Extension Study of ABBV-8E12 in Patients With Progressive Supranuclear Palsy (PSP) Who Completed Study C2N-8E12-WW-104

Extension Study of ABBV-8E12 in Patients With Progressive Supranuclear Palsy (PSP) Who Completed Study C2N-8E12-WW-104

The purpose of this study is to assess the long-term safety and tolerability of ABBV-8E12 in subjects with progressive supranuclear palsy (PSP).

Inclusion Criteria:

• Subject completed Study C2N-8E12-WW-104 (NCT02494024)
• Subject was not eligible to enroll in Study M15-562 (NCT02985879)

Exclusion Criteria:

• Subject weighs less than 35 kg at screening
• Subject has any contraindication or inability to tolerate brain MRI
• Subject has any significant change in his/her medical condition that could interfere with the subject's participation in the study, could place the subject at increased risk, or could confound interpretation of study results