Proof-Of-Concept Study of Metabolically Optimized, Non-Cytotoxic 5-Azacitidine and Decitabine Epigenetic Therapy for Myeloid Malignancies
Benjamin Tomlinson
Summary
Another term for myelodysplastic syndrome is bone marrow failure. The bone marrow is where components of blood such as red cells, platelets and white cells are made. In bone marrow failure, the ability for bone marrow to make these cells is decreased. In myelodysplastic syndrome, this decreased bone marrow function is believed to result from abnormalities that prevent the normal maturation process by which bone marrow cells develop into red blood cells, white blood cells and platelets. In myelodysplastic syndrome, these abnormal bone marrow cells occupy space in the bone marrow and prevent the function of remaining normal bone marrow cells. One approach to treating the abnormal growth of immature cells is to give chemotherapy which damages DNA within these cells and causes their death. Unfortunately, such therapy has side-effects, since even normal cells can be affected by the treatment. Both 5-azacitidine (5AZA) and decitabine (DEC) are FDA-approved to treat MDS. In this study, 5AZA and DEC will be administered using an alternating low doses schedule in an attempt to overcome the known mechanisms of resistance to the administration of 5AZA or DEC as single agents caused by automatic adaptive shifts in DNA metabolism.
Description
This will be a single arm, open label pilot study of 5AZA-alt-DEC. Participants will be treated for a minimum of 24 weeks in the absence of clear evidence of progressive disease. Participants who have any response will be permitted to continue treatment until relapse or progression of disease that is not sensitive to protocol defined dose escalation. The primary objective of this study is to determine Overall Response Rate (ORR) of 5AZA-alt-DEC. The combined response endpoint will include complete response (CR), partial response (PR), and hematologic improvement (HI), with HI criteria specifi…
Eligibility
- Age range
- 18+ years
- Sex
- All
- Healthy volunteers
- No
Inclusion Criteria: * Participants must have MDS or MDS/myeloproliferative overlap disorder with potential sensitivity to HMA therapy, defined as prior published evidence of response to HMA * Myelodysplastic Syndromes: * As classified by hematopathology review of WHO categories, myelodysplastic/myeloproliferative neoplasm unclassifiable, refractory anemia with ring sideroblasts and thrombocytosis, refractory cytopenia with unilineage dysplasia (RCUD), refractory anemia with ring sideroblasts (RARS), refractory cytopenia with multi-lineage dysplasia (RCMD), refractory anemia with exces…
Interventions
- Drug5-azacytidine
5-azacytidine 50 mg/m\^2 Day 1 every week ± G-CSF \~5 µg/kg (300µg vs 480µg)
- DrugDecitabine
Decitabine 5 mg/m\^2 Day 4 every week ± G-CSF \~5 µg/kg (300µg vs 480µg)
Location
- Cleveland Medical Center, University Hospitals Seidman Cancer Center, Case Comprehensive Cancer CenterCleveland, Ohio