Concomitant inhibition of the thioredoxin system and nonhomologous DNA repair potently sensitizes Philadelphia-positive lymphoid leukemia to tyrosine kinase inhibitors.

Breakpoint cluster region-Abelson () gene fusion is an essential oncogene in both chronic myeloid leukemia (CML) and Philadelphia-positive (Ph) B-cell acute lymphoblastic leukemia (B-ALL). While tyrosine kinase inhibitors (TKIs) are effective in up to 95% of CML patients, 50% of Ph B-ALL cases do not respond to treatment or relapse. This calls for new therapeutic approaches for Ph B-ALL.