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Table 3 Tolerability in the 3 Top-recruiting Countries (Czech Republic, United States, and Finland)

From: Efficacy and safety of fremanezumab in patients with migraine and inadequate response to prior preventive treatment: subgroup analyses by country of a randomized, placebo-controlled trial

AEs, no. (%) Placebo (n = 126) Monthly fremanezumab (n = 134) Quarterly fremanezumab (n = 133)
≥ 1 injection-site reaction AE 15 (12) 21 (16) 14 (10)
≥ 1 AE 52 (41) 63 (47) 55 (41)
≥ 1 SAE 3 (2) 0 1 (< 1)
AEs leading to discontinuation 2 (2) 0 2 (1)
AEsa
 Injection-site erythema 6 (5) 9 (7) 6 (4)
 Injection-site pain 4 (3) 9 (7) 3 (2)
 Injection-site induration 3 (2) 4 (3) 7 (5)
 Injection-site bruising 2 (2) 2 (2) 2 (1)
 Injection-site pruritus 2 (2) 2 (2) 2 (1)
 Nasopharyngitis 6 (5) 6 (5) 4 (3)
 Upper respiratory tract infection 1 (< 1) 7 (5)
 Influenza 0 2 (2) 4 (3)
 Nausea 2 (2) 3 (2) 2 (1)
 Constipation 2 (2) 3 (2) 0
 Dyspepsia 2 (2) 0 2 (1)
 Urinary tract infection 2 (2) 1 (< 1) 0
 Foot fracture 0 2 (2) 0
 Road traffic accident 0 2 (2) 0
 International normalized ratio increased 2 (2) 7 (5) 2 (1)
 Hemoglobin decreased 0 2 (2) 0
 Neck pain 0 1 (< 1) 3 (2)
 Pain in extremity 2 (2) 0 3 (2)
 Insomnia 1 (< 1) 3 (2) 3 (2)
 Anxiety 0 1 (< 1) 2 (1)
 Alopecia 2 (2) 1 (< 1) 1 (< 1)
  1. AE, adverse event, SAE, serious adverse event
  2. aAEs that occurred in ≥ 2 patients in any treatment group were reported