Footnotes

• Handling editor Josef S Smolen

• Contributors ND is the sole author of this article.

• Funding The author has not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

• Competing interests ND received consulting fees from AstraZeneca, Dyve Biosciences, Horizon, Selecta, Arthrosi, JW Pharmaceutical Corporation, PK Med, LG Chem, JPI, PTC Therapeutics and Protalix outside the submitted work.

• Patient and public involvement Patients and the public were not involved in the design, conduct, reporting or dissemination plans of this research.

• Provenance and peer review Commissioned; externally peer reviewed.