NCT04244708

The Effect of Chemoradiotherapy in Patients With Refractory Pituitary Adenomas

Radiotherapy Plus Concomitant Temozolomide for Refractory Pituitary Adenomas，A Randomized，Double-blind, Placebo-controlled Phase II Trial

• Status: Unknown
• Phase: Phase 2 / Phase 3
• Study type: Interventional
• Enrollment: 150 (estimated)
• Sponsor: Peking Union Medical College Hospital · Academic / Other
• Sex: All
• Age: 18 Years – 80 Years
• Healthy volunteers: Not accepted

Summary

The purpose of this study was to determine whether radiotherapy combined with Temozolomide is more effective than radiotherapy alone in the treatment of patients with refractory pituitary adenomas. The Basic treatment was Radiotherapy over a period of six weeks, for a total dose of 54 Gy. The150 participants were randomized to use either radiotherapy plus Temozolomide (75 mg per square meter of body-surface area per day, 7 days per week from the first to the last day of radiotherapy), or radiotherapy plus placebo for 6 weeks. After a 4-week break, followed by six cycles of placebo or adjuvant temozolomide (150 to 200 mg per square meter for 5 days during each 28-day cycle). The primary end point was Objective Response rate, the second end point was PFS. Greater response was anticipated in patients treated with Temozolomide+ radiotherapy than radiotherapy alone.

Detailed description

The purpose of this study was to determine whether radiotherapy combined with Temozolomide is more effective than radiotherapy alone in the treatment of patients with refractory pituitary adenomas. The Basic treatment was Radiotherapy, which is consisted of fractionated focal irradiation at a dose of 2 Gy per fraction given once daily five days per week (Monday through Friday) over a period of six weeks, for a total dose of 54 Gy. The150 participants were randomized to use either radiotherapy plus Temozolomide (75 mg per square meter of body-surface area per day, 7 days per week from the first to the last day of radiotherapy), or radiotherapy plus placebo for 6 weeks. After a 4-week break, patients were then to receive up to six cycles of adjuvant temozolomide or placebo according to the standard 5-day schedule every 28 days. The dose was 150 mg per square meter for the first cycle and was increased to 200 mg per square meter beginning with the second cycle, so long as there were no hematologic toxic effects followed by six cycles of placebo or adjuvant temozolomide (150 to 200 mg per square meter for 5 days during each 28-day cycle). The primary end point was Objective Response rate, the second end point was PFS. Greater response was anticipated in patients treated with Temozolomide+ radiotherapy than radiotherapy alone.

Conditions

• Pituitary Adenomas

Interventions

Type	Name	Description
DRUG	Radiotherapy plus temozolomide	undergoing fractionated radiotherapy at a dose of 2 Gy per fraction given once daily five days per week (Monday through Friday) over a period of six weeks, for a total dose of 54 Gy, plus continuous daily temozolomide (75 mg per square meter of body-surface area per day, 7 days per week from the first to the last day of radiotherapy), followed by six cycles of adjuvant temozolomide (150 to 200 mg per square meter for 5 days during each 28-day cycle).
OTHER	Radiotherapy plus placebo	undergoing fractionated radiotherapy at a dose of 2 Gy per fraction given once daily five days per week (Monday through Friday) over a period of six weeks, for a total dose of 54 Gy, plus placebo

Timeline

• Start date: 2020-02-10
• Primary completion: 2022-12-01
• Completion: 2023-12-01
• First posted: 2020-01-28
• Last updated: 2020-01-28