The goal of this clinical trial is to learn about the effects of inflammation-lowering therapy on mobility and disability in older adults. The main questions it aims to answer are: * Will therapy improve walking speed/pace? * Will therapy improve levels of blood inflammation markers and other indicators of physical, cognitive and immune function? Participants will be asked to receive injections of drug or placebo every 4 weeks for 24 weeks. They will also be asked to undergo testing that assesses physical function, thinking ability and brain health, breathing capacity, and blood vessel stiffness, and will have blood samples collected to measure immune function and to create a bank of samples for future testing. Comparisons will be made between those who receive drug and those who receive placebo.
The primary objective of this trial is to assess the impact of inflammation-lowering therapy with clazakizumab 5 mg/month on speed when walking 400 meters in older adults. The investigators hypothesize that participants treated with clazakizumab will see a larger 6-month improvement in their pace on a 400-meter walk than those provided placebo. The aims of the study will be to: * To test the effect of clazakizumab 5 mg/month for 6 months on walking speed during a 400- meter corridor walk in adults 70 years of age and older with baseline levels of IL-6 ≥ 2.0 pg/ml and \< 30 pg/ml * To assess the effect of clazakizumab 5 mg/month on serum levels of free interleukin (IL-6), circulating C-reactive protein (CRP), and other inflammatory markers * To assess the effect of clazakizumab 5 mg/month on oxygen utilization (VO2) during submaximal steady-state walking in adults 70 years of age and older with baseline levels of IL-6 ≥ 2.0 pg/ml and \< 30 pg/ml, physical function, physical activity, perceived fatigability (overall, by questionnaire and in association with preferred and fixed speed walking), cognition, body weight, blood pressure, vascular stiffness, endothelial function, kidney function and immune function * To determine the safety and tolerability of clazakizumab 5 mg/month This study will randomize 60 community living men and women 70 years of age and older who have mildly elevated IL-6 at baseline (≥ 2.0 pg/ml and \< 30.0 pg/ml). Interested individuals will undergo telephone and in-person screening visits (two) to determine eligibility (blood will be collected to measure IL-6, height and weight will be measured, a 4m walk test will be administered to determine gait speed, and a review of medical history, medications, a physical exam, and blood safety labs will be conducted to ensure safety to proceed/eligibility). Randomization to study drug or placebo will take place within 60 days of the first in-person screening visit and subsequent injections will take place every 4 weeks for 24 weeks. Participants will undergo physical function testing (400m walk, preferred \& fixed speed walk on a treadmill with oxygen consumption measurement, short physical performance battery, grip strength, actigraphy), cognitive testing, and aortic pulse wave velocity and endothelial function testing. Height, weight and pulse will be measured. Participants will complete questionnaires to assess demographics, physical activity level, fatigability, sleep quality, pain and depression. Blood will be collected/processed to measure immune function and stored frozen to create a biorepository of samples (serum, plasma, buffy coat) for future testing. Participants will be monitored for safety in between injection visits and for 5 months following the final in-person research visit.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Enrollment
29
5 mg, subcutaneous injection, every 4 weeks for 24 weeks
5 mg, subcutaneous injection, every 4 weeks for 24 weeks
University of Pittsburgh, Health Studies Research Center
Pittsburgh, Pennsylvania, United States
Mean Change in Speed of Walking 400 Meters from Baseline to 24 Weeks
Assess effect of Clazakizumab versus placebo on speed of walking 400 meters (meters/second) from baseline to 24 weeks
Time frame: From enrollment (randomization/first drug injection visit) to the final research assessment visit (4 weeks after final drug injection visit or 24 weeks after enrollment)
Mean Change in Oxygen Consumption While Walking from Baseline to 24 Weeks
Assess effect of Clazakizumab versus placebo on change of oxygen consumption (VO2 measured as ml/kg/min) with fixed speed walking on treadmill from baseline to 24 weeks
Time frame: From baseline (randomization/first drug injection visit) to the final research assessment visit (24 weeks after baseline)
Mean Change in Physical Function using the Short Physical Performance Battery (SPPB) Score from Baseline to 24 Weeks
Assess effect of Clazakizumab versus placebo on change in Short Physical Performance Battery score (0-12 scale, higher score better) from baseline to 24 weeks
Time frame: From baseline (randomization/first drug injection visit) to the final research assessment visit (24 weeks after baseline)
Mean Change in Muscle (Grip) Strength from Baseline to 24 Weeks
Assess the effect of Clazakizumab versus placebo on change in muscle grip strength (kg) from baseline to 24 weeks
Time frame: From baseline (randomization/first drug injection visit) to the final research assessment visit (24 weeks after baseline)
Mean Change in Fatigue Level using the Pittsburgh Fatigability Score (PFS) from Baseline to 24 Weeks
Assess the effect of Clazakizumab versus placebo on change in Pittsburgh Fatigability Score (0-100 scale, higher score indicates greater mental \& physical fatigue) from baseline to 24 weeks
Time frame: From baseline (randomization/first drug injection visit) to the final research assessment visit (24 weeks after baseline)
Mean Change in Vascular Stiffness using Aortic Pulse Wave Velocity (APWV) from Baseline to 24 Weeks
Assess the effect of Clazakizumab versus placebo on change in Aortic Pulse Wave Velocity (cm/sec) from baseline to 24 weeks
Time frame: From baseline (randomization/first drug injection visit) to the final research assessment visit (24 weeks after baseline)
Mean Change in Peripheral Microvascular Endothelial Function using Peripheral Arterial Tonometry (EndoPat) from baseline to 24 weeks.
Assess the effect of Clazakizumab versus placebo on change in EndoPat derived indices: 1) reactive hyperemia index (RHI is a ratio; higher values indicate greater vessel vasodilator capacity) and 2) augmentation index (AI%; lower values indicate greater vessel elasticity) from baseline to 24 weeks.
Time frame: From baseline (randomization/first drug injection visit) to the final research assessment visit (24 weeks after baseline)
Mean Change in Cognitive Function using the Montreal Cognitive Assessment (MoCA) from Baseline to 24 Weeks
Assess the effect of Clazakizumab versus placebo on change in the Montreal Cognitive Assessment score (0-30 scale, higher is better) from baseline to 24 weeks
Time frame: From baseline (randomization/first drug injection visit) to the final research assessment visit (24 weeks after baseline)
Mean Change in Cognitive Function using the California Verbal Learning Test (CVLT) from Baseline to 24 Weeks
Assess the effect of Clazakizumab versus placebo on change in the number correct for short word recall and long word recall (0-16 words recalled, each of 5 trials, higher is better), and the number of word intrusions/repetitions using the California Verbal Learning Test from baseline to 24 weeks
Time frame: From baseline (randomization/first drug injection visit) to the final research assessment visit (24 weeks after baseline)
Mean Change in Cognitive Function using the Digit Symbol Substitution Test (DSST) from Baseline to 24 Weeks
Assess the effect of Clazakizumab versus placebo on change in the number correct in 90 seconds (higher is better) on the Digit Symbol Substitution Test from baseline to 24 weeks
Time frame: From baseline (randomization/first drug injection visit) to the final research assessment visit (24 weeks after baseline)
Mean Change in Cognitive Function using the Trails Making B (Trails B) from Baseline to 24 Weeks
Assess the effect of Clazakizumab versus placebo on change in the time to complete (seconds, lower is better) Trails Making Test B from baseline to 24 weeks
Time frame: From baseline (randomization/first drug injection visit) to the final research assessment visit (24 weeks after baseline)
Mean Change in Inflammatory Biomarker Interleukin 6 (IL-6) from Baseline to 24 Weeks
Assess the effect of Clazakizumab versus placebo on Interleukin 6 (pg/mL) from Baseline to 24 weeks
Time frame: From baseline (randomization/first drug injection visit) to the final research assessment visit (24 weeks after baseline)
Mean Change in Inflammatory Biomarker C-Reactive Protein (CRP) from Baseline to 24 Weeks
Assess the effect of Clazakizumab versus placebo on C-Reactive Protein (mg/dL) from Baseline to 24 weeks
Time frame: From baseline (randomization/first drug injection visit) to the final research assessment visit (24 weeks after baseline)
Assess Safety and Tolerability of Clazakizumab by Monitoring Adverse Events (AEs) and Serious Adverse Events (SAEs) From Baseline to 44 Weeks
Assess the number of study participants reporting Adverse Events and Severe Adverse Events following the drug injection visits, at the final research assessment visit (24 weeks after baseline), and every 4 weeks for 20 weeks after the final research assessment visit
Time frame: AEs and SAEs assessed weekly after randomization/first drug injection visit, one week after drug visits 2-6, at the final research assessment visit (24 weeks after baseline), and every 4 weeks for 20 weeks after the final research assessment visit
Assess Safety and Tolerability of Clazakizumab by Monitoring Safety Laboratory Values From Baseline to 24 Weeks
Compare the percent of participants (Clazakizumab versus placebo) with safety laboratory values for total white blood cell count, absolute neutrophil count, platelet count, liver function (alanine aminotransferase, aspartate aminotransferase and bilirubin, and lipids (total, HDL, and LDL cholesterol and triglycerides) outside of the normal range (as specified in the study protocol) to safely administer the study drug following the drug injection visits, and at the final research assessment visit (24 weeks after baseline).
Time frame: assessed weekly after randomization/first drug injection visit, one week after drug visits 2-6, at the final research assessment visit (24 weeks after baseline)
Assess Tolerability of Clazakizumab by Monitoring Adherence to Drug Administration From Baseline to 20 Weeks
Tolerability will be assessed as adherence to the protocol expressed as a percentage of doses received and percentage of drug dosing visits attended in those receiving Clazakizumab versus placebo assessed following each drug injection visit (randomization/first drug injection visit and drug visits 2-6) line).
Time frame: Assessed at the time of the drug injection visits from baseline (randomization/first injection) through drug visits 2-6.
Change in Dementia Biomarker Levels from Baseline to 24 Weeks.
Assess the effect of Clazakizumab versus placebo on dementia biomarker levels as measured in peripheral blood, from baseline to 24 weeks. These include 1) Aβ42 and Aβ40 amyloid, 2) phosphorylated tau protein neurofilament light chain, and 3) glial fibrillary acidic protein (all in pg/ml).
Time frame: From baseline (randomization/first drug injection visit) to the final research assessment visit (24 weeks after baseline)
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