Phase III Comparison of Thoracic Radiotherapy Regimens in Patients With Limited Small Cell Lung Cancer Also Receiving Cisplatin and Etoposide
Location:
Rochester, Minn.
Trial status:
Open for Enrollment
Why is this study being done?
OBJECTIVES:
Primary
- To determine whether administering high-dose thoracic radiotherapy, 70 Gy (2 Gy once daily over 7 weeks) or 61.2 Gy (1.8 Gy once daily for 16 days followed by 1.8 Gy twice daily for 9 days), will improve median and 2-year survival compared with 45 Gy (1.5 Gy twice daily over 3 weeks) in patients with limited-stage small cell lung cancer.
Secondary
- To compare treatment-related toxic effects of thoracic radiotherapy regimens in patients with limited-stage small cell lung cancer.
- To compare response rates, failure-free survival, and toxicity of thoracic radiotherapy regimens in patients with limited-stage small cell lung cancer.
- To compare rates of local relapse, distant metastases, and brain metastases with these regimens.
- To describe the patterns of use of thoracic intensity-modulated radiotherapy (IMRT) in patients with limited-stage small cell lung cancer.
OUTLINE: This is a 2-part, multicenter, randomized study. Patients are stratified according to gender, weight loss 6 months prior to study entry (≤ 5% of body weight vs > 5% of body weight), ECOG performance status (0 vs 1 vs 2), radiotherapy technique (intensity-modulated radiotherapy vs 3-dimensional conformal radiotherapy), and radiotherapy start time (at first course of protocol chemotherapy, after one course of prior non-protocol chemotherapy vs at first course of protocol chemotherapy, without prior non-protocol chemotherapy vs at second course of protocol chemotherapy, without prior non-protocol chemotherapy).
- Part 1: Patients are randomized to 1 of 3 treatment arms.
- Arm I: Patients undergo standard-dose (45 Gy given in 30 treatments) thoracic radiotherapy twice daily, 5 days a week, for 3 weeks. Patients also receive cisplatin IV on day 1 and etoposide IV on days 1, 2, and 3.
- Arm II: Patients undergo higher-dose (70 Gy given in 35 treatments) thoracic radiotherapy once daily, 5 days a week, for 7 weeks. Patients also receive cisplatin and etoposide as in arm I.
- Arm III: (discontinued as of 03/10/13) Patients undergo higher-dose (61.2 Gy given in 34 treatments) thoracic radiotherapy once daily, 5 days a week, during the initial 16 days (approximately 3 weeks) of treatment and then twice daily, 5 days a week, for the final 9 days (approximately 2 weeks) of treatment. Patients also receive cisplatin and etoposide as in arm I.
In all arms, treatment with cisplatin and etoposide repeats every 21 days for 4 courses in the absence of disease progression or unacceptable toxicity.
- Part 2: An interim analysis was conducted after accrual of 30 patients per arm and one experimental arm based upon a comparison of treatment-related toxicity was selected. The most toxic experimental arm was discontinued, and the trial continues comparing standard therapy (arm I) to the selected experimental regimen (arm II) as described in part 1.
Prophylactic radiotherapy: Within 3-6 weeks after completion of chemotherapy, patients with responding disease are eligible to undergo prophylactic radiotherapy to the brain once a day, 5 days a week, for 2 weeks.
After completion of study treatment, patients are followed up at least every 3 months for 2 years, every 6 months for 3 years, and then annually for 5 years or until disease progression. At disease progression, patients are followed up every 6 months.
NCT ID:
NCT00632853
IRB Number:
08-004290
Who can I contact for additional information about this study?
Scottsdale: Clinical Trials Office - All Mayo Clinic Locations 507-538-7623