Genetic variations within the vitamin C transporter genes to predict outcome in metastatic colorectal cancer patients treated with first-line FOLFIRI and bevacizumab: Data from FIRE-3 trial.

2017 ◽  
Vol 35 (15_suppl) ◽  
pp. 11507-11507
Author(s):  
Martin D. Berger ◽  
Sebastian Stintzing ◽  
Dongyun Yang ◽  
Shu Cao ◽  
Yuji Miyamoto ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Vitamin C ◽  
Metastatic Colorectal Cancer ◽  
Direct Sequencing ◽  
Negative Control ◽  
Free Radical Scavenger ◽  
Phase Iii ◽  
Radical Scavenger ◽  
First Line ◽  
Transporter Proteins

11507 Background: Vitamin C is involved in many critical metabolic processes. Beside its major role as an antioxidant and free radical scavenger vitamin C exerts a regulatory influence on angiogenesis. Additionally, epidemiologic studies show an association between vitamin C levels and incidence of cancer.We therefore hypothesize that variations in genes encoding for vitamin C transporter proteins may predict outcome in patients (pts) with metastatic colorectal cancer (mCRC) treated with FOLFIRI and bevacizumab (bev). Methods: Theimpact of 3 functional SNPs within the SVCT1, SVCT2 and Glut1 genes on outcome was evaluated in 292 pts with mCRC treated with first-line FOLFIRI/bev in the randomized phase III FIRE-3 trial. 294 pts receiving FOLFIRI and cetuximab (cet) (FIRE-3) served as a negative control. Genomic DNA was extracted from formalin fixed paraffin embedded tissue and SNPs were analyzed by PCR-based direct sequencing. Results: Baseline characteristics in the FOLFIRI/bev arm were as follows: female/male 99/193; median age = 65y andmedian PFS/OS = 10.1/24.2 months (mts). The SVCT1 rs11242462 SNP showed significant association with PFS. T allele carriers had a longer median PFS compared to those with a C/C genotype (10.7 vs 9.7 mts) in both univariate (HR 0.77, p = 0.046) and multivariate analysis (HR 0.73, p = 0.028). The effect on outcome was most significant among KRAS mutant pts. Here, T allele carriers showed a markedly prolonged PFS and OS compared to pts with a C/C genotype (12.5 vs 7.0 mts, HR 0.50, p = 0.018 and 32.8 vs 14.7 mts, HR 0.45, p = 0.009). These associations remained significant in multivariate analyses (p = 0.009 and p = 0.021, respectively). However, the favorable impact on outcome was not observed among T allele carriers treated with FOLFIRI/cet. Conclusions: Our results provide the first evidence that the SVCT1 polymorphism rs11242462 might serve as a predictive marker in pts with mCRC treated with FOLFIRI/bev in the first-line setting. Targeting vitamin C transporter proteins might be a promising approach to further improve treatment options against mCRC and to overcome resistance to anti-angiogenic therapy.

scholarly journals Randomized phase III trial of S-1 versus capecitabine in the first-line treatment of metastatic colorectal cancer: SALTO study by the Dutch Colorectal Cancer Group

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 ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Metastatic Colorectal Cancer ◽  
Phase Iii ◽  
Line Treatment ◽  
First Line ◽  
Phase Iii Trial ◽  
Cancer Group ◽  
First Line Treatment

Phase III Multicenter Randomized Trial of Oxaliplatin Added to Chronomodulated Fluorouracil–Leucovorin as First-Line Treatment of Metastatic Colorectal Cancer

2000 ◽  
Vol 18 (1) ◽  
pp. 136-136 ◽  
Author(s):  
S. Giacchetti ◽  
B. Perpoint ◽  
R. Zidani ◽  
N. Le Bail ◽  
R. Faggiuolo ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Metastatic Colorectal Cancer ◽  
Objective Response ◽  
Sensory Neuropathy ◽  
Phase Iii ◽  
Line Treatment ◽  
Survival Times ◽  
First Line ◽  
Grade 3 ◽  
First Line Treatment

PURPOSE: To study how adding oxaliplatin (l-OHP) to chronomodulated fluorouracil (5-FU)–leucovorin (LV) affected the objective response rate, as first-line treatment of metastatic colorectal cancer. PATIENTS AND METHODS: Two hundred patients from 15 institutions in four countries were randomly assigned to receive a 5-day course of chronomodulated 5-FU and LV (700 and 300 mg/m2/d, respectively; peak delivery rate at 0400 hours) with or without l-OHP on the first day of each course (125 mg/m2, as a 6-hour infusion). Each course was repeated every 21 days. Response was assessed by extramural review of computed tomography scans. RESULTS: Grade 3 to 4 toxicity from 5-FU–LV occurred in ≤ 5% of the patients (≤ 1% of the courses). Grade 3 to 4 diarrhea occurred in 43% of the patients given l-OHP (10% of the courses), and less than 2% of the patients had severe hematotoxicity. Thirteen percent of the patients had moderate functional impairment from peripheral sensory neuropathy. Sixteen percent of the patients receiving 5-FU–LV had an objective response (95% confidence interval [CI], 9% to 24%), compared with 53% of those receiving additional l-OHP (95% CI, 42% to 63%) (P < .001). The median progression-free survival time was 6.1 months with 5-FU–LV (range, 4.1 to 7.4 months) and 8.7 months (7.4 to 9.2 months) with l-OHP and 5-FU–LV (P = .048). Median survival times were 19.9 and 19.4 months, respectively. CONCLUSION: By chronomodulating 5-FU–LV, we were able to add l-OHP without compromising dose-intensities. l-OHP significantly improved the antitumor efficacy of this regimen.

Irinotecan in the Treatment of Colorectal Cancer: Clinical Overview

2001 ◽  
Vol 19 (5) ◽  
pp. 1501-1518 ◽  
Author(s):  
Udo Vanhoefer ◽  
Andreas Harstrick ◽  
Wolf Achterrath ◽  
Shousong Cao ◽  
Siegfried Seeber ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Metastatic Colorectal Cancer ◽  
Topoisomerase I ◽  
Clinical Status ◽  
Phase Iii ◽  
Line Treatment ◽  
Second Line ◽  
First Line ◽  
Phase Iii Trials ◽  
Line Chemotherapy

PURPOSE AND METHODS: For more than three decades, the therapeutic options for patients with advanced colorectal cancer have almost exclusively been based on fluoropyrimidines. With the recognition that topoisomerase-I (TOP-I) is an important therapeutic target in cancer therapy, irinotecan, a semisynthetic TOP-I–interactive camptothecin derivative, has been clinically established in the treatment of colorectal cancer. RESULTS: Irinotecan was investigated as second-line chemotherapy after prior treatment with fluorouracil (FU)-based regimens in two large randomized phase III trials comparing irinotecan with either best supportive care or an infusional FU/leucovorin (LV) regimen. The outcomes of these trials established irinotecan as the standard therapy in the second-line treatment of colorectal cancer. The therapeutic value of irinotecan in the first-line treatment of metastatic colorectal cancer was investigated in two large randomized phase III trials comparing the combination of irinotecan and FU/LV with FU/LV alone. Both trials demonstrated significant superior efficacy for the combination of irinotecan and FU/LV in terms of response rate, median time to disease progression, and median survival time. Consequently, the combination of irinotecan and FU/LV has been approved as first-line chemotherapy for patients with metastatic colorectal cancer and constitutes the reference therapy against which other treatment options must be tested in the future. CONCLUSION: In this review, the clinical rationale and update of the present clinical status of irinotecan in the treatment of colorectal cancer and future prospects of irinotecan-based combinations are discussed.

scholarly journals Cost-effectiveness analysis of cetuximab combined with chemotherapy as a first-line treatment for patients with RAS wild-type metastatic colorectal cancer based on the TAILOR trial

BMJ Open ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. e030738 ◽  
Author(s):  
Huijuan Wang ◽  
Lingfei Huang ◽  
Peng Gao ◽  
Zhengyi Zhu ◽  
Weifeng Ye ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Cost Effectiveness ◽  
Metastatic Colorectal Cancer ◽  
Survival Benefit ◽  
Cost Effective ◽  
Phase Iii ◽  
Line Treatment ◽  
Wild Type ◽  
First Line ◽  
First Line Treatment

ObjectivesCetuximab plus leucovorin, fluorouracil and oxaliplatin (FOLFOX-4) is superior to FOLFOX-4 alone as a first-line treatment for patients with metastatic colorectal cancer with RAS wild-type (RAS wt mCRC), with significantly improved survival benefit by TAILOR, an open-label, randomised, multicentre, phase III trial. Nevertheless, the cost-effectiveness of these two regimens remains uncertain. The following study aims to determine whether cetuximab combined with FOLFOX-4 is a cost-effective regimen for patients with specific RAS wt mCRC in China.DesignA cost-effectiveness model combined decision tree and Markov model was built to simulate pateints with RAS wt mCRC based on health states of dead, progressive and stable. The health outcomes from the TAILOR trial and utilities from published data were used respectively. Costs were calculated with reference to the Chinese societal perspective. The robustness of the results was evaluated by univariate and probabilistic sensitivity analyses.ParticipantsThe included patients were newly diagnosed Chinese patients with fully RAS wt mCRC.InterventionsFirst-line treatment with either cetuximab plus FOLFOX-4 or FOLFOX-4.Main outcome measuresThe primary outcomes are costs, quality-adjusted life-years (QALYs) and incremental cost-effectiveness ratios (ICERs).ResultsBaseline analysis disclosed that the QALYs was increased by 0.383 caused by additional cetuximab, while an increase of US$62 947 was observed in relation to FOLFOX-4 chemotherapy. The ICER was US$164 044 per QALY, which exceeded the willingness-to-pay threshold of US$28 106 per QALY.ConclusionsDespite the survival benefit, cetuximab combined with FOLFOX-4 is not a cost-effective treatment for the first-line regime of patients with RAS wt mCRC in China.Trial registration numberTAILOR trial (NCT01228734); Post-results.

scholarly journals Mutational Analysis of Patients With Colorectal Cancer in CALGB/SWOG 80405 Identifies New Roles of Microsatellite Instability and Tumor Mutational Burden for Patient Outcome

2019 ◽  
Vol 37 (14) ◽  
pp. 1217-1227 ◽  
Author(s):  
Federico Innocenti ◽  
Fang-Shu Ou ◽  
Xueping Qu ◽  
Tyler J. Zemla ◽  
Donna Niedzwiecki ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Microsatellite Instability ◽  
Metastatic Colorectal Cancer ◽  
Mutational Analysis ◽  
Gene Mutations ◽  
Phase Iii ◽  
First Line ◽  
Mutational Burden ◽  
Significant Difference ◽  
Tumor Mutational Burden

PURPOSE CALGB/SWOG 80405 was a randomized phase III trial that found no statistically significant difference in overall survival (OS) in patients with first-line metastatic colorectal cancer treated with chemotherapy plus either bevacizumab or cetuximab. Primary tumor DNA from 843 patients has been used to discover genetic markers of OS. PATIENTS AND METHODS Gene mutations were determined by polymerase chain reaction. Microsatellite status was determined by genotyping of microsatellites. Tumor mutational burden (TMB) was determined by next-generation sequencing. Cox proportional hazard models were used, with adjusting factors. Interaction of molecular alterations with either the bevacizumab or the cetuximab arms was tested. RESULTS Patients with high TMB in their tumors had longer OS than did patients with low TMB (hazard ratio [HR], 0.73 [95% CI, 0.57 to 0.95]; P = .02). In patients with microsatellite instability–high (MSI-H) tumors, longer OS was observed in the bevacizumab arm than in the cetuximab arm (HR, 0.13 [95% CI, 0.06 to 0.30]; interaction P < .001 for interaction between microsatellite status and the two arms). Patients with BRAF mutant tumors had shorter OS than did patients with wild-type (WT) tumors (HR, 2.01 [95% CI, 1.49 to 2.71]; P < .001). Patients with extended RAS mutant tumors had shorter OS than did patients with WT tumors (HR, 1.52 [95% CI, 1.26 to 1.84]; P < .001). Patients with triple-negative tumors (WT for NRAS/ KRAS/ BRAF) had a median OS of 35.9 months (95% CI, 33.0 to 38.8 months) versus 22.2 months (95% CI, 19.6 to 24.4 months ) in patients with at least one mutated gene in their tumors ( P < .001). CONCLUSION In patients with metastatic colorectal cancer treated in first line, low TMB, and BRAF and RAS mutations are negative prognostic factors. Patients with MSI-H tumors benefited more from bevacizumab than from cetuximab, and studies to confirm this effect of MSI-H are warranted.

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