A cost-utility analysis of apalutamide for the treatment of patients with metastatic castration-sensitive prostate cancer (mCSPC).

2020 ◽  
Vol 38 (15_suppl) ◽  
pp. e19369-e19369
Author(s):  
Ambika Parmar ◽  
Narhari Timilshina ◽  
Urban Emmenegger ◽  
Shabbir M.H. Alibhai ◽  
Martin Smoragiewicz ◽  
...  

e19369 Background: The therapeutic landscape for patients with mCSPC has evolved over the last decade given the growing body of evidence demonstrating efficacy for the earlier application of oral androgen receptor signaling inhibitors, such as with abiraterone and enzalutamide. Recently the success of the TITAN trial established the superior efficacy of apalutamide combined with androgen deprivation therapy (ADT), with a 33% reduction in mortality versus ADT alone, and a tolerable toxicity profile. However, with substantially higher costs than ADT alone, the cost-effectiveness of this combination is critical to evaluate. Methods: A cost-utility analysis of apalutamide+ADT versus ADT alone was conducted from the Canadian healthcare perspective. A state-transition model with probabilistic analysis was used to compare the two strategies over a lifetime horizon. Model inputs were informed by the TITAN trial (transition probabilities, adverse events [AE], subsequent therapy), published literature (utilities) and Canadian costing resources (systemic therapy [initial and subsequent], routine care [physician visits, imaging], AE, end-of-life care costs). Primary outcomes included expected life-year gains (LYG), quality-adjusted life-years (QALY), lifetime cost (in 2018 Canadian dollars), and the incremental cost-effectiveness ratio (ICER). Multiple scenario analyses were conducted to assess parameter and model uncertainty. Cost and effectiveness were discounted at 1.5% as per Canadian guidelines. Results: From the base-case analysis expected LYG and QALY for ADT and apalutamide+ADT were 4.11, 5.57 and 3.50, 4.85, respectively. Expected cost over a lifetime horizon was $37,553 and $254,205, respectively. The ICER for apalutamide+ADT as compared to ADT alone was $160,483/QALY. Through scenario analysis, cost-effectiveness of apaluatmide+ADT was achieved with apalutamide price reductions of >50%, relative to a cost-effectiveness threshold (CET) of $100,000/QALY. Scenario analysis of alternative long-term survival expectations with apalutamide+ADT demonstrated cost-effectiveness (relative to CET $100,000/QALY) with expected improvements in the 5-year survival rate of 29% as compared to ADT (versus base-case expected improvement in 5-year survival of 15%). Conclusions: Apalutamide+ADT is unlikely to be cost-effective from the Canadian healthcare perspective at current list prices. Improvement in cost-effectiveness is most likely to be achieved through price reductions in apalutamide drug costs.

2015 ◽  
Vol 2015 ◽  
pp. 1-13 ◽  
Author(s):  
Robert Nee ◽  
Ian Rivera ◽  
Dustin J. Little ◽  
Christina M. Yuan ◽  
Kevin C. Abbott

Background/Aims. We aimed to examine the cost-effectiveness of mycophenolate mofetil (MMF) and azathioprine (AZA) as maintenance therapy for patients with Class III and Class IV lupus nephritis (LN), from a United States (US) perspective.Methods. Using a Markov model, we conducted a cost-utility analysis from a societal perspective over a lifetime horizon. The modeled population comprised patients with proliferative LN who received maintenance therapy with MMF (2 gm/day) versus AZA (150 mg/day) for 3 years. Risk estimates of clinical events were based on a Cochrane meta-analysis while costs and utilities were retrieved from other published sources. Outcome measures included costs, quality-adjusted life-years (QALY), incremental cost-effectiveness ratios (ICER), and net monetary benefit.Results. The base-case model showed that, compared with AZA strategy, the ICER for MMF was $2,630,592/QALY at 3 years. Over the patients’ lifetime, however, the ICER of MMF compared to AZA was $6,454/QALY. Overall, the ICER results from various sensitivity and subgroup analyses did not alter the conclusions of the model simulation.Conclusions. In the short term, an AZA-based regimen confers greater value than MMF for the maintenance therapy of proliferative LN. From a lifelong perspective, however, MMF is cost-effective compared to AZA.


2019 ◽  
Vol 37 (15_suppl) ◽  
pp. 6639-6639
Author(s):  
Ambika Parmar ◽  
Marina Richardson ◽  
Beate Sander ◽  
Susanna Y. Cheng ◽  
Kelvin K. Chan

6639 Background: Despite early promising results, IMvigor211 failed to demonstrate an overall survival benefit for atezolizumab, compared to chemotherapy, in the second-line treatment of metastatic urothelial carcinoma. However, given improvements in adverse events (AE) and quality of life with atezolizumab, there may still be investment value. We conducted a cost-utility analysis (CUA) of atezolizumab compared to chemotherapy from a public-payer healthcare perspective. Methods: We developed a partitioned survival model to evaluate atezolizumab versus chemotherapy (i.e. docetaxel, paclitaxel or vinflunine). IMvigor211 informed rates of treatment receipt (initial and subsequent), AE, effectiveness and utility estimates. Cost for treatment, AE and death were based on published literature (adjusted to 2018 Canadian dollars). Per health state, cost of treatment (initial and subsequent) and AE were incorporated. Outcomes included quality-adjusted life-years (QALY), cost per treatment, and incremental cost-effectiveness ratio (ICER). QALY and cost were discounted at 1.5% (Canadian guidelines). Parameter uncertainty was assessed through one-way and scenario analyses. Time horizons of 2 (within trial) and 5 years (extrapolated lifetime) were evaluated. Results: QALY of atezolizumab and chemotherapy over 2 years (lifetime) were 0.65 (0.93) and 0.58 (0.64), respectively. Cost of atezolizumab and chemotherapy over 2 years (lifetime) was $77,614.64, ($92,484.34), and $62,212.35 ($67,606.65), respectively. ICER over 2 years and lifetime was $220,032.71/QALY and $85,785.14/QALY. Scenario analysis from a North American perspective with only taxane chemotherapy with and without third line immunotherapy (IO) revealed an ICER of $80,144.90/QALY, $125,332.76/QALY over a lifetime horizon, respectively. Conclusions: The difference in ICER dependent on time horizon, driven by extrapolated survival benefits, highlights the importance of long-term follow-up to examine whether early evidence for durable response translates into long-term survival and improvements in cost-effectiveness. Thus, CUA of IO require careful interpretation and warrant dynamic assessment as new data becomes available.


2020 ◽  
Vol 27 (4) ◽  
Author(s):  
A. Parmar ◽  
M. Richardson ◽  
P. C. Coyte ◽  
S. Cheng ◽  
B. Sander ◽  
...  

Background Despite initial promising results, the IMvigor211 clinical trial failed to demonstrate an overall sur­vival (os) benefit for atezolizumab compared with chemotherapy in the second-line treatment of metastatic bladder cancer (mbc). However, given  lessened adverse events (aes) and preserved quality of life (qol) with atezolizumab, there might still be investment value. To evaluate that potential value, we conducted a cost–utility analysis (cua) of atezolizumab compared with chemotherapy from the perspective of the Canadian health care payer. Methods A partitioned survival analysis model was used to evaluate atezolizumab compared with chemotherapy over a lifetime horizon (5 years). The base-case analysis was conducted for the intention-to-treat (itt) population, with additional scenario analyses for subgroups by IMvigor-defined PD-L1 status. Effectiveness was evaluated through life–year gains and quality-adjusted life–years (qalys). Cost estimates in 2018 Canadian dollars for systemic treatment, aes, and end-of-life care were incorporated. The incremental cost-effectiveness ratio (icer) was used to compare treatment strategies. Parameter and model uncertainty were assessed through sensitivity and scenario analyses. Per Canadian guidelines, cost and effectiveness were discounted at 1.5%. Results For the itt population, the expected qalys for atezolizumab and chemotherapy were 0.75 and 0.56, with expected costs of $90,290 and $8,466 respectively. The resultant icer for atezolizumab compared with chemotherapy was $430,652 per qaly. Scenario analysis of patients with PD-L1–positive tumours led to a lower icer ($334,387 per qaly). Scenario analysis of observed compared with expected benefits demonstrated a higher icer, with a shorter time horizon ($928,950 per qaly). Conclusions Despite lessened aes and preserved qol, atezolizumab is not considered cost-effective for the second-line treatment of mbc.


2021 ◽  
Vol 39 (15_suppl) ◽  
pp. e15581-e15581
Author(s):  
Monish Ahluwalia ◽  
Ambika Parmar ◽  
Eric Xueyu Chen ◽  
Derek J. Jonker ◽  
Jonathan M. Loree ◽  
...  

e15581 Background: The randomized phase II CCTG CO.26 clinical trial investigated the use of combined durvalumab and tremelimumab vs. best supportive care (BSC) for patients with mCRC and suggested an increase in overall survival (OS). The largest benefit was seen in patients who were microsatellite stable (MSS) with a pTMB ≥ 28 variants per megabase. Considering significantly higher adverse event rates and costs associated with durvalumab and tremelimumab, it is important to evaluate its cost-effectiveness. Accordingly, we performed a cost-utility analysis of durvalumab and tremelimumab compared to BSC in the intention-to-treat (ITT) and biomarker-enriched populations using CO.26 trial data. Methods: We developed a 4-state microsimulation model to evaluate the expected health outcomes in life-years (LYs), quality-adjusted life-years (QALYs) and costs of the treatment group compared to BSC over a lifetime horizon (5 years). The incremental cost-utility ratio (ICUR) was used to compare treatment strategies. Direct trial data from CO.26 were used to inform model inputs, including OS curves, progression-free survival (PFS) curves, and adverse event rates. As health state utilities were not collected in CO.26, values from the CORRECT trial, a multi-centre randomized placebo-controlled phase III study for regorafenib in mCRC, were used. Costs of therapy, hospitalization due to adverse events, end-of-life care, and physician costs were derived from the literature and publicly available sources (in 2020 Canadian dollars). Since the monthly price of tremelimumab was unavailable, it was approximated with the price of another CTLA-4 inhibitor, ipilimumab. The base-case analysis evaluated these treatment strategies in the ITT population. Scenario analyses evaluated the cost-effectiveness in biomarker-enriched populations. Costs and effects were discounted at 1.5% as per Canadian guidelines. Results: In the base-case, expected LYs for combined durvalumab and tremelimumab and BSC were 0.75 and 0.51 (incremental (Δ) 0.24) respectively. Expected QALYs were 0.47 and 0.33 (Δ 0.14). Expected lifetime costs were $60 500 and $15 500 (Δ $45 000) for an ICUR of $320 000/QALY. In the biomarker-enriched subgroup, the expected LYs were 0.67 and 0.33 (Δ 0.34), expected QALYs were 0.43 and 0.22 (Δ 0.21), and expected lifetime costs were $62 000 and $15 200 (Δ $47 000). This represents an increase in the incremental QALYs by 50% and costs by 5% for an ICUR 30% lower than the base case at $220 000/QALY. Conclusions: Combined durvalumab and tremelimumab is not considered cost-effective in refractory mCRC under conventional willingness-to-pay thresholds. Cost-effectiveness is improved with biomarker enrichment for high pTMB, driven by the greater derived health outcomes in this subgroup.


2021 ◽  
Author(s):  
Ravi Vissapragada ◽  
Norma Bulamu ◽  
Jonathan Karnon ◽  
Roger Yazbek ◽  
David I. Watson

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Mireia Massot Mesquida ◽  
Frans Folkvord ◽  
Gemma Seda ◽  
Francisco Lupiáñez-Villanueva ◽  
Pere Torán Monserrat

Abstract Background Growing evidence shows the effects of psychotropic drugs on the evolution of dementia. Until now, only a few studies have evaluated the cost-effectiveness of psychotropic drugs in institutionalized dementia patients. This study aims to assess the cost-utility of intervention performed in the metropolitan area of Barcelona (Spain) (MN) based on consensus between specialized caregivers involved in the management of dementia patients for optimizing and potentially reducing the prescription of inappropriate psychotropic drugs in this population. This analysis was conducted using the Monitoring and Assessment Framework for the European Innovation Partnership on Active and Healthy Ageing (MAFEIP) tool. Methods The MAFEIP tool builds up from a variety of surrogate endpoints commonly used across different studies in order to estimate health and economic outcomes in terms of incremental changes in quality adjusted life years (QALYs), as well as health and social care utilization. Cost estimates are based on scientific literature and expert opinion; they are direct costs and include medical visits, hospital care, medical tests and exams and drugs administered, among other concepts. The healthcare costs of patients using the intervention were calculated by means of a medication review that compared patients’ drug-related costs before, during and after the use of the intervention conducted in MN between 2012 and 2014. The cost-utility analysis was performed from the perspective of a health care system with a time horizon of 12 months. Results The tool calculated the incremental cost-effectiveness ratio (ICER) of the intervention, revealing it to be dominant, or rather, better (more effective) and cheaper than the current (standard) care. The ICER of the intervention was in the lower right quadrant, making it an intervention that is always accepted even with the lowest given Willingness to Pay (WTP) threshold value (€15,000). Conclusions The results of this study show that the intervention was dominant, or rather, better (more effective) and cheaper than the current (standard) care. This dominant intervention is therefore recommended to interested investors for systematic application.


Trauma ◽  
2017 ◽  
Vol 21 (1) ◽  
pp. 45-54 ◽  
Author(s):  
Maxwell S Renna ◽  
Cristiano van Zeller ◽  
Farah Abu-Hijleh ◽  
Cherlyn Tong ◽  
Jasmine Gambini ◽  
...  

Introduction Major trauma is a leading cause of death and disability in young adults, especially from massive non-compressible torso haemorrhage. The standard technique to control distal haemorrhage and maximise central perfusion is resuscitative thoracotomy with aortic cross-clamping (RTACC). More recently, the minimally invasive technique of resuscitative endovascular balloon occlusion of the aorta (REBOA) has been developed to similarly limit distal haemorrhage without the morbidity of thoracotomy; cost–utility studies on this intervention, however, are still lacking. The aim of this study was to perform a one-year cost–utility analysis of REBOA as an intervention for patients with major traumatic non-compressible abdominal haemorrhage, compared to RTACC within the U.K.’s National Health Service. Methods A retrospective analysis of the outcomes following REBOA and RTACC was conducted based on the published literature of survival and complication rates after intervention. Utility was obtained from studies that used the EQ-5D index and from self-conducted surveys. Costs were calculated using 2016/2017 National Health Service tariff data and supplemented from further literature. A cost–utility analysis was then conducted. Results A total of 12 studies for REBOA and 20 studies for RTACC were included. The mean injury severity scores for RTACC and REBOA were 34 and 39, and mean probability of death was 9.7 and 54%, respectively. The incremental cost-effectiveness ratio of REBOA when compared to RTACC was £44,617.44 per quality-adjusted life year. The incremental cost-effectiveness ratio, by exceeding the National Institute for Health and Clinical Effectiveness’s willingness-to-pay threshold of £30,000/quality-adjusted life year, suggests that this intervention is not cost-effective in comparison to RTACC. However, REBOA yielded a 157% improvement in utility with a comparatively small cost increase of 31.5%. Conclusion Although REBOA has not been found to be cost-effective when compared to RTACC, ultimately, clinical experience and expertise should be the main factor in driving the decision over which intervention to prioritise in the emergency context.


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