[11C]-PBR28 Positron Emission Tomography Study to Evaluate the Effect of ABT 555 in Subjects With Relapsing Forms of Multiple Sclerosis
Multiple Sclerosis
About this trial
This is an interventional treatment trial for Multiple Sclerosis focused on measuring Relapsing multiple sclerosis
Eligibility Criteria
Inclusion Criteria:
Diagnosis of relapsing-remitting MS (RRMS) or relapsing secondary progressive MS (SPMS)
Neurologically stable at Screening, in the investigator's judgment and not actively experiencing or recovering from a recent relapse in the 30 days preceding the Screening Visit
A Kurtzke Expanded Disability Status Scale (EDSS) score of 1.0 to 6.0, inclusive at the Screening Visit
High or mixed affinity binder of the TSPO, as determined by rs6971 polymorphism genotyping at screening
Exclusion Criteria:
Diagnosis of primary progressive or non-relapsing secondary progressive MS
Smoking more than 10 cigarettes per day or use of a nicotine patch
Known history of, or positive screening test result for hepatitis C virus or hepatitis B virus
Varicella or herpes zoster virus infection or any severe viral infection within 6 weeks before Screening
Any type of live virus vaccine from 4 weeks before randomization
History of abnormal laboratory results
Sites / Locations
- Site Reference ID/Investigator# 141463
- Site Reference ID/Investigator# 141461
Arms of the Study
Arm 1
Experimental
ABT-555
ABT-555 will be administered at Visit 4 for Part 2 only