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Retroperitoneal Sarcoma clinical trials
Every US clinical trial registered for Retroperitoneal Sarcoma — phase mix, recruiting status, and the sponsors running them, straight from the NIH ClinicalTrials.gov registry.
7 US clinical trials · 6 currently recruiting
The research picture
Retroperitoneal Sarcoma has 7 registered US clinical trials, 6 of them open to new participants right now — about 86% of the total.
- 6
- recruiting participants now
- 86%
- of trials open to enrollment
- 1
- in Phase 3–4 (later-stage)
- 1
- top sponsor: Fondazione IRCCS Istituto Nazionale dei Tumori, Milano
Counts reflect the public ClinicalTrials.gov registry as last mirrored by PlainTrial. Status and phase are reported by each study's sponsor. This is reference information, not medical advice.
Active & Recent Trials
REtroperitoneal SArcoma Registry: an International Prospective Initiative
Fondazione IRCCS Istituto Nazionale dei Tumori, Milano
NCT03838718
Surgery With or Without Neoadjuvant Chemotherapy in High Risk RetroPeritoneal Sarcoma
European Organisation for Research and Treatment of Cancer - EORTC
NCT04031677
Proton or Photon RT for Retroperitoneal Sarcomas
Massachusetts General Hospital
NCT01659203
Proton-Spatially Fractionated Radiotherapy and Standard Radiation Therapy for the Treatment of Newly Diagnosed Retroperitoneal Soft Tissue Sarcoma
Northwestern University
NCT06327477
Evaluation of Abemaciclib and Radiation Therapy Before Surgery for the Treatment of High-Risk Adipocytic Retroperitoneal Sarcoma
University of Washington
NCT06025747
Short Course Radiation Treatment for Patients With Primary or Locally Recurrent Retroperitoneal Sarcoma Prior to Surgery
Brigham and Women's Hospital
NCT06812052
Repeat or Single Quadratus Lumborum Block for the Reduction of Opioid Prescriptions After Surgery in Retroperitoneal Sarcoma Patients ("RESQU-SARC" Trial)
M.D. Anderson Cancer Center
NCT04189783
Phase Distribution
| Phase | Trial count |
|---|---|
| Phase 1 | 4 |
| Phase 2 | 1 |
| Phase 3 | 1 |
Top Sponsors
Source: ClinicalTrials.gov, National Library of Medicine. Data is informational only.
Reading the Retroperitoneal Sarcoma Trial Landscape
ClinicalTrials.gov lists 7 US studies indexed under Retroperitoneal Sarcoma, and 6 of those are currently open to recruitment — roughly 86% of the total volume on the registry. That ratio is a useful proxy for activity level: a high share of recruiting studies often signals that research interest is current and that new enrollment opportunities are appearing, while a low share typically means the field is dominated by completed or follow-up work where most participant spots have already been filled. These counts reflect the public registry only and include studies at every stage of design, so they should be read as an index of research attention rather than as a measure of treatment availability.
The phase distribution for Retroperitoneal Sarcoma shows 1 late-stage studies (Phase 3 and Phase 4 combined) alongside 5 earlier-phase entries (Phase 1 through Phase 2). Phase 1 and Phase 2 studies focus on early safety signals, dosing, and preliminary effect, while Phase 3 studies are typically the larger efficacy and safety trials submitted toward regulatory review, and Phase 4 studies follow approved interventions in real-world use. A condition weighted toward later phases often reflects a mature research pipeline with several interventions already close to or past approval, whereas a heavier early-phase tilt suggests the field is still exploring new mechanisms and candidate approaches.
Top sponsor activity for Retroperitoneal Sarcoma is led by Fondazione IRCCS Istituto Nazionale dei Tumori, Milano with 1 indexed trial, alongside 6 other organizations in the top contributor list. The list on this page surfaces up to 7 of the most relevant recent and active entries, ordered with recruiting studies first so practical options are visible. All figures are derived from the public ClinicalTrials.gov dataset maintained by the National Library of Medicine and are reproduced here for reference. Inclusion of a trial, sponsor, or intervention on this page is neither an endorsement nor a recommendation — eligibility, protocol changes, and site-level status can shift frequently, so always verify current details on ClinicalTrials.gov and consult a qualified healthcare provider before acting on anything you see here.
Frequently Asked Questions
How many clinical trials are there for Retroperitoneal Sarcoma?
PlainTrial tracks 7 US clinical trials for Retroperitoneal Sarcoma, of which 6 are currently recruiting participants. Data sourced from ClinicalTrials.gov.
How do I find a recruiting trial for Retroperitoneal Sarcoma?
Use the trial list above filtered by "Recruiting" status, or visit our trial finder at /recruiting to search by condition and state. Always discuss trial participation with your healthcare provider before enrolling.
Is this data current?
Data is sourced from ClinicalTrials.gov and reflects our most recent data pull. Trial status may have changed since then. Always verify current information at ClinicalTrials.gov before making decisions about participation.
Related
Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from ClinicalTrials.gov (National Library of Medicine). Consult a qualified professional before making decisions based on this data.
Read our methodology — how this data is sourced, computed, and verified.
Source: ClinicalTrials.gov (NIH/NLM) ClinicalTrials.gov AACT registry · 2026 Trial counts and statuses sourced from ClinicalTrials.gov. Sponsor counts include both industry and federal/academic sponsors.