Safety signals
Upadacitinib was well tolerated in the induction and maintenance phases, and no new safety risks were observed compared with the known safety profile of the drug, the researchers noted.
For example, during the induction studies, the rate of any adverse event among patients without prior biologic failure was 60% in the 45-mg upadacitinib group and 53% in the placebo group. Among those who failed a prior biologic, the rates were 67% in the 45-mg upadacitinib group and 66% in the placebo group.
The adverse events were “issues that have already been identified with JAK inhibitors, the biochemical abnormalities with CPK [creatine phosphokinase] elevations and transaminase elevations,” Dr. Feagan said.
There were no cases of herpes zoster among patients who received placebo compared with five cases in the 45-mg upadacitinib group without prior biologic failure and 10 cases in the prior biologic failure group.
“The zoster signal is there even at induction with the 45-mg dose versus placebo,” Dr. Feagan said.
‘Encouraging’ results
The study indicates that upadacitinib is effective in improving endoscopic outcomes for patients with Crohn’s disease, regardless of their prior biologic treatments, Robin L. Dalal, MD, assistant professor of medicine at Vanderbilt University in Nashville, Tenn., said when asked to comment on the study.
“This is important because, as the treatment landscape for Crohn’s disease has expanded, sequencing of therapies has become more complex,” added Dr. Dalal, who was not involved in the research. “For upadacitinib in Crohn’s disease, prior biologic use may not be a factor in endoscopic response rates.”
The findings are “very encouraging for physicians and practitioners who treat IBD [inflammatory bowel disease] patients,” Maithili Chitnavis, MD, of the inflammatory bowel disease section at Atrium Health Gastroenterology in Charlotte, N.C., said when asked for comment.
“We clearly care about how patients feel overall, but endoscopic and histologic outcomes are important to investigate because we want to ensure there is internal healing to prevent a lot of the longstanding complications of Crohn’s disease, such as malignancy, strictures, fistulizing/penetrating disease, and need for surgery,” said Dr. Chitnavis, who was not involved with the study.
Upadacitinib is an oral agent, which distinguishes it from the injectable or infusion-based biologic therapies for Crohn’s disease, Dr. Chitnavis noted.
The finding that the medication works in patients with or without prior biologic failure is important, she said.
“With its anticipated ... approval for Crohn’s disease [by the Food and Drug Administration], it is expected that patients will have had to have demonstrated a lack of or loss of response to another biologic, specifically in the anti-TNF category (for example, infliximab, adalimumab, certolizumab) prior to starting upadacitinib due to concerns of potential side effects associated with the class of medications to which it belongs,” Dr. Chitnavis said. “Therefore, it makes it even more relevant to know how patients who have failed a prior biologic respond to this therapy.”
Dr. Feagan has reported serving as a consultant and speaker for AbbVie. Dr. Dalal has reported being a consultant for AbbVie in 2021. Dr. Chitnavis has reported no relevant financial relationships.
A version of this article originally appeared on Medscape.com.