drugset / Trial / NCT04689347

5FU/LV, Irinotecan, Temozolomide and Bevacizumab for MGMT Silenced, Microsatellite Stable Metastatic Colorectal Cancer.

NCT04689347

NaSequentialOpen-labelTreatment

Summary

An upfront-intensified treatment combining all the three active cytotoxic agents in metastatic colorectal cancer (mCRC) including fluoropyrimidines, oxaliplatin, irinotecan (FOLFOXIRI) plus antiangiogenic blockade with bevacizumab significantly improved survival. No biomarkers are available for predicting sensitivity/resistance to single chemotherapeutic drugs, the simultaneous delivery of all active chemotherapeutic agents might overcome resistance to single drugs. Temozolomide has modest but non-negligible activity (about 10%) in chemo-refractory patients with MGMT methylated mCRC. The response rate to temozolomide-based therapy in pretreated patients is increased to up to 20% when restricting the focus on those with MGMT IHC-negative/MGMT methylated and MSS cancers. Clinical and preclinical synergy has been reported for combination of temozolomide with irinotecan and fluoropyrimidines. Temozolomide could be regarded as a "targeted" chemotherapy for patients with MSS and MGMT silenced tumors. In this subgroup of patients, an intensified triplet upfront regimen including temozolomide, fluoropyrimidines, irinotecan, associated with bevacizumab, could be a novel combination in molecularly super-selected mCRC patients. Moving from this, the investigators designed this open-label, monocentric, phase 1b study evaluating the safety of the combination regimen 5-fluorouracil, leucovorin, irinotecan, temozolomide and bevacizumab in patients with MGMT silenced and MSS mCRC. The study will consist in a dose-escalation assessment of the safety of the treatment in subjects with previously untreated MGMT silenced, MSS mCRC. A 3 + 3 design will be used to assess the maximum tolerated dose (MTD) or maximum tested dose of the combination FLIRT-bevacizumab. Upon completion of the phase 1b part, the phase 2 part of the study will start.

Timeline

Start
2021-01-01
Primary completion
2026-04-30
Completion
2027-01-31

Publications

Drugs

EvaluationDrugModalityDoseRoute
Subject Temozolomide Small molecule 75 mg/m2 Oral
Subject Temozolomide Small molecule 100 mg/m2 Oral
Subject Temozolomide Small molecule 125 mg/m2 Oral
Subject Temozolomide Small molecule 150 mg/m2 Oral
Background Bevacizumab Monoclonal antibody 5 mg/kg Intravenous
Background Irinotecan Small molecule 165 mg/m2 Intravenous
Background Leucovorin Small molecule 200 mg/m2 Intravenous
Background fluorouracil Small molecule 3200 mg/m2 Intravenous

Indications