‘Effective and Durable Option’
Providing comment, Tim Raine, MD, a consultant gastroenterologist & IBD lead at Cambridge University Hospitals, United Kingdom, remarked on the value of long-term extension studies for understanding the impact of continued drug administration beyond the typical 1-year time horizon of registrational clinical trials given that CD is currently incurable.
“However, there are limitations with long-term extension studies,” he said in an interview. In particular, the patients who remain in the study tend to be “those who have had a good experience with the drug and remain motivated to take part in ongoing monitoring.”
But “patients will drop out of a long-term extension study for reasons that may or may not reflect loss of benefit from the drug, and this can be problematic with handling of missing data,” he explained.
In light of this issue, “the investigators have used the most stringent way of handling these patients, regarding all who drop out as instances of failure of the drug. This offers the most robust assessment of durability of response that may slightly underestimate the true long-term efficacy,” said Dr. Raine.
“Nevertheless, the response and remission rates for clinical endpoints suggest good durability of effect out to 3 years of follow-up. The endoscopic data are also encouraging,” he asserted.
“Taken together, these data suggest that risankizumab can offer an effective and durable option for some patients with Crohn’s disease and is associated with a favorable safety profile.”
Dr. Ferrante disclosed ties with AbbVie, Agomab Therapeutics, Amgen, Biogen, Boehringer Ingelheim, Celgene, Celltrion, EG, Eli Lilly, Falk, Ferring, Janssen, Janssen-Cilag, Lamepro, Medtronic, MRM, MSD, Pfizer, Regeneron, Samsung Bioepis, Sandoz, Takeda, ThermoFisher, Truvion Healthcare, and Viatris. Dr. Raine disclosed ties with AbbVie, Arena, Aslan, AstraZeneca, Boehringer-Ingelheim, BMS, Celgene, Ferring, Galapagos, Gilead, GSK, Heptares, LabGenius, Janssen, Mylan, MSD, Novartis, Pfizer, Sandoz, Takeda, and UCB.
A version of this article appeared on Medscape.com.