Policy Options for Infliximab Biosimilars in Inflammatory Bowel Disease Given Emerging Evidence for Switching

Don Husereau, Brian Feagan, Carl Selya-Hammer, Don Husereau, Brian Feagan, Carl Selya-Hammer

Abstract

Biosimilars are becoming increasingly available internationally as patents expire on the originator biologic drugs they are intended to copy. Although substitution policies seen with generic drugs are being considered as a means to reduce expenditures on biologics, some biosimilars pose particular challenges in that the act of substitution may eventually lead to increased rates of therapeutic failure. As evidence requirements from regulators do not directly address this challenge, switch trials of biosimilars have emerged that may provide further answers. Using infliximab in inflammatory bowel disease as an example, we critically examine emerging evidence from two key switch trials (NOR-SWITCH and NCT020968610) and discuss the clinical and economic implications of these and what policy options may be most reasonable for payers. Options include reimbursing biosimilars for only newly diagnosed patients, using product-listing agreements to manage uncertainty, or using tiered co-payments or other incentives to promote biosimilar use.

Conflict of interest statement

Funding sources

All authors have received funding from Janssen/J&J for market access advice and analysis. DH has received funding to draft the manuscript and BF and DH have provided market access advice to the funder. CSH has provided market access advice and conducted the economic evaluation for the funder.

Author contributions

BF provided the original inspiration and some key content for this work. DH led the writing of the manuscript including the drafting of the outline and manuscript and is the guarantor of this work. All authors approved the outline of the work, helped to write and revise the manuscript, and read and approved the final version of the manuscript.

Conflict of interest

All authors have signed conflict of interest forms and read information regarding disclosure of potential conflict of interest at http://www.springer.com/us/authors-editors/journal-author/journal-author-helpdesk/before-you-start and declare the following: accepting consulting fees from medical device and pharmaceutical companies who may have interest in the work (DH, BF, CSH).

Figures

Fig. 1
Fig. 1
Forest plot of infliximab originator versus biosimilar from NOR-SWITCH indicating improvement or worsening in disease according to disease-specific instruments
Fig. 2
Fig. 2
Probabilistic sensitivity analysis scatterplot for biosimilar versus originator infliximab

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Source: PubMed

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