Dataset Information

Prognostic Factor Analysis of Overall Survival in Gastric Cancer from Two Phase III Studies of Second-line Ramucirumab (REGARD and RAINBOW) Using Pooled Patient Data.

ABSTRACT:

Purpose

To identify baseline prognostic factors for survival in patients with disease progression, during or after chemotherapy for the treatment of advanced gastric or gastroesophageal junction (GEJ) cancer.

Materials and methods

We pooled data from patients randomized between 2009 and 2012 in 2 phase III, global double-blind studies of ramucirumab for the treatment of advanced gastric or GEJ adenocarcinoma following disease progression on first-line platinum- and/or fluoropyrimidine-containing therapy (REGARD and RAINBOW). Forty-one key baseline clinical and laboratory factors common in both studies were examined. Model building started with covariate screening using univariate Cox models (significance level=0.05). A stepwise multivariable Cox model identified the final prognostic factors (entry+exit significance level=0.01). Cox models were stratified by treatment and geographic region. The process was repeated to identify baseline prognostic quality of life (QoL) parameters.

Results

Of 1,020 randomized patients, 953 (93%) patients without any missing covariates were included in the analysis. We identified 12 independent prognostic factors of poor survival: 1) peritoneal metastases; 2) Eastern Cooperative Oncology Group (ECOG) performance score 1; 3) the presence of a primary tumor; 4) time to progression since prior therapy <6 months; 5) poor/unknown tumor differentiation; abnormally low blood levels of 6) albumin, 7) sodium, and/or 8) lymphocytes; and abnormally high blood levels of 9) neutrophils, 10) aspartate aminotransferase (AST), 11) alkaline phosphatase (ALP), and/or 12) lactate dehydrogenase (LDH). Factors were used to devise a 4-tier prognostic index (median overall survival [OS] by risk [months]: high=3.4, moderate=6.4, medium=9.9, and low=14.5; Harrell's C-index=0.66; 95% confidence interval [CI], 0.64-0.68). Addition of QoL to the model identified patient-reported appetite loss as an independent prognostic factor.

Conclusions

The identified prognostic factors and the reported prognostic index may help clinical decision-making, patient stratification, and planning of future clinical studies.

SUBMITTER: Fuchs CS

PROVIDER: S-EPMC5489542 | biostudies-literature | 2017 Jun

REPOSITORIES: biostudies-literature

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Publications

Prognostic Factor Analysis of Overall Survival in Gastric Cancer from Two Phase III Studies of Second-line Ramucirumab (REGARD and RAINBOW) Using Pooled Patient Data.

Fuchs Charles S CS Muro Kei K Tomasek Jiri J Van Cutsem Eric E Cho Jae Yong JY Oh Sang-Cheul SC Safran Howard H Bodoky György G Chau Ian I Shimada Yasuhiro Y Al-Batran Salah-Eddin SE Passalacqua Rodolfo R Ohtsu Atsushi A Emig Michael M Ferry David D Chandrawansa Kumari K Hsu Yanzhi Y Sashegyi Andreas A Liepa Astra M AM Wilke Hansjochen H

Journal of gastric cancer 20170616 2

<h4>Purpose</h4>To identify baseline prognostic factors for survival in patients with disease progression, during or after chemotherapy for the treatment of advanced gastric or gastroesophageal junction (GEJ) cancer.<h4>Materials and methods</h4>We pooled data from patients randomized between 2009 and 2012 in 2 phase III, global double-blind studies of ramucirumab for the treatment of advanced gastric or GEJ adenocarcinoma following disease progression on first-line platinum- and/or fluoropyrimi ...[more]

PMID: 28680718

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Project description:BackgroundWeight loss is common in advanced gastric and gastroesophageal junction adenocarcinoma (G/GEA); however, the prognostic implications of weight loss during the first cycle (C1) of chemotherapy remain poorly characterized. In this study, we investigated the impact of early weight loss during systemic treatment as a potential prognostic factor for overall survival (OS) in patients with advanced G/GEA.Materials and methodsWe performed a post hoc analysis of three phase III studies of ramucirumab. Patients were categorized into two groups: weight loss of ≥3% and <3% based on weight change during C1 (3-4 weeks) of treatment. OS by weight groups was assessed for each study and as a pooled meta-analysis. The effect of C1 weight change on patient survival was evaluated using univariate and multivariate Cox models.ResultsA total of 1,464 patients with weight data at the end of C1 were analyzed: REGARD (n = 311), RAINBOW (n = 591), and RAINFALL (n = 562). For all three studies, there were fewer patients in the weight loss ≥3% than <3% group. OS was numerically shorter for patients with weight loss of ≥3% than for patients with weight loss of <3% during C1 irrespective of treatment arm. Similar treatment independent effects of early weight loss on OS were observed in the meta-analysis. Overall, early weight loss ≥3% was associated with shorter survival in patients receiving active drug as well as placebo/best supportive care.ConclusionThis large post hoc analysis demonstrated that weight loss of ≥3% during C1 was a negative prognostic factor for OS in patients with advanced G/GEA.Implications for practiceThis comprehensive analysis examining early weight loss during systemic treatment as a predictor of survival outcomes in patients with advanced gastric and gastroesophageal junction adenocarcinoma (G/GEA) includes a large sample size, reliable on-treatment data reported in well-conducted phase III clinical trials, and global representation of cancer patients with advanced G/GEA. Understanding the impact of on-treatment weight loss is clinically relevant and may represent an opportunity for targeted interventions.

Project description:PurposeSecond-line treatment with ramucirumab-paclitaxel has demonstrated statistically significant and clinically meaningful survival outcomes compared to paclitaxel-alone in patients with advanced gastric cancer (HR=0.807, 95% CI 0.678-0.962; P=0.017). Post hoc, exploratory analyses of RAINBOW patient data were performed to examine whether ascites impacted the efficacy and safety of ramucirumab-paclitaxel.Patients and methodsPatients were placed in with- or without-ascites subgroups based on baseline information collected on case report forms. The Kaplan-Meier method was used to estimate median progression-free survival (PFS) and overall survival (OS) of the ascites subgroups. HR and 95% CI were calculated using the Cox proportional hazards model. Survival distributions within the two arms in each ascites subgroup were compared using the log-rank test.ResultsThere were 36% of RAINBOW trial patients (237/665) that had ascites at baseline (with-ascites subgroup); 64% of patients (428/665) had no baseline ascites (without-ascites subgroup). Most baseline characteristics were balanced. The with-ascites subgroup had a higher percentage of patients with peritoneal metastases (91% vs 23%) as expected. Overall survival for the with-ascites subgroup was worse than for the without-ascites subgroup (median OS for placebo-treated patients: 5.2 vs 8.5 months, respectively). However, OS treatment effects did not seem to differ significantly among patients with ascites (OS stratified HR=0.864, 95% CI=0.644-1.161; P=0.3362) vs those without ascites (OS stratified HR=0.745, 95% CI=0.593-0.936; P=0.0115). Similar results were observed for PFS. Ramucirumab treatment was associated with a greater incidence of all-grade vomiting for the with-ascites subgroup vs the without-ascites subgroup (ramucirumab arm: 39.2% vs 18.8%; placebo arm: 23.3% vs 19.5%, respectively). The incidence of adverse events of special interest was not elevated among the ramucirumab-treated ascites subgroup over the without-ascites subgroup.ConclusionThe benefit/risk profile of ramucirumab-paclitaxel remains favorable in patients with ascites and is consistent with the findings of the RAINBOW trial.

Project description:BackgroundGastric cancer (GC) is a heterogenous disease consisted of several subtypes with distinct molecular traits. The clinical implication of molecular classification has been limited especially in association with treatment efficacy of ramucirumab or various targeted agents.MethodsWe conducted a prospective non-randomized phase II single-arm trial of ramucirumab plus paclitaxel as second-line chemotherapy in 62 patients with metastatic GC who failed to respond to first-line fluoropyrimidine plus platinum treatment. For integrative molecular characterization, all patients underwent pre-ramucirumab treatment tissue biopsy for whole-exome/whole-transcriptome sequencing to categorize patients based on molecular subtypes. We also systematically performed integrative analysis, combining genomic, transcriptomic, and clinical features, to identify potential molecular predictors of sensitivity and resistance to ramucirumab treatment.ResultsSixty-two patients were enrolled in this study between May 2016 and October 2017. Survival follow-up in all patients was completed as of the date of cut-off on January 2, 2019. No patient attained complete response (CR), while 22 patients achieved confirmed partial response (PR), resulting in a response rate (RR) of 35.5% (95% CI, 23.6-47.4). According to TCGA molecular classification, there were 30 GS, 18 CIN, 3 EBV, and 0 MSI tumors. The RR was 33% in GS (10/30), 33% in CIN (6/18), and 100% in EBV-positive GC patients with significant statistical difference for EBV(+) against EBV(-) tumors (P?=?0.016; chi-squared test). Moreover, responsive patients were marked by activation of angiogenesis, VEGF, and TCR-associated pathways, while non-responder patients demonstrated enrichments of sonic hedgehog signaling pathway and metabolism activity. Integrative multi-layer data analysis further identified molecular determinants, including EBV status, and somatic mutation in GNAQ to ramucirumab activity.ConclusionsProspective molecular characterization identified a subset of GC patients with distinct clinical response to ramucirumab therapy, and our results demonstrate the feasibility of personalized therapeutic opportunities in gastric cancer.Trial registrationThe study was registered on ClinicalTrial.gov ( NCT02628951 ) on June 12, 2015.

Project description:Background Nanoparticle albumin-bound paclitaxel (nab-PTX) has shown non-inferiority to paclitaxel (PTX) as second-line therapy for advanced gastric cancer (AGC) with fewer infusion-related reactions. The efficacy and safety of nab-PTX plus ramucirumab (RAM) was reported in a phase II trial; however, there is no randomized trial comparing this regimen with PTX plus RAM in patients with AGC. This retrospective study aimed to investigate the efficacy and safety of nab-PTX plus RAM versus PTX plus RAM in patients with AGC. Methods This study included patients with AGC who received nab-PTX plus RAM from September 2017 to January 2019 or PTX plus RAM from June 2015 to August 2017 as second-line chemotherapy in our hospital. Results A total of 113 and 138 patients who received nab-PTX plus RAM and PTX plus RAM, respectively, were analyzed. Median progression-free survival (PFS) was 3.9?months (95% confidence interval [CI]: 3.4–4.3) in the nab-PTX plus RAM group and 3.9?months (95% CI: 3.1–4.7) in the PTX plus RAM group (hazard ratio [HR]: 1.08; 95% CI: 0.83–1.40; P?=?0.573). Median overall survival (OS) was 10.9?months (95% CI: 9.3–12.7) in the nab-PTX plus RAM group and 10.3?months (95% CI: 8.5–12.0) in the PTX plus RAM group (hazard ratio: 0.82; 95% CI: 0.61–1.10; P?=?0.188). In patients with moderate/massive ascites, favorable outcomes for progression-free survival were observed in the nab-PTX plus RAM group compared with the PTX plus RAM group. Although anemia and fatigue (any grade) were more frequent in the nab-PTX plus RAM group, discontinuation of study treatment was not increased in the nab-PTX plus RAM group. There was no occurrence of hypersensitivity reaction in the nab-PTX plus RAM group, while two patients (1.4%) experienced grade 3 hypersensitivity reactions in the PTX plus RAM group. Conclusions The combination of nab-PTX plus RAM showed a similar efficacy and safety profile to PTX plus RAM as second-line treatment for patients with AGC. Supplementary Information The online version contains supplementary material available at 10.1186/s12885-020-07614-6.

Project description:BackgroundIn the intent-to-treat (ITT) population of the RAINBOW study, objective response rate (ORR) was 28% and 16% in the ramucirumab and control arms, respectively. To further characterize tumor response, we present details on timing and extent of tumor shrinkage, as well as associations with symptom palliation.Materials and methodsTumor response was assessed with RECIST v1.1, and quality of life (QoL) was assessed with the European Organization for Research and Treatment of Cancer Quality-of-Life Questionnaire-Core 30 (EORTC QLQ-C30) v3.0. Prespecified and post hoc analyses were conducted in the ITT population, patients with measurable disease, or responders, and included best overall response (BOR), ORR, disease control rate (DCR), duration of response, time to response (TtR), change in tumor size, and associations of QoL with tumor shrinkage and BOR.ResultsIn both treatment arms, median TtR was 1.5 months. Responses were more durable in the ramucirumab versus control arm (median 4.4 vs. 2.8 months). In patients with measurable disease (78% of ITT), ORR was 36% versus 20%; DCR was 81% versus 61% in the ramucirumab versus control arms. Waterfall plots demonstrated more tumor shrinkage in the ramucirumab versus control arm. Regardless of treatment, tumor response and stable disease were associated with improved or stable QoL, with more tumor shrinkage associated with greater symptom palliation.ConclusionTreatment with ramucirumab plus paclitaxel yielded the highest ORR reported to date for patients with previously treated advanced gastric or gastroesophageal junction adenocarcinoma. Additional details demonstrate robustness of tumor response results. The extent of tumor shrinkage is directly associated with symptom palliation and should be considered when evaluating patient needs and treatment selection. Clinical trial identification number. NCT01170663.Implications for practiceRamucirumab plus paclitaxel is a recognized standard of care as it improves survival for patients with advanced gastric or gastroesophageal junction adenocarcinoma who have been previously treated with recommended first-line therapy. These additional data on tumor response demonstrate a positive association between tumor shrinkage and symptom palliation in a patient population that is often symptomatic. These observations included patients with nonmeasurable disease, a group of patients often underrepresented in clinical trials. This knowledge can inform treatment decisions, which align individual patient characteristics and needs with demonstrated benefits.

Project description:Background and objectiveGastric cancer has been associated with notable geographic heterogeneity in previous multi-regional studies. In particular, patients from Japan have better outcomes compared with patients from other regions. Here, we assess patient-focused outcomes for the subgroup of Japanese patients in the global RAINBOW study.MethodsQuality of life (QoL) was assessed using the European Organization for Research and Treatment of Cancer Quality-of-Life Questionnaire-Core 30 (QLQ-C30) at baseline and 6-week intervals. Investigators assessed performance status before each 4-week cycle. Time-to-deterioration in each QLQ-C30 scale was defined as randomization to first worsening of ≥ 10 points (on a 100-point scale). Time-to-deterioration in performance status was defined as first worsening to ≥ 2. Hazard ratios were estimated using Cox proportional hazards models.ResultsThe Japan subgroup contained 140 patients (ramucirumab plus paclitaxel, n = 68; placebo plus paclitaxel, n = 72); baseline QoL data were available for all patients. At baseline, QLQ-C30 scores were similar between study arms. Of the 15 QLQ-C30 scales, nine had a hazard ratio < 1, indicating similar or numerically longer time-to-deterioration in QoL for ramucirumab plus paclitaxel; all 95% confidence intervals included 1. Best mean change from baseline numerically favored ramucirumab plus paclitaxel in most QoL scales. The hazard ratios for time-to-deterioration of performance status to ≥ 2 were 0.64 in the Japan subgroup and 0.88 in the non-Asian subgroup. The Japan subgroup had better QoL at baseline compared with the non-Asian subgroup.ConclusionsTreatment with ramucirumab plus paclitaxel maintained QoL and performance status over time compared with placebo plus paclitaxel in the Japan subgroup of the RAINBOW trial. These data suggest that the heterogeneity in gastric cancer between geographic regions includes multiple measures of QoL.Trial registration numberNCT01170663 (first submitted 21 July, 2010).

Project description:IntroductionAdvanced gastric cancer (AGC) is one of the most common forms of cancer and remains difficult to cure. There is currently no recommended therapy for second-line AGC in the UK despite the availability of various interventions. This paper aims to compare different interventions for treatment of second-line AGC using more complex methods to estimate relative efficacy, fitting various parametric models and to compare results to those published adopting conventional methods of synthesis.MethodsSeven studies were identified in an existing literature review evaluating seven comparators, which formed a connected network of evidence. Citations were limited to randomised controlled trials in previously-treated AGC patients. Evidence quality was assessed using the Cochrane Collaboration's tool. Studies were assessed for the availability of Kaplan-Meier curves for overall survival. Individual patient data (IPD) were recreated using digitisation software along with a published algorithm in R. The data were analysed using multi-dimensional network meta-analysis (NMA) methods. A series of parametric models were fitted to the pseudo-IPD. Both fixed and random-effects models were fitted to explore long-term survival prospects based on extrapolation methods and estimated mean survival.ResultsRelative efficacy estimates were compared to those previously reported, which utilised conventional NMA methods. Results presented were consistent within findings from other publications and identified ramucirumab plus paclitaxel as the best treatment; however, all the treatments assessed were associated with poor survival prospects with mean survival estimates ranging from 5.0 to 12.7 months.ConclusionWhilst the approach adopted in this paper does not adjust for differences in trial patient populations and is particularly data-intensive, use of such sophisticated methods of evidence synthesis may be more informative for subsequent cost-effectiveness modelling and may have greater impact when considering an indication where observed data is particularly immature or survival prospects are more positive, which may then lead to more informative decision-making for drug reimbursement.

Dataset Information

Prognostic Factor Analysis of Overall Survival in Gastric Cancer from Two Phase III Studies of Second-line Ramucirumab (REGARD and RAINBOW) Using Pooled Patient Data.

Purpose

Materials and methods

Results

Conclusions

Publications

Prognostic Factor Analysis of Overall Survival in Gastric Cancer from Two Phase III Studies of Second-line Ramucirumab (REGARD and RAINBOW) Using Pooled Patient Data.

Similar Datasets

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