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. 2021 Oct 23;44(12):1355–1364. doi: 10.1007/s40264-021-01119-2
This long-term, randomized, open-label trial in Japanese patients with chronic or episodic migraine found that fremanezumab was associated with no drug-related serious adverse events, or deaths reported during the 12-month study period.
The most common adverse events related to fremanezumab treatment were nasopharyngitis and injection-site reactions; antidrug antibody development was infrequent.