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Repurposed Drugs Clear Dormant Breast Cancer Cells in Phase II Trial

The Penn-led study targets bone marrow sleeper cells that standard imaging misses.

Overview

  • Published today in Nature Medicine, the CLEVER randomized phase II trial enrolled 51 survivors and cleared minimal residual disease in about 80% within 6 to 12 months.
  • Three-year recurrence-free survival exceeded 90% for patients on single-drug therapy and reached 100% for those who received both drugs.
  • After a median follow-up of 42 months, only two participants have experienced a recurrence.
  • The study used FDA-approved drugs that act on autophagy and mTOR pathways, though investigators did not disclose the specific agents.
  • Larger confirmatory phase II studies, ABBY and PALAVY, are now enrolling at multiple cancer centers.