A Study of LY2951742 (Galcanezumab) in Participants With Cluster Headache

A Phase 3b Multicenter, Single-Arm, Open-Label Safety Study of LY2951742 (Galcanezumab) in Patients With Episodic or Chronic Cluster Headache

The main purpose of this study is to assess the long-term safety and tolerability of galcanezumab administered up to once monthly in participants with episodic or chronic cluster headache who have completed study I5Q-MC-CGAL (NCT02397473) or study I5Q-MC-CGAM (NCT02438826).

Inclusion Criteria:

• Participants who participated in and completed either study CGAL or study CGAM.
• Investigator judges the participant as reliable to follow all study procedures, keep all study visits, and be compliant with study requirements.

Exclusion Criteria:

• Current enrollment in or discontinuation within the last 30 days from, a clinical trial involving any investigational drug or device (with the exception of Study CGAL or Study CGAM).
• Current use or any prior exposure to any calcitonin-gene-related peptide (CGRP) antibody, any antibody to the CGRP receptor, or antibody to nerve growth factor (NGF) (with the exception of Study CGAL or Study CGAM).
• A history of migraine variants that could implicate or could be confused with ischemia.
• Known hypersensitivity to multiple drugs, monoclonal antibodies or other therapeutic proteins.
• A history or presence of other medical illness that indicates a medical problem that would preclude study participation.
• Evidence of significant active or unstable psychiatric disease, in the opinion of the investigator.
• Women who are pregnant or nursing.