Abstract
The availability of biosimilars in oncology has provided an opportunity for increased patient access to biologic therapies. However, healthcare professional perceptions concerning the relatively limited clinical data sufficient to support their regulatory approval may contribute to varied uptake and use. We review key aspects of the development program for the rituximab biosimilar PF-05280586 (Ruxience™) that supported its approval for lymphoid malignancies, to illustrate the rationale for an abbreviated clinical program. In particular, we describe the extensive analytical assessment, comprising sensitive techniques that established similarity with the reference product in key product attributes, underlying structure, function, potency, safety and quality, which formed the foundation for a successful development program, culminating in a confirmatory comparative clinical trial in patients with follicular lymphoma.
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