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To evaluate the efficacy and safety of naxitamab in patients with refractory Ewing's sarcoma.

Status
Recruiting
Phases
Phase 2
Study type
Interventional
Source
EU CTIS
Registry ID
CTIS2024-514441-11-00
Acronym
BUTTERFLY
Enrollment
24
Registered
2024-08-06
Start date
2023-09-28
Completion date
Unknown
Last updated
2024-08-06

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Ewing's sarcoma

Brief summary

Safety and tolerability will be assessed based on an analysis of adverse events on all enrolled subjects. These events will be divided according to severity, seriousness, affected organ or system and analyzed for:, number of serious adverse events (SAE), the number of adverse events (AE), including events of particular importance to the incidence and severity of adverse events occurring during treatment (TEAE) (encoded according to the preferred term and class of organ systems using the Medical Dictionary for Regulatory Activities (MedDRA); these events will be estimated according to the National Cancer Institute Common Terminology Criteria for Adverse Events version 5.0 (NCI CTCAE v5.0), the result of a medical examination with the analysis of recorded vital signs, assessment of laboratory abnormalities according to NCI CTCAE v5.0, This primary end point has been redacted following transparency rules and protection of confidential information.

Detailed description

To assess the efficacy of the use of naxitamab in combination with standard IT chemotherapy versus chemotherapy alone:, EFS (Event-Free Survival) - from randomization to the date of disease progression, recurrence, second malignancy, death or to date of last follow-up for patients without events,, PFS (Progression-Free Survival) - from randomization to progression of the disease,, ORR (Overall Response Rate) - defined as the proportion of patients with a best overall response of complete response (CR) or partial response (PR) according WHO criteria,, OS (Overall Survival) - from randomization to subject's death.

Interventions

Sponsors

Instytut Matki I Dziecka
Lead SponsorOTHER

Eligibility

Sex/Gender
All
Age
0 Years to 64 Years

Design outcomes

Primary

MeasureTime frame
Safety and tolerability will be assessed based on an analysis of adverse events on all enrolled subjects. These events will be divided according to severity, seriousness, affected organ or system and analyzed for:, number of serious adverse events (SAE), the number of adverse events (AE), including events of particular importance to the incidence and severity of adverse events occurring during treatment (TEAE) (encoded according to the preferred term and class of organ systems using the Medical Dictionary for Regulatory Activities (MedDRA); these events will be estimated according to the National Cancer Institute Common Terminology Criteria for Adverse Events version 5.0 (NCI CTCAE v5.0), the result of a medical examination with the analysis of recorded vital signs, assessment of laboratory abnormalities according to NCI CTCAE v5.0, This primary end point has been redacted following transparency rules and protection of confidential information.

Secondary

MeasureTime frame
To assess the efficacy of the use of naxitamab in combination with standard IT chemotherapy versus chemotherapy alone:, EFS (Event-Free Survival) - from randomization to the date of disease progression, recurrence, second malignancy, death or to date of last follow-up for patients without events,, PFS (Progression-Free Survival) - from randomization to progression of the disease,, ORR (Overall Response Rate) - defined as the proportion of patients with a best overall response of complete response (CR) or partial response (PR) according WHO criteria,, OS (Overall Survival) - from randomization to subject's death.

Countries

Poland

Outcome results

None listed

Source: EU CTIS · Data processed: Feb 4, 2026