Abstract
The World Health Assembly resolution on access to biotherapeutics in 2014 urges WHO and Member States to facilitate access to biotherapeutics while ensuring their quality, safety, and efficacy. While efforts to date have contributed to increased availability and better access to biotherapeutics, including biosimilars, huge gaps still remain, with lack of product access identified as a problem in many countries. A thorough review of the WHO guidelines on biosimilars issued in 2009 in view of technical developments, accumulated and emerging scientific evidence as well as experience in biosimilar evaluation since the release of the guidelines provided an opportunity to introduce greater flexibility and to reduce regulatory requirements in biosimilar development where possible. Based on the identification, draft revisions of the WHO guidelines were prepared with input from extensive consultation with various stakeholders and the broader public. The move toward a greater emphasis on quality and functional in vitro assessment enables the reduction of cost and timelines of development and supports streamlined regulatory approval as a first critical step toward product availability. This article includes the key updates that have been incorporated in the revised guidelines but are not restricted to these alone and should be read in conjunction with the guidelines.
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