FOLFOXIRI Plus Bevacizumab With or Without Atezolizumab as 1st Line Treatment of pMMR and IS IC-High Metastatic Colorectal Cancer Patients.

NCT ID: NCT06733038

Last Updated: 2025-12-08

Basic Information

• Recruitment Status: RECRUITING
• Clinical Phase: PHASE3
• Total Enrollment: 238 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2024-11-15
• Study Completion Date: 2029-04-01

Brief Summary

The aim of this study is to evaluate the efficacy of the addition of Atezolizumab to FOLFOXIRI plus bevacizumab as first line treatment of patients with pMMR and Immunoscore IC-high metastatic colorectal cancer in terms of Progression Free Survival (PFS).

Detailed Description

This is a prospective, open-label, multicenter phase III randomized trial in which patients with initially unresectable, previously untreated pMMR and Immunoscore IC-high mCRC will be randomized in a 1:1 ratio to receive induction treatment with FOLFOXIRI plus bevacizumab up to 8 cycles followed by maintenance with 5-FU/LV plus bevacizumab until disease progression, unacceptable toxicity or patient's refusal (arm A) or FOLFOXIRI plus bevacizumab plus atezolizumab up to 8 cycles followed by maintenance with 5-FU/LV plus bevacizumab plus atezolizumab until disease progression, unacceptable toxicity or patient's refusal (arm B).

Stratification factors will be ECOG Performance Status (0 versus 1, 2), primary tumour location (right versus left/rectum) and liver metastases (yes versus no).

The second- and subsequent lines of treatment will be at investigators' choice.

Conditions

Colorectal Cancer

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: NONE

Study Groups

Arm A - FOLFOXIRI plus bevacizumab

Every 2 weeks for a maximum of 8 cycles:

• Bevacizumab 5 mg/kg iv 90 minutes at cycle 1 (if well tolerated, it is administered over 60 minutes at cycle 2, and over 30 minutes at cycle 3) day 1, followed by
• Irinotecan 165 mg/sqm iv over 60 minutes day 1, followed by
• Oxaliplatin 85 mg/sqm iv over 2 hours day 1, in two-way with
• L-Leucovorin 200 mg/sqm iv over 2 hours day 1, followed by
• 5-fluorouracil 3200 mg/sqm 48 h-continuous infusion, starting on day 1.

If no progression occurs during FOLFOXIRI plus bev, patients will receive maintenance 5-FU/LV plus bev at the same dose used at the last cycle of the induction treatment. 5-FU/LV plus bev will be repeated biweekly until disease progression, unacceptable toxicity or patient's refusal.

Group Type: ACTIVE_COMPARATOR

Bevacizumab

Intervention Type: DRUG

5 mg/kg iv over 90 minutes at cycle 1 (if well tolerated, it is administered over 60 minutes at cycle 2, and over 30 minutes at cycle 3) day 1

Irinotecan (CPT-11)

Intervention Type: DRUG

165 mg/sqm iv over 60 minutes day 1

Oxaliplatin

Intervention Type: DRUG

85 mg/sqm iv over 2 hours day 1

Leucovorin

Intervention Type: DRUG

200 mg/sqm iv over 2 hours day 1

Fluorouracil (5-FU)

Intervention Type: DRUG

3200 mg/sqm 48 h-continuous infusion, starting on day 1

Arm B - FOLFOXIRI plus bevacizumab plus atezolizumab

Every 2 weeks for a maximum of 8 cycles:

• Atezolizumab 840 mg iv over 30 minutes (60 minutes at first infusion) day 1 followed by
• Bevacizumab 5 mg/kg iv over 90 minutes at cycle 1 (if well tolerated, it is administered over 60 minutes at cycle 2, and over 30 minutes at cycle 3) day 1 followed by
• Irinotecan 165 mg/sqm iv over 60 minutes day 1, followed by
• Oxaliplatin 85 mg/sqm iv over 2 hours day 1, in two-way with
• L-Leucovorin 200 mg/sqm iv over 2 hours day 1, followed by
• 5-fluorouracil 3200 mg/sqm 48 h-continuous infusion, starting on day 1.

If no progression occurs during FOLFOXIRI plus bev plus atezolizumab, patients will receive maintenance 5-FU/LV plus bev plus atezolizumab at the same dose used at the last cycle of the induction treatment. 5-FU/LV plus bev plus atezolizumab will be repeated biweekly until disease progression, unacceptable toxicity or patient's refusal.

Group Type: EXPERIMENTAL

Atezolizumab

Intervention Type: DRUG

840 mg iv over 30 minutes (60 minutes at first infusion) day 1

Bevacizumab

Intervention Type: DRUG

5 mg/kg iv over 90 minutes at cycle 1 (if well tolerated, it is administered over 60 minutes at cycle 2, and over 30 minutes at cycle 3) day 1

Irinotecan (CPT-11)

Intervention Type: DRUG

165 mg/sqm iv over 60 minutes day 1

Oxaliplatin

Intervention Type: DRUG

85 mg/sqm iv over 2 hours day 1

Leucovorin

Intervention Type: DRUG

200 mg/sqm iv over 2 hours day 1

Fluorouracil (5-FU)

Intervention Type: DRUG

3200 mg/sqm 48 h-continuous infusion, starting on day 1

Interventions

Atezolizumab

840 mg iv over 30 minutes (60 minutes at first infusion) day 1

Intervention Type: DRUG

Bevacizumab

5 mg/kg iv over 90 minutes at cycle 1 (if well tolerated, it is administered over 60 minutes at cycle 2, and over 30 minutes at cycle 3) day 1

Intervention Type: DRUG

Irinotecan (CPT-11)

165 mg/sqm iv over 60 minutes day 1

Intervention Type: DRUG

Oxaliplatin

85 mg/sqm iv over 2 hours day 1

Intervention Type: DRUG

Leucovorin

200 mg/sqm iv over 2 hours day 1

Intervention Type: DRUG

Fluorouracil (5-FU)

3200 mg/sqm 48 h-continuous infusion, starting on day 1

Intervention Type: DRUG

Eligibility Criteria

Inclusion Criteria

• Histologically proven diagnosis of colorectal cancer;
• Initially unresectable metastatic colorectal cancer not previously treated with chemotherapy for metastatic disease;
• Proficient mismatch repair (pMMR) status in tumour tissue (primary or metastatic), as determined by a local laboratory assay in a CLIA- or similarly certified;
• Immunoscore IC-high status in tumour tissue (primary or metastatic), as determined by a sponsor-defined central laboratory (HEGP, AP-HP, INSERM, France).
• At least one measurable lesion according to RECIST criteria (version 1.1);
• Availability of adequate tumour specimen (primary or metastatic);
• Male or female of 18-75 years of age;
• ECOG PS ≤ 2 if aged < 71 years, ECOG PS = 0 if aged 71-75 years;
• Life expectancy of at least 12 weeks;
• Previous adjuvant chemotherapy allowed only if with fluoropyrimidine monotherapy and more than 6 months elapsed between the end of adjuvant and first relapse;
• Neutrophils >1.5 x 109/L, Platelets >100 x 109/L, Hb >9 g/dl;
• Total bilirubin ≤1.5 times the upper-normal limits (UNL) of the normal values and AST (SGOT) and/or ALT (SGPT) <2.5 x UNL (or <5 x UNL in case of liver metastases) alkaline phosphatase <2.5 x UNL (or <5 x UNL in case of liver metastases);
• Creatinine clearance ≥50 mL/min or serum creatinine ≤1.5 x UNL;
• INR or aPTT ≤1.5 x ULN. This applies only to patients who are not receiving therapeutic anticoagulation;
• Urine dipstick of proteinuria <2+. Patients discovered to have 2+ proteinuria on dipstick urinalysis at baseline, should undergo a 24-hour urine collection and must demonstrate ≤1 g of protein/24 h;
• Women of childbearing potential must have a negative blood pregnancy test at the baseline visit. For this trial, women of childbearing potential are defined as all women following menarche and until becoming post-menopausal unless permanently sterile. Permanent sterilization methods include hysterectomy, bilateral salpingectomy and bilateral oophorectomy. A postmenopausal state is defined as no menses for 12 months without an alternative medical cause. A high follicle stimulating hormone (FSH) level in the postmenopausal range may be used to confirm a post-menopausal state in women not using hormonal contraception or hormonal replacement therapy. However, in the absence of 12 months of amenorrhea, a single FSH measurement is insufficient;
• Male subjects with female partners of childbearing potential and female subjects of childbearing potential must, therefore, be willing to use adequate contraception as approved by the investigator (barrier contraceptive measure or oral contraception) and outlined in "Section 6.5 - Contraception", starting with the first dose of study therapy through 6 months after the last dose of bevacizumab and fluorouracil and within 5 months after the last dose of atezolizumab.
• Females of childbearing potential must have a negative blood pregnancy test at the baseline visit (i.e., performed maximum 7 days before the treatment start);
• Will and ability to comply with the protocol;
• Written informed consent to study procedures.

Exclusion Criteria

• Radiotherapy to any site within 4 weeks before the study;
• Previous adjuvant oxaliplatin-containing chemotherapy;
• Previous treatment with bevacizumab;
• Prior treatment with CD137 agonists, anti-CTLA4, anti-PD-1, or anti-PD-L1 therapeutic antibody or pathway-targeting agents;
• Complete dihydropyrimidine dehydrogenase (DPYD) deficiency (homozygous of the following DPYD polymorphisms: c1679GG, c1905+1AA, c2846TT);
• Untreated brain metastases or spinal cord compression or primary brain tumours;
• History or evidence upon physical examination of CNS disease unless adequately treated;
• History of haemoptysis ≥ 2 grade NCIC-CTG criteria within one month prior to screening;
• Active or untreated CNS metastases:
• Symptomatic peripheral neuropathy > 2 grade NCIC-CTG criteria;
• Serious, non-healing wound, ulcer, or bone fracture;
• Evidence of bleeding diathesis or coagulopathy;
• Uncontrolled hypertension (SBP>150 mmHg and/or DPB>100 mmHg), or prior history of hypertensive crisis, or hypertensive encephalopathy ;
• Clinically significant (i.e., active) cardiovascular disease for example cerebrovascular accidents (within 6 months prior to study enrollment), myocardial infarction (within 6 months prior to study enrollment), unstable angina, New York Heart Association (NYHA) grade II or greater congestive heart failure, serious cardiac arrhythmia requiring medication;
• Significant vascular disease (e.g. aortic aneurysm requiring surgical repair or recent arterial thrombosis) within 6 months of study enrolment;
• Active infection requiring antibiotics at the time of initiation of study treatment;
• Any previous venous thromboembolism ≥ NCI CTCAE Grade 4;
• History of abdominal fistula, GI perforation, intra-abdominal abscess or active GI bleeding within 6 months prior to the first study treatment;
• Current or recent (within 10 days prior to study treatment start) ongoing treatment with full-dose anticoagulants for therapeutic purposes.
• Chronic, daily treatment with high-dose aspirin (>325 mg/day);
• Treatment with any investigational drug within 30 days prior to enrollment or 2 investigational agent half-lives (whichever is longer);
• Other co-existing malignancies or malignancies diagnosed within the last 5 years with the exception of localized basal and squamous cell carcinoma or cervical cancer in situ;
• Major surgical procedure, open biopsy, or significant traumatic injury within 28 days prior to study treatment start, or anticipation of the need for major surgical procedure during the course of the study;
• Core biopsy or other minor surgical procedure, excluding placement of a vascular access device, within 7 days prior to initiation of study treatment;
• Lack of physical integrity of the upper gastrointestinal tract, malabsorption syndrome, or inability to take oral medication;
• Pregnant or lactating women. Women of childbearing potential with either a positive or no pregnancy test at baseline. Postmenopausal women must have been amenorrheic for at least 12 months to be considered of non-childbearing potential. Sexually active males and females (of childbearing potential) unwilling to practice contraception (barrier contraceptive measure or oral contraception) during the study and until 6 months after the last dose of bevacizumab, fluorouracil and within 5 months after the last dose of atezolizumab;
• History of autoimmune disease;
• History of idiopathic pulmonary fibrosis (including pneumonitis), drug-induced pneumonitis, organizing pneumonia (i.e., bronchiolitis obliterans, cryptogenic organizing pneumonia), or evidence of active pneumonitis on screening chest CT scan;
• Positive test for human immunodeficiency virus (HIV);
• Active hepatitis B (defined as having a positive hepatitis B surface antigen [HBsAg] test prior to randomization) or hepatitis C;
• Active tuberculosis;
• Prior allogenic bone marrow transplantation or solid organ transplant;
• Treatment with systemic corticosteroids or other systemic immunosuppressive medications (including but not limited to prednisone, dexamethasone, cyclophosphamide, azathioprine, methotrexate, thalidomide, and anti-tumour necrosis factor [TNF] agents) within 2 weeks prior to start of study treatment, or requirement for systemic immunosuppressive medications during the trial. The use of inhaled corticosteroids and mineralocorticoids (e.g., fludrocortisone) is allowed;
• Known hypersensitivity or allergy to Chinese hamster ovary cell products or any component of the atezolizumab formulation;
• Administration of a live, attenuated vaccine within 4 weeks prior to start of study treatment or anticipation that such a live attenuated vaccine will be required during the study;
• Treatment with systemic immunostimulatory agents (including but not limited to interferons or interleukin-2) within 4 weeks or five half-lives of the drug, whichever is longer, prior to start of study treatment; • If receiving a RANKL inhibitor (e.g. denosumab), unwilling to adopt alternative treatment such as (but not limited to) bisphosphonates, while receiving atezolizumab.

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 75 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Hoffmann-La Roche

INDUSTRY

Sponsor Role: collaborator

Gruppo Oncologico del Nord-Ovest

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Carlotta Antoniotti, MD, PhD

Role: PRINCIPAL_INVESTIGATOR

Department of Translational Research and New Technologies in Medicine and Surgery - University of Pisa

Locations

Fondazione Poliambulanza, Istituto Ospedaliero

Brescia, BS, Italy

Site Status: RECRUITING

Azienda Ospedaliero Universitaria Policlinico Rodolico - S. Marco

Catania, CT, Italy

Site Status: RECRUITING

Istituto Romagnolo per lo Studio dei Tumori Dino Amadori

Meldola, FC, Italy

Site Status: RECRUITING

Fondazione Casa Sollievo della Sofferenza

San Giovanni Rotondo, FG, Italy

Site Status: RECRUITING

AOU Careggi

Florence, FI, Italy

Site Status: RECRUITING

Azienda Ospedaliera Card. G. Panico

Tricase, LE, Italy

Site Status: RECRUITING

Azienda USL Toscana Nord Ovest

Livorno, LI, Italy

Site Status: RECRUITING

Ospedale San Luca

Lucca, LU, Italy

Site Status: RECRUITING

Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico

Milan, MI, Italy

Site Status: RECRUITING

Ospedale San Raffaele

Milan, MI, Italy

Site Status: RECRUITING

Fondazione IRCCS INT - Milano

Milan, MI, Italy

Site Status: RECRUITING

Azienda Ospedaliero Universitaria di Modena

Modena, MO, Italy

Site Status: RECRUITING

Istituto Oncologico Veneto Irccs

Padua, PD, Italy

Site Status: RECRUITING

IRCCS Centro di Riferimento Oncologico

Aviano, PN, Italy

Site Status: RECRUITING

Nuovo Ospedale di Prato S. Stefano

Prato, PO, Italy

Site Status: RECRUITING

Azienda USL della Romagna

Ravenna, RA, Italy

Site Status: RECRUITING

Fondazione Policlinico Universitario Agostino Gemelli IRCCS

Roma, RM, Italy

Site Status: RECRUITING

Azienda Sanitaria Universitaria Friuli Centrale

Udine, UD, Italy

Site Status: RECRUITING

ASL di Viterbo

Viterbo, VT, Italy

Site Status: RECRUITING

Azienda Ospedaliera Universitaria Luigi Vanvitelli

Naples, , Italy

Site Status: RECRUITING

IRCCS Istituto Nazionale Tumori "Fondazione Giovanni Pascale"

Napoli, , Italy

Site Status: RECRUITING

Azienda Usl di Piacenza

Piacenza, , Italy

Site Status: RECRUITING

U.O. Oncologia Medica 2 Universitaria - Azienda Ospedaliero-Universitaria Pisana Dipartimento di Ricerca Traslazionale e Nuove Tecnologie - University of Pisa

Pisa, , Italy

Site Status: RECRUITING

Policlinico Universitario Tor Vergata

Rome, , Italy

Site Status: RECRUITING

Countries

Italy

Central Contacts

Carlotta Antoniotti, MD, PhD

Role: CONTACT

carlotta.antoniotti@unipi.it

+39050992192

Laura Delliponti

Role: CONTACT

atezotribe2@gmail.com

+39050992192

Facility Contacts

Alberto Zaniboni, MD

Role: primary

alberto.zaniboni@poliambulanza.it

Laura Noto, DM

Role: primary

lauranoto1983@hotmail.it

Alessandro Passardi, MD

Role: primary

alessandro.passardi@irst.emr.it

Tiziana Pia Latiano, MD

Role: primary

t.latiano@operapadrepio.it

Lorenzo Antonuzzo, MD

Role: primary

lorenzo.antonuzzo@unifi.it

Emiliano Tamburini, MD

Role: primary

emilianotamburini@icloud.com

Samanta Cupini, MD

Role: primary

samanta.cupini@uslnordovest.toscana.it

Editta Baldini, MD

Role: primary

editta.baldini@uslnordovest.toscana.it

Michele Ghidini, MD

Role: primary

michele.ghidini@policlinico.mi.it

Monica Ronzoni, MD

Role: primary

ronzoni.monica@hsr.it

Filippo Pietrantonio, MD

Role: primary

Filippo.Pietrantonio@istitutotumori.mi.it

Fabio Gelsomino, MD

Role: primary

gelsomino.fabio@aou.mo.it

Sara Lonardi, MD

Role: primary

sara.lonardi@iov.veneto.it

Elena Ongaro

Role: primary

elena.ongaro@cro.it

Samantha Di Donato, MD

Role: primary

samantha.didonato@uslcentro.toscana.it

Stefano Tamberi, MD

Role: primary

stefano.tamberi@auslromagna.it

Lisa Salvatore, MD

Role: primary

lisa.salvatore@policlinicogemelli.it

Nicoletta Pella, MD

Role: primary

nicoletta.pella@asufc.sanita.fvg.it

Marta Schirripa, MD

Role: primary

marta.schirripa@asl.vt.it

Erika Martinelli, MD

Role: primary

erika.martinelli@unicampania.it

Antonio Avallone, MD

Role: primary

Role: backup

a.avallone@istitutotumori.na.it

Margherita Ratti, MD

Role: primary

m.ratti2@ausl.pc.it

Carlotta Antoniotti, MD, PhD

Role: primary

carlottantoniotti@gmail.com

+39050992192

Vincenzo Formica, MD

Role: primary

v.formica1@gmail.it

Other Identifiers

AtezoTRIBE2

Identifier Type: -

Identifier Source: org_study_id