD34; the disease is acute lymphoblastic leukemia.