Comparable safety and response rate with bevacizumab in combination with capecitabine/oxaliplatin (CapOx/Bev) versus capecitabine/irinotecan (CapIri/Bev) in advanced CRC (mCRC): A randomized phase II study of the AIO GI tumor study group

2007 ◽  
Vol 25 (18_suppl) ◽  
pp. 4034-4034 ◽  
Author(s):  
W. H. Schmiegel ◽  
A. Reinacher-Schick ◽  
W. Freier ◽  
G. Dietrich ◽  
D. Arnold ◽  
...  

4034 Background: Bevacizumab (Bev) combined with 5-FU/FA and both, irinotecan or oxaliplatin are standard regimens for mCRC. Recently, a phase III trial has demonstrated that infusional 5-FU can be substituted by capecitabine (cape) when combined with oxaliplatin and Bev whereas conflicting data are available for feasibility and efficacy of cape/irinotecan combinations. This randomized phase II trial was to compare safety and efficacy of Bev with either CapOx or CapIri in untreated mCRC. Methods: Eligibility criteria: untreated mCRC pts, ECOG PS <= 2, measurable lesion(s), adequate hematologic and organ function. Primary endpoint was % of pts progression-free after 6 months. Treatment plan: Bev 7.5 mg/kg day (d)1 with either oxaliplatin (130 mg/m2 d1)/cape (1,000 mg/m2 bid d1–14; CapOx/Bev, arm A) or irinotecan (200 mg/m2 d1)/cape (800 mg/m2 bid d 1–14; CapIri/Bev, arm B), all q d22. Arm B doses were 20% lower for both, cape and irinotecan, compared to previous trials reporting an unacceptable toxicity profile (Köhne, ASCO 2005). Treatment was continued until progression or unacceptable toxicity. Results: So far, toxicity data are available on 228 (118/110 pts arm A/B) of total 240 pts. Baseline characteristics (arm A/B): median age 64/65 yrs, male 67%/68%. A total of 684/719 cycles (median 6/6 cycles) have been administered. Most common CTC grade 3/4 toxicities (% of pts): Diarrhea 17.0/15.5, hand-foot-syndrome 5.9/2.7, peripheral neuropathy 15.3/0.0. Specific AE′s such as thrombosis, 3° hypertension and GI perforation occurred in 3.4/4.5%, 3.4/0.9% and 0.9/0.9% of pts, respectively. Among 185 evaluable pts (96/89), tumor control rates (CR+PR+SD) in arm A/B were 81.4%/82.8%, overall response rates (CR+PR) were 49.0%/52.7%. Conclusions: Both regimens, CapOx/Bev and CapIri/Bev, are well tolerated without differences in toxicity (except neuropathy). Interestingly, despite the protocol defined dose reduction of CapIri there is seemingly no difference in efficacy as measured by tumor control and response rate. Meanwhile, the trial has finished accrual and data including PFS rate will be presented at the meeting. [Table: see text]

Blood ◽  
2007 ◽  
Vol 110 (11) ◽  
pp. 752-752 ◽  
Author(s):  
Peter Hillmen ◽  
Christopher Pocock ◽  
Dena Cohen ◽  
Kim Cocks ◽  
Hazem A. Sayala ◽  
...  

Abstract Standard front-line therapy for chronic lymphocytic leukemia (CLL) is fludarabine plus cyclophosphamide. Adding mitoxantrone (FCM) or rituximab (FCR) appears to improve responses although no large randomized trials have been reported. We report a randomized Phase II trial of FCM and FCM-R in relapsed CLL. FCM was oral fludarabine (24mg/m2 for 5 days) and cyclophosphamide (150mg/m2 for 5 days) plus i.v. mitoxantrone (6mg/m2) on Day 1 of each cycle. FCM-R was identical with rituximab on Day 1 of each cycle (375mg/m2 cycle 1; 500mg/m2 cycles 2 to 6). Prophylaxis with aciclovir and co-trimoxazole was given. The primary end-point was response by NCI Criteria 2 months after therapy. Complete remission with incomplete marrow recovery (CR(i)) was defined according to the 2007 CLL Guidelines - clinical CR with a morphologically normal marrow but persistent cytopenias (i.e. platelets <100x109/l and/or neutrophils <1.5x109/l). In addition, minimal residual disease in the marrow was studied 2 months after therapy by four-color flow cytometry with MRD negativity defined as <0.01% CLL cells. 52 patients were entered into the trial with 26 in each arm. The median age was 65 (32–79) with 79% men. 42% had a β2m >4. The median number of prior therapies was 2 (1–6), 31 had prior fludarabine and 6 (12%) were refractory to or relapsed <6 months after fludarabine. 26/44 (59%) had unmutated VH genes (15/22 FCM-R; 11/22 FCM). 11 patients had deletion of 11q (FCM-R 5, FCM 6) and 1 patient had >20% 17p deleted cells (FCM-R). 36/52 (69%) received 4 or more cycles of therapy with no difference between FCM and FCM-R (18/26). Responses are shown in the Table. 35 SAE’s were reported in 23 patients. There was no difference in the number of patients with SAE’s between the arms (FCM 11, FCM-R 12). 6/7 patients (86%) who had 4 or more prior therapies reported an SAE, compared to 17/45 patients (38%) who had less than 4. 16 SAE’s were suspected to be related to FCM-R and 10 related to FCM. In summary, FCM-R is an effective therapy for relapsed CLL with over two-thirds of patients responding. The study design does not allow a statistical comparison between FCM and FCM-R but the results suggest that adding rituximab to FCM results in a higher complete response rate (CR + CR i = 43% for FCM-R and 13% for FCM) with more patients achieving MRD negativity (5 after FCM-R; 2 after FCM). The results of this randomised Phase II trial justify the study of FC with mitoxantrone and/or rituximab in larger randomized Phase III trials. Responses in 46 evaluable patients (remaining 6 not yet evaluable) All patients FCM FCM-R Number of patients 46 23 23 Overall response rate 29 (63%) 13 (57%) 16 (70%) CR 5 (11%) 1 (4%) 4 (17%) CR(i) 8 (17%) 2 (9%) 6 (26%) PR 16 (35%) 10 (43%) 6 (26%) SD/PD 12 (26%) 7 (30%) 5 (22%) Early Death (before assessment) 4 (9%) 2 (9%) 2 (9%) Withdrew consent (before assessment) 1 (2%) 1 (4%) 0 (0%) MRD negative 7 (15%) 2 (9%) 5 (22%)


2007 ◽  
Vol 25 (18_suppl) ◽  
pp. 14599-14599
Author(s):  
N. Lee ◽  
S. Bae ◽  
S. Lee ◽  
D. Kim ◽  
K. Kim ◽  
...  

14599 Background: We prospectively conducted a phase II trial to test the efficacy and safety of irinotecan, 5-fluorouracil and leucovorin (FOLFIRI) regimens for the first-line treatment of previously untreated patients with recurrent or metastatic advanced CRC. Methods: Thirty-four previously untreated patients with advanced CRC were enrolled in this study from June 2001 to December 2006. Eligible patients had histologically confirmed adenocarcinoma, no prior systemic therapy in palliative setting, ECOG PS = 2, adequate organ function, written informed consent and at least one measurable disease. The patients received either irinotecan 180 mg/m2 on day 1 with a LV bolus of 200 mg/m2 and a FU bolus of 400 mg/m2, and this was followed by a FU continuous infusion of 600 mg/m2 on day 1 and day 2 (the classic FOLFIRI regimen), or they were treated with a LV bolus of 400 mg/m2 and a FU bolus of 400 mg/m2 followed by a FU continuous infusion of 2,400 mg/m2 for 46 hours (the simplified FOLFIRI regimen), and these treatments were repeated every 2 weeks until disease progression. Results: There were 13 females and 21 males with median age of 54 years (range: 41–79). The most common metastatic sites were lung and liver. A total of 262 cycles were administrated with median 6 cycles per patient (range: 1–22). All pts were evaluable for toxicity, and 30 pts for response to the treatment. The objective response rate was 26.4% with 2 complete responses respectively. Sixteen (47%) pts had stable disease and 7 (20.5%) had a progression. The tumor control rate was 73.4%. The median TTP was 5.3 months, and the overall survival was 10.1 months. The prognostic factor for longer TTP and survival was the ECOG performance status (PS). The type of regimens was not affected on response rate, TTP and survival. The chemotherapy was generally well tolerated and the most common grade 3–4 toxicities were neutropenia, diarrhea. The non- hematological toxicities were similar for both treatment groups, with more frequent grade =3 neutropenia being noted for the simplified FOLFIRI regimen. Conclusions: The FOLFIRI regimen was demonstrated to have a moderate antitumor activity with acceptable toxicity profiles, and tend to show more favorable outcome for patients with good ECOG PS. No significant financial relationships to disclose.


2012 ◽  
Vol 30 (18_suppl) ◽  
pp. LBA4003-LBA4003 ◽  
Author(s):  
Thierry Conroy ◽  
Marie-Pierre Galais ◽  
Jean Luc Raoul ◽  
Olivier Bouche ◽  
Sophie Gourgou-Bourgade ◽  
...  

LBA4003 Background: CRT is one of the best treatment options for localized EC. As new combinations are required to improve safety and survival, we launched a randomized phase II study to assess the complete response (CR) rate of CRT with FOLFOX versus 5FU/cisplatin in 97 pts with localized EC (Conroy 2010). The trial having met its objectives, it has been pursued as a phase III trial. Stratified randomization was performed centrally in a 1:1 ratio according to histological type, pretreatment weight loss in the prior 6 months (<10% vs ≥10%), ECOG PS (0 vs 1 vs 2), and center. Methods: Pts with technically unresectable cancer or those with surgical contraindications or who refused to undergo surgery were eligible. Eligibility criteria also included age >18 years (y), PS ≤ 2, previously untreated adenocarcinoma or squamous cell EC (any T, N0 or N1, M0 or M1a). The radiation dose was 50 Gy (2Gy/fr) 5 d/wk for 5 wks in both arms. In Arm A, pts received 6 bimonthly cycles (cy): oxaliplatin 85 mg/m2 d1 and leucovorin 200 mg/m2 followed by 5-FU 400 mg/m2 bolus d1 then 1,600 mg/m2 46h continuous infusion (ci) ; the first 3 cy were delivered during RT, the 3 other after. In Arm B, pts received 4 cy: cisplatin 75 mg/m2 d1 followed by 5FU 1,000 mg/m2/d ci d1-4, the first 2 cy during RT and 2 other after. The primary endpoint was PFS. Main secondary endpoints were OS, grade 3-4 toxicities, and quality of life. A total of 266 pts would provide 90% power to detect a 20% 3y-PFS difference (α=0.05). Results: 267 pts were enrolled between 10/2004 and 08/2011. Treatment cohorts were well balanced: male 81%; median age 61 y; PS 0 53%, squamous cell 85.8%, stage III 52%, IVA 6.0% and IVB 3.0%. Full treatment was delivered to 67.9% and 72.2% of pts in arms A/B, respectively. 7 toxic deaths occurred in each arm. Grade 3/4 toxicities per pt (%) in arms A/B were neutropenia 30.6/31.3, febrile neutropenia 5.3/7.0, anemia 5.4/11.0, asthenia 17.6/10.2, respectively. The median FU time was 25.3 mos. 3y-PFS was 18.2/17.4 % (HR=1.07; 95%CI =0.80-1.43) and median OS was 20.2 /17.5 m (HR=1.06; 95%CI =0.77-1.46). Conclusions: CRT with FOLFOX does not improve PFS compared to cisplatin and 5-FU and has similar toxicities.


2013 ◽  
Vol 31 (4_suppl) ◽  
pp. 454-454 ◽  
Author(s):  
J. Randolph Hecht ◽  
Allen Lee Cohn ◽  
Shaker R. Dakhil ◽  
Mansoor N. Saleh ◽  
Bilal Piperdi ◽  
...  

454 Background: Pmab has demonstrated significant improvement in progression-free survival (PFS) in pts with WT KRAS mCRC as 2nd-line tx in a phase III trial comparing pmab + FOLFIRI vs FOLFIRI alone. Here, we describe the results of SPIRITT, a multicenter, randomized phase II study evaluating pmab + FOLFIRI and bev + FOLFIRI in pts with WT KRAS mCRC previously treated with a 1st-line bev + oxaliplatin (Ox)-based chemotherapy regimen. Methods: Pts were randomized 1:1 to pmab 6.0 mg/kg + FOLFIRI Q2W or to bev 5.0 or 10.0 mg/kg + FOLFIRI Q2W. Eligibility criteria included: WT KRAS mCRC, ECOG ≤ 1, no prior irinotecan or anti-EGFR tx, and tx failure of prior 1st-line bev + Ox-based therapy (≥ 4 cycles). The primary endpoint was PFS; secondary endpoints included overall survival (OS), objective response rate (ORR), and safety. No formal hypothesis was tested. Results: 182 pts with WT KRAS mCRC were randomized. All pts received tx. Efficacy results are shown (table). Worst grade of 3/4 adverse events (AE) occurred in 78% of pts in the pmab + FOLFIRI arm and 65% in the bev + FOLFIRI arm. Grade 5 AEs occurred in 7% of pts in the pmab + FOLFIRI arm and 7% in the bev + FOLFIRI arm. Tx discontinuation due to any AE was 29% in the pmab + FOLFIRI arm and 25% in the bev + FOLFIRI arm. Conclusions: In this estimation study of pts with WT KRAS mCRC that previously received bev + Ox-based tx, the PFS hazard ratio (HR) was 1.01 (95% CI: 0.68 - 1.50). The OS HR was 1.06 (95% CI: 0.75 - 1.49). The observed ORR was higher in the pmab + FOLFIRI arm. 54% of bev + FOLFIRI pts received subsequent anti-EGFR tx. The safety profile for both arms was similar to previously reported studies. Tx discontinuation rates due to AEs were similar between the arms. Clinical trial information: NCT00418938. [Table: see text]


2013 ◽  
Vol 31 (15_suppl) ◽  
pp. 4018-4018 ◽  
Author(s):  
Li-Tzong Chen ◽  
Jen-Shi Chen ◽  
Yee Chao ◽  
Chang-Sung Tsai ◽  
Yan-Shen Shan ◽  
...  

4018 Background: Gemcitabine/platinum combination is considered as globally acceptable standard care in patients with ABTC. Two recently published randomized trials showed adding EGFR antagonist, either erlotinib or cetuximab, does not further improve the clinical outcomes of gemcitabine/oxaliplatin (GEMOX)-treated ABTC patients. However, the impact of KRAS mutation status on the results of both studies was not properly addressed. Methods: A prospective, multicenter randomized, phase II trial to evaluate the therapeutic efficacies of adding cetuximab to GEMOX in patients with ABTC, in which eligible patients were stratified by status of KRAS mutation and ECOG PS, and tumor location then randomized to receive either GEMOX (gemcitabine 800 mg/m2, fixed-rate infusion and oxaliplatin 85 mg/m2, i.v., Q 2 weeks) or GEMOX plus cetuximab (500 mg/m2, i.v., Q 2 weeks, C-GEMOX). The primary endpoint was overall response rate (ORR). As an exploratory trial, 120 (60 per arm) patients was estimated to detect a two-tailed 10% difference in ORR (20% in GEMOX and 30% in C-GEMOX) with a significant level of a=0.2 and b=0.5. Results: Between Nov 2010 and May 2012, a total of 122 patients were accrued. The demography was male: 47.5%, median age: 60 y/o, ECOG PS 0/1: 28.7%/71.3%, IHCC/EHCC/GBC: 71.3%/16.4%/12.3%, KRAS mutation: 36.1%, with locally advanced/metastatic diseases: 32.0%/68.0%, and prior surgical resection: 41.8%. On intent-to-treat analysis, the ORR and DCR in the C-GEMOX (N=62) and GEMOX (N-60) arms was 27.3% vs 15.0% (p=0.1223) and 82.2% vs 60.0% (p=0.0090), respectively (Fisher’s exact test); while the median PFS was 7.1 vs 4.0 months (p= 0.0069) and median OS was 10.3 vs 8.8 months (p=0.4057), respectively (log-rank test). Planned subgroup analysis showed the 43 patients with KRAS mutated tumors benefited more from cetuximab therapy, with a DCR of 78.3% vs 38.1% (p=0.0132), median PFS of 7.0 vs 1.9 months (p=0.0351) and median OS of 10.3 vs 6.6 months (p=0.6924). Conclusions: Adding cetuximab significant improves the DCR and PFS of GEMOX in ABTC patients, notably in subpopulation with KRAS mutated tumors. Larger-scale phase III trial is warranted. Clinical trial information: NCT01267344.


2010 ◽  
Vol 28 (18_suppl) ◽  
pp. LBA1011-LBA1011 ◽  
Author(s):  
J. Crown ◽  
V. Dieras ◽  
E. Staroslawska ◽  
D. A. Yardley ◽  
N. Davidson ◽  
...  

LBA1011 Background: Recent trials support combining an antiangiogenic agent with chemotherapy (CT) in pretreated patients (pts) with metastatic BC (MBC). SU, an oral multitargeted tyrosine kinase inhibitor demonstrated single-agent activity (11% ORR) in heavily pretreated pts with MBC. Antitumor activity with SU+C was reported in pts with advanced solid tumors. This multicenter, randomized, phase III trial (SUN 1099) compared the efficacy and safety of SU + C vs. C in pts with ABC. Methods: Eligibility criteria were: age ≥18 yrs, ECOG PS ≤1, measurable HER2-positive (FISH+, CISH+ or IHC3+) or -negative ABC, no brain metastases, prior treatment (tx) with an anthracycline and taxane in the (neo)adjuvant or metastatic setting, and ≤2 prior CT regimens for advanced disease. Prior C tx was not permitted. Pts were randomized (1:1) to combination tx with C 2,000 mg/m2/d po days 1–14 every q3w + SU 37.5 mg/d po daily, or to C 2,500 mg/m2/d days 1–14 q3w. Pts with progressive disease per RECIST on the C arm were offered single-agent SU (37.5 mg/d). Endpoints included PFS (primary), ORR, OS, QoL, and safety. Stratified and unstratified log-rank tests compared PFS between arms. Results: At the data cutoff (December 15, 2009), the ITT population comprised 442 pts: 221 in each arm with baseline characteristics well balanced between arms. The trial did not meet its primary endpoint of prolonging PFS based on the independent radiologic assessment nor secondary endpoint of longer OS (final analysis March 10, 2010). Median PFS was 5.5 mos (95% CI 4.5–6.0) in the SU+C arm vs. 5.9 mos (95% CI 5.4–7.6) in the C arm (HR 1.224). Median OS was 16.4 mos (95% CI 13.6–18.4) for the SU+C arm and 16.5 mos (95% CI 14.2–18.6) for the C arm (HR 0.995). ORR was 18.6% for the SU+C arm and 16.3% for the C arm. The most common all causality grade 3/4 AEs (≥10%) were neutropenia (32%), hand–foot syndrome (HFS; 16%), thrombocytopenia (17%), asthenia (12%), fatigue (10%) in the SU+C arm and HFS (24%) and diarrhea (10%) in the C arm. Intended drug delivery for each arm was >80%. Discontinuations due to an AE were more frequent in the SU+C arm vs. the C arm. Discontinuations by drug in the SU+C arm: SU 39%, C 42%, SU and C 33%; in the C arm: 18%. Conclusions: Data from this randomized phase III trial do not support use of SU+C for therapy of patients with ABC. [Table: see text]


2012 ◽  
Vol 30 (4_suppl) ◽  
pp. 602-602
Author(s):  
Yutaka Ogata ◽  
Yoshito Akagi ◽  
Yoshihiro Kakeji ◽  
Yasunori Emi ◽  
Eiji Oki ◽  
...  

602 Background: The Kyushu Study group of Clinical Cancer conducted a phase II study that evaluated the FIREFOX regimen. (KSCC0701, Akagi et al, J Clin Oncol 28:15s, 2010). This study demonstrated the efficacy and mild neurotoxicity of this regimen. The present study evaluated the efficacy and safety of the FIREFOX plus bevacizumab (bev). Methods: Eligibility criteria included histologically confirmed advanced colorectal cancer, ECOG PS 0-2 and adequate bone marrow, renal and hepatic function. Patients (pts) received an alternating regimen of 4 cycles of mFOLFOX-6 plus bev (oxaliplatin 85 mg/m2, leucovorin 200 mg/m2, bev 5 mg/kg d1 followed by 400 mg/m2 bolus 5-FU and a 46-hr 2,400 mg/m2 5-FU infusion every 2 weeks) followed by 4 cycles of FOLFIRI plus bev (oxaliplatin replaced with irinotecan 150 mg/m2 d1). This schedule was repeated until unacceptable toxicity or disease progression occurred. The primary endpoint is progression-free survival. (UMIN000001312) Results: Of the 52 pts enrolled from May 2008 to July 2009. Two of the patients did not fulfill the eligibility criteria. M/F, 30/20; median age, 59.5 years (range 37 - 75); ECOG PS 0/1/2, 46/4/0. The median number of administration cycles was 14 (range, 2 - 44). Response rate (RECIST criteria) for CR, PR, SD, PD and NE were 2 (4%), 28 (56%), 14 (28%), 4 (8%) and 2 (4%), respectively. An overall response rate was 60% (95% CI: 45 - 74%). Median progression-free survival was14.2 M (95% CI: 10.6 M-16.3 M) and median overall survival was 27.5 M (95% CI; 22.4 M – not determined). The 2-year survival rate was 56.8%. Of the 52 pts evaluated for toxicity. The most common grade 3-4 adverse events were leukopenia (7.7%), neutropenia (32.7%), anemia (1.9%), fatigue (9.6%), anorexia (13.5%), stomatitis (3.8%), neurotoxicity (3.8%), hypertension (1.9%), diarrhea (7.7%), febrile neutropenia (3.8%), nausea (9.6%), vomiting (5.8%), hypersensitivity (3.8%), and thromboembolism (1.9%). Conclusions: The results of this phase II study show that the FIREFOX plus bev regimen is effective and well tolerated in the first-line treatment of advanced colorectal cancer. The low rate of neurotoxicity is also promising.


2013 ◽  
Vol 31 (15_suppl) ◽  
pp. 3616-3616 ◽  
Author(s):  
Allen Lee Cohn ◽  
J. Randolph Hecht ◽  
Shaker Dakhil ◽  
Mansoor N. Saleh ◽  
Bilal Piperdi ◽  
...  

3616 Background: Pmab has demonstrated significant improvement in progression-free survival (PFS) in pts with WT KRAS mCRC as 2nd-line tx in a phase III trial comparing pmab + FOLFIRI vs FOLFIRI alone. Here, we describe the results of SPIRITT, a multicenter, randomized phase II study evaluating pmab + FOLFIRI and bev + FOLFIRI in pts with WT KRAS mCRC previously treated with a 1st-line bev + oxaliplatin (Ox)-based chemotherapy regimen. Methods: Pts were randomized 1:1 to pmab 6.0 mg/kg + FOLFIRI Q2W or to bev 5.0 or 10.0 mg/kg + FOLFIRI Q2W. Eligibility criteria included: WT KRAS mCRC, ECOG ≤ 1, no prior irinotecan or anti-EGFR tx, and tx failure of prior 1st-line bev + Ox-based therapy (≥ 4 cycles). The primary endpoint was PFS; secondary endpoints included overall survival (OS), objective response rate (ORR), and safety. No formal hypothesis was tested. Results: 182 pts with WT KRAS mCRC were randomized. All pts received tx. Efficacy results are shown (Table). Worst grade of 3/4 adverse events (AE) occurred in 78% of pts in the pmab + FOLFIRI arm and 65% in the bev + FOLFIRI arm. Grade 5 AEs occurred in 7% of pts in the pmab + FOLFIRI arm and 7% in the bev + FOLFIRI arm. Tx discontinuation due to any AE was 29% in the pmab + FOLFIRI arm and 25% in the bev + FOLFIRI arm. Conclusions: In this estimation study of pts with WT KRAS mCRC that previously received bev + Ox-based tx, the PFS hazard ratio (HR) was 1.01 (95% CI: 0.68 - 1.50). The OS HR was 1.06 (95% CI: 0.75 - 1.49). The observed ORR was higher in the pmab + FOLFIRI arm. 54% of bev + FOLFIRI pts received subsequent anti-EGFR tx. The safety profile for both arms was similar to previously reported studies. Tx discontinuation rates due to AEs were similar between the arms. Clinical trial information: NCT00418938. [Table: see text]


2013 ◽  
Vol 31 (4_suppl) ◽  
pp. 446-446 ◽  
Author(s):  
Lee Steven Schwartzberg ◽  
Fernando Rivera ◽  
Meinolf Karthaus ◽  
Gianpiero Fasola ◽  
Jean-Luc Canon ◽  
...  

446 Background: Pmab has demonstrated significant improvement in progression-free survival (PFS) in pts with WT KRAS mCRC as 1st-line tx in a phase III trial comparing pmab + FOLFOX4 vs FOLFOX4 alone. Here, we describe the results of PEAK, a multicenter, randomized phase II study evaluating pmab + mFOLFOX6 and bev + mFOLFOX6 in pts with previously untreated WT KRASmCRC. Methods: Pts were randomized 1:1 to pmab 6.0 mg/kg + mFOLFOX6 Q2W or bev 5.0 mg/kg + mFOLFOX6 Q2W. Pt eligibility criteria included: WT KRASmCRC, ECOG performance status ≤ 1, and no prior chemotherapy, anti-VEGF tx, or anti-EGFR tx for mCRC. The primary endpoint was PFS; secondary endpoints included overall survival (OS), objective response rate (ORR), and safety. No formal hypothesis was tested. Results: 285 pts with WT KRASmCRC were randomized and 278 pts received tx. Demographics were balanced between arms. Intent-to-treat efficacy results are shown (Table). Worst grade 3/4 adverse events (AE) occurred in 86% of pts in the pmab + mFOLFOX6 arm vs 76% of pts in the bev + mFOLFOX6 arm. Grade 5 AEs occurred in 5% of pts in the pmab + mFOLFOX6 arm and 6% of pts in the bev + mFOLFOX6 arm. Tx discontinuation due to any AE was 24% in the pmab + mFOLFOX6 arm and 27% in the bev + mFOLFOX6 arm. Conclusions: In this estimation study of pts with WT KRASmCRC without any prior therapy for mCRC, PFS and ORR were similar between arms. The median OS was not reached in the pmab + mFOLFOX6 arm. The safety profile for both arms was consistent with previously reported studies of either combination. Tx discontinuation rates due to AEs were similar between arms. Clinical trial information: NCT00819780. [Table: see text]


2007 ◽  
Vol 25 (18_suppl) ◽  
pp. 4544-4544 ◽  
Author(s):  
S. Cascinu ◽  
R. Berardi ◽  
S. Siena ◽  
R. Labianca ◽  
A. Falcone ◽  
...  

4544 Background: Cetuximab, an EGFR antibody inhibitor, has been shown to increase the activity of gemcitabine (GEM) in APC. Based on data from randomised trials and meta-analyses suggesting that the combination of a GEM with a platinum analog significantly improves survival as compared to GEM alone, we assessed the activity and feasibility of a combination of GEM/cisplatin (CDDP) plus cetuximab. Methods: Multicenter, randomised two-arm phase II trial: GEM 1,000 mg/m2 day 1,8 and CDDP 35 mg/m2 day 1,8 every 21 days alone or in combination with cetuximab 250 mg/m2 weekly after a loading dose of 400 mg/m2. Treatment was limited to a maximum of 9 cycles. With 37 patients in each arm the power was 90% to select the truly better arm if the true between arm difference in response rate (RECIST) is at least 15%. The study was open for accrual until June 2005. Results: We present here the results of 74 patients including in the study. In all the patients, the first response rate are available (investigators’ assessment after 3 cycles) as well as toxicity data. Conclusions: Cetuximab does not seem to positively interact with GEM/CDDP combination in terms of activity especially concerning time to progression. Although toxicity was not increased by cetuximab, this combination should not be assessed in a phase III trial.The trial was supported in part by by Merck KGaA. [Table: see text] No significant financial relationships to disclose.


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