Ascending Single Doses of Erenumab (AMG 334) in Healthy Adults and Migraine Patients

A Phase I, Randomized, Double-Blind, Placebo-Controlled, Ascending Single Dose Study to Evaluate the Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of AMG 334 in Healthy Subjects and Migraine Patients

The primary purpose of this study is to determine whether erenumab is safe and well tolerated in healthy adults and migraine patients. As part of the secondary objectives, this study will be conducted to characterize the pharmacokinetic (PK) profile of erenumab after single subcutaneous (SC) or intravenous (IV) doses in healthy participants and migraine patients as well as to characterize the effect of erenumab on the capsaicin-induced increase in dermal blood flow after single SC or IV doses in healthy participants and migraine patients.

This study was a single-dose, double-blind, placebo-controlled, sequential dose escalation study in which participants were to be enrolled into 8 cohorts.

In Part 1 healthy participants were randomized in a 3:1 ratio (erenumab:placebo) into 6 cohorts: 5 cohorts received the investigational product (IP) as an SC administration and 1 cohort received it as an IV administration. In Part 2 a total of 12 migraine patients were randomized in a 1:1 ratio (erenumab:placebo) in cohort 7. An additional 8 migraine patients could have been enrolled and randomized in a 3:1 ratio in the optional cohort 8, however this cohort was not enrolled.

Inclusion Criteria:

- Healthy male and female subjects between 18 and 45 years of age, or male or female subjects with migraines between 18 and 55 years of age, inclusive, with no history or evidence of clinically relevant medical disorders as determined by the investigator in consultation with the Amgen physician;

Exclusion Criteria:

- History or evidence of clinically significant disorder (including psychiatric), condition or disease that, in the opinion of the Investigator or Amgen physician would pose a risk to subject safety or interfere with the study evaluation, procedures, or completion;