Abstract
Necitumumab (Neci) was the first biologic approved by the FDA for use in combination with gemcitabine and cisplatin (Neci + GCis) in first-line treatment of metastatic squamous non-small cell lung cancer (msqNSCLC). The potential financial impact on a health plan of adding Neci + GCis to drug formularies may be important to value-based decision makers in the United States, given ever-tightening budget constraints. To estimate the budget impact of introducing Neci + GCis for first-line treatment of msqNSCLC from U.S. commercial and Medicare payer perspectives. The budget impact model estimates the costs of msqNSCLC before and after adoption of Neci + GCis in hypothetical U.S. commercial and Medicare health plans over a 3-year time horizon. The eligible patient population was estimated from U.S. epidemiology statistics. Clinical data were obtained from randomized clinical trials, U.S. prescribing information, and clinical guidelines. Market share projections were based on market research data. Cost data were obtained from online sources and published literature. The incremental aggregate annual health plan, per-patient-per-year (PPPY), and per-member-per-month (PMPM) costs were estimated in 2015 U.S. dollars. One-way sensitivity analyses were conducted to assess the effect of model parameters on results. In a hypothetical 1,000,000-member commercial health plan with an estimated population of 30 msqNSCLC patients receiving first-line chemotherapy, the introduction of Neci + GCis at an initial market share of approximately 5% had an overall year 1 incremental budget impact of $88,394 ($3,177 PPPY, $0.007 PMPM), representing a 2.9% cost increase and reaching $304,079 ($10,397 PPPY, $0.025 PMPM) or a 7.4% cost increase at a market share of 14.7% in year 3. This increase in total costs was largely attributable to Neci drug costs and, in part, due to longer survival and treatment duration for patients treated with Neci+GCis. Overall, treatment costs increased by $81,812 (13.5%), and disease costs increased by $7,951 (0.4%), whereas adverse event costs decreased by $1,368 (0.5%) in year 1. From the Medicare perspective, the overall year 1 incremental budget impact was $438,056 ($0.037 PMPM, $3,112 PPPY), representing a 3.0% cost increase. The higher incremental budget in Medicare, compared with commercial plans, was due to higher msqNSCLC incidence in the older Medicare patients (154 vs. 30 patients, respectively). Results were most sensitive to Neci drug costs. Based on projected market shares, coverage for first-line therapy with Neci + GCis appeared to modestly affect overall U.S. health care budgets for msqNSCLC-related care. Given the small eligible patient population, the PMPM budgetary impact on a commercial health plan of reimbursing Neci + GCis in the first year was less than $0.01, rising with increased use of Neci + GCis to $0.025 in the third year. The real-world effect of Neci + GCis needs to be evaluated to validate this analysis; however, these findings may help policymakers in making coverage decisions for Neci + GCis. This study was funded by Eli Lilly and Company. Molife, Brown, Tawney, and Cuyun Carter are equity holders and employees of Eli Lilly and Company. Bly, Cinfio, and Klein are employees of Medical Decision Modeling, which received funding from Eli Lilly and Company to conduct this research and prepare this manuscript.
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