Nita K.F. Wienholtz, MD, PhD, from Copenhagen University Hospital-Rigshospitalet in Denmark, and colleagues examined the effectiveness, tolerability, and safety of erenumab for treatment of rosacea-associated erythema and flushing in a single-center, nonrandomized trial involving adults with rosacea with at least 15 days of moderate-to-severe erythema and/or moderate-to-extreme flushing. Participants received 140mg erenumab subcutaneously every four weeks for a period of 12 weeks; safety was assessed at week 20.

Thirty participants were included; 27 completed the study. The researchers observed a reduction of −6.9 days in the mean number of days with moderate-to-extreme flushing, from 23.6 days at baseline. For moderate-to-severe erythema, the mean number of days was reduced by −8.1 from 15.2 at baseline. Adverse events included transient mild-to-moderate constipation, transient worsening of flushing, bloating, and upper respiratory tract infection (33, 13, 10, and 10%, respectively). One participant discontinued the study due to a serious adverse event, deemed unrelated to the study, and 2 withdrew consent due to time constraints.

“The results also suggest that erenumab is generally well tolerated, with mild and/or transient adverse effects,” the authors write. “Larger randomized, controlled, double-blind studies are necessary to confirm these findings and to investigate the long-term effects of erenumab treatment.”

Several authors disclosed ties to pharmaceutical companies, including Novartis Pharma, which funded the study.

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