Study is designed to show a lack of effect on white blood cells circulating in the spinal fluid.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
NONE
Enrollment
49
2 lumbar punctures prior to treatment; study drug 225mg SC once a month X 3 doses.
1 lumbar puncture before and after 3 doses; study drug 225mg SC once a month X 3 doses.
AKH Wien Universitaetsklinik fuer Innere Medizin III Klinische Abteilung fuer Gastroenterologie und
Vienna, Austria
Hopital Erasme
Brussels, Belgium
UZ Gasthuisberg
Leuven, Belgium
Hopital Cardiologique
Cohort 2: Baseline Absolute Lymphocyte Count in Cerebrospinal Fluid (CSF)
The primary CSF endpoint of Cohort 2 was the percent change from baseline in absolute lymphocyte counts in CSF after 3 doses of PF-00547659. The hypothesis for the primary endpoint was evaluated using the CSF evaluable population in Cohort 2. CSF samples were obtained via lumbar puncture and analyzed by fluorescence-activated cell sorting (FACS) for total lymphocyte counts. Lumbar punctures were performed by a highly qualified physician using a 20-22 gauge needle, preferably an atraumatic needle.
Time frame: Baseline
Cohort 2: Percent Change From Baseline in Absolute Lymphocyte Count in CSF at Month 3
The primary CSF endpoint of Cohort 2 was the percent change from baseline in absolute lymphocyte counts in CSF after 3 doses of PF-00547659. The hypothesis for the primary endpoint was evaluated using the CSF evaluable population in Cohort 2. CSF samples were obtained via lumbar puncture and analyzed by FACS for total lymphocyte counts. Lumbar punctures were performed by a highly qualified physician using a 20-22 gauge needle, preferably an atraumatic needle.
Time frame: Baseline, Month 3
Cohorts 1 and 2: Total Number of Participants With Non-Lumbar Puncture (LP) Related Treatment-Emergent Adverse Events (AEs), Withdrawals Due to AEs, and Serious Adverse Events (SAEs) During the 12-week Treatment Period
An AE was any untoward medical occurrence attributed to study drug in a participant who received study drug. An SAE was an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly/birth defect. Treatment-emergent for this measure are events between first dose of study drug and up to 85 days (Week 12) after last dose that were absent before treatment or that worsened relative to pretreatment state. AEs included serious and non-serious AEs.
Time frame: Baseline up to Week 12
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Lille, France
Hopital Huriez, CHRU de Lille
Lille, France
Hopital Saint-Louis - CIC
Paris, France
Hopital Saint-Louis
Paris, France
Charité, Universitaetsmedizin Berlin, Campus Virchow Klinikum,
Berlin, Germany
Academic Medical Center - University of Amsterdam, Dept. of Gastroenterology
Amsterdam, Netherlands
Cohorts 1 and 2: Number of Participants Who Developed Anti-Drug Antibodies (ADAs) to PF-00547659
Serum samples were analysed for presence of ADAs to PF-00547659. Participants who showed positive results for PF-00547659 were reported.
Time frame: Day 1; Weeks 4, 8, 9-11 (Cohort 2 only), 12, 20, 28, and 36; Early Withdrawal
Cohorts 1 and 2: Number of Participants With Injection Site Reactions by Severity
Injection site reaction AEs include: injection site irritation, injection site pain, injection site rash, contusion, and erythema.
Time frame: Baseline till End of Study/Early Withdrawal, up to Week 12