Effectiveness and safety of switching to adalimumab biosimilar ABP 501 in Crohn's disease.

We read with great interest the article "Effectiveness and safety of adalimumab biosimilar ABP 501 in Crohn's disease: an observational study" by Ribaldone et al., which was recently published in your journal. The authors report the first real-life study of the adalimumab biosimilar ABP 501 in Crohn's disease (CD). The study investigated the short-term effectiveness and safety of ABP 501 in 87 patients with CD, 25 patients naïve to adalimumab and 62 switched from the adalimumab originator. A meaningful proportion of CD patients treated with ABP 501 showed clinical benefit with a satisfactory safety profile until the end of follow-up.