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

The recruitment status of this study is unknown because the information has not been verified recently.
Verified June 2011 by Helsinki University.
Recruitment status was  Recruiting
Information provided by:
Helsinki University
ClinicalTrials.gov Identifier:
First received: August 13, 2007
Last updated: June 24, 2011
Last verified: June 2011

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.

Condition Intervention Phase
Radiation: Radiation therapy (external beam photons)
Phase 1
Phase 2

Study Type: Interventional
Study Design: Allocation: Non-Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: Radiation Therapy as Palliative Treatment of GIST Progressing During or After Tyrosine Kinase Inhibitor Therapy: A Prospective Study

Resource links provided by NLM:

Further study details as provided by Helsinki University:

Primary Outcome Measures:
  • Target tumor response rate [ Time Frame: 6 to 12 weeks ] [ Designated as safety issue: No ]

Secondary Outcome Measures:
  • Time to progression of irradiated lesions [ Time Frame: 6 months ] [ Designated as safety issue: No ]
  • Time to progression of GIST [ Time Frame: 6 months ] [ Designated as safety issue: No ]
  • Control of GIST-related symptoms [ Time Frame: 6 months ] [ Designated as safety issue: No ]
  • Adverse effects of radiation therapy [ Time Frame: 6 months ] [ Designated as safety issue: Yes ]

Estimated Enrollment: 25
Study Start Date: August 2007
Estimated Study Completion Date: August 2013
Estimated Primary Completion Date: June 2012 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
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 Name: Radiotherapy, fractionated radiation therapy

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.


Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No

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.
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT00515931

Contact: Heikki Joensuu, M.D., Ph.D. 947173208 ext 358 heikki.joensuu@hus.fi

Helsinki University Central Hospital Recruiting
Helsinki, Finland, FIN-00029
Contact: Heikki Joensuu, M.D., Ph.D.    947173208 ext 358    heikki.joensuu@hus.fi   
Principal Investigator: Heikki Joensuu, M.D., Ph.D.         
Sponsors and Collaborators
Helsinki University
Principal Investigator: Heikki Joensuu, M.D., Ph.D. Department of Oncology, Helsinki University Central Hospital
  More Information

No publications provided

Responsible Party: Heikki Joensuu, MD, Department of Oncology, Helsinki University Central Hospital
ClinicalTrials.gov Identifier: NCT00515931     History of Changes
Other Study ID Numbers: GIST-RT-2007
Study First Received: August 13, 2007
Last Updated: June 24, 2011
Health Authority: Finland: Ministry of Social Affairs and Health

Keywords provided by Helsinki University:
Gastrointestinal stromal tumor
Radiation therapy

Additional relevant MeSH terms:
Neoplasms, Connective and Soft Tissue
Neoplasms by Histologic Type

ClinicalTrials.gov processed this record on September 18, 2014