AALL1521: A Phase 2 Study of Ruxolitinib With Chemotherapy in Children With Acute Lymphoblastic Leukemia

Patients must have Acute Lymphoblastic Leukemia with a JAK/CRLF2 pathway alteration

Description

This is a nonrandomized study of ruxolitinib in combination with a standard multi-agent chemotherapy regimen for the treatment of B-cell acute lymphoblastic leukemia. Part 1 of the study will optimize the dose of study drug (ruxolitinib) in combination with the chemotherapy regimen. Part 2 will evaluate the efficacy of combination chemotherapy and ruxolitinib at the recommended dose determined in Part 1.

Eligibility Criteria

• Ages eligible for study: 1 year to 21 years (Child, Adult)
• De novo high-risk (HR) Ph-like B-ALL for which any of following criteria are present at diagnosis:
  • Age ≥ 10 years
  • White blood cell (WBC) ≥ 50 × 10^3/μL
  • CNS3 leukemia
  • Systemic steroid pretreatment without presteroid WBC documentation
• One of the following Ph-like ALL genetic lesions must be present in the diagnostic bone marrow or peripheral blood sample:
  • CRLF2 rearrangement with JAK1 or JAK2 mutation (JAK+)
  • CRLF2 rearrangement without JAK mutation
  • Other JAK pathway alterations (eg, JAK2 fusions, erythropoietin receptor (EPO-R) fusions, SH2B3 deletions, interleukin-7 receptor-alpha (IL7RA) mutations) with or without CRLF2 rearrangement
• Completed a 4-drug Induction therapy regimen (modified aBFM regimen or equivalent) in Study AALL1131 or as the institutional standard of care for HR B-ALL and have had end-Induction minimal residual disease (MRD) assessed

Detailed inclusion and exclusion criteria as listed clinicaltrials.gov.

Contact

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Rachel Rau, MD
Local Principal Investigator
Texas Children’s Cancer and Hematology Center