Radiation Therapy as Palliative Treatment of GIST (GIST-RT)

October 6, 2014 updated by: Heikki Joensuu

Radiation Therapy as Palliative Treatment of GIST Progressing During or After Tyrosine Kinase Inhibitor Therapy: A Prospective Study

Gastrointestinal stromal tumors (GISTs) are generally considered resistant to radiation, but no prospective trials addressing efficacy and tolerability of radiation therapy have been carried out. Limited clinical experience suggests that selected GIST patients may benefit from palliative radiation therapy. The purpose of this prospective, non-randomized, multicenter study is to evaluate efficacy and safety of palliative radiation therapy in GIST patients who have progressive GIST during or after tyrosine kinase inhibitor therapy.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

Radiation therapy planning must be based on computerized tomography (CT). External beam radiation must be used. Both 3D and IMRT plans are acceptable. The cumulative radiation dose may range from 30 to 40 Gy as administered in 1.8 to 2.0 Gy fractions, 5 fractions per week. The dose is specified as defined by the ICRU (International Commission on Radiation Units and Measurements) report 50. Response is evaluated using CT 6 and 12 weeks after irradiation. Adverse effects are evaluated using the Common Terminology Criteria for Adverse Effects (CTCAE)version 3.

Study Type

Interventional

Enrollment (Actual)

25

Phase

  • Phase 2
  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Finland
      • Helsinki, Finland, FIN-00029
        • Helsinki University Central Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Histologically verified GIST.
  • Metastatic or locally advanced, inoperable disease.
  • Adequate systemic treatment has been administered.
  • One or more growing GIST metastasis present during of after TKI therapy.
  • The target lesion(s) is measurable.
  • A written informed consent

Exclusion Criteria:

  • WHO performance status is 4.
  • Estimated life-expectancy less than 3 months.
  • Radiation planning target volume greater than 3 dm3.
  • Unmeasurable target lesion. Bone and brain metastases are not accepted target lesions.
  • Radiation therapy cannot be delivered (e.g. active infection or restlessness.)
  • Pregnancy.
  • Systemic GIST treatment with unknown efficacy.
  • Copies of CT images cannot be sent for central review.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Non-Randomized
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Radiotherapy
GIST patients who have progressing metastases will be treated with radiotherapy.
Radiation: Radiation therapy (external beam photons)
A cumulative radiation dose of 30 to 40 Gy is administered in 1.8 to 2.0 Gy fractions, 5 fractions per week, to the target lesion(s).
Other Names:
  • Radiotherapy, fractionated radiation therapy

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Target tumor response rate
Time Frame: 6 to 12 weeks
6 to 12 weeks

Secondary Outcome Measures

Outcome Measure
Time Frame
Time to progression of irradiated lesions
Time Frame: 6 months
6 months
Time to progression of GIST
Time Frame: 6 months
6 months
Control of GIST-related symptoms
Time Frame: 6 months
6 months
Adverse effects of radiation therapy
Time Frame: 6 months
6 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Heikki Joensuu

Collaborators

Lund University
University of Lausanne Hospitals

Investigators

  • Principal Investigator: Heikki Joensuu, M.D., Ph.D., Department of Oncology, Helsinki University Central Hospital

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

August 1, 2007

Primary Completion (Actual)

February 1, 2014

Study Completion (Actual)

October 1, 2014

Study Registration Dates

First Submitted

August 13, 2007

First Submitted That Met QC Criteria

August 13, 2007

First Posted (Estimate)

August 14, 2007

Study Record Updates

Last Update Posted (Estimate)

October 7, 2014

Last Update Submitted That Met QC Criteria

October 6, 2014

Last Verified

October 1, 2014

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • GIST-RT-2007

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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