Evaluating Proton Therapy for Tumors Previously Treated with Radiation

Prospective Evaluation of Pencil Beam Scanning Proton Therapy for Previously Irradiated Tumors

Not applicable Interventional The New York Proton Center · NCT05313191

This study is testing a new type of radiation therapy called proton therapy to see if it can help people with tumors that have already been treated with radiation, while causing less harm to healthy tissues.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment1800 (estimated)
Ages18 Years and up
SexAll
SponsorThe New York Proton Center Academic / other
Drugs / interventionsradiation
Locations1 site (New York, New York)
Trial IDNCT05313191 on ClinicalTrials.gov

What this trial studies

This clinical trial investigates the use of Pencil Beam Scanning Proton Therapy for patients with tumors that have previously been treated with radiation. The study aims to explore different doses and scheduling of proton therapy to effectively target recurrent or new tumors while minimizing damage to surrounding healthy tissues. By utilizing proton therapy, which delivers radiation more precisely than traditional photon therapy, the trial seeks to improve treatment outcomes for patients with various types of cancer, including CNS, head and neck, GI, gynecologic, and prostate cancers.

Who should consider this trial

Good fit: Ideal candidates for this study are adults aged 18 and older who have a documented history of cancer and are in good physical condition.

Not a fit: Patients with non-malignant systemic diseases or those with a history of certain low-risk cancers may not benefit from this study.

Why it matters

Potential benefit: If successful, this approach could provide a more effective treatment option for patients with recurrent tumors while reducing the risk of long-term side effects.

How similar studies have performed: Other studies have shown promise in using proton therapy for cancer treatment, suggesting potential success for this novel approach.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Age 18 years
* Patient provides study specific informed consent prior to study entry.
* Documented history and physical exam within 90 days prior to registration.
* ECOG PS 0, 1, or 2 within 90 days prior to registration

Exclusion Criteria:

* Non malignant systemic disease that would preclude the patient from receiving study treatment or would prevent required follow up.
* Prior invasive non study malignancy unless disease free for ≥ 3 years

  * Non melanoma skin cancer, low risk prostate cancer, well differentiated thyroid cancers, in situ carcinomas of the oral cavity, cervix, and other organs, and tumors that are not thought to impact the life expectancy of the patient are permissible.
* History of active connective tissue disorder (i.e., systemic lupus erythematosus, scleroderma), dermatomyositis, xeroderma pigmentosum

Where this trial is running

New York, New York

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 CNS CancerHead and Neck CancerGI CancerGynecologic CancerProstate CancerThoracic CancerBreast CancerReirradiation
Last reviewed 2026-06-15 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.