The IMpower150 trial showed significant improvements in progression-free and overall survival with atezolizumab plus bevacizumab plus carboplatin plus paclitaxel (ABCP) versus the standard-of-care ...bevacizumab plus carboplatin plus paclitaxel (BCP) in chemotherapy-naive patients with non-squamous non-small-cell lung cancer. Here, we report the efficacy of ABCP or atezolizumab plus carboplatin plus paclitaxel (ACP) versus BCP in key patient subgroups.
IMpower150 was a randomised, open-label, phase 3 study done at 240 academic medical centres and community oncology practices across 26 countries worldwide. Patients with chemotherapy-naive metastatic non-small-cell lung cancer were randomly assigned (1:1:1) to receive ABCP, ACP, or BCP every three weeks. The co-primary endpoints were overall survival and investigator-assessed progression-free survival in intention-to-treat wild-type patients (patients with epidermal growth factor receptor EGFR or anaplastic lymphoma kinase ALK genetic alterations were excluded). Efficacy was assessed in key subgroups within the intention-to-treat population, including patients with EGFR mutations (both sensitising and non-sensitising; EGFR-positive) previously treated with one or more tyrosine kinase inhibitors and patients with baseline liver metastases. Overall survival in the intention-to-treat population was included among secondary efficacy endpoints. Exploratory endpoints included the proportion of patients achieving an objective response in the intention-to-treat population, including EGFR-positive patients and patients with baseline liver metastases. Data are reported as per the Jan 22, 2018, data cutoff date, at which the number of coprimary prespecified overall survival events was met in the ABCP versus BCP groups. This trial is registered with ClinicalTrials.gov, number NCT02366143, and is ongoing.
Between March 31, 2015, and Dec 30, 2016, 1202 patients were enrolled. 400 patients were randomly assigned to ABCP, 402 to ACP, and 400 to BCP. In EGFR-positive patients (124 of 1202), median overall survival was not estimable (NE; 95% CI 17·0-NE) with ABCP (34 of 400) and 18·7 months (95% CI 13·4-NE) with BCP (45 of 400; hazard ratio HR 0·61 95% CI 0·29-1·28). Improved overall survival with ABCP versus BCP was observed in patients with sensitising EGFR mutations (median overall survival NE 95% CI NE-NE with ABCP 26 of 400 vs 17·5 months 95% CI 11·7-NE with BCP 32 of 400; HR 0·31 95% CI 0·11-0·83) and in the intention-to-treat population (19·8 months 17·4-24·2 vs 14·9 months 13·4-17·1; HR 0·76 0·63-0·93). Improved median overall survival with ABCP versus BCP was seen in patients with baseline liver metastases (13·3 months 11·6-NE with ABCP 52 of 400 vs 9·4 months 7·9-11·7 with BCP 57 of 400; HR 0·52 0·33-0·82). Median overall survival was 21·4 months (95% CI 13·8-NE) with ACP versus 18·7 months (95% CI 13·4-NE) with BCP in EGFR-positive patients (HR 0·93 95% CI 0·51-1·68). No overall survival benefit was seen with ACP versus BCP in patients with sensitising EGFR mutations (HR 0·90 95% CI 0·47-1·74), in the intention-to-treat population (HR 0·85 0·71-1·03), or in patients with baseline liver metastases (HR 0·87 0·57-1·32). In the intention-to-treat safety-evaluable population, grade 3-4 treatment-related events occurred in 223 (57%) patients in the ABCP group, in 172 (43%) in the ACP group, and in 191 (49%) in the BCP group; 11 (3%) grade 5 adverse events occurred in the ABCP group, as did four (1%) in the ACP group, and nine (2%) in the BCP group.
Improved survival was noted for patients treated with ABCP compared with those given BCP in the intention-to-treat population, and in patients with baseline liver metastases. The overall survival signal in the subgroup of patients with EGFR sensitising mutations warrants further study.
F. Hoffmann-La Roche, Genentech.
Inflammation in the tumor microenvironment is a complicit and known carcinogenesis driver. Inhibition of IL-1β, one of the most abundant and influential cytokines in the tumor microenvironment, may ...enhance the efficacy of PD-1. In a
analysis of phase III cardiovascular CANTOS trial, canakinumab, a monoclonal anti-IL-1β antibody, significantly reduced lung cancer incidence. Immune checkpoint inhibition (ICI) is the standard of care in non-small-cell lung cancer. However, ICI efficacy is heavily impacted by programmed death ligand-1 (PD-L1) status. Most patients with non-small-cell lung cancer have low PD-L1 expression levels. Thus, combinational strategies are needed to improve ICI efficacy and expand its use. Here, we describe the preclinical and clinical evidence to support the combination of IL-1β and PD-1 under investigation in the CANOPY program. The perioperative use of canakinumab with or without PD-1 inhibition in the CANOPY-N trial is described as a potential chemotherapy-free immunotherapy strategy.
IL-1β is a small molecule involved in the spreading of cancer cells and scouting for cells that work against the body’s protective inflammatory response. In a follow-up analysis of the CANTOS study, people with atherosclerosis who received canakinumab, a drug which limits the activity of IL-1β in the body, were diagnosed with lung cancer less often than people who received an inactive substance. Immunotherapy is a treatment that can boost the natural defenses of the immune system, but how well it works varies from patient to patient. Recent efforts aim to understand whether blocking unhealthy inflammation with canakinumab and stimulating the body’s protective system with immunotherapy at the same time could be an efficacious treatment for patients with lung cancer. Currently there are limited data from experiments in cell and animal models; however, data from the ongoing CANOPY-N clinical trial, which is investigating this treatment combination prior to surgery for patients with lung cancer, are expected by the first half of this year.
Canakinumab is a human IgGκ monoclonal antibody, with high affinity and specificity for IL-1β. The Canakinumab Anti-Inflammatory Thrombosis Outcome Study (CANTOS) trial, evaluating canakinumab for ...cardiovascular disease, provided the first signal of the potential of IL-1β inhibition on lung cancer incidence reduction. Here, we describe the rationale and design for CANOPY-N, a randomized Phase II trial evaluating IL-1β inhibition with or without immune checkpoint inhibition as neoadjuvant treatment in patients with non-small-cell lung cancer. Patients with stage IB to IIIA non-small-cell lung cancer eligible for complete resection will receive canakinumab or pembrolizumab as monotherapy, or in combination. The primary end point is major pathological response by central review; secondary end points include overall response rate, major pathological response (local review), surgical feasibility rate and pharmacokinetics.
A previous study showed that canakinumab reduced the risk of lung cancer in patients with heart disease. Canakinumab blocks an inflammatory protein called IL-1β that is involved in cancer. Anti-cancer drugs used before surgery (‘neo-adjuvant’) can improve the success rate of surgery and may help prevent the cancer from returning. Neo-adjuvant trials help us understand how the drugs work and how they affect cancer. CANOPY-N (NCT03968419) is an ongoing randomized, exploratory, Phase II clinical trial testing canakinumab and pembrolizumab (a different cancer immunotherapy), alone or combined, for patients with early non-small-cell lung cancer. The study will test whether treatment can kill most cancer cells in the surgery sample (‘major pathological response’). It will also investigate other effects on cancer biology, levels of molecules that measure possible clinical benefit (‘biomarkers’) and side effects.
Data Mining on DNA Sequences of Hepatitis B Virus Kwong-Sak Leung; Kin Hong Lee; Jin-Feng Wang ...
IEEE/ACM transactions on computational biology and bioinformatics,
03/2011, Letnik:
8, Številka:
2
Journal Article
Recenzirano
Odprti dostop
Extraction of meaningful information from large experimental data sets is a key element in bioinformatics research. One of the challenges is to identify genomic markers in Hepatitis B Virus (HBV) ...that are associated with HCC (liver cancer) development by comparing the complete genomic sequences of HBV among patients with HCC and those without HCC. In this study, a data mining framework, which includes molecular evolution analysis, clustering, feature selection, classifier learning, and classification, is introduced. Our research group has collected HBV DNA sequences, either genotype B or C, from over 200 patients specifically for this project. In the molecular evolution analysis and clustering, three subgroups have been identified in genotype C and a clustering method has been developed to separate the subgroups. In the feature selection process, potential markers are selected based on Information Gain for further classifier learning. Then, meaningful rules are learned by our algorithm called the Rule Learning, which is based on Evolutionary Algorithm. Also, a new classification method by Nonlinear Integral has been developed. Good performance of this method comes from the use of the fuzzy measure and the relevant nonlinear integral. The nonadditivity of the fuzzy measure reflects the importance of the feature attributes as well as their interactions. These two classifiers give explicit information on the importance of the individual mutated sites and their interactions toward the classification (potential causes of liver cancer in our case). A thorough comparison study of these two methods with existing methods is detailed. For genotype B, genotype C subgroups C1, C2, and C3, important mutation markers (sites) have been found, respectively. These two classification methods have been applied to classify never-seen-before examples for validation. The results show that the classification methods have more than 70 percent accuracy and 80 percent sensitivity for most data sets, which are considered high as an initial scanning method for liver cancer diagnosis.
We hypothesized that liver-derived mRNA, such as ALB (albumin) mRNA, would be released into human plasma with liver cell death.
We genotyped ALB mRNA molecules in samples of plasma and whole blood ...from liver and bone marrow transplant recipients by RNA single-nucleotide polymorphism analysis. Plasma and whole blood ALB mRNA genotypes were compared with the DNA genotypes of the recipients and donors. A reverse-transcription quantitative real-time PCR assay was used to measure plasma ALB mRNA concentrations in 107 patients hepatocellular carcinoma (HCC), cirrhosis, or chronic hepatitis B (CHB) and 207 healthy controls.
The RNA genotype data revealed ALB mRNA in plasma to be liver derived, whereas tissue compartments other than the liver also contributed to the ALB mRNA detected in whole blood. Statistically significant increases in plasma ALB mRNA concentrations were observed for HCC, cirrhosis, and active CHB, compared with controls. A cutoff of 835 copies/mL of plasma ALB mRNA identified by ROC curve analysis showed 85.5% diagnostic sensitivity and 92.8% diagnostic specificity for the detection of liver pathologies. Only 21.5% of patients with liver pathologies had increased alanine aminotransferase (ALT) activities, whereas 73.8% had increased plasma ALB mRNA concentrations. Only 48.6% of the HCC patients had increased serum alpha-fetoprotein concentrations, whereas 91.4% had increased plasma ALB mRNA concentrations.
ALB mRNA is liver specific in plasma, but not in whole blood. Plasma ALB mRNA is increased in some liver pathologies and may be more diagnostically sensitive than alpha-fetoprotein and ALT.
There is little information regarding simultaneous investigations of thromboxane A2(TXA2) lipid peroxidation and Bcl-2, three cancer-related agents, and analyses of their relationships in lung ...cancer. The present study was to study thromboxane B2(TXB2), a stable metabolite of TXA2, lipid peroxidation and Bcl-2 expression in 52 non-small cell lung carcinoma (NSCLC) tissue samples. The level of thiobarbituric acid reactive substances (TBARS), an index for lipid peroxidation was significantly increased in the lung tumor tissues, compared with non-tumor tissues. TXB2was much higher in the tumor tissues than non-tumor tissues. Interestingly, the concentration of TXB2in samples from those who smoked was higher than that from those who did not smoke. The expression of Bcl-2 was significantly elevated in the tumor tissues, compared to the non-tumor tissues. There was also a positive correlation between TXB2and TBARS in tumor tissues; advanced stage cancers had higher levels of TXB2. This finding supports the idea that TXB2may have a role in promoting tumor growth. In conclusion, our study demonstrates that the production of TXB2is increased in lung tumor tissues and that such an increase can result in lipid peroxidation which may be met by an elevation in Bcl-2 expression.
This is a randomized phase II study designed to compare the toxicity profile of a non-platinum-based with a platinum-based regimen in the treatment of advanced non-small cell lung cancer.
Eighty-nine ...chemotherapy-naïve patients were randomized either to gemcitabine (1,000 mg/m2, 30-min infusion on days 1, 8 and 15) and oral etoposide (50 mg, days 1-14; GE group) or gemcitabine at the same schedule and cisplatin (75 mg/m2 on day 15; GP group). The primary endpoint is toxicity, and secondary endpoints include response rate, survival outcome and quality of life (QOL).
The incidence of WHO grade 3 or 4 anemia, neutropenia and thrombocytopenia was 29, 44 and 22% (GE group), and 28, 49 and 23% (GP group), respectively (p = 0.75, 0.95 and 0.87, respectively). The rate of grade 2 or above nausea was numerically higher in the GP arm, but the difference was not statistically significant (GE 15.5%, GP 27.7%, p = 0.20). The rate of vomiting in the GE and GP arms was 20.0 and 20.5%, respectively (p = 0.96). However, subjective changes in QOL scores on nausea and vomiting were significantly higher in the GP arm (p = 0.001). Other symptoms including sore mouth and hair loss were significantly higher in the GE arm (p = 0.003 and 0.007, respectively). There were also significant differences observed in emotional (p = 0.014), cognitive (p = 0.028) and social functioning (p = 0.034) in favor of GP. The differences in tumor response (35.5 and 46.5% for GE and GP, respectively) were not significantly different. Median time to disease progression (33.8 and 40.7 weeks, respectively) and overall survival (41.4 and 57.3 weeks, respectively) were of borderline significance in favor of the GP arm (p = 0.055).
This toxicity profile of GE is similar to GP, but the apparent inferior efficacy may discourage further investigation.
Best Equity Ideas Garg, Sunil; Mowat, Adrian; Lee, Tony SK
J.P. Morgan Equities Research Reports,
03/2015
Report
In this Best Equity Ideas report, we present our latest country and industry strategy views along with our top buy and sell ideas from across our research teams in the region. We have surveyed our ...universe of coverage and refreshed our regional Analyst Focus List (AFL), which contains one top buy...
Best Equity Ideas Garg, Sunil; Mowat, Adrian; Lee, Tony SK
J.P. Morgan Equities Research Reports,
08/2014
Report
In this Best Equity Ideas report, we present our latest country and industry strategy views along with our top buy and sell ideas from across our research teams in Asia ex-Japan. We have surveyed our ...universe of coverage and refreshed our regional Analyst Focus List (AFL), which contains one top ...
PDF
