There was a decrease in levels of HSP90 after induction (range at diagnosis 1.22–23.85 ng/mL: range at day 33rd 1.07–52.51 ng/mL); these findings suggest that cancer cells are sensitive to steroids and that HSP90 is related to a poor response to steroids in children with ALL [130]. The gene discussed is HSP90AB1; the disease is cancer.