The economic impact of the transition from branded to generic oncology drugs.

Background: Economic evaluations are an integral component of many clinical trials. Costs used in those analyses are based on the prices of branded drugs when they first enter the market. The effect of genericization on the cost-effectiveness (ce) or cost-utility (cu) of an intervention is unknown because economic analyses are rarely updated using the costs of generic drugs. Methods: We re-examined the ce or cu of regimens previously evaluated in Canadian Cancer Trials Group (cctg) studies that included prospective economic evaluations and where genericization has occurred or is anticipated in Canada. We incorporated the new costs of generic drugs to characterize changes in ce or cu. We also determined acceptable cost levels of generic drugs that would make regimens reimbursable in a publicly funded health care system. Results: The four randomized controlled trials included (representing 1979 patients) were cctg br.10 (early lung cancer, adjuvant vinorelbine-cisplatin vs. observation, n = 172), cctg br.21 (metastatic lung cancer, erlotinib vs. placebo, n = 731), cctg co.17 (metastatic colon cancer, cetuximab vs. best supportive care, n = 557), and cctg ly.12 (relapsed or refractory lymphoma, gemcitabine-dexamethasone-cisplatin vs. cytarabine-dexamethasone-cisplatin, n = 619). Since the initial publication of those trials, the genericization of vinorelbine, erlotinib, cetuximab, and cisplatin has taken place or is expected in Canada. Costs of generics improved the ces and cus of treatment significantly. For example, genericization of erlotinib ($1460.25 per 30 days) resulted in an incremental cost-effectiveness ratio (icer) of $45,746 per life-year gained compared with $94,638 for branded erlotinib. Likewise, genericization of cetuximab ($275.80 per 100 mg) produced an icer of $261,126 per quality-adjusted life-year (qaly) gained compared with $299,613 for branded cetuximab. Decreases in the cost of generic cetuximab to $129.39 and $63.51 would further improve the icer to $150,000 and $100,000 per QALY respectively. Conclusions: Genericization of a costly oncology drug can modify the ce and cu of a regimen significantly. Failure to revisit economic analyses with the costs of generics could be a missed opportunity for funding bodies to optimize value-based allocation of health care resources. At current levels, the costs of generics might not be sufficiently low to sustain publicly funded health care systems.

Determining the Comparative Value of Pharmaceutical Risk-Sharing Policies in Non-Small Cell Lung Cancer Using Real-World Data.

BACKGROUND: Risk-sharing arrangements (RSAs) can be used to mitigate uncertainty about the value of a drug by sharing the financial risk between payer and pharmaceutical company. We evaluated the projected impact of alternative RSAs for non-small cell lung cancer (NSCLC) therapies based on real-world data. METHODS: Data on treatment patterns of Dutch NSCLC patients from four different hospitals were used to perform "what-if" analyses, evaluating the costs and benefits likely associated with various RSAs. In the scenarios, drug costs or refunds were based on response evaluation criteria in solid tumors (RECIST) response, survival compared to the pivotal trial, treatment duration, or a fixed cost per patient. Analyses were done for erlotinib, gemcitabine/cisplatin, and pemetrexed/platinum for metastatic NSCLC, and gemcitabine/cisplatin, pemetrexed/cisplatin, and vinorelbine/cisplatin for nonmetastatic NSCLC. RESULTS: Money-back guarantees led to moderate cost reductions to the payer. For conditional treatment continuation schemes, costs and outcomes associated with the different treatments were dispersed. When price was linked to the outcome, the payer's drug costs reduced by 2.5% to 26.7%. Discounted treatment initiation schemes yielded large cost reductions. Utilization caps mainly reduced the costs of erlotinib treatment (by 16%). Given a fixed cost per patient based on projected average use of the drug, risk sharing was unfavorable to the payer because of the lower than projected use. The impact of RSAs on a national scale was dispersed. CONCLUSIONS: For erlotinib and pemetrexed/platinum, large cost reductions were observed with risk sharing. RSAs can mitigate uncertainty around the incremental cost-effectiveness or budget impact of drugs, but only when the type of arrangement matches the setting and type of uncertainty.

[Oral vinorelbine therapy for non-small cell lung cancer: clinical and pharmacoeconomic aspects].

AIM: To evaluate clinical and pharmacoeconomic aspects of treatment for non-small cell lung cancer (NSCLC) by oral vinorelbine. MATERIAL AND METHODS: The evaluation was conducted based on randomized trials that compared NSCLC therapy by oral vinorebline with injectable form of vinorelbine and peme- trexed. Treatment costs were calculated on the basis of prices registered in 2016 including VAT and 10% of trade allow- ances. Medical services costs were calculated based on tariffs of obligatory health insurance for St. Petersburg in 2016. RESULTS: Clinical trials showed that with comparable effi- cacy and tolerability 3 of 4 patients preferred oral vinorelbine to its injectable form, although therapy costs of oral form in- creased 1,9 times. Compared with pemetrexed, therapy of pa- tients with NSCLC by oral vinorelbine allowed reducing costs 1,74 times and the savings occurred 310.0 thousand rubles per 1 patient. CONCLUSION: Currently oral vinorelbine therapy can be regarded as a mode that is comparable by efficacy and tol- erability both with intravenous injections of vinorelbine and pemetrexed therapy. As compared with intravenous vinorelbine its oral form requires additional costs but, being compared with pemetrexed, oral vinorelbine can significantly reduce the burden on the health budget.