Overview
This is a multicenter, open-label, Phase 1/2 study evaluating the safety, tolerability, pharmacokinetics, pharmacodynamics, and antitumor activity of domatinostat in combination with sirolimus in adolescents and adults with relapsed or refractory sarcoma and osteosarcoma.
Eligibility
Inclusion Criteria:
- Age ≥12 and ≤40 years.
- Histologically confirmed relapsed or refractory sarcoma (Phase 1) or osteosarcoma (Phase 2).
- At least one prior standard systemic therapy regimen.
- Not candidates for available therapies known to provide survival benefit.
- Karnofsky/Lansky performance score ≥60.
- Life expectancy ≥16 weeks.
- Adequate organ function: ANC ≥1,000/mcL, Platelets ≥100,000/uL, Hemoglobin ≥8 g/dL, Adequate hepatic and renal function.
- Ability to swallow tablets.
- Negative pregnancy test for females of childbearing potential.
- Agreement to use effective contraception.
- Ability to provide informed consent/assent.
Exclusion Criteria:
- Receiving another investigational agent.
- Receiving concurrent anticancer therapy.
- Known hypersensitivity to domatinostat or sirolimus.
- Bone marrow-only disease.
- CNS metastatic disease.
- Major surgery within 2 weeks prior to treatment.
- Active malignancy within the previous 3 years (with protocol-specified exceptions).
- History of solid organ transplantation.
- Significant recent cardiac disease.
- Concurrent prohibited CYP3A4/P-gp interacting medications.
- Uncontrolled infection or other serious uncontrolled illness.
- Pregnancy or breastfeeding.
- HIV infection on antiretroviral therapy.
- Weight \<40 kg.
- Inability to comply with study requirements.
