About this trial
The purpose of this study is to determine the feasibility of administering DL-alpha-difluoromethylornithine (DFMO) to patients with relapsed Ewing sarcoma and osteosarcoma who have completed all planned therapy and have no evidence of disease.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Patients < 40 years of age at the time of enrollment
Diagnosis of relapsed osteosarcoma or relapsed Ewing sarcoma who have completed all planned therapy for their relapse, as described in the protocol, and have no evidence of disease
Patients must have a performance status corresponding to Eastern Cooperative Oncology Group (ECOG) scores of 0, 1, or 2
Myelosuppressive chemotherapy: At least 14 days must have elapsed since completion of myelosuppressive therapy
Disqualifiers
Pregnant or breastfeeding females. Men and women of childbearing potential and their partners must agree to use adequate contraception while enrolled on this study. Based on the teratogenic potential of the agent, pregnant women will be excluded from this study. Because of potential risks to breastfed infants due to drug metabolites that could be excreted in breast milk, female patients who are lactating must agree to stop breastfeeding or will otherwise be excluded from this study. Females of childbearing potential must have a negative pregnancy test to be eligible for this study
Patients must not have an uncontrolled infection
Patients with a significant intercurrent illness (any ongoing serious medical problem unrelated to cancer or its treatment) that is not covered by the detailed exclusion criteria and that is expected to interfere with the action of study agents or to significantly increase the severity of the toxicities experienced from study treatment are not eligible
Trial design
Single group
Treatments tested in this trial
DFMO
DrugDFMO dose will be calculated based on the BSA measured within 14 days prior to the beginning of each cycle. Tablets may be swallowed whole, chewed, or crushed and mixed with soft food or liquid.
Treatment groups
Trial outcomes
Primary outcomes
Feasibility of Administering DFMO
Feasibility will be defined as the ability to successfully administer DFMO to at least 80% of subjects who initiate therapy until either disease recurrence or completion of the maximally allowed duration of therapy. Results will be summarized using basic descriptive statistics.
Secondary outcomes
Event Free Survival
The number/percentage of participants with event-free survival (EFS) at 2 years will be determined. Event-free survival will be defined as the time from diagnosis until drug discontinuation, disease progression, recurrence at any site, secondary malignancy, death from any cause, or last follow-up, whichever is observed first.
Sponsors and contacts
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Montefiore Medical Center
Lead sponsor
Johns Hopkins University
Collaborator