Results of the phase II TRUST trial of induction treatment with FOLFOXIRI + bevacizumab (BV) followed by chemo-radiotherapy (CRT) plus BV and surgery in locally advanced rectal carcinoma (LARC).

Authors

null

Gianluca Masi

Azienda Ospedaliero-Universitaria Pisana, Istituto Toscano Tumori, Pisa, Italy

Gianluca Masi , Sara Lonardi , Aldo Sainato , Piero Buccianti , Giacomo Allegrini , Angelo Martignetti , Caterina Vivaldi , Francesca Bergamo , Sabrina Montrone , Matteo Franceschi , Lorenzo Marcucci , Gianna Musettini , Francesca Battaglin , Gabriele Coraggio , Riccardo Balestri , Chiara Cremolini , Isabella Paladina , Lisa Salvatore , Vittorina Zagonel , Alfredo Falcone

Organizations

Azienda Ospedaliero-Universitaria Pisana, Istituto Toscano Tumori, Pisa, Italy, Istituto Oncologico Veneto-IRCCS, Padua, Italy, U.O. Radioterapia, Azienda Ospedaliero-Universitaria Pisana, Pisa, Italy, U.O. Chirurgia Generale, Azienda Ospedaliero-Universitaria Pisana, Pisa, Italy, Dipartimento Oncologico U.O. Oncologia Medica Azienda Toscana Nord Ovest, Pontedera, Italy, Unita Operativa Di Oncologia Medica, Siena, Italy, Universita Di Pisa, Pisa, Italy, Oncologia Medica I, Istituto Oncologico Veneto, IRCCS, Padova, Italy, U.O. Oncologia Medica II, Universitaria Ospedale S. Chiara, Azienda Ospedaliero-Universitaria Pisana Istituto Toscano Tumori, Pisa, Italy, Dipartimento di Oncologia clinica e Sperimentale, UOC Oncologia medica 1, Istituto Oncologico Veneto-IRCCS, Padova, Italy, UO Radioterapia, Azienda Ospedaliero-Universitaria Pisana, Pisa, Italy, UO Chirurgia Generale, Azienda Ospedaliero-Universitaria Pisana, Pisa, Italy, Dipartimento di Oncologia Clinica e Sperimentale, UOC Oncologia Medica I, Istituto Oncologico Veneto-IRCCS, Padova, Italy, Medical Oncology 1, Istituto Oncologico Veneto IOV - IRCCS, Padova, Italy, Azienda Ospedaliero-Universitaria Pisana, Pisa, Italy

Research Funding

Other Foundation

Background: Induction chemotherapy (CT) is a promising option in LARC. FOLFOXIRI + BV is an effective treatment in metastatic colorectal cancer. Methods: This is a phase II multicentric single-arm single-stage trial. Primary endpoint was 2-year disease-free survival (DFS). Patients (pts) with LARC at < 12 cm from the anal verge, cN+ or cT4 or high risk cT3 (MRI criteria) underwent 6 cycles of FOLFOXIRI (irinotecan 165 mg/m2, oxaliplatin 85 mg/m2, folinate 200 mg/m2 and 5FU 3200 mg/m2 in 48 h) + BV (5 mg/kg) every 2 weeks followed by CRT (50.4 Gy + 5FU 225 mg/m2/day or capecitabine 825 mg/m2/bid continuously + BV 5 mg/kg on days 1, 15, 28). Surgery was planned 8 weeks after CRT. Results: We enrolled 48 pts. Main characteristics were: median age, 53 years (30-74); cT2/T3/T4, 4%/60%/36%; cN0/N+, 4%/96%. 46 pts completed induction CT: 1 patient (pt) died due to bowel perforation and sepsis and 1 discontinued CT after acute kidney injury. Main grade (G) 3/4 toxicities during induction were neutropenia (42%), febrile neutropenia (4.2%), diarrhea (12.5%). Clinical Response Rate (CRR) after induction was 77%. One pt underwent surgery after induction CT and 45 started CRT. After the first 13 pts, the protocol was amended and the schedule of capecitabine modified (800 mg/m2/bid 5 days/week) due to an excessive rate of G3 hand-foot syndrome (23%) and proctitis (23%). After amendment all pts completed CRT with acceptable toxicity: in particular G3-4 toxicities included only 6.2% proctitis. CRR after CRT was 78%. One pt had early progressive disease (PD) after CRT and died. 44 pts underwent surgery: low anterior resection 90%, abdomino-perineal resection 7%. R0 resection was achieved in 98% of pts. Early (90 days) post-surgical complication rate was 31% with 17% of anastomotic dehiscences, all solved. Pathologic complete response rate was 36%. At a median follow up of 21 months, 8 pts had PD (2 local recurrences) and the estimated 2y-DFS is 78%. Conclusions: Induction CT with FOLFOXIRI + BV followed by CRT is feasible and highly active in LARC. The rate of early post-surgical complications is not negligible. Preliminary results for DFS are promising. Clinical trial information: 2011-003340-45.

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Abstract Details

Meeting

2016 ASCO Annual Meeting

Session Type

Poster Session

Session Title

Gastrointestinal (Colorectal) Cancer

Track

Gastrointestinal Cancer—Colorectal and Anal

Sub Track

Colorectal Cancer–Local-Regional Disease

Clinical Trial Registration Number

2011-003340-45

Citation

J Clin Oncol 34, 2016 (suppl; abstr 3615)

DOI

10.1200/JCO.2016.34.15_suppl.3615

Abstract #

3615

Poster Bd #

312

Abstract Disclosures