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Evaluate the Efficacy and Safety of Fasinumab in Patients With Moderate-to-Severe Chronic Low Back Pain and Osteoarthritis of the Hip or Knee

A Phase 3, Randomized, Double-Blind, Placebo-Controlled Study to Evaluate the Efficacy and Safety of Fasinumab in Patients With Moderate-to-Severe Chronic Low Back Pain and Osteoarthritis of the Hip or Knee

Status
Terminated
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03285646
Acronym
FACT CLBP 1
Enrollment
63
Registered
2017-09-18
Start date
2017-10-30
Completion date
2019-05-02
Last updated
2021-06-30

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Chronic Low Back Pain, Osteoarthritis

Keywords

Knee, Hip

Brief summary

The primary objective of the study is to evaluate the efficacy of fasinumab in relieving Chronic low back pain (CLBP) as compared to placebo in participants with a clinical diagnosis of moderate-to-severe non-radicular CLBP and Osteoarthritis (OA) of the knee or hip when treated for up to 16 weeks. The secondary objectives of the study are: To evaluate the safety and tolerability of fasinumab compared to placebo when participants with a clinical diagnosis of moderate-to-severe non-radicular CLBP and OA of the knee or hip are treated for up to 16 weeks; To characterize the concentrations of fasinumab in serum over time when participants with a clinical diagnosis of moderate-to-severe non-radicular CLBP and OA of the knee or hip are treated for up to 16 weeks; To evaluate the immunogenicity of fasinumab when treated for up to 16 weeks in participants with a clinical diagnosis of moderate-to-severe non-radicular CLBP and OA of the knee or hip.

Interventions

Subcutaneous (SC) every 4 weeks (Q4W)

DRUGPlacebo

Subcutaneous (SC) every 4 weeks (Q4W)

Sponsors

Teva Pharmaceutical Industries, Ltd.
CollaboratorINDUSTRY
Regeneron Pharmaceuticals
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

Key Inclusion Criteria: 1. Clinical diagnosis of non-radicular moderate-to-severe CLBP for ≥3 months (prior to screening visit) 2. Clinical diagnosis of OA in at least 1 hip or knee joint based on the American College of Rheumatology Criteria with radiographic evidence of OA (K-L ≥2) at screening 3. History of inadequate relief of CLBP from non-pharmacologic therapy 4. Willing to undergo joint replacement (JR) surgery, if necessary 5. History of regular analgesic medication use 6. History of inadequate pain relief or intolerance to analgesics used for chronic LBP Key

Exclusion criteria

1. Patient is not a candidate for MRI 2. History of major trauma or back surgery in the past 6 months prior to the screening visit 3. History or presence of pyriformis syndrome 4. Evidence on baseline lumbar spine magnetic resonance imaging of potentially confounding conditions 5. History or evidence on joint imaging of conditions that may confound joint safety evaluation 6. Evidence or symptoms consistent with autonomic dysfunction (e.g., orthostatic hypotension and/or autonomic symptoms) as defined in the protocol 7. Recent use of longer acting pain medications 8. Other medical conditions that may interfere with participation or accurate assessments during the trial Note: Other protocol defined Inclusion/

Design outcomes

Primary

MeasureTime frameDescription
Change From Baseline to Week 16 in the Average Daily Low Back Pain Intensity (LBPI) Numeric Rating Scale (NRS) ScoreWeek 1, Week 2, Week 4, Week 8, Week 12, Week 16Average daily low back pain (LBP) was assessed on an 11-point numeric rating scale (NRS) and was defined as the average of the non-missing daily LBPI NRS scores for the 7 days before and including nominal visit. Participants described their average low back pain during the past 24 hours on a scale ranging from 0 (no pain) to 10 (worst possible pain), where higher scores indicate higher pain.

Secondary

MeasureTime frameDescription
Change From Baseline to Week 16 in Patient Global Assessment (PGA) of Low Back Pain (LBP) ScoreWeek 2, Week 4, Week 8, Week 12, Week 16The PGA of LBP is a participant assessed 5 point Likert scale of LBP ranging from 1-5 where 1 = very well; 2 = well; 3 = fair; 4 = poor; and 5 = very poor.
Number of Participants Achieving ≥30% Reduction From Baseline to Week 16 in Average Daily LBPI NRS ScoreWeek 16Average daily low back pain (LBP) was assessed on an 11-point numeric rating scale (NRS) and was defined as the average of the non-missing daily LBPI NRS scores for the 7 days before and including nominal visit. Participants described their average low back pain during the past 24 hours on a scale ranging from 0 (no pain) to 10 (worst possible pain), where higher scores indicate higher pain.
Change From Baseline to Week 16 in the Brief Pain Inventory-Short Form (BPI-sf) Pain Interference ScoreWeek 2, Week 4, Week 8, Week 12, Week 16The BPI-sf is a self-administered questionnaire for participants to rate the severity of their pain and the degree to which their pain interferes with common dimensions of feeling and function. With a recall period of 24 hours, the questionnaire contains the front and back body diagrams, the 4 pain severity items and 7 pain interference items rated on 0-10 scale; total interference score ranges from 0-10 (0, does not interfere; 10 completely interferes), and the question about percentage of pain relief by analgesics. The BPI pain interference is typically scored as the mean of the 7 interference items.
Number of Adjudicated Arthropathy (AA) EventsUp to Week 36Adjudicated arthropathy (AA) is a composite term that encompasses the following conditions: Rapidly progressive OA type 1 and 2, Subchondral insufficiency fractures, and Primary Osteonecrosis. AAs were also evaluated to determine if they met Destructive Arthropathy criteria.
Number of Adjudicated Arthropathy (AA) Events Meeting Destructive Arthropathy (DA) CriteriaUp to Week 36Destructive arthropathy (DA) is a unique clinical form of rapidly destructive arthropathy over and above that seen in the normal progression of OA. DA criteria can be associated with Rapidly Progressive Osteoarthritis type 2, Subchondral Insufficiency fracture, and Primary Osteonecrosis.
Number of Treatment-Emergent Adverse Events (TEAEs)Up to Week 16Treatment-emergent adverse events (TEAEs) are defined as those that are not present at baseline or represent the exacerbation of a pre-existing condition during the on-treatment period.
Change From Baseline to Week 16 in the Roland Morris Disability Questionnaire (RMDQ) Total ScoreWeek 2, Week 4, Week 8, Week 12, Week 16The RMDQ is a self-administered, health status measure for lower back pain (LBP). It measures pain and function using 24 items describing limitations to everyday life that can be caused by LBP. The score of the RMDQ is the total number of items checked from a minimum of 0 (no disability) to a maximum of 24 (maximum disability), where lower scores are indicative of better function.
Number of Peripheral Sensory Adverse Events (AEs) That Require a Neurology ConsultationUp to Week 36Any peripheral sensory AE (eg, paraesthesia and hypoaesthesia) that required a neurology consultation.
Number of All-Cause Joint Replacement (JR) Surgery EventsUp to Week 36All joint replacement surgery events regardless of cause.
Number of Joint Replacement (JR) Surgery Events Reported at Telephone Survey After Last Dose of Study DrugUp to Week 64An end of study phone contact was conducted approximately 52 weeks following the last dose of study drug (week 12) to evaluate the number of participants who had undergone or were scheduled for JR surgery.
Number of Participants With at Least One Positive Anti-Drug Antibody (ADA) Assay16 WeeksSamples for Anti-Drug Antibody (ADA) evaluation were collected at baseline and at subsequent study visits. ADA variables include ADA status (+ or -) and titer as follows: Total participants negative in the ADA assay at all time points analyzed. Pre-existing immunoreactivity - positive response at baseline with all post-dose results negative, or a positive response at baseline with all post-dose responses less than 9-fold over baseline titer levels. Treatment emergent - post-dose positive result when baseline results were negative. Persistent - A positive result detected in at least 2 consecutive post baseline samples separated by at least a 16-week post baseline period, with no negative results in-between. Indeterminate - A positive result at the last collection time point analyzed only. Transient - Not persistent or indeterminate regardless of any missing samples. Treatment boosted - any post-dose positive result at least 9-fold over the baseline level when baseline is positive.
Serum Concentration of Functional Fasinumab Over TimeBaseline, Week 2, Week 4, Week 8, Week 16Summary of mean concentration of functional fasinumab are presented by nominal time point.
Number of Sympathetic Nervous System (SNS) Dysfunction EventsUp to Week 36Potential events of sympathetic nervous system (SNS) dysfunction were monitored throughout the study through physical examination, AE reporting, assessment of orthostatic hypotension, and the Survey of Autonomic Symptoms. Sympathetic nervous system dysfunction was diagnosed after consultation with an appropriate specialist, such as a neurologist and/or cardiologist.

Countries

United States

Participant flow

Recruitment details

Participants were screened for study eligibility across the US. Of the 377 participants screened, 63 met eligibility criteria. The most frequently reported reason for non-randomization was inclusion criteria not met and/or exclusion criteria met (224 participants):139 did not meet inclusion criteria, 86 participants met exclusion criteria.

Pre-assignment details

The study consisted of a screening period of up to 30 days and a 7 (+3 day) day pre-randomization period during which all pain medication except study-provided rescue medication was discontinued.

Participants by arm

ArmCount
Fasinumab-matching Placebo
Participants received fasinumab-matching placebo subcutaneously (SC) every 4 weeks (Q4W) from day 1 through week 12 of the 16 week treatment period. Participants were permitted to use only acetaminophen/paracetamol as rescue medication. The treatment period included both study visits and a phone contact on day 8 (±1 day) up to 16 weeks.
32
Fasinumab 3 mg SC Q4W
Participants received fasinumab 3 milligrams (mg) subcutaneously (SC) every 4 weeks (Q4W) from day 1 through week 12 of the 16 week treatment period. Participants were permitted to use only acetaminophen/paracetamol as rescue medication. The treatment period included both study visits and a phone contact on day 8 (±1 day) up to 16 weeks.
31
Total63

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyAdverse Event10
Overall StudyInvestigator/Sponsor Decision01
Overall StudyLost to Follow-up21
Overall StudyWithdrawal by Subject102

Baseline characteristics

CharacteristicFasinumab-matching PlaceboFasinumab 3 mg SC Q4WTotal
Age, Continuous57.7 years
STANDARD_DEVIATION 9.88
60.0 years
STANDARD_DEVIATION 10.52
58.8 years
STANDARD_DEVIATION 10.18
Average Daily Low Back Pain Intensity (LBPI) Numerical Rating Scale (NRS) Score6.66 Score on a Scale
STANDARD_DEVIATION 1.475
6.81 Score on a Scale
STANDARD_DEVIATION 1.338
6.73 Score on a Scale
STANDARD_DEVIATION 1.4
Ethnicity (NIH/OMB)
Hispanic or Latino
1 Participants3 Participants4 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
31 Participants28 Participants59 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race/Ethnicity, Customized
American Indian or Alaska Native
1 Participants0 Participants1 Participants
Race/Ethnicity, Customized
Black or African American
15 Participants14 Participants29 Participants
Race/Ethnicity, Customized
Native Hawaiian or Other Pacific Islander
1 Participants0 Participants1 Participants
Race/Ethnicity, Customized
White
15 Participants17 Participants32 Participants
Sex: Female, Male
Female
21 Participants18 Participants39 Participants
Sex: Female, Male
Male
11 Participants13 Participants24 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 320 / 31
other
Total, other adverse events
14 / 324 / 31
serious
Total, serious adverse events
1 / 322 / 31

Outcome results

Primary

Change From Baseline to Week 16 in the Average Daily Low Back Pain Intensity (LBPI) Numeric Rating Scale (NRS) Score

Average daily low back pain (LBP) was assessed on an 11-point numeric rating scale (NRS) and was defined as the average of the non-missing daily LBPI NRS scores for the 7 days before and including nominal visit. Participants described their average low back pain during the past 24 hours on a scale ranging from 0 (no pain) to 10 (worst possible pain), where higher scores indicate higher pain.

Time frame: Week 1, Week 2, Week 4, Week 8, Week 12, Week 16

Population: Number of Participants analyzed = Participants evaluable for this endpoint

ArmMeasureGroupValue (MEAN)Dispersion
Fasinumab-matching PlaceboChange From Baseline to Week 16 in the Average Daily Low Back Pain Intensity (LBPI) Numeric Rating Scale (NRS) ScoreChange from Baseline to Week 2-0.98 Score on a ScaleStandard Deviation 1.588
Fasinumab-matching PlaceboChange From Baseline to Week 16 in the Average Daily Low Back Pain Intensity (LBPI) Numeric Rating Scale (NRS) ScoreChange from Baseline to Week 1-0.73 Score on a ScaleStandard Deviation 1.424
Fasinumab-matching PlaceboChange From Baseline to Week 16 in the Average Daily Low Back Pain Intensity (LBPI) Numeric Rating Scale (NRS) ScoreChange from Baseline to Week 4-1.28 Score on a ScaleStandard Deviation 1.878
Fasinumab-matching PlaceboChange From Baseline to Week 16 in the Average Daily Low Back Pain Intensity (LBPI) Numeric Rating Scale (NRS) ScoreChange from Baseline to Week 8-1.21 Score on a ScaleStandard Deviation 1.568
Fasinumab-matching PlaceboChange From Baseline to Week 16 in the Average Daily Low Back Pain Intensity (LBPI) Numeric Rating Scale (NRS) ScoreChange from Baseline to Week 12-2.12 Score on a ScaleStandard Deviation 1.582
Fasinumab-matching PlaceboChange From Baseline to Week 16 in the Average Daily Low Back Pain Intensity (LBPI) Numeric Rating Scale (NRS) ScoreChange from Baseline to Week 16-0.77 Score on a ScaleStandard Deviation 1.943
Fasinumab 3 mg SC Q4WChange From Baseline to Week 16 in the Average Daily Low Back Pain Intensity (LBPI) Numeric Rating Scale (NRS) ScoreChange from Baseline to Week 4-2.64 Score on a ScaleStandard Deviation 2.038
Fasinumab 3 mg SC Q4WChange From Baseline to Week 16 in the Average Daily Low Back Pain Intensity (LBPI) Numeric Rating Scale (NRS) ScoreChange from Baseline to Week 16-2.32 Score on a ScaleStandard Deviation 1.367
Fasinumab 3 mg SC Q4WChange From Baseline to Week 16 in the Average Daily Low Back Pain Intensity (LBPI) Numeric Rating Scale (NRS) ScoreChange from Baseline to Week 12-3.18 Score on a ScaleStandard Deviation 2.046
Fasinumab 3 mg SC Q4WChange From Baseline to Week 16 in the Average Daily Low Back Pain Intensity (LBPI) Numeric Rating Scale (NRS) ScoreChange from Baseline to Week 1-1.62 Score on a ScaleStandard Deviation 2.037
Fasinumab 3 mg SC Q4WChange From Baseline to Week 16 in the Average Daily Low Back Pain Intensity (LBPI) Numeric Rating Scale (NRS) ScoreChange from Baseline to Week 2-2.15 Score on a ScaleStandard Deviation 2.067
Fasinumab 3 mg SC Q4WChange From Baseline to Week 16 in the Average Daily Low Back Pain Intensity (LBPI) Numeric Rating Scale (NRS) ScoreChange from Baseline to Week 8-2.82 Score on a ScaleStandard Deviation 1.963
Secondary

Change From Baseline to Week 16 in Patient Global Assessment (PGA) of Low Back Pain (LBP) Score

The PGA of LBP is a participant assessed 5 point Likert scale of LBP ranging from 1-5 where 1 = very well; 2 = well; 3 = fair; 4 = poor; and 5 = very poor.

Time frame: Week 2, Week 4, Week 8, Week 12, Week 16

Population: Number of Participants Analyzed = Participants evaluable for this endpoint

ArmMeasureGroupValue (MEAN)Dispersion
Fasinumab-matching PlaceboChange From Baseline to Week 16 in Patient Global Assessment (PGA) of Low Back Pain (LBP) ScoreChange from Baseline to Week 4-0.60 Score on a ScaleStandard Deviation 0.957
Fasinumab-matching PlaceboChange From Baseline to Week 16 in Patient Global Assessment (PGA) of Low Back Pain (LBP) ScoreChange from Baseline to Week 12-0.57 Score on a ScaleStandard Deviation 1.134
Fasinumab-matching PlaceboChange From Baseline to Week 16 in Patient Global Assessment (PGA) of Low Back Pain (LBP) ScoreChange from Baseline to Week 8-0.55 Score on a ScaleStandard Deviation 0.945
Fasinumab-matching PlaceboChange From Baseline to Week 16 in Patient Global Assessment (PGA) of Low Back Pain (LBP) ScoreChange from Baseline to Week 160.00 Score on a Scale
Fasinumab-matching PlaceboChange From Baseline to Week 16 in Patient Global Assessment (PGA) of Low Back Pain (LBP) ScoreChange from Baseline to Week 2-0.44 Score on a ScaleStandard Deviation 0.751
Fasinumab 3 mg SC Q4WChange From Baseline to Week 16 in Patient Global Assessment (PGA) of Low Back Pain (LBP) ScoreChange from Baseline to Week 16-0.75 Score on a ScaleStandard Deviation 0.5
Fasinumab 3 mg SC Q4WChange From Baseline to Week 16 in Patient Global Assessment (PGA) of Low Back Pain (LBP) ScoreChange from Baseline to Week 2-0.76 Score on a ScaleStandard Deviation 0.786
Fasinumab 3 mg SC Q4WChange From Baseline to Week 16 in Patient Global Assessment (PGA) of Low Back Pain (LBP) ScoreChange from Baseline to Week 4-1.04 Score on a ScaleStandard Deviation 0.676
Fasinumab 3 mg SC Q4WChange From Baseline to Week 16 in Patient Global Assessment (PGA) of Low Back Pain (LBP) ScoreChange from Baseline to Week 8-1.10 Score on a ScaleStandard Deviation 1.021
Fasinumab 3 mg SC Q4WChange From Baseline to Week 16 in Patient Global Assessment (PGA) of Low Back Pain (LBP) ScoreChange from Baseline to Week 12-1.00 Score on a ScaleStandard Deviation 1.333
Secondary

Change From Baseline to Week 16 in the Brief Pain Inventory-Short Form (BPI-sf) Pain Interference Score

The BPI-sf is a self-administered questionnaire for participants to rate the severity of their pain and the degree to which their pain interferes with common dimensions of feeling and function. With a recall period of 24 hours, the questionnaire contains the front and back body diagrams, the 4 pain severity items and 7 pain interference items rated on 0-10 scale; total interference score ranges from 0-10 (0, does not interfere; 10 completely interferes), and the question about percentage of pain relief by analgesics. The BPI pain interference is typically scored as the mean of the 7 interference items.

Time frame: Week 2, Week 4, Week 8, Week 12, Week 16

Population: Number of Participants Analyzed = Participants evaluable for this endpoint

ArmMeasureGroupValue (MEAN)Dispersion
Fasinumab-matching PlaceboChange From Baseline to Week 16 in the Brief Pain Inventory-Short Form (BPI-sf) Pain Interference ScoreChange from Baseline to Week 4-1.49 Score on a ScaleStandard Deviation 2.39
Fasinumab-matching PlaceboChange From Baseline to Week 16 in the Brief Pain Inventory-Short Form (BPI-sf) Pain Interference ScoreChange from Baseline to Week 8-1.31 Score on a ScaleStandard Deviation 2.119
Fasinumab-matching PlaceboChange From Baseline to Week 16 in the Brief Pain Inventory-Short Form (BPI-sf) Pain Interference ScoreChange from Baseline to Week 12-1.63 Score on a ScaleStandard Deviation 2.096
Fasinumab-matching PlaceboChange From Baseline to Week 16 in the Brief Pain Inventory-Short Form (BPI-sf) Pain Interference ScoreChange from Baseline to Week 16-1.14 Score on a Scale
Fasinumab-matching PlaceboChange From Baseline to Week 16 in the Brief Pain Inventory-Short Form (BPI-sf) Pain Interference ScoreChange from Baseline to Week 2-1.55 Score on a ScaleStandard Deviation 2.306
Fasinumab 3 mg SC Q4WChange From Baseline to Week 16 in the Brief Pain Inventory-Short Form (BPI-sf) Pain Interference ScoreChange from Baseline to Week 16-1.29 Score on a ScaleStandard Deviation 3.017
Fasinumab 3 mg SC Q4WChange From Baseline to Week 16 in the Brief Pain Inventory-Short Form (BPI-sf) Pain Interference ScoreChange from Baseline to Week 4-2.15 Score on a ScaleStandard Deviation 2.157
Fasinumab 3 mg SC Q4WChange From Baseline to Week 16 in the Brief Pain Inventory-Short Form (BPI-sf) Pain Interference ScoreChange from Baseline to Week 8-2.70 Score on a ScaleStandard Deviation 2.774
Fasinumab 3 mg SC Q4WChange From Baseline to Week 16 in the Brief Pain Inventory-Short Form (BPI-sf) Pain Interference ScoreChange from Baseline to Week 12-1.84 Score on a ScaleStandard Deviation 1.978
Fasinumab 3 mg SC Q4WChange From Baseline to Week 16 in the Brief Pain Inventory-Short Form (BPI-sf) Pain Interference ScoreChange from Baseline to Week 2-1.94 Score on a ScaleStandard Deviation 2.255
Secondary

Change From Baseline to Week 16 in the Roland Morris Disability Questionnaire (RMDQ) Total Score

The RMDQ is a self-administered, health status measure for lower back pain (LBP). It measures pain and function using 24 items describing limitations to everyday life that can be caused by LBP. The score of the RMDQ is the total number of items checked from a minimum of 0 (no disability) to a maximum of 24 (maximum disability), where lower scores are indicative of better function.

Time frame: Week 2, Week 4, Week 8, Week 12, Week 16

Population: Number of Participants Analyzed = Participants evaluable for this endpoint

ArmMeasureGroupValue (MEAN)Dispersion
Fasinumab-matching PlaceboChange From Baseline to Week 16 in the Roland Morris Disability Questionnaire (RMDQ) Total ScoreChange from Baseline to Week 2-2.70 Score on a ScaleStandard Deviation 5.12
Fasinumab-matching PlaceboChange From Baseline to Week 16 in the Roland Morris Disability Questionnaire (RMDQ) Total ScoreChange from Baseline to Week 4-1.92 Score on a ScaleStandard Deviation 4.529
Fasinumab-matching PlaceboChange From Baseline to Week 16 in the Roland Morris Disability Questionnaire (RMDQ) Total ScoreChange from Baseline to Week 80.37 Score on a ScaleStandard Deviation 4.487
Fasinumab-matching PlaceboChange From Baseline to Week 16 in the Roland Morris Disability Questionnaire (RMDQ) Total ScoreChange from Baseline to Week 120.83 Score on a ScaleStandard Deviation 3.061
Fasinumab-matching PlaceboChange From Baseline to Week 16 in the Roland Morris Disability Questionnaire (RMDQ) Total ScoreChange from Baseline to Week 16-1.00 Score on a Scale
Fasinumab 3 mg SC Q4WChange From Baseline to Week 16 in the Roland Morris Disability Questionnaire (RMDQ) Total ScoreChange from Baseline to Week 2-2.54 Score on a ScaleStandard Deviation 4.836
Fasinumab 3 mg SC Q4WChange From Baseline to Week 16 in the Roland Morris Disability Questionnaire (RMDQ) Total ScoreChange from Baseline to Week 4-3.09 Score on a ScaleStandard Deviation 3.884
Fasinumab 3 mg SC Q4WChange From Baseline to Week 16 in the Roland Morris Disability Questionnaire (RMDQ) Total ScoreChange from Baseline to Week 16-5.75 Score on a ScaleStandard Deviation 3.948
Fasinumab 3 mg SC Q4WChange From Baseline to Week 16 in the Roland Morris Disability Questionnaire (RMDQ) Total ScoreChange from Baseline to Week 12-3.33 Score on a ScaleStandard Deviation 4.301
Fasinumab 3 mg SC Q4WChange From Baseline to Week 16 in the Roland Morris Disability Questionnaire (RMDQ) Total ScoreChange from Baseline to Week 8-4.18 Score on a ScaleStandard Deviation 5.015
Secondary

Number of Adjudicated Arthropathy (AA) Events

Adjudicated arthropathy (AA) is a composite term that encompasses the following conditions: Rapidly progressive OA type 1 and 2, Subchondral insufficiency fractures, and Primary Osteonecrosis. AAs were also evaluated to determine if they met Destructive Arthropathy criteria.

Time frame: Up to Week 36

ArmMeasureValue (NUMBER)
Fasinumab-matching PlaceboNumber of Adjudicated Arthropathy (AA) Events0 Adjudicated Arthropathy (AA) Events
Fasinumab 3 mg SC Q4WNumber of Adjudicated Arthropathy (AA) Events2 Adjudicated Arthropathy (AA) Events
Secondary

Number of Adjudicated Arthropathy (AA) Events Meeting Destructive Arthropathy (DA) Criteria

Destructive arthropathy (DA) is a unique clinical form of rapidly destructive arthropathy over and above that seen in the normal progression of OA. DA criteria can be associated with Rapidly Progressive Osteoarthritis type 2, Subchondral Insufficiency fracture, and Primary Osteonecrosis.

Time frame: Up to Week 36

ArmMeasureValue (NUMBER)
Fasinumab-matching PlaceboNumber of Adjudicated Arthropathy (AA) Events Meeting Destructive Arthropathy (DA) Criteria0 Destructive Arthropathy (DA) Events
Fasinumab 3 mg SC Q4WNumber of Adjudicated Arthropathy (AA) Events Meeting Destructive Arthropathy (DA) Criteria0 Destructive Arthropathy (DA) Events
Secondary

Number of All-Cause Joint Replacement (JR) Surgery Events

All joint replacement surgery events regardless of cause.

Time frame: Up to Week 36

ArmMeasureValue (NUMBER)
Fasinumab-matching PlaceboNumber of All-Cause Joint Replacement (JR) Surgery Events2 Joint Replacement (JR) Surgery Events
Fasinumab 3 mg SC Q4WNumber of All-Cause Joint Replacement (JR) Surgery Events1 Joint Replacement (JR) Surgery Events
Secondary

Number of Joint Replacement (JR) Surgery Events Reported at Telephone Survey After Last Dose of Study Drug

An end of study phone contact was conducted approximately 52 weeks following the last dose of study drug (week 12) to evaluate the number of participants who had undergone or were scheduled for JR surgery.

Time frame: Up to Week 64

ArmMeasureValue (NUMBER)
Fasinumab-matching PlaceboNumber of Joint Replacement (JR) Surgery Events Reported at Telephone Survey After Last Dose of Study Drug0 Joint Replacement (JR) Surgery Events
Fasinumab 3 mg SC Q4WNumber of Joint Replacement (JR) Surgery Events Reported at Telephone Survey After Last Dose of Study Drug0 Joint Replacement (JR) Surgery Events
Secondary

Number of Participants Achieving ≥30% Reduction From Baseline to Week 16 in Average Daily LBPI NRS Score

Average daily low back pain (LBP) was assessed on an 11-point numeric rating scale (NRS) and was defined as the average of the non-missing daily LBPI NRS scores for the 7 days before and including nominal visit. Participants described their average low back pain during the past 24 hours on a scale ranging from 0 (no pain) to 10 (worst possible pain), where higher scores indicate higher pain.

Time frame: Week 16

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Fasinumab-matching PlaceboNumber of Participants Achieving ≥30% Reduction From Baseline to Week 16 in Average Daily LBPI NRS Score12 Participants
Fasinumab 3 mg SC Q4WNumber of Participants Achieving ≥30% Reduction From Baseline to Week 16 in Average Daily LBPI NRS Score21 Participants
Secondary

Number of Participants With at Least One Positive Anti-Drug Antibody (ADA) Assay

Samples for Anti-Drug Antibody (ADA) evaluation were collected at baseline and at subsequent study visits. ADA variables include ADA status (+ or -) and titer as follows: Total participants negative in the ADA assay at all time points analyzed. Pre-existing immunoreactivity - positive response at baseline with all post-dose results negative, or a positive response at baseline with all post-dose responses less than 9-fold over baseline titer levels. Treatment emergent - post-dose positive result when baseline results were negative. Persistent - A positive result detected in at least 2 consecutive post baseline samples separated by at least a 16-week post baseline period, with no negative results in-between. Indeterminate - A positive result at the last collection time point analyzed only. Transient - Not persistent or indeterminate regardless of any missing samples. Treatment boosted - any post-dose positive result at least 9-fold over the baseline level when baseline is positive.

Time frame: 16 Weeks

Population: Anti-Drug Antibody (ADA) analysis set: All treated participants who received any study drug or placebo (safety analysis set) and had at least one non-missing anti-drug antibody result following the first dose of study drug or placebo

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
Fasinumab-matching PlaceboNumber of Participants With at Least One Positive Anti-Drug Antibody (ADA) AssayTreatment Boosted0 Participants
Fasinumab-matching PlaceboNumber of Participants With at Least One Positive Anti-Drug Antibody (ADA) AssayTreatment-Emergent: Persistent0 Participants
Fasinumab-matching PlaceboNumber of Participants With at Least One Positive Anti-Drug Antibody (ADA) AssayNegative/Pre-Existing31 Participants
Fasinumab-matching PlaceboNumber of Participants With at Least One Positive Anti-Drug Antibody (ADA) AssayTreatment-Emergent: Transient0 Participants
Fasinumab-matching PlaceboNumber of Participants With at Least One Positive Anti-Drug Antibody (ADA) AssayTreatment-Emergent: Indeterminate0 Participants
Fasinumab-matching PlaceboNumber of Participants With at Least One Positive Anti-Drug Antibody (ADA) AssayTreatment-Emergent0 Participants
Fasinumab 3 mg SC Q4WNumber of Participants With at Least One Positive Anti-Drug Antibody (ADA) AssayTreatment-Emergent: Indeterminate0 Participants
Fasinumab 3 mg SC Q4WNumber of Participants With at Least One Positive Anti-Drug Antibody (ADA) AssayNegative/Pre-Existing31 Participants
Fasinumab 3 mg SC Q4WNumber of Participants With at Least One Positive Anti-Drug Antibody (ADA) AssayTreatment Boosted0 Participants
Fasinumab 3 mg SC Q4WNumber of Participants With at Least One Positive Anti-Drug Antibody (ADA) AssayTreatment-Emergent0 Participants
Fasinumab 3 mg SC Q4WNumber of Participants With at Least One Positive Anti-Drug Antibody (ADA) AssayTreatment-Emergent: Persistent0 Participants
Fasinumab 3 mg SC Q4WNumber of Participants With at Least One Positive Anti-Drug Antibody (ADA) AssayTreatment-Emergent: Transient0 Participants
Secondary

Number of Peripheral Sensory Adverse Events (AEs) That Require a Neurology Consultation

Any peripheral sensory AE (eg, paraesthesia and hypoaesthesia) that required a neurology consultation.

Time frame: Up to Week 36

ArmMeasureGroupValue (NUMBER)
Fasinumab-matching PlaceboNumber of Peripheral Sensory Adverse Events (AEs) That Require a Neurology ConsultationParaesthesia events1 Peripheral Sensory Adverse Events (AEs)
Fasinumab-matching PlaceboNumber of Peripheral Sensory Adverse Events (AEs) That Require a Neurology ConsultationHypoaesthesia events1 Peripheral Sensory Adverse Events (AEs)
Fasinumab 3 mg SC Q4WNumber of Peripheral Sensory Adverse Events (AEs) That Require a Neurology ConsultationHypoaesthesia events0 Peripheral Sensory Adverse Events (AEs)
Fasinumab 3 mg SC Q4WNumber of Peripheral Sensory Adverse Events (AEs) That Require a Neurology ConsultationParaesthesia events0 Peripheral Sensory Adverse Events (AEs)
Secondary

Number of Sympathetic Nervous System (SNS) Dysfunction Events

Potential events of sympathetic nervous system (SNS) dysfunction were monitored throughout the study through physical examination, AE reporting, assessment of orthostatic hypotension, and the Survey of Autonomic Symptoms. Sympathetic nervous system dysfunction was diagnosed after consultation with an appropriate specialist, such as a neurologist and/or cardiologist.

Time frame: Up to Week 36

ArmMeasureValue (NUMBER)
Fasinumab-matching PlaceboNumber of Sympathetic Nervous System (SNS) Dysfunction Events0 Sympathetic NS Dysfunction Events
Fasinumab 3 mg SC Q4WNumber of Sympathetic Nervous System (SNS) Dysfunction Events0 Sympathetic NS Dysfunction Events
Secondary

Number of Treatment-Emergent Adverse Events (TEAEs)

Treatment-emergent adverse events (TEAEs) are defined as those that are not present at baseline or represent the exacerbation of a pre-existing condition during the on-treatment period.

Time frame: Up to Week 16

ArmMeasureValue (NUMBER)
Fasinumab-matching PlaceboNumber of Treatment-Emergent Adverse Events (TEAEs)33 Treatment-Emergent Adverse Events
Fasinumab 3 mg SC Q4WNumber of Treatment-Emergent Adverse Events (TEAEs)14 Treatment-Emergent Adverse Events
Secondary

Serum Concentration of Functional Fasinumab Over Time

Summary of mean concentration of functional fasinumab are presented by nominal time point.

Time frame: Baseline, Week 2, Week 4, Week 8, Week 16

Population: Number of Participants Analyzed = Participants evaluable for this endpoint

ArmMeasureGroupValue (MEAN)Dispersion
Fasinumab-matching PlaceboSerum Concentration of Functional Fasinumab Over TimeBaseline0 Milligram per Liter (mg/L)Standard Deviation 0
Fasinumab-matching PlaceboSerum Concentration of Functional Fasinumab Over TimeWeek 20.262 Milligram per Liter (mg/L)Standard Deviation 0.0992
Fasinumab-matching PlaceboSerum Concentration of Functional Fasinumab Over TimeWeek 40.176 Milligram per Liter (mg/L)Standard Deviation 0.0679
Fasinumab-matching PlaceboSerum Concentration of Functional Fasinumab Over TimeWeek 80.247 Milligram per Liter (mg/L)Standard Deviation 0.13
Fasinumab-matching PlaceboSerum Concentration of Functional Fasinumab Over TimeWeek 160.192 Milligram per Liter (mg/L)Standard Deviation 0.0932

Source: ClinicalTrials.gov · Data processed: Feb 28, 2026