Guselkumab in moderately to severely active ulcerative colitis: Another interleukin-23p19 subunit inhibitor or more?

The QUASAR clinical development program evaluated the efficacy of guselkumab-an IL-23p19 subunit inhibitor-for the treatment of moderate-to-severe ulcerative colitis.¹ Guselkumab demonstrated rapid control of symptoms, as well as significant rates of objective disease remission. However, real-world evidence will be crucial to confirm these findings in patient subgroups that were not included in the QUASAR program.