Mifamurtide compared with sorafenib in high-risk osteosarcoma, a bone cancer
Compares mifamurtide with sorafenib in children and young adults with high-risk osteosarcoma.
Plain-language title generated from the registry record
Registry title: Evaluation of the Safety and Efficacy of Mifamurtide Versus Standard Treatment With Sorafenib in Patients With High-risk Osteosarcoma
Key facts
- Where
- Warsaw, PolandSee the site
- Phase
- Phase 2
Where in Poland
- Mother and Child InstituteWarsaw, PolandTaking people
Questions to ask the study team
- How often do I need to come in, and for how long each time?
- Are travel costs paid?
- Can I keep my own doctor?
- What happens if I want to stop?
Trial details
- Who runs it
- Anna Raciborska
- Trial code
- NCT07787429
- Record updated
- 7 October 2026
- Original description
Prospective, open, interventional, randomized, non-commercial trialRead full original descriptionShow less
Evaluation of the Safety and Efficacy of Mifamurtide Versus Standard Treatment With Sorafenib in Patients With High-risk Osteosarcoma (DRAGONFLY)
Prospective, open, interventional, randomized, non-commercial trial
Inclusion: Part I:; Age ≥ 5 to ≤ 30 years at the time of qualification; Histopathologically confirmed osteosarcoma based on previous diagnostic tests; Provision of written, informed consent to participate in the study, including treatment with mifamurtide and sorafenib, in accordance with current legal regulations, prior to the initiation of any study procedures; Part II:; Participants of the Part I classified as high-risk; Expected survival of at least 12 weeks from the time of signing informed consent; Patient deemed capable of receiving systemic treatment; Patient able to swallow tablets; Disease in complete remission or stable disease per WHO criteria before randomization; Major surgery performed ≥ 2 weeks and radiotherapy ≥ 4 weeks before inclusion in the mifamurtide group; Recovery from adverse effects of prior surgery and/or radiotherapy; Signed informed consent to participate in the study (including mifamurtide and sorafenib treatment) in accordance with applicable legal regulations; Agreement to use effective contraception throughout the study period and for at least one year after discontinuing treatment for patients of reproductive age.
Exclusion: Previous treatment with mifamurtide; Hypersensitivity to the investigational drug or any of its components (including mifamurtide and sorafenib); Concurrent treatment with drugs that may interact with mifamurtide, sorafenib, or other cytostatics; Persistent toxicity from prior therapy that precludes treatment with mifamurtide or sorafenib; Need or probable need for corticosteroids at doses > 10 mg of prednisone (or equivalent) daily or other immunosuppressive drugs; Arterial or venous thromboembolic events, such as stroke (including transient ischemic attacks), deep vein thrombosis, or pulmonary embolism within 6 months before the first administration of the investigational drug; Any bleeding or hemorrhagic event ≥ CTCAE v5 grade 3 within 4 weeks before the first administration of the investigational drug; Diagnosis of other malignancies prior to study entry; Failure to meet any of the inclusion criteria; Active hepatitis B or C or chronic hepatitis B or C requiring antiviral therapy; Significant cardiac conduction abnormalities, including a known family history of long QT syndrome or a corrected QT interval (QTc) > 480 ms; Symptoms of congestive heart failure or a left ventricular ejection fraction < 50%; Other acute or persistent disorders, behaviors, or abnormal laboratory results that may increase the risk associated with participation in this clinical study or receiving the investigational drug, may impact study results interpretation, or, in the investigator's opinion, disqualify the patient from study participation; Uncontrolled blood pressure; Pregnancy planning, current pregnancy, or breastfeeding.