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A Study Evaluating the Safety, Tolerability, and Efficacy of SM04690 Injected in the Target Knee Joint of Moderately to Severely Symptomatic Osteoarthritis Subjects

A Phase 2, Multicenter, Randomized, Double-Blind, Placebo-Controlled Study Evaluating the Safety, Tolerability, and Efficacy of SM04690 Injected in the Target Knee Joint of Moderately to Severely Symptomatic Osteoarthritis Subjects

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02536833
Enrollment
455
Registered
2015-09-01
Start date
2015-09-09
Completion date
2017-04-20
Last updated
2021-03-17

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

Conditions

Osteoarthritis

Keywords

Osteoarthritis, Samumed, SM04690

Brief summary

The purpose of this study is to assess the efficacy, safety, and tolerability of three different strengths of SM04690 injected in the target knee joint of moderately to severely symptomatic osteoarthritis (OA) subjects.

Interventions

DRUGPlacebo

Sponsors

Biosplice Therapeutics, Inc.
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
ALL
Age
40 Years to 80 Years
Healthy volunteers
No

Inclusion criteria

1. Males and females between 40 and 80 years of age, inclusive, in general good health 2. Ambulatory (single assistive devices such as canes allowed if needed less than 50% of the time, subjects requiring a walker are excluded) 3. Established diagnosis of primary femorotibial OA in the target knee by standard American College of Rheumatology (ACR) criteria for at least 6 months (clinical AND radiographic criteria); if bilateral knee OA is present, the target knee is defined as the knee with greater pain at screening based on the subject's evaluation and the Investigator's clinical judgment 4. Radiographic disease Stage 2 or 3 in the target knee according to the Kellgren-Lawrence grading of knee OA as assessed by independent central readers 5. Screening pain visual analog scale (VAS) score of 30-80 mm (on a scale of 0-100 mm) for the target knee while on symptomatic oral treatment at screening (if the subject requires oral treatment) 6. Total WOMAC score of 72-192 (out of 240) for the target knee while on symptomatic oral treatment at screening (if the subject requires oral treatment) 7. Willingness to omit the following for 24 hours prior to all Study Visits, excluding the Screening Visit: 1. Pain medications 2. Medications or supplements for the treatment of OA 3. Participation in a formalized in-office and/or supervised OA disease program (e.g., a prescribed patient education program, physiotherapy, etc.) 8. Full understanding of the requirements of the study and willingness to comply with all study visits and assessments 9. Subjects must have read and understood the informed consent form, and must have signed it prior to any study-related procedure being performed 10. Subject's Day 1 visit must occur while enrollment into the study is open

Exclusion criteria

1. Women who are pregnant or lactating 2. Women of childbearing potential (i.e., who are not surgically sterile or postmenopausal as defined by no menstrual periods for 12 consecutive months and no other biological or physiological cause for amenorrhea can be identified); males who are sexually active and have a partner who is capable of becoming pregnant, neither of which have had surgery to become sterilized, who are not using an effective method of birth control (e.g., surgically-implanted hormonal therapy, intrauterine devices or oral birth control with barrier method) 3. Body mass index (BMI) \>40 4. Partial or complete joint replacement in the target knee 5. Previous exposure to SM04690 6. Major surgery (e.g., interventional arthroscopy) in the target knee within 52 weeks prior to any study injection 7. Any planned or elective surgery during the study period 8. Significant and clinically evident misalignment of the target knee that would impact subject function, as determined by the Investigator 9. History of malignancy within the last 5 years; however, subjects with prior history of in situ cancer or basal or squamous cell skin cancer are eligible. Subjects with other malignancies are eligible if they have been continuously disease free for at least 5 years prior to any study injection 10. Clinically significant abnormal Screening Visit hematology values, blood chemistry values, HbA1c, or urinalysis values as determined by the investigator 11. Any condition, including laboratory findings (not included in the Screening Visit laboratory tests) and findings in the medical history or in the pre-study assessments, that, in the opinion of the Investigator, constitutes a risk or contraindication for participation in the study or that could interfere with the study objectives, conduct, or evaluation 12. Comorbid conditions that could affect pain assessment of the target knee, including, but not limited to, inflammatory rheumatic conditions such as rheumatoid arthritis, psoriatic arthritis, systemic lupus erythematosus, diabetic neuropathy, pseudogout, gout, and fibromyalgia 13. Other conditions that, in the opinion of the Investigator, could affect pain assessment of the target knee, including, but not limited to, symptomatic hip osteoarthritis and symptomatic degenerative disc disease 14. Any diagnosed psychiatric condition that includes, but is not limited to, a history of mania, bipolar disorder, psychotic disorder, schizophrenia, major depressive disorder, or generalized anxiety disorder 15. Participation in a clinical research trial that included the receipt of an investigational product or any experimental therapeutic procedure within 12 weeks prior to any study injection; the last date of participation in the trial, not the last date of receipt of investigational product, must be at least 12 weeks prior to Study Visit Day 1 16. Treatment of the target knee with systemic or intra-articular corticosteroids (e.g., methylprednisolone) within 8 weeks prior to Study Visit Day 1 17. Viscosupplementation (e.g., hyaluronic acid) in the target knee within 24 weeks prior to Study Visit Day 1 18. Effusion of the target knee clinically requiring aspiration within 12 weeks prior to Study Visit Day 1 19. Use of electrotherapy, acupuncture, and/or chiropractic treatments for knee OA within 4 weeks prior to Study Visit Day 1 20. Any known active infections, including suspicion of intra-articular infection, hepatitis B or hepatitis C infection, and/or infections that may compromise the immune system such as human immunodeficiency virus (HIV) 21. Subjects taking prescription medications for OA who have not maintained a stable therapeutic regimen for a minimum of 12 weeks prior to Study Visit Day 1 22. Subjects requiring the chronic use (i.e., regular and consistent use for ≥ 12 weeks) of the medications listed below within 12 weeks prior to Study Visit Day 1: 1. Opioids, both oral (e.g., tramadol) or transdermal (e.g., fentanyl patches) formulations 2. Centrally acting analgesics (e.g., duloxetine) 3. Glucocorticoids (e.g., methylprednisolone) administered by any route, with exception of inhaled, intranasal, and ophthalmic solutions 23. Any chronic condition that has not been well controlled or subjects with a chronic condition who have not maintained a stable therapeutic regimen of a prescription therapy for a minimum of 12 weeks prior to Study Visit Day 1. In addition, the following subjects will be excluded: 1. Subjects with a baseline HbA1c \>9 2. Subjects with uncontrolled hypertension in the opinion of the investigator 3. Subjects with symptomatic coronary artery disease in the opinion of the investigator 24. Subjects who have a current or pending disability claim, workers' compensation, or litigation(s) that may compromise response to treatment 25. Subjects who are immediate family members (spouse, parent, child, or sibling; biological or legally adopted) of personnel directly affiliated with the study at the investigative site, or are directly affiliated with the study at the investigative site 26. Subjects employed by Samumed, LLC, or any of its affiliates or development partners (that is, an employee, temporary contract worker, or designee) responsible for the conduct of the study

Design outcomes

Primary

MeasureTime frameDescription
Change From Baseline Osteoarthritis (OA) Pain in the Target KneeBaseline and Week 13Change from baseline OA pain in the target knee as assessed by Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) Numeric Rating Scale (NRS 3.1) pain subscore (WOMAC Pain) at Week 13. The WOMAC is a widely-used, proprietary outcome measurement tool used by health professionals to evaluate the condition of subjects with OA of the knee and hip, including pain (5 questions), stiffness (2 questions), and physical functioning (17 questions) of the joints. Each question is measured on a scale from 0 (lowest pain/lowest stiffness/highest function) to 10 (highest pain/highest stiffness/lowest function). The WOMAC Pain subscore is reported ranging from 0 to 100.

Secondary

MeasureTime frameDescription
Change From Baseline OA Pain in the Target KneeBaseline and Week 26Change from baseline OA pain in the target knee as assessed by Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) Numeric Rating Scale (NRS 3.1) pain subscore (WOMAC Pain) at Week 26. The WOMAC is a widely-used, proprietary outcome measurement tool used by health professionals to evaluate the condition of subjects with OA of the knee and hip, including pain (5 questions), stiffness (2 questions), and physical functioning (17 questions) of the joints. Each question is measured on a scale from 0 (lowest pain/lowest stiffness/highest function) to 10 (highest pain/highest stiffness/lowest function). The WOMAC Pain subscore is reported ranging from 0 to 100.
Change From Baseline OA Function in the Target KneeBaseline and Week 13Change from baseline OA function in the target knee as assessed by Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) Numeric Rating Scale (NRS 3.1) physical functioning subscore (WOMAC Function) at Week 13. The WOMAC is a widely-used, proprietary outcome measurement tool used by health professionals to evaluate the condition of subjects with OA of the knee and hip, including pain (5 questions), stiffness (2 questions), and physical functioning (17 questions) of the joints. Each question is measured on a scale from 0 (lowest pain/lowest stiffness/highest function) to 10 (highest pain/highest stiffness/lowest function). The WOMAC Function subscore is reported ranging from 0 to 100.
Change From Baseline OA Disease Activity as Assessed by the PatientBaseline and Week 13Change from baseline OA disease activity as assessed by the Patient Global Assessment at Week 13. The Patient Global Assessment was completed using a 100 mm visual analog scale (VAS) adapted from the Patient Assessment Form © 1999, American College of Rheumatology. The subject rated how well he/she was doing, considering all the ways in which illness and health conditions may affected him/her. The VAS scale was anchored by Very Well on the left (scored as 0) and Very Poorly on the right (scored as 100). Higher scores indicated poorer disease assessment by the subject.
Change From Baseline in Medial Joint Space Width of Target KneeBaseline and Week 26Change from baseline in medial joint space width as documented by X-ray of the target knee at Week 26.

Other

MeasureTime frameDescription
Change From Baseline OA Pain in the Target KneeBaseline and Week 52Change from baseline OA pain in the target knee as assessed by Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) Numeric Rating Scale (NRS 3.1) pain subscore (WOMAC Pain) at Week 52. The WOMAC is a widely-used, proprietary outcome measurement tool used by health professionals to evaluate the condition of subjects with OA of the knee and hip, including pain (5 questions), stiffness (2 questions), and physical functioning (17 questions) of the joints. Each question is measured on a scale from 0 (lowest pain/lowest stiffness/highest function) to 10 (highest pain/highest stiffness/lowest function). The WOMAC Pain subscore is reported ranging from 0 to 100.
Change From Baseline in Medial Joint Space Width of Target Knee [Unilateral Symptomatic OA]Baseline and Week 52Change from baseline in medial joint space width as documented by X-ray of the target knee at Week 52.
Change From Baseline OA Function in the Target KneeBaseline and Week 52Change from baseline OA function in the target knee as assessed by Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) Numeric Rating Scale (NRS 3.1) physical functioning subscore (WOMAC Function) at Week 52. The WOMAC is a widely-used, proprietary outcome measurement tool used by health professionals to evaluate the condition of subjects with OA of the knee and hip, including pain (5 questions), stiffness (2 questions), and physical functioning (17 questions) of the joints. Each question is measured on a scale from 0 (lowest pain/lowest stiffness/highest function) to 10 (highest pain/highest stiffness/lowest function). The WOMAC Function subscore is reported ranging from 0 to 100.
Change From Baseline in Medial Joint Space Width of Target KneeBaseline and Week 52Change from baseline in medial joint space width as documented by X-ray of the target knee at Week 52.
Change From Baseline OA Pain in the Target Knee [Unilateral Symptomatic OA]Baseline and Week 52Change from baseline OA pain in the target knee as assessed by Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) Numeric Rating Scale (NRS 3.1) pain subscore (WOMAC Pain) at Week 52. The WOMAC is a widely-used, proprietary outcome measurement tool used by health professionals to evaluate the condition of subjects with OA of the knee and hip, including pain (5 questions), stiffness (2 questions), and physical functioning (17 questions) of the joints. Each question is measured on a scale from 0 (lowest pain/lowest stiffness/highest function) to 10 (highest pain/highest stiffness/lowest function). The WOMAC Pain subscore is reported ranging from 0 to 100.
Change From Baseline OA Function in the Target Knee [Unilateral Symptomatic OA]Baseline and Week 52Change from baseline OA function in the target knee as assessed by Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) Numeric Rating Scale (NRS 3.1) physical functioning subscore (WOMAC Function) at Week 52. The WOMAC is a widely-used, proprietary outcome measurement tool used by health professionals to evaluate the condition of subjects with OA of the knee and hip, including pain (5 questions), stiffness (2 questions), and physical functioning (17 questions) of the joints. Each question is measured on a scale from 0 (lowest pain/lowest stiffness/highest function) to 10 (highest pain/highest stiffness/lowest function). The WOMAC Function subscore is reported ranging from 0 to 100.

Countries

United States

Participant flow

Participants by arm

ArmCount
0.03 mg SM04690
Single intra-articular injection of SM04690 0.03 mg in 2 mL injectable suspension
112
0.07 mg SM04690
Single intra-articular injection of SM04690 0.07 mg in 2 mL injectable suspension
117
0.23 mg SM04690
Single intra-articular injection of SM04690 0.23 mg in 2 mL injectable suspension
110
Placebo
Single intra-articular injection of SM04690 0 mg in 2 mL phosphate buffered saline
116
Total455

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003
Overall StudyAdverse Event1341
Overall StudyDiscontinued Before Treatment0012
Overall StudyLost to Follow-up2122
Overall StudyPhysician Decision0001
Overall StudySite Terminated by Sponsor2222
Overall StudySubject Non-Compliance0110
Overall StudyWithdrawal by Subject43511

Baseline characteristics

Characteristic0.03 mg SM046900.07 mg SM046900.23 mg SM04690PlaceboTotal
Age, Continuous59 years
STANDARD_DEVIATION 9
60 years
STANDARD_DEVIATION 8.2
61.3 years
STANDARD_DEVIATION 8.7
60.7 years
STANDARD_DEVIATION 8.9
60.3 years
STANDARD_DEVIATION 8.7
Ethnicity (NIH/OMB)
Hispanic or Latino
20 Participants23 Participants17 Participants21 Participants81 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
92 Participants94 Participants93 Participants95 Participants374 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants0 Participants
Kellgren-Lawrence Grade
Grade 2
38 Participants43 Participants39 Participants41 Participants161 Participants
Kellgren-Lawrence Grade
Grade 3
74 Participants74 Participants70 Participants74 Participants292 Participants
Kellgren-Lawrence Grade
Grade 4
0 Participants0 Participants1 Participants1 Participants2 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants1 Participants0 Participants2 Participants3 Participants
Race (NIH/OMB)
Asian
1 Participants0 Participants2 Participants0 Participants3 Participants
Race (NIH/OMB)
Black or African American
18 Participants14 Participants12 Participants10 Participants54 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants1 Participants1 Participants
Race (NIH/OMB)
Unknown or Not Reported
1 Participants0 Participants0 Participants1 Participants2 Participants
Race (NIH/OMB)
White
92 Participants102 Participants96 Participants102 Participants392 Participants
Sex: Female, Male
Female
68 Participants60 Participants68 Participants72 Participants268 Participants
Sex: Female, Male
Male
44 Participants57 Participants42 Participants44 Participants187 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
EG004
affected / at risk
deaths
Total, all-cause mortality
0 / 1110 / 1140 / 1040 / 1080 / 15
other
Total, other adverse events
25 / 11123 / 11419 / 10418 / 10811 / 15
serious
Total, serious adverse events
5 / 1114 / 1144 / 1043 / 1081 / 15

Outcome results

Primary

Change From Baseline Osteoarthritis (OA) Pain in the Target Knee

Change from baseline OA pain in the target knee as assessed by Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) Numeric Rating Scale (NRS 3.1) pain subscore (WOMAC Pain) at Week 13. The WOMAC is a widely-used, proprietary outcome measurement tool used by health professionals to evaluate the condition of subjects with OA of the knee and hip, including pain (5 questions), stiffness (2 questions), and physical functioning (17 questions) of the joints. Each question is measured on a scale from 0 (lowest pain/lowest stiffness/highest function) to 10 (highest pain/highest stiffness/lowest function). The WOMAC Pain subscore is reported ranging from 0 to 100.

Time frame: Baseline and Week 13

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
0.03 mg SM04690Change From Baseline Osteoarthritis (OA) Pain in the Target Knee-23.3 score on a scaleStandard Error 2.2
0.07 mg SM04690Change From Baseline Osteoarthritis (OA) Pain in the Target Knee-23.5 score on a scaleStandard Error 2.1
0.23 mg SM04690Change From Baseline Osteoarthritis (OA) Pain in the Target Knee-21.3 score on a scaleStandard Error 2.2
PlaceboChange From Baseline Osteoarthritis (OA) Pain in the Target Knee-22.1 score on a scaleStandard Error 2.1
p-value: 0.57595% CI: [-6.57, 3.65]ANCOVA
p-value: 0.64395% CI: [-6.63, 4.09]ANCOVA
p-value: 0.90195% CI: [-5.07, 5.75]ANCOVA
Secondary

Change From Baseline in Medial Joint Space Width of Target Knee

Change from baseline in medial joint space width as documented by X-ray of the target knee at Week 26.

Time frame: Baseline and Week 26

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
0.03 mg SM04690Change From Baseline in Medial Joint Space Width of Target Knee-0.07 mmStandard Error 0.06
0.07 mg SM04690Change From Baseline in Medial Joint Space Width of Target Knee-0.11 mmStandard Error 0.08
0.23 mg SM04690Change From Baseline in Medial Joint Space Width of Target Knee-0.02 mmStandard Error 0.06
PlaceboChange From Baseline in Medial Joint Space Width of Target Knee-0.20 mmStandard Error 0.06
p-value: 0.33495% CI: [-0.1, 0.29]ANCOVA
p-value: 0.12495% CI: [-0.04, 0.3]ANCOVA
p-value: 0.03295% CI: [0.02, 0.36]ANCOVA
Secondary

Change From Baseline OA Disease Activity as Assessed by the Patient

Change from baseline OA disease activity as assessed by the Patient Global Assessment at Week 13. The Patient Global Assessment was completed using a 100 mm visual analog scale (VAS) adapted from the Patient Assessment Form © 1999, American College of Rheumatology. The subject rated how well he/she was doing, considering all the ways in which illness and health conditions may affected him/her. The VAS scale was anchored by Very Well on the left (scored as 0) and Very Poorly on the right (scored as 100). Higher scores indicated poorer disease assessment by the subject.

Time frame: Baseline and Week 13

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
0.03 mg SM04690Change From Baseline OA Disease Activity as Assessed by the Patient-18.1 mmStandard Error 2.3
0.07 mg SM04690Change From Baseline OA Disease Activity as Assessed by the Patient-13.7 mmStandard Error 2.3
0.23 mg SM04690Change From Baseline OA Disease Activity as Assessed by the Patient-14.6 mmStandard Error 2.6
PlaceboChange From Baseline OA Disease Activity as Assessed by the Patient-14.0 mmStandard Error 2.3
p-value: 0.64895% CI: [-3.83, 6.16]ANCOVA
p-value: 0.20995% CI: [-8.02, 1.75]ANCOVA
p-value: 0.91595% CI: [-4.78, 5.33]ANCOVA
Secondary

Change From Baseline OA Disease Activity as Assessed by the Patient

Change from baseline OA disease activity as assessed by the Patient Global Assessment at Week 26. The Patient Global Assessment was completed using a 100 mm visual analog scale (VAS) adapted from the Patient Assessment Form © 1999, American College of Rheumatology. The subject rated how well he/she was doing, considering all the ways in which illness and health conditions may affected him/her. The VAS scale was anchored by Very Well on the left (scored as 0) and Very Poorly on the right (scored as 100). Higher scores indicated poorer disease assessment by the subject.

Time frame: Baseline and Week 26

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
0.03 mg SM04690Change From Baseline OA Disease Activity as Assessed by the Patient-21.3 score on a scaleStandard Error 2.4
0.07 mg SM04690Change From Baseline OA Disease Activity as Assessed by the Patient-17.5 score on a scaleStandard Error 2.3
0.23 mg SM04690Change From Baseline OA Disease Activity as Assessed by the Patient-17.2 score on a scaleStandard Error 2.6
PlaceboChange From Baseline OA Disease Activity as Assessed by the Patient-16.6 score on a scaleStandard Error 2.6
p-value: 0.96995% CI: [-5.16, 5.36]ANCOVA
p-value: 0.17495% CI: [-8.89, 1.61]ANCOVA
p-value: 0.90895% CI: [-4.97, 5.59]ANCOVA
Secondary

Change From Baseline OA Function in the Target Knee

Change from baseline OA function in the target knee as assessed by Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) Numeric Rating Scale (NRS 3.1) physical functioning subscore (WOMAC Function) at Week 26. The WOMAC is a widely-used, proprietary outcome measurement tool used by health professionals to evaluate the condition of subjects with OA of the knee and hip, including pain (5 questions), stiffness (2 questions), and physical functioning (17 questions) of the joints. Each question is measured on a scale from 0 (lowest pain/lowest stiffness/highest function) to 10 (highest pain/highest stiffness/lowest function). The WOMAC Function subscore is reported ranging from 0 to 100.

Time frame: Baseline and Week 26

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
0.03 mg SM04690Change From Baseline OA Function in the Target Knee-25.1 score on a scaleStandard Error 2.2
0.07 mg SM04690Change From Baseline OA Function in the Target Knee-28.6 score on a scaleStandard Error 2
0.23 mg SM04690Change From Baseline OA Function in the Target Knee-24.1 score on a scaleStandard Error 2
PlaceboChange From Baseline OA Function in the Target Knee-25.1 score on a scaleStandard Error 2.1
p-value: 0.29295% CI: [-8.26, 2.49]ANCOVA
p-value: 0.93195% CI: [-5.34, 5.83]ANCOVA
p-value: 0.87895% CI: [-4.92, 5.76]ANCOVA
Secondary

Change From Baseline OA Function in the Target Knee

Change from baseline OA function in the target knee as assessed by Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) Numeric Rating Scale (NRS 3.1) physical functioning subscore (WOMAC Function) at Week 13. The WOMAC is a widely-used, proprietary outcome measurement tool used by health professionals to evaluate the condition of subjects with OA of the knee and hip, including pain (5 questions), stiffness (2 questions), and physical functioning (17 questions) of the joints. Each question is measured on a scale from 0 (lowest pain/lowest stiffness/highest function) to 10 (highest pain/highest stiffness/lowest function). The WOMAC Function subscore is reported ranging from 0 to 100.

Time frame: Baseline and Week 13

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
0.03 mg SM04690Change From Baseline OA Function in the Target Knee-24.5 score on a scaleStandard Error 2.1
0.07 mg SM04690Change From Baseline OA Function in the Target Knee-26.3 score on a scaleStandard Error 2
0.23 mg SM04690Change From Baseline OA Function in the Target Knee-22.6 score on a scaleStandard Error 2.1
PlaceboChange From Baseline OA Function in the Target Knee-22.8 score on a scaleStandard Error 2.1
p-value: 0.28395% CI: [-7.74, 2.26]ANCOVA
p-value: 0.58895% CI: [-6.82, 3.86]ANCOVA
p-value: 0.85395% CI: [-5.76, 4.76]ANCOVA
Secondary

Change From Baseline OA Pain in the Target Knee

Change from baseline OA pain in the target knee as assessed by Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) Numeric Rating Scale (NRS 3.1) pain subscore (WOMAC Pain) at Week 26. The WOMAC is a widely-used, proprietary outcome measurement tool used by health professionals to evaluate the condition of subjects with OA of the knee and hip, including pain (5 questions), stiffness (2 questions), and physical functioning (17 questions) of the joints. Each question is measured on a scale from 0 (lowest pain/lowest stiffness/highest function) to 10 (highest pain/highest stiffness/lowest function). The WOMAC Pain subscore is reported ranging from 0 to 100.

Time frame: Baseline and Week 26

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
0.03 mg SM04690Change From Baseline OA Pain in the Target Knee-24.7 score on a scaleStandard Error 2.3
0.07 mg SM04690Change From Baseline OA Pain in the Target Knee-27.3 score on a scaleStandard Error 2
0.23 mg SM04690Change From Baseline OA Pain in the Target Knee-23.3 score on a scaleStandard Error 2.1
PlaceboChange From Baseline OA Pain in the Target Knee-24.4 score on a scaleStandard Error 2.1
p-value: 0.27195% CI: [-8.31, 2.33]ANCOVA
p-value: 0.89895% CI: [-6.06, 5.32]ANCOVA
p-value: 0.79595% CI: [-4.74, 6.18]ANCOVA
Other Pre-specified

Change From Baseline in Medial Joint Space Width of Target Knee

Change from baseline in medial joint space width as documented by X-ray of the target knee at Week 52.

Time frame: Baseline and Week 52

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
0.03 mg SM04690Change From Baseline in Medial Joint Space Width of Target Knee-0.04 mmStandard Error 0.06
0.07 mg SM04690Change From Baseline in Medial Joint Space Width of Target Knee-0.09 mmStandard Error 0.06
0.23 mg SM04690Change From Baseline in Medial Joint Space Width of Target Knee-0.16 mmStandard Error 0.07
PlaceboChange From Baseline in Medial Joint Space Width of Target Knee-0.14 mmStandard Error 0.06
p-value: 0.52995% CI: [-0.12, 0.24]ANCOVA
p-value: 0.25995% CI: [-0.08, 0.28]ANCOVA
p-value: 0.80795% CI: [-0.21, 0.16]ANCOVA
Other Pre-specified

Change From Baseline in Medial Joint Space Width of Target Knee [Unilateral Symptomatic OA]

Change from baseline in medial joint space width as documented by X-ray of the target knee at Week 52.

Time frame: Baseline and Week 52

Population: Subjects with unilateral symptomatic OA in the ITT Analysis Set.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
0.03 mg SM04690Change From Baseline in Medial Joint Space Width of Target Knee [Unilateral Symptomatic OA]0.03 mmStandard Error 0.1
0.07 mg SM04690Change From Baseline in Medial Joint Space Width of Target Knee [Unilateral Symptomatic OA]0.19 mmStandard Error 0.12
0.23 mg SM04690Change From Baseline in Medial Joint Space Width of Target Knee [Unilateral Symptomatic OA]-0.22 mmStandard Error 0.11
PlaceboChange From Baseline in Medial Joint Space Width of Target Knee [Unilateral Symptomatic OA]-0.21 mmStandard Error 0.12
p-value: 0.02195% CI: [0.06, 0.72]ANCOVA
p-value: 0.13195% CI: [-0.07, 0.55]ANCOVA
p-value: 0.78995% CI: [-0.35, 0.26]ANCOVA
Other Pre-specified

Change From Baseline OA Function in the Target Knee

Change from baseline OA function in the target knee as assessed by Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) Numeric Rating Scale (NRS 3.1) physical functioning subscore (WOMAC Function) at Week 52. The WOMAC is a widely-used, proprietary outcome measurement tool used by health professionals to evaluate the condition of subjects with OA of the knee and hip, including pain (5 questions), stiffness (2 questions), and physical functioning (17 questions) of the joints. Each question is measured on a scale from 0 (lowest pain/lowest stiffness/highest function) to 10 (highest pain/highest stiffness/lowest function). The WOMAC Function subscore is reported ranging from 0 to 100.

Time frame: Baseline and Week 52

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
0.03 mg SM04690Change From Baseline OA Function in the Target Knee-24.1 score on a scaleStandard Error 2.5
0.07 mg SM04690Change From Baseline OA Function in the Target Knee-29.6 score on a scaleStandard Error 2
0.23 mg SM04690Change From Baseline OA Function in the Target Knee-24.9 score on a scaleStandard Error 2.1
PlaceboChange From Baseline OA Function in the Target Knee-25.1 score on a scaleStandard Error 2.3
p-value: 0.17395% CI: [-9.5, 1.71]ANCOVA
p-value: 0.72495% CI: [-5.12, 7.36]ANCOVA
p-value: 0.91495% CI: [-6.17, 5.53]ANCOVA
Other Pre-specified

Change From Baseline OA Function in the Target Knee [Unilateral Symptomatic OA]

Change from baseline OA function in the target knee as assessed by Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) Numeric Rating Scale (NRS 3.1) physical functioning subscore (WOMAC Function) at Week 52. The WOMAC is a widely-used, proprietary outcome measurement tool used by health professionals to evaluate the condition of subjects with OA of the knee and hip, including pain (5 questions), stiffness (2 questions), and physical functioning (17 questions) of the joints. Each question is measured on a scale from 0 (lowest pain/lowest stiffness/highest function) to 10 (highest pain/highest stiffness/lowest function). The WOMAC Function subscore is reported ranging from 0 to 100.

Time frame: Baseline and Week 52

Population: Subjects with unilateral symptomatic OA in the ITT Analysis Set.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
0.03 mg SM04690Change From Baseline OA Function in the Target Knee [Unilateral Symptomatic OA]-29.0 score on a scaleStandard Error 3.9
0.07 mg SM04690Change From Baseline OA Function in the Target Knee [Unilateral Symptomatic OA]-29.9 score on a scaleStandard Error 3.4
0.23 mg SM04690Change From Baseline OA Function in the Target Knee [Unilateral Symptomatic OA]-25.6 score on a scaleStandard Error 3.1
PlaceboChange From Baseline OA Function in the Target Knee [Unilateral Symptomatic OA]-21.5 score on a scaleStandard Error 3.8
p-value: 0.03695% CI: [-19.82, -0.69]ANCOVA
p-value: 0.1795% CI: [-17.18, 3.05]ANCOVA
p-value: 0.17195% CI: [-15.33, 2.74]ANCOVA
Other Pre-specified

Change From Baseline OA Pain in the Target Knee

Change from baseline OA pain in the target knee as assessed by Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) Numeric Rating Scale (NRS 3.1) pain subscore (WOMAC Pain) at Week 52. The WOMAC is a widely-used, proprietary outcome measurement tool used by health professionals to evaluate the condition of subjects with OA of the knee and hip, including pain (5 questions), stiffness (2 questions), and physical functioning (17 questions) of the joints. Each question is measured on a scale from 0 (lowest pain/lowest stiffness/highest function) to 10 (highest pain/highest stiffness/lowest function). The WOMAC Pain subscore is reported ranging from 0 to 100.

Time frame: Baseline and Week 52

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
0.03 mg SM04690Change From Baseline OA Pain in the Target Knee-24.7 score on a scaleStandard Error 2.5
0.07 mg SM04690Change From Baseline OA Pain in the Target Knee-29.0 score on a scaleStandard Error 2.1
0.23 mg SM04690Change From Baseline OA Pain in the Target Knee-25.5 score on a scaleStandard Error 2.1
PlaceboChange From Baseline OA Pain in the Target Knee-26.7 score on a scaleStandard Error 2.2
p-value: 0.40595% CI: [-8, 3.24]ANCOVA
p-value: 0.55295% CI: [-4.37, 8.16]ANCOVA
p-value: 0.76395% CI: [-4.91, 6.68]ANCOVA
Other Pre-specified

Change From Baseline OA Pain in the Target Knee [Unilateral Symptomatic OA]

Change from baseline OA pain in the target knee as assessed by Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) Numeric Rating Scale (NRS 3.1) pain subscore (WOMAC Pain) at Week 52. The WOMAC is a widely-used, proprietary outcome measurement tool used by health professionals to evaluate the condition of subjects with OA of the knee and hip, including pain (5 questions), stiffness (2 questions), and physical functioning (17 questions) of the joints. Each question is measured on a scale from 0 (lowest pain/lowest stiffness/highest function) to 10 (highest pain/highest stiffness/lowest function). The WOMAC Pain subscore is reported ranging from 0 to 100.

Time frame: Baseline and Week 52

Population: Subjects with unilateral symptomatic OA in the ITT Analysis Set.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
0.03 mg SM04690Change From Baseline OA Pain in the Target Knee [Unilateral Symptomatic OA]-28.6 score on a scaleStandard Error 3.5
0.07 mg SM04690Change From Baseline OA Pain in the Target Knee [Unilateral Symptomatic OA]-30.1 score on a scaleStandard Error 3.2
0.23 mg SM04690Change From Baseline OA Pain in the Target Knee [Unilateral Symptomatic OA]-26.6 score on a scaleStandard Error 3.1
PlaceboChange From Baseline OA Pain in the Target Knee [Unilateral Symptomatic OA]-23.8 score on a scaleStandard Error 3.4
p-value: 0.04995% CI: [-17.44, -0.03]ANCOVA
p-value: 0.21195% CI: [-15.49, 3.43]ANCOVA
p-value: 0.25495% CI: [-14.24, 3.78]ANCOVA

Source: ClinicalTrials.gov · Data processed: Mar 2, 2026