Randomized Phase II Trial On Primary Chemotherapy With High-Dose Methotrexate And High-Dose Cytarabine With Or Without Thiotepa, And With Or Without Rituximab, Followed By Brain Irradiation Vs. High-Dose Chemotherapy Supported By Autologous Stem Cells Transplantation For Immunocompetent Patients With Newly Diagnosed Primary CNS Lymphoma
试验速览
- 阶段
- 2 期
- 状态
- 已完成
- 发起方
- 入组人数
- 126
- 试验地点
- 23
- 主要终点
- response rate after primary chemotherapy and 2 years failure free survival at second randomization
研究概览
简要总结
This is a multicenter open label randomized phase II trial.
Enrolled Primary Central Nervous System Lymphoma (PCNSL) patients will be stratified according to the IELSG score and randomized to receive one of the follows as primary chemotherapy:
- Arm A: Methotrexate (MTX) + Cytarabine (Ara-C)
- Arm B: MTX + Ara-C + rituximab
- Arm C: MTX + Ara-C + rituximab + thiotepa.
Chemotherapy will be administered every three weeks. The maximum number of chemotherapy induction courses will be 4. Patients in Stable Disease (SD) or better after two courses will receive two more courses of the same primary chemotherapy regimen. Stem-cells harvest will be performed in the three arms after the second course. After 4 courses response assessment will be performed.
Patients who will not achieve SD or better after the 4th course, as well as those who will experience Progressive Disease (PD) at any time and those who will not achieve a sufficient stem cell harvest, will receive Whole Brain Radiation Therapy (WBRT) 36-40 Gy +/- tumor bed boost of 9 Gy.
Patients who will achieve SD or better after the 4th course will be stratified according to objective response to primary chemotherapy and to primary chemotherapy regimen and randomly allocated to receive as consolidation therapy one of the follows:
- Arm D: WBRT 36 Gy +/- boost 9 Gy
- Arm E: Carmustine (BCNU) + Thiotepa + Autologous Peripheral Blood Stem Cell Transplant (APBSCT) Patients in Complete Response (CR) after WBRT or APBSCT will remain in follow-up. Patients who will not achieve a CR after WBRT will be managed according to physician's preferences. Patients who will not achieve a CR after APBSCT will be referred to WBRT.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 65 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Histological or cytological assessed diagnosis of non-Hodgkin's lymphoma.
- •Diagnostic sample obtained by stereotactic or surgical biopsy, Cerebrospinal Fluid (CSF) cytology examination or vitrectomy.
- •Disease exclusively localized into the central nervous system, CSF, cranial nerves or eyes.
- •At least one measurable lesion.
- •Previously untreated patients (previous or ongoing steroid therapy admitted).
- •Age 18-65 years (with ECOG Performance Status 0-3) or 66-70 (with ECOG Performance Status 0-2).
- •Adequate bone marrow, renal, cardiac, and hepatic function.
- •Sexually active patients of childbearing potential agreeing in implementing adequate contraceptive measures during study participation.
- •Absence of any familial, sociological or geographical condition potentially hampering compliance with the study protocol and follow-up schedule.
- •Patient-signed informed consent obtained before registration.
排除标准
- •Patients with lymphomatous lesions outside the CNS.
- •Patients with a previous non-Hodgkin lymphoma at any time.
- •Previous or concurrent malignancies with the exception of surgically cured carcinoma in-situ of the cervix, carcinoma of the skin or other cancers without evidence of disease at least from 5 years.
- •HBsAg and HCV positivity.
- •HIV infection, previous organ transplantation or other clinically evident form of immunodeficiency.
- •Concurrent treatment with other experimental drugs.
- •Concurrent Pregnancy or lactation.
- •Patients not agreeing to take adequate contraceptive measures during the study.
- •Symptomatic coronary artery disease, cardiac arrhythmias uncontrolled with medication or myocardial infarction within the last 6 months (New York Heart Association Class III or IV heart disease).
研究组 & 干预措施
MTX+ AraC
Arm A Methotrexate 3.5 g/m2 (0.5 g/m2 in 15 min. + 3 g/m2 in 3-hr infusion) d 1 Cytarabine 2 g/m2 1 hr infusion, twice a day (every 12 hs.) d 2 - 3
干预措施: Ara-C (Drug)
MTX+ AraC
Arm A Methotrexate 3.5 g/m2 (0.5 g/m2 in 15 min. + 3 g/m2 in 3-hr infusion) d 1 Cytarabine 2 g/m2 1 hr infusion, twice a day (every 12 hs.) d 2 - 3
干预措施: Methotrexate (Drug)
Ara-C +Rituximab
Arm B Rituximab 375 mg/m2 conventional infusion d -5 & 0 Methotrexate 3.5 g/m2 0.5 g/m2 in 15 min. + 3 g/m2 in 3-hr infusion d 1 Cytarabine 2 g/m2 1 hr infusion, twice a day (every 12 hs.) d 2 - 3
干预措施: Ara-C (Drug)
Ara-C +Rituximab
Arm B Rituximab 375 mg/m2 conventional infusion d -5 & 0 Methotrexate 3.5 g/m2 0.5 g/m2 in 15 min. + 3 g/m2 in 3-hr infusion d 1 Cytarabine 2 g/m2 1 hr infusion, twice a day (every 12 hs.) d 2 - 3
干预措施: Rituximab (Drug)
Ara-C + rituximab+thiotepa
Arm C Rituximab 375 mg/m2 conventional infusion d -5 & 0 Methotrexate 3.5 g/m2 0.5 g/m2 in 15 min. + 3 g/m2 in 3-hr infusion d 1 Cytarabine 2 g/m2 1 hr infusion, twice a day (every 12 hs.) d 2 - 3 Thiotepa 30 mg/m2 30 min. Infusion d 4
干预措施: Ara-C (Drug)
Ara-C + rituximab+thiotepa
Arm C Rituximab 375 mg/m2 conventional infusion d -5 & 0 Methotrexate 3.5 g/m2 0.5 g/m2 in 15 min. + 3 g/m2 in 3-hr infusion d 1 Cytarabine 2 g/m2 1 hr infusion, twice a day (every 12 hs.) d 2 - 3 Thiotepa 30 mg/m2 30 min. Infusion d 4
干预措施: Rituximab (Drug)
Ara-C + rituximab+thiotepa
Arm C Rituximab 375 mg/m2 conventional infusion d -5 & 0 Methotrexate 3.5 g/m2 0.5 g/m2 in 15 min. + 3 g/m2 in 3-hr infusion d 1 Cytarabine 2 g/m2 1 hr infusion, twice a day (every 12 hs.) d 2 - 3 Thiotepa 30 mg/m2 30 min. Infusion d 4
干预措施: Thiotepa (Drug)
WBRT 36 Gy +/- boost 9 Gy
ARM D: WBRT with 36 Gy in the case of CR to primary chemotherapy or the same WBRT dose followed by a tumor-bed boost of 9 Gy with 1-2 cm of margin surrounding enhanced residual lesion (total tumor-bed dose 45 Gy) in patients who achieved a PR or SD after primary chemotherapy. Photons of 4-10 Mev, 180 cGy per day, 5 weekly fractions.
干预措施: radiotherapy (Radiation)
BCNU + Thiotepa + APBSCT
Arm E BCNU 400 mg/m2 in 500 ml saline sol 1-hr inf. day -6 Thiotepa 5 mg/kg in 250 ml saline sol 2-hr inf. every 12 hrs days -5 & -4 Reinfusion of PBSC ≥5 x 106 CD34+ cells/kg day 0
干预措施: Thiotepa (Drug)
BCNU + Thiotepa + APBSCT
Arm E BCNU 400 mg/m2 in 500 ml saline sol 1-hr inf. day -6 Thiotepa 5 mg/kg in 250 ml saline sol 2-hr inf. every 12 hrs days -5 & -4 Reinfusion of PBSC ≥5 x 106 CD34+ cells/kg day 0
干预措施: BCNU (Drug)
BCNU + Thiotepa + APBSCT
Arm E BCNU 400 mg/m2 in 500 ml saline sol 1-hr inf. day -6 Thiotepa 5 mg/kg in 250 ml saline sol 2-hr inf. every 12 hrs days -5 & -4 Reinfusion of PBSC ≥5 x 106 CD34+ cells/kg day 0
干预措施: APBSCT (Other)
结局指标
主要结局
response rate after primary chemotherapy and 2 years failure free survival at second randomization
时间窗: 3 months, 2 years
次要结局
- safety, as acute and long-term toxicity(Throughout all the active treatment period)
- overall survival(From entry onto trial until death for any cause)