Pre-operative proton therapy for soft tissue sarcoma

PROspective Phase II Trial of Pre-operative Hypofractionated protoN Therapy for Extremity and Truncal Soft Tissue sarcOma

Not applicable Interventional Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins · NCT05917301

This study tests if a special type of radiation therapy given before surgery can help people with soft tissue sarcomas in their arms or legs heal better and have a better quality of life afterward.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment40 (estimated)
Ages18 Years and up
SexAll
SponsorSidney Kimmel Comprehensive Cancer Center at Johns Hopkins Academic / other
Drugs / interventionschemotherapy, immunotherapy, radiation
Locations1 site (Washington D.C., District of Columbia)
Trial IDNCT05917301 on ClinicalTrials.gov

What this trial studies

This study examines the safety and effectiveness of hypofractionated proton therapy for patients with extremity and trunk soft tissue sarcomas before they undergo surgery. Participants will receive five fractions of proton therapy, and the study will assess wound complications and functional outcomes, including quality of life, through questionnaires over a two-year period post-surgery. Standard care follow-ups will also be conducted to monitor patient progress.

Who should consider this trial

Good fit: Ideal candidates are adults aged 18 and older with primary or locally recurrent extremity or truncal soft tissue sarcoma.

Not a fit: Patients with a history of prior local radiation therapy or those requiring systemic therapy may not benefit from this study.

Why it matters

Potential benefit: If successful, this approach could improve surgical outcomes and quality of life for patients with soft tissue sarcoma.

How similar studies have performed: Other studies have shown promise with proton therapy for various cancers, suggesting potential success for this approach in treating soft tissue sarcoma.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Adult patients (≥18 years of age)
* Patients with primary or locally recurrent extremity or truncal soft tissue sarcoma
* WHO/ECOG status ≤2

Exclusion Criteria:

* History of prior local radiation therapy
* Inability to tolerate treatment position for duration of simulation or treatment
* Tumor originating in retroperitoneal location
* Patients planned for systemic therapy including chemotherapy, targeted agents, and immunotherapy
* Co-existing malignancy or treated malignancy in the last 2 years expected to limit life expectancy; does not include completely resected cutaneous basal cell carcinoma, squamous cell carcinoma, in situ breast or cervical malignancies, or other pathologies at the discretion of the investigators.
* Confirmed pregnancy.

Where this trial is running

Washington D.C., District of Columbia

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 Soft Tissue Sarcomaproton therapysoft tissue sarcomahypofractionated
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.