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Optimization of second-line therapy with aflibercept, irinotecan (day1 or day 1,3), 5fluorouracile and folinic acid in patients with metastatic colorectal cancer. A randomized Phase III study.
Full description
Background - Rationale Aflibercept The addition of aflibercept to the standard FOLFIRI regimen as second-line therapy was evaluated in a large phase III study (EFC10262-VELOUR). This combination significantly improved both PFS (4.7 to 6.9 months, HR=0.76; P=<0.001) and OS (12.1 to 13.5 months, HR=0.82; P=0.003). In the evaluable population (86.5%), the tumor response rate was also improved when adding aflibercept (ORR=19.8% [16.4-23.2]) to the FOLFIRI regimen (ORR=11.1% [8.5-13.8]).
Irinotecan The combination of aflibercept with FOLFIRI3, an optimized irinotecan-based regimen, was evaluated in 65 patients in a French multicentric retrospective cohort. (Carola C et al, WJCO 2018) In the cohort of irinotecan-naïve patients (n=30), the objective response rate was 43.3%, and the disease control rate 76.7%. Median PFS and OS were 11.3 months (95% CI 6.1-29.0) and 17.0 months (95% CI 13.0-17.3). The most common (>5%) grade 3-4 adverse events were diarrhea (37.9%), neutropenia (14.3%), stomatitis and anemia (10.4%), hypertension (6.7%).
In the cohort of patients previously treated with irinotecan (n=35), the objective response rate was 34.3%, and the disease control rate 60.0%. Median PFS and OS were 5.7 months (95% CI 3.9-10.4) and 14.3 months (95% CI 12.8-19.5).
Table. FOLFIRI-aflibercept vs. FOLFIRI3-aflibercept: a cross-trial comparison FOLFIRI-aflibercept (VELOUR) FOLFIRI3-aflibercept (Irinotecan-naïve) N = 612 N = 30 Efficacy RR, % 19.3 vs 43.3 PFS, months 6.9 vs 11.3 OS, months 13.5 vs 17.0 Grade 3-4 AEs, % Any 83.4 vs 56.7 Neutropenia 36.7 vs 14.3 Diarrhea 19.3 vs 37.9 Mucositis 13.8 vs 10.4 Hypertension 19.3 vs 6.9 Discontinuation, % Progression 49.8 vs 36.7 Adverse event 26.6 vs 46.7
Study Objectives
Primary:
•To compare once (day 1) or twice (day 1, day 3) administration of irinotecan in combination with 5-fluorouracile and aflibercept as second-line therapy in patients with metastatic colorectal cancer in terms of overall response rate (ORR)
Secondary:
Exploratory:
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Inclusion criteria
Provision of signed and dated informed consent and stated willingness to comply with all study procedures and availability for the duration of the study, Signed, written Informed Consent Form (ICF),
Willing and able to comply with the protocol,
Age 18-75 years,
Eastern Cooperative Oncology Group Performance Status (ECOG PS) of 0-1,
Life expectancy ≥ 3 months,
Histologically proven carcinoma of colon and/or rectum,
Confirmed unresectable metastatic disease,
At least one measurable and/or evaluable tumor metastasis on CT-scan or MRI per RECIST criteria version 1.1,
Prior oxaliplatin-based first-line therapy for metastatic disease (the use of prior bevacizumab or anti-EGFR mabs is allowed but not mandatory) - Less than 6 months from completion of any prior oxaliplatin-based adjuvant therapy can be considered as first-line therapy. Prior use of irinotecan in combination with oxaliplatin and 5FU as first-line therapy is allowed if the interval between the last administration of irinotecan and disease progression is at least 6 months (ie, irinotecan-free interval ≥6 months).
Negative urine and/or serum pregnancy test within 7 days before inclusion if female subject is of childbearing potential,
Clinical laboratory parameters adequate as follows:
For women of childbearing potential and for men, agreement to use an effective contraceptive method from the time of screening throughout the study until 6 months after administration of the last dose of any study medication. Highly effective contraceptive method consist of prior sterilization, inter-uterine device, intrauterine hormone-releasing system, oral or injectable contraceptives barrier methods, and/or true sexual abstinence),
Affiliation to French health care system.
Exclusion criteria
Primary purpose
Allocation
Interventional model
Masking
202 participants in 2 patient groups
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Central trial contact
Benoist CHIBAUDEL, MD
Data sourced from clinicaltrials.gov
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