Physicians' and patients' perception of biosimilars and factors affecting biosimilar prescribing in selected Asian countries: a survey study.

Background: This study evaluated physicians' and patients' beliefs about biosimilars in Hong Kong, India, Pakistan, Singapore, Taiwan, and Thailand.

Research design and methods: An online survey administered to physicians (dermatologists, n = 119; gastroenterologists, n = 148; rheumatologists, n = 161) between 22 October 2021 and 7 January 2022, and patients (n = 90) with rheumatic or inflammatory bowel disease between 25 October 2021 and 12 April 2022.

Results: Most (68%) physicians reported having a strong knowledge about biosimilars, yet 49% indicated that biosimilars are readily available to them. Physicians cited potential cost savings (81%) as the main benefit of biosimilars, and cost/coverage support (36%), patient support (25%), and increasing biosimilar awareness/education (24%) as main strategies for improving usage. Few (21%) patients reported having a strong knowledge about biosimilars. Patients cited offering alternatives in case of drug shortages (77%) as the main benefit of biosimilars, and cost/coverage support (53%), increasing awareness of product profile (22%), and providing biosimilars with a good efficacy profile/effective product (19%) as main strategies for improving usage.

Conclusion: Programs focused on cost/coverage support, patient support, and biosimilar awareness could improve acceptance of biosimilars for chronic immune-mediated inflammatory diseases in Asian countries, thereby increasing patient access to essential biologic therapies.