This phase I/II trial studies the side effects and best dose of anti-SEMA4D monoclonal antibody VX15/2503 (VX15/2503) and to see how well it works in treating younger patients with solid tumors that have come back after treatment, or do not respond to treatment. Monoclonal antibodies, such as VX15/2503, may interfere with the ability of tumor cells to grow and spread.

Principal Investigator:
Josephine HaDuong, MD

Research Coordinator:
Tina Templeman
(714) 509-8646

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  • Clinical Trial Info
  • IRB Number: 180105
  • Sponsor: Children's Oncology Group
  • Protocol Number: ADVL1614
  • NCT Number: NCT03320330
  • Research Type: Adolescents and Young Adults, Recurrent/Refractory Cancer, Solid Tumors
  • Phase: I
  • Status: Active - Open to Enrollment


  • Part A: ≥ 12 months to < 21 years of age
  • Part B:  ≥ 22 years and ≤ 30 years of age at the time of study enrollment until part A is complete. Part B will expand to include patients ≥ 12 months and ≤ 30 years of age once Part A is complete.
  • Recurrent or refractory solid tumors, excluding CNS tumors
  • Must have either measurable or evaluable disease
  • Prior single agent therapy with irinotecan, temozolomide, or an mTOR inhibitor, excluding ABI-009, are eligible.
  • Standard COG Phase 1 organ function requirements


  • Excluded concomitant medications: Corticosteroids (unless on stable dosing), other investigational drugs, other anti-cancer agents, anti-GvHD agents post-transplant