Bevacizumab (Bev) with or without erlotinib as maintenance therapy, in patients (pts) with metastatic colorectal cancer (mCRC): Exploratory analysis according to KRAS status in the gercor DREAM phase III trial.

2013 ◽  
Vol 31 (4_suppl) ◽  
pp. 448-448
Author(s):  
Benoit Samson ◽  
Christophe Tournigand ◽  
Werner Scheithauer ◽  
Gérard Lledo ◽  
Frédéric Viret ◽  
...  

448 Background: In the GERCOR-DREAM trial, maintenance therapy (MT) with bev + EGFR tyrosine kinase inhibitor erlotinib (E) after a first-line Bev-based induction therapy (IT) in pts with mCRC significantly improved PFS compared with bev alone. Here we explore the influence of KRAS status on erlotinib efficacy. Methods: Pts with previously untreated and unresectable mCRC were eligible. After a Bev-based IT with FOLFOX or XELOX or FOLFIRI, pts without disease progression were randomized to MT between Bev alone (Bev 7.5 mg/kg q3w; arm A) or Bev+E (Bev 7.5 mg/kg q3w, E 150 mg/day continuously; arm B). KRAS determination was established by local assessment in each center. Results: Among the 452 randomized patients, KRAS status was available in 403 pts (89%): 234 pts (58%) KRAS wt and 169 pts (42%) KRAS mut. Clinical characteristics were similar between both populations. For the whole population of randomized patients (n=452), median PFS from inclusion were 9.33m and 10.55m in arm A and B, respectively (HR=0.76 [0.61-0.94], p=0.011). For KRAS wt population, median PFS from inclusion was 9.66 m and 10.94 m in arm A and B, respectively (HR=0.80 [0.59-1.08], p=0.141). For KRAS mut population, median PFS from inclusion was 9.79 m and 9.79 m in arm A and B, respectively (HR=0.86 [0.61-1.22], p=0.393). In KRAS wt pts treated with erlotinib, cutaneous toxicity was predictive of PFS: mPFS was 9.66m in pts with grade 0 (n=101) and 10.91m in pts with grade ≥1 (n=114) (HR=0.69 [0.51-0.95], p=0.0186). Conclusions: The addition of erlotinib to bevacizumab as maintenance treatment in first-line metastatic colorectal cancer significantly improves progression-free survival from inclusion. However, in both wt and mut KRAS pts, difference was not statistically significant. Unlike anti-EGFR monoclonal antibodies, the addition of erlotinib to bevacizumab does not appear to be antagonist in KRAS mutant patients. Clinical trial information: NCT00265824.

2012 ◽  
Vol 30 (18_suppl) ◽  
pp. LBA3500-LBA3500 ◽  
Author(s):  
Christophe Tournigand ◽  
Benoit Samson ◽  
Werner Scheithauer ◽  
Gérard Lledo ◽  
Frédéric Viret ◽  
...  

LBA3500^ Background: Therapy targeting VEGF or EGFR demonstrated clinical activity in combination with chemotherapy (CT) in mCRC but monoclonal antibodies cannot be associated. The DREAM trial compares a maintenance therapy (MT) with bev +/- EGFR tyrosine kinase inhibitor erlotinib (E) after a first-line Bev-based induction therapy (IT) in pts with mCRC. Methods: Pts with previously untreated and unresectable mCRC were eligible. After a Bev-based IT with FOLFOX or XELOX or FOLFIRI, pts without disease progression were randomized to MT between Bev alone (Bev 7.5 mg/kg q3w; arm A) or Bev+E (B 7.5 mg/kg q3w, E 150 mg/day continuously; arm B). Pts were treated until progression or unacceptable toxicity. The primary endpoint was PFS on MT. Results: The study enrolled 700 pts from 01/2007 to 11/2011 in 3 countries (France, Canada, Austria). 446 (63.7%) pts were randomized for MT (arm A, N=224; arm B, N=222). Among the 446 randomized pts, IT regimen was FOLFOX-Bev in 265 pts (59.4%), XELOX-Bev in 135 pts (30.3%), and FOLFIRI-Bev in 46 pts (10.3%). Baseline characteristics of randomized pts were (arm A/B): ECOG PS 0, 60% in both arms; normal LDH level 47%/49%; normal alkaline phosphatase level 48%/50%; synchronous metastasis 83%/82%. The median no of MT cycles was 6 in both arms. With a median follow-up of 31.0 months, 327 PFS events were observed. Median MT-PFS were 4.6 m in arm A vs 5.8 m in arm B (HR 0.73 [95%CI: 0.59-0.91], P=.005). Median PFS from inclusion were 9.2 m vs 10.2 m. During MT, in arm A vs arm B, grade 3-4 diarrhea (<1% vs 9%) and grade 3 skin toxicity (0% vs 19%) were the main differences in toxicity. Severe adverse events from randomization related to B or E were 6 in arm A and 7 in arm B. Overall survival is not mature. Conclusions: The addition of erlotinib to bevacizumab after induction therapy significantly improves the duration of maintenance PFS, following induction with first-line chemotherapy plus bevacizumab, in patients with unresectable metastatic colorectal cancer.


2017 ◽  
Vol 28 (6) ◽  
pp. 1288-1293 ◽  
Author(s):  
J.J.M. Kwakman ◽  
L.H.J. Simkens ◽  
J.M. van Rooijen ◽  
A.J. van de Wouw ◽  
A.J. ten Tije ◽  
...  

2007 ◽  
Vol 25 (13) ◽  
pp. 1670-1676 ◽  
Author(s):  
Alfredo Falcone ◽  
Sergio Ricci ◽  
Isa Brunetti ◽  
Elisabetta Pfanner ◽  
Giacomo Allegrini ◽  
...  

Purpose The Gruppo Oncologico Nord Ovest (GONO) conducted a phase III study comparing fluorouracil, leucovorin, oxaliplatin, and irinotecan (FOLFOXIRI [irinotecan 165 mg/m2 day 1, oxaliplatin 85 mg/m2 day 1, leucovorin 200 mg/m2 day 1, fluorouracil 3,200 mg/m2 48-hour continuous infusion starting on day 1, every 2 weeks]) with infusional fluorouracil, leucovorin, and irinotecan (FOLFIRI). Methods Selection criteria included unresectable metastatic colorectal cancer, age 18 to 75 years, and no prior chemotherapy for advanced disease. The primary end point was response rate (RR). Results A total of 244 patients were randomly assigned. An increase of grade 2 to 3 peripheral neurotoxicity (0% v 19%; P < .001), and grade 3 to 4 neutropenia (28% v 50%; P < .001) were observed in the FOLFOXIRI arm. The incidence of febrile neutropenia (3% v 5%) and grade 3 to 4 diarrhea (12% v 20%) were not significantly different. Responses, as assessed by investigators, were, for FOLFIRI and FOLFOXIRI, respectively, complete, 6% and 8%; and partial, 35% and 58%, (RR, 41% v 66%; P = .0002). RR confirmed by an external panel was 34% versus 60% (P < .0001). The R0 secondary resection rate of metastases was greater in the FOLFOXIRI arm (6% v 15%; P = .033, among all 244 patients; and 12% v 36%; P = .017 among patients with liver metastases only). Progression-free survival (PFS) and overall survival (OS) were both significantly improved in the FOLFOXIRI arm (median PFS, 6.9 v 9.8 months; hazard ratio [HR], 0.63; P = .0006; median OS, 16.7 v 22.6 months; HR, 0.70; P = .032). Conclusion The FOLFOXIRI regimen improves RR, PFS, and OS compared with FOLFIRI, with an increased, but manageable, toxicity in patients with metastatic colorectal cancer with favorable prognostic characteristics. Further studies of FOLFOXIRI in combination with targeted agents and in the neoadjuvant setting are warranted.


2007 ◽  
Vol 25 (30) ◽  
pp. 4779-4786 ◽  
Author(s):  
Charles S. Fuchs ◽  
John Marshall ◽  
Edith Mitchell ◽  
Rafal Wierzbicki ◽  
Vinod Ganju ◽  
...  

PurposeThis phase III study compared the safety and efficacy of the following three different irinotecan-containing regimens in the first-line treatment of metastatic colorectal cancer: irinotecan plus infusional fluorouracil (FU)/leucovorin (LV) (FOLFIRI), irinotecan plus bolus FU/LV (mIFL), and irinotecan plus oral capecitabine (CapeIRI).Patients and MethodsA total of 430 previously untreated metastatic colorectal cancer patients were randomly assigned to receive FOLFIRI (n = 144), mIFL (n = 141), or CapeIRI (n = 145). Patients were concurrently randomly assigned to a double-blind treatment with celecoxib or placebo. After a protocol amendment, an additional 117 patients were randomly assigned to either FOLFIRI plus bevacizumab (FOLFIRI+Bev; n = 57) or mILF plus bevacizumab (mIFL+Bev; n = 60), whereas the CapeIRI arm was discontinued. The primary study end point was progression-free survival (PFS), with secondary end points of overall survival (OS), response rate, and toxicity.ResultsMedian PFS was 7.6 months for FOLFIRI, 5.9 months for mIFL (P = .004 for the comparison with FOLFIRI), and 5.8 months for CapeIRI (P = .015). Median OS was 23.1 months for FOLFIRI, 17.6 months for mIFL (P = .09), and 18.9 months for CapeIRI (P = .27). CapeIRI was associated with higher rates of severe vomiting, diarrhea, and dehydration. After the amendment to add bevacizumab, the median survival time has not yet been reached for FOLFIRI+Bev and was 19.2 months for mIFL+Bev (P = .007). FOLFIRI+Bev was associated with a higher rate of ≥ grade 3 hypertension than mIFL+Bev.ConclusionFOLFIRI and FOLFIRI+Bev offered superior activity to their comparators and were comparably safe. An infusional schedule of FU should be the preferred irinotecan-based regimen in first-line metastatic colorectal cancer.


2009 ◽  
Vol 27 (15_suppl) ◽  
pp. e15138-e15138
Author(s):  
S. Tomao ◽  
G. Spinelli ◽  
L. Rossi ◽  
G. Pasciuti ◽  
G. Arcangeli ◽  
...  

e15138 Background: Bevacizumab (BEV) has shown clinical activity in metastatic colorectal cancer patients (mCRC)and randomised phase III trials have demonstrated that this agent significantly improves overall and/or progression-free survival when added to first-line irinotecan based chemotherapy (CT) regimens. We evaluated the efficacy and safety of BEV plus FOLFIRI (irinotecan, 5- fluorouracil, and leucovorin) as first line treatment in 27 consecutive metastatic colorectal cancer cases, with the primary end point to calculate the median time to clinical response with this chemotherapeutic schedule. Methods: Between October 2007 and January 2008 we collected the data on 27 patients with mCRC treated with first line chemotherapy with BEV plus FOLFIRI. Elegibility criteria had to be: mCRC; no prior CT for metastatic disease; ECOG PS 0/1, adequate organ function; no CNS metastases. The treatment consisted of a minimum of six cycles of irinotecan plus infusional 5-FU/LV according to the classical FOLFIRI schedule; BEV (5mg/kg) was given on day 1 with CT and then every 2 weeks until disease progression. Safety and response were assessed at the time of first CT and every 4 weeks thereafter. Results: 27 pts were evaluable (male 18; median age 61 years (range 45–77), ECOG PS 0: 52%, PS 1: 48%. The sites of metastases were: liver (15 pts), lung (5 pts), liver and lung (5 pts), peritoneal wall (2 pts).Median follow-up was 18 weeks. Two patients had complete response(CR) and 13 pts partial response (PR), with an overall response rate of 57.7%. Five patients had stable disease and 6 patients showed progressive disease. A clinical benefit was demonstrated in 77 % of pts. We observed a median time to clinical response of 11 weeks, evaluated with tumor markers and with CT/NMR/US examinations. A grade 3 or 4 neutropenia was detected in 39% of pts and grade 2 or 3 hypertension in 9%. We did’nt observe cases of thrombosis, bleeding and gastrointestinal perforation, sometimes related to the use of BEV. Conclusions: In this little experience the efficacy and safety of BEV associated with FOLFIRI schedule, a first line therapy in mCRC,is consistent with results from other previous studies, showing moreover a short time to clinical response with this association. No significant financial relationships to disclose.


2012 ◽  
Vol 30 (15_suppl) ◽  
pp. LBA3500-LBA3500
Author(s):  
Christophe Tournigand ◽  
Benoit Samson ◽  
Werner Scheithauer ◽  
Gérard Lledo ◽  
Frédéric Viret ◽  
...  

LBA3500^ The full, final text of this abstract will be available at abstract.asco.org at 12:01 AM (EDT) on Sunday, June 3, 2012, and in the Annual Meeting Proceedings online supplement to the June 20, 2012, issue of Journal of Clinical Oncology. Onsite at the Meeting, this abstract will be printed in the Sunday edition of ASCO Daily News.


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