Non-small cell lung cancer (NSCLC) is the most common form of lung cancer. Recently, Durvalumab was approved as a potential immunotherapy for the management of unresectable stage III NSCLC. Economic studies from different parts of the world presented varying findings. Therefore, the objective of this study was to assess the cost-effectiveness of durvalumab consolidation therapy versus no consolidation therapy in patients with unresectable stage III NSCLC.PubMed, Embase, and Cochrane databases were searched till March 2022 to identify all the studies assessing the economic evaluation of durvalumab in patients with unresectable stage III NSCLC who had not progressed after chemoradiotherapy. Eligible studies were screened by two reviewers independently and the quality of included studies was evaluated using the updated version of Consolidated Health Economic Evaluation Reporting Standards (CHEERS 2022) checklists. All costs were converted to 2022 US dollars ($) by adjusting for the gross domestic product (GDP) deflator index and purchasing power parities for GDP.A total of seven studies were found to be eligible for inclusion. The majority of studies were conducted in the US (n = 3), while one study each was conducted in China, Italy, Switzerland, and the UK. The healthcare payers' perspective was most commonly observed among the included studies and the time horizon varied from 5 years to a lifetime. Three studies received funding from Industry. Four included studies used the Markov model, while two employed the semi-Markov model and, one study used decision-analytic model. The ICER of durvalumab consolidation therapy in the US was found to be in the range of $59,850 to $145,543 per Quality-Adjusted Life Years (QALY). Likewise, the ICER of durvalumab in European countries ranged from $62,021 to $76,068 per QALY. The ICER was below the implemented country-specific willingness-to-pay thresholds in all the included studies.Durvalumab consolidation therapy was found to be cost-effective compared to no consolidation therapy after chemoradiotherapy in stage-III NSCLC patients. 

http://www.lungcancerjournal.info/article/S0169500222004664/pdf

Cost-effectiveness analyses of durvalumab consolidation therapy versus no consolidation therapy after chemoradiotherapy in stage-III NSCLC.

The monoclonal antibody durvalumab, an immune‐checkpoint inhibitor (ICI) antiprogrammed death ligand 1 (PD‐L1), is available for unresectable stage III NSCLC patients as consolidation therapy following induction chemoradiotherapy, with very promising overall survival (OS) and progression‐free survial (PFS) results in registration trials. The purpose of this study was to provide policymakers with an estimate of the cost‐effectiveness of durvalumab in the treatment of non‐small cell lung cancer (NSCLC).

Cost‐effectiveness analysis of the new oncological drug durvalumab in Italian patients with stage III non‐small cell lung cancer

Objective The aim of this study was to evaluate the cost-effectiveness of durvalumab compared with Best supportive care (BSC) after chemoradiotherapy in patients with stage III non-small cell lung cancer from healthcare system perspective in China. Methods A dynamic state transition model was adopted to simulate life time, direct medical costs and QALYs. In the base case scenario, for patients with unresectable, stage Ⅲ non-small cell lung cancer whose disease has not progressed after platinum-based chemoradiation therapy, the treatment group would use durvalumab whereas the control group would use BSC. Clinical data and health utility were derived from the patient-level data of Asian ethnicity in the PACIFIC trial. Cost of drug acquisition, follow-up, medical service, inspection, terminal care and adverse event treatment were considered in this model. The cost of durvalumab was calculated based on retail prices and Patient Assistance Program. Results In the base case, the durvalumab group yielded an additional 2.60 LYs and 2.37QALYs (discounted), causing an additional cost of 0.459 million RMB and 0.109 million RMB without and with PAP, so the ICER was 193,898 RMB/QALY and 46,093.12 RMB/QALY respectively. Conclusions This study demonstrated that durvalumab can improve the survival of patients with unresectable, stage Ⅲ non-small cell lung cancer whose disease has not progressed after platinum-based chemoradiation therapy and would be a cost-effective option compared with BSC at a willingness to pay (WTP) threshold of 212676 RMB (three times GDP per capita of China in 2019).

/pdf/cost-effectiveness-analysis-of-durvalumab-as-a-maintenance-3d9rjaj0.pdf

Cost-effectiveness analysis of durvalumab as a maintenance treatment for patients with locally advanced, unresectable, stage Ⅲ nsclc in china

ABSTRACT Objectives The ALINE trial demonstrated the superiority of alectinib over platinum‐based chemotherapy in resected Anaplastic Lymphoma Kinase (ALK)‐positive non‐small‐cell lung cancer (NSCLC). Considering the high cost of alectinib, this study aimed to evaluate the economic value of alectinib compared to platinum‐based chemotherapy for treating early‐stage ALK‐positive NSCLC from the perspective of the Chinese health care system. Materials and Methods We developed a five‐state Markov model with monthly cycles to estimate the lifetime costs, life‐years (LYs), quality‐adjusted life‐years (QALYs), and incremental cost‐effectiveness ratios (ICERs) in terms of cost per LY gained and per QALY gained. Costs were obtained from database, expert opinions and published literature, and utilities were primarily derived from a multicenter cross‐sectional study based on the Chinese population. Costs and outcomes were discounted at 5% per year. Sensitivity analyses and scenario analyses were conducted to assess uncertainty in model results. Results Compared to platinum‐based chemotherapy, alectinib increased total costs by $16,245 and provided gains of 2.02 LYs and 1.84 QALYs over a lifetime horizon. ICERs were $8,052/LY and $8,806/QALY. The ICER in terms of cost per QALY gained was most sensitive to the outcome discount rate. Probabilistic sensitivity analysis indicated a 93% probability of alectinib being cost‐effective at a willing‐to pay (WTP) threshold of $12,367/QALY (1 GDP per capita), rising to 100% at $37,100/QALY (3 GDP per capita). Conclusion Alectinib appears to be the preferred cost‐effective option in the adjuvant treatment for Chinese patients with resected early‐stage ALK‐positive NSCLC. 

Cost‐Effectiveness Analysis of Adjuvant Alectinib versus Platinum‐Based Chemotherapy in Resected <scp>ALK</scp>‐Positive Non‐Small‐Cell Lung Cancer in the Chinese Health Care System

Background Durvalumab, used as consolidation immunotherapy, has shown to improve survival in patients with stage III non-small cell lung cancer who respond to chemoradiotherapy, based on the most recent follow-up of PACIFIC. The Chilean healthcare system provides access to certain immunotherapies for this condition. The present study sought to estimate the budget impact of durvalumab versus standard of care in the context of the Chilean healthcare system. Research design and methods A partitioned survival model was adapted to compare two strategies: durvalumab as consolidation therapy and standard of care for treating stage III NSCLC. The number of patients eligible for treatment was estimated using published incidence data and modeled for a 5-year time horizon. Model inputs were based on published literature, and the duration of treatment was estimated using survival curves obtained from PACIFIC. Costs were estimated in Chilean pesos (CLP) and converted to USD dollars using an exchange rate of USD 1 = CLP 827. Scenario analyses were performed to assess different subsequent therapy splits, variations in the target population and dosage of durvalumab. Results Durvalumab uptake projected total costs ranging from USD 1.27 in Year 1 to 8.5 million in Year 5 from the public perspective. From the private perspective, the budget impact for the first year is USD 1.3 million to USD 3 million for 2028. This difference relies mostly on the lower number of patients treated. Both perspectives anticipated cost savings over the time horizon through reduced monitoring, adverse events, and end-of-life expenses. Conclusions This study demonstrates that the inclusion of Durvalumab for NSCLC in Chile represents an investment in the Chilean health system. The incremental costs align with clinical benefits and potential savings in healthcare resource utilization. However, a comprehensive cost-effectiveness analysis is needed to evaluate its economic value thoroughly. 

Budget impact analysis of durvalumab consolidation therapy vs no consolidation therapy after chemoradiotherapy in stage III non–small cell lung cancer in the context of the Chilean health care system

In the phase III PACIFIC study, durvalumab improved survival versus placebo in patients with unresectable stage III non-small-cell lung cancer (NSCLC) whose disease had not progressed after platinum-based concurrent chemoradiotherapy. The appraisal by the UK’s National Institute for Health and Care Excellence (NICE) included a cost-effectiveness analysis based on an early data readout from PACIFIC [March 2018 data cut-off (DCO); median follow-up duration 25.2 months; range 0.2–43.1]. Uncertainties regarding long-term survival outcomes with durvalumab led to some challenges in estimating the cost effectiveness of this therapy. Here, we validate the survival extrapolations used in the original company base-case analysis by benchmarking them against updated survival data from the 4-year follow-up analysis of PACIFIC (i.e. approximately 4 years after the last patient was randomised; March 2020 DCO; median follow-up duration 34.2 months; range 0.2–64.9). Moreover, we update the original analysis with these more mature survival data to examine the consistency of key economic outputs with the original analysis. The original analysis used a semi-Markov (state-transition) approach and was based on patients whose tumours expressed programmed cell death-ligand 1 on ≥ 1% of cells (to reflect the European licence for durvalumab). We benchmarked the survival extrapolations used in the original company base-case analysis against survival data from the 4-year follow-up of PACIFIC and updated the cost-effectiveness analysis with these more mature survival data. Early deaths avoided by the adoption of durvalumab into the UK Cancer Drugs Fund (CDF) in March 2019 were estimated using the 4-year follow-up survival data and an assumed uptake of 125 patients/year (lower estimate) and 367 patients/year (higher estimate). The original company base-case analysis had a good visual fit with the observed overall survival (OS) distribution for the durvalumab arm and accurately predicted the 48-month OS rate (predicted 55%; observed 55%); by comparison, the fit was less precise for the placebo arm, for which the analysis underestimated the 48-month OS rate (predicted 32%; observed 38%). In the updated company base-case analysis, durvalumab yielded 2.51 incremental quality-adjusted life-years (QALYs) (− 0.43 vs. the original company base-case analysis), corresponding to an incremental cost-effectiveness ratio of £22,665/QALY (+£3298 vs. the original analysis), which falls within the upper bound of NICE’s willingness-to-pay threshold (£30,000/QALY gained). We estimate that between 31 and 91 early patient deaths may have been avoided by the adoption of durvalumab into the CDF. These findings reinforce the patient benefit observed with durvalumab in unresectable stage III NSCLC, support the routine use and cost effectiveness of this therapy, and demonstrate how appropriate modelling can inform the early adoption of therapies by payers to achieve patient benefit. Based on the results of a clinical trial, the European Medicines Agency approved durvalumab for the treatment of adults with a specific type of advanced lung cancer whose tumours cannot be removed surgically and whose disease has not progressed after chemotherapy and radiotherapy. The UK’s National Institute for Health and Care Excellence (NICE) invites companies to submit cost-effectiveness analyses to help with decision making about adopting new therapies. The company included an analysis based on early trial data that suggested durvalumab was cost effective compared with other previous treatments. As patients in the study at the time of the initial submission to NICE were only followed for approximately 2 years, the long-term survival benefit that could be achieved with durvalumab was uncertain. Therefore, NICE recommended durvalumab for use within the Cancer Drugs Fund (CDF) to allow patients to access the drug while more data were being collected. Here, we demonstrate that the original cost-effectiveness model accurately predicted the rates of long-term survival for patients receiving durvalumab and that durvalumab remains a cost-effective use of healthcare resources based on recently published data from the trial (which added approximately 2 further years of follow-up). Moreover, we estimate that adopting durvalumab into the CDF may have avoided 31–91 early patient deaths from lung cancer. These findings support NICE’s early decision to make durvalumab available within the CDF and the adoption of durvalumab for routine use within the UK national health service.

/pdf/cost-effectiveness-of-durvalumab-in-unresectable-stage-iii-20q74uqgty.pdf

Cost Effectiveness of Durvalumab in Unresectable Stage III NSCLC: 4-Year Survival Update and Model Validation from a UK Healthcare Perspective

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Cost Effectiveness of Durvalumab in Unresectable Stage III NSCLC: 4-Year Survival Update and Model Validation from a UK Healthcare Perspective