Analyzing tumor microenvironment in localized osteosarcoma patients treated with mifamurtide

Tumor Microenvironment in Patients With Localized Osteosarcoma Treated With Mifamurtide: a Translational Study

Observational Istituto Ortopedico Rizzoli · NCT03737435

This study looks at how the treatment with mifamurtide, along with chemotherapy, affects the tumor environment in patients with localized osteosarcoma.

Quick facts

Study typeObservational
Enrollment80 (estimated)
SexAll
SponsorIstituto Ortopedico Rizzoli Academic / other
Drugs / interventionschemotherapy
Locations1 site (Bologna)
Trial IDNCT03737435 on ClinicalTrials.gov

What this trial studies

This observational study aims to analyze the tumor microenvironment in patients with localized osteosarcoma who have been treated with chemotherapy, with or without mifamurtide. It is an international, multicenter retrospective biological study that utilizes archival biological samples to conduct its analysis. The study focuses on patients who participated in the ISG-OS2 and GEIS-33 protocols, allowing for a comprehensive examination of the effects of treatment on tumor biology.

Who should consider this trial

Good fit: Ideal candidates for this study are patients with primary localized osteosarcoma who have received chemotherapy with or without mifamurtide.

Not a fit: Patients diagnosed with conditions other than osteosarcoma will not benefit from this study.

Why it matters

Potential benefit: If successful, this study could provide insights into the tumor microenvironment that may lead to improved treatment strategies for localized osteosarcoma.

How similar studies have performed: While this study is retrospective and focuses on a specific treatment approach, similar studies analyzing tumor microenvironments have shown promise in understanding cancer biology and treatment responses.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Patients with primary localized osteosarcoma who received chemotherapy +/- mifamurtide according to ISG-OS2/GEIS-33 trials,
2. Paraffin-embedded tissue tumor (FFPE) blocks from archive available to perform the biological analysis
3. Written informed consent prior to any study-specific analysis and/or data collection

Exclusion Criteria:

1) Patients with diagnosis different from osteosarcoma

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Where this trial is running

Bologna

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Localized Osteosarcoma
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.