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A Proof-of-concept Study of the Efficacy and Safety of Nipocalimab in Participants With Active Rheumatoid Arthritis

A Multicenter, Randomized, Double-blind, Parallel-group, Placebo-controlled, Proof-of-concept Study Evaluating the Efficacy and Safety of Nipocalimab Administered Intravenously in Participants With Active Rheumatoid Arthritis Despite Standard Therapy

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04991753
Enrollment
53
Registered
2021-08-05
Start date
2021-10-14
Completion date
2022-08-10
Last updated
2025-08-22

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

Conditions

Arthritis, Rheumatoid

Brief summary

The purpose of this study is to evaluate the efficacy and safety of nipocalimab versus placebo in participants with moderate to severe active rheumatoid arthritis (RA).

Detailed description

RA is a chronic autoimmune inflammatory disorder of unknown etiology that occurs in approximately 1 percent (%) of the population. Nipocalimab (also referred to as JNJ-80202135 and M281) is a fully human aglycosylated immunoglobulin (Ig)G1 monoclonal antibody designed to selectively bind, saturate, and block the IgG binding site on the endogenous neonatal fragment crystallizable (Fc) receptor (FcRn). Nipocalimab has a unique mechanism of action whereby it blocks the IgG binding site on endogenous FcRn and is expected to decrease pathogenic IgG antibody concentrations. A significant involvement of pathogenic IgG antibodies has been demonstrated in autoimmune diseases including RA. The primary hypothesis is that treatment with nipocalimab intravenously (IV) every 2 weeks (q2w) is superior to placebo in participants with moderate to severe active rheumatoid arthritis (RA) as assessed by the mean change from baseline in the disease activity index score 28 using C-reactive Protein (DAS28-CRP) at Week 12. The study consists of a Screening Period (less than or equal to \[\<=\] 6 Weeks), Double-blind Treatment Period (12 Weeks), and a Safety Follow-up Period (6 Weeks). Key safety assessments will include adverse events (AEs), serious adverse events (SAEs), adverse events of special interests (AESIs), clinical laboratory safety tests (hematology, chemistry, and lipid profile), vital signs, and physical examination. The total duration of the study is up to 24 weeks.

Interventions

OTHERPlacebo

Placebo infusion will be administered intravenously.

Nipocalimab infusions will be administered intravenously.

Sponsors

Janssen Research & Development, LLC
Lead SponsorINDUSTRY

Study design

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

Eligibility

Sex/Gender
ALL
Age
18 Years to 75 Years
Healthy volunteers
No

Inclusion criteria

* Diagnosis of rheumatoid arthritis (RA) and meeting the 2010 American college of rheumatology (ACR)/European League Against Rheumatism (EULAR) criteria for RA for at least 3 months before screening * Has moderate to severe active RA as defined by persistent disease activity with at least 6 swollen and 6 tender joints out of the 66/68-swollen and tender joint count at the time of screening and at baseline * Is positive for anti-citrullinated protein antibodies (ACPA) and/or rheumatoid factor (RF) at screening * Screening C-reactive protein (CRP) greater than or equal to (\>=) 0.3 milligram per deciliter (mg/dL) by the central laboratory * A woman of childbearing potential must have a negative highly sensitive urine pregnancy test (beta-human chorionic gonadotropin \[beta-hCG\]) at screening and a negative urine (beta-hCG) pregnancy test at Week 0 prior to administration of study intervention

Exclusion criteria

* Has any confirmed or suspected clinical immunodeficiency syndrome not related to treatment of his/her RA or has a family history of congenital or hereditary immunodeficiency unless confirmed absent in the participant * Currently has a malignancy or has a history of malignancy within 3 years before screening (with the exception of localized basal cell carcinoma and/or squamous cell carcinoma skin cancer that has been adequately treated with no evidence of recurrence for at least 12 weeks before the first administration of study intervention or cervical carcinoma in situ that has been treated with no evidence of recurrence for at least 3 months before the first administration of study intervention) * Is (anatomically or functionally) asplenic * Has experienced myocardial infarction (MI), unstable ischemic heart disease, or stroke within 12 weeks of screening * Has other known inflammatory diseases that might confound the evaluations of benefit from nipocalimab therapy, including but not limited to ankylosing spondylitis, psoriatic arthritis, systemic lupus erythematosus, Lyme disease * Is currently taking immunoglobulin (Ig)G fragment crystallizable (Fc)-related protein therapeutics

Design outcomes

Primary

MeasureTime frameDescription
Change From Baseline in Disease Activity Index Score 28 Using C-reactive Protein (DAS28-CRP) at Week 12Baseline (Week 0), Week 12Change from baseline in DAS28-CRP at Week 12 were reported. The DAS28 is a composite index used to assess rheumatoid arthritis disease activity, calculated based on the tender joint count (out of 28 evaluated joints), swollen joint count (out of 28 evaluated joints), Patient's Global Assessment of Disease Activity, and C-reactive protein (CRP; in milligrams per liter \[mg/L\]). The set of 28 joint count was based on evaluation of the shoulder, elbow, wrist, metacarpophalangeal (MCP) MCP1 to MCP5, proximal interphalangeal (PIP) PIP1 to PIP5 joints of both the upper right extremity and the upper left extremity as well as the knee joints of lower right and lower left extremities. Score on the DAS28 ranged from 0 to 10, where higher scores indicated more disease activity. Negative changes from baseline indicated improvement of arthritis.

Secondary

MeasureTime frameDescription
Percentage of Participants Who Achieved American College of Rheumatology (ACR) 50 at Week 12Week 12Percentage of participants who achieved ACR50 at Week 12 were reported. ACR50 response is defined as: \>=50% improvement from baseline in both swollen joint count (66 joints) and tender joint count (68 joints), and \>=50% improvement from baseline in 3 of 5 assessments: patient's assessment of pain using visual analog scale (VAS; 0-100 mm, 0=no pain and 100=worst possible pain), patient's global assessment of disease activity (arthritis, VAS; 0-100 mm, 0=excellent and 100= poor), physician's global assessment of disease activity (VAS; 0-100 mm, 0=no arthritis activity and 100=extremely active arthritis), patient's assessment of physical function as measured by Disability Index of Health Assessment Questionnaire (HAQ-DI; 20-question instrument assessing 8 functional areas; range: 0-3, 0= no difficulty, 3= inability to perform task in that area), and CRP.
Percentage of Participants Who Achieved American College of Rheumatology (ACR) 70 at Week 12Week 12Percentage of participants who achieved ACR70 at Week 12 were reported. ACR70 response is defined as: \>=70% improvement from baseline in both swollen joint count (66 joints) and tender joint count (68 joints), and \>=70% improvement from baseline in 3 of 5 assessments: patient's assessment of pain using visual analog scale (VAS; 0-100 mm, 0=no pain and 100=worst possible pain), patient's global assessment of disease activity (arthritis, VAS; 0-100 mm, 0=excellent and 100= poor), physician's global assessment of disease activity (VAS; 0-100 mm, 0=no arthritis activity and 100=extremely active arthritis), patient's assessment of physical function as measured by Disability Index of Health Assessment Questionnaire (HAQ-DI; 20-question instrument assessing 8 functional areas; range: 0-3, 0= no difficulty, 3= inability to perform task in that area), and CRP.
Percentage of Participants Who Achieved American College of Rheumatology (ACR) 90 at Week 12Week 12Percentage of participants who achieved ACR90 at Week 12 were reported. ACR90 response is defined as: \>=90% improvement from baseline in both swollen joint count (66 joints) and tender joint count (68 joints), and \>=90% improvement from baseline in 3 of 5 assessments: patient's assessment of pain using visual analog scale (VAS; 0-100 mm, 0=no pain and 100=worst possible pain), patient's global assessment of disease activity (arthritis, VAS; 0-100 mm, 0=excellent and 100= poor), physician's global assessment of disease activity (VAS; 0-100 mm, 0=no arthritis activity and 100=extremely active arthritis), patient's assessment of physical function as measured by Disability Index of Health Assessment Questionnaire (HAQ-DI; 20-question instrument assessing 8 functional areas; range: 0-3, 0= no difficulty, 3= inability to perform task in that area), and CRP.
Percentage of Participants Who Achieved Disease Activity Index Score 28 Using C-reactive Protein (DAS28-CRP) Remission at Week 12Week 12Percentage of participants who achieved DAS28-CRP remission at Week 12 were reported. The DAS28 remission is defined as DAS28 -CRP value of less than (\<) 2.6 at Week 12. The DAS28 is a composite index used to assess rheumatoid arthritis disease activity, calculated based on the tender joint count (out of 28 evaluated joints), swollen joint count (out of 28 evaluated joints), Patient's Global Assessment of Disease Activity, and CRP; in mg/L). The set of 28 joint count is based on evaluation of the shoulder, elbow, wrist, MCP1 to MCP5, PIP1 to PIP5 joints of both the upper right extremity and the upper left extremity as well as the knee joints of lower right and lower left extremities. Score on the DAS28 ranged from 0 to 10, where higher scores indicated more disease activity. Negative changes from baseline indicated improvement of arthritis.
Percentage of Participants Who Achieved Disease Activity Index Score 28 Using C-reactive Protein (DAS28-CRP) Low Disease Activity (LDA) European League Against Rheumatism (EULAR) at Week 12Week 12Percentage of participants who achieved DAS28-CRP LDA EULAR at Week 12 were reported. The DAS28 LDA EULAR is defined as DAS28 -CRP value of less than or equal to (\<=) 3.2 at Week 12. The DAS28 is a composite index used to assess rheumatoid arthritis disease activity, calculated based on the tender joint count (out of 28 evaluated joints), swollen joint count (out of 28 evaluated joints), Patient's Global Assessment of Disease Activity, and C-reactive protein (CRP; in mg/L). The set of 28 joint count is based on evaluation of the shoulder, elbow, wrist, MCP1 to MCP5, PIP1 to PIP5 joints of both the upper right extremity and the upper left extremity as well as the knee joints of lower right and lower left extremities. Score on the DAS28 ranged from 0 to 10, where higher scores indicated more disease activity. Negative changes from baseline indicated improvement of arthritis.
Percentage of Participants Who Achieved American College of Rheumatology (ACR) 20 at Week 12Week 12Percentage of participants who achieved ACR20 at Week 12 were reported. ACR20 response is defined as: greater than or equal to (\>=)20% improvement from baseline in both swollen joint count (66 joints) and tender joint count (68 joints), and \>=20% improvement from baseline in 3 of 5 assessments: patient's assessment of pain using visual analog scale (VAS; 0-100 millimeters \[mm\], 0=no pain and 100=worst possible pain), patient's global assessment of disease activity (arthritis, VAS; 0-100 mm, 0=excellent and 100= poor), physician's global assessment of disease activity (VAS; 0-100 mm, 0=no arthritis activity and 100=extremely active arthritis), patient's assessment of physical function as measured by Disability Index of Health Assessment Questionnaire (HAQ-DI; 20-question instrument assessing 8 functional areas; range: 0-3, 0= no difficulty, 3= inability to perform task in that area), and CRP.
Percentage of Participants With Treatment-emergent Adverse Events (TEAEs)From Week 0 up to 8 weeks post last dose at Week 10 (up to Week 18)Percentage of participants with TEAEs were reported. An adverse event (AE) was any untoward medical occurrence in a clinical study participant administered a medicinal (investigational or non-investigational) product. An AE does not necessarily have a causal relationship with the intervention. TEAEs were defined as any AE occurring at or after the initial administration of study intervention through the safety follow-up visit (8 weeks after the last administration of study intervention).
Percentage of Participants With Treatment-emergent Serious Adverse Events (TESAEs)From Week 0 up to 8 weeks post last dose at Week 10 (up to Week 18)Percentage of participants with TESAEs were reported. An AE was any untoward medical occurrence in a clinical study participant administered a medicinal (investigational or non-investigational) product. An AE does not necessarily have a causal relationship with the intervention. A SAE was any untoward medical occurrence at any dose that: resulted in death, was life threatening, required inpatient hospitalization or prolongation of existing hospitalization, resulted in persistent or significant disability/ incapacity, or resulted in congenital anomaly/birth defect. TESAEs were defined as any SAE occurring at or after the initial administration of study intervention through the safety follow-up visit (8 weeks after the last administration of study intervention).
Percentage of Participants With AEs Leading to Discontinuation of Study InterventionFrom Week 0 up to Week 10Percentage of participants with AEs leading to discontinuation of study intervention were reported. An AE was any untoward medical occurrence in a clinical study participant administered a medicinal (investigational or non-investigational) product. An AE does not necessarily have a causal relationship with the intervention.
Percentage of Participants With Treatment-emergent Adverse Events of Special Interest (AESIs)From Week 0 up to 8 weeks post last dose at Week 10 (up to Week 18)Percentage of participants with TEAEs of special interest were reported. An AE was any untoward medical occurrence in a clinical study participant administered a medicinal (investigational or non-investigational) product. An AE does not necessarily have a causal relationship with the intervention. TEAEs were defined as any AE occurring at or after the initial administration of study intervention through the safety follow-up visit (8 weeks after the last administration of study intervention). TEAEs associated with the following situations were considered to be AESIs: (a) Infections that were severe or require IV anti-infective or operative/invasive intervention; (b) Hypoalbuminemia with albumin \<20 grams per liter (g/L) (\<2.0 grams per deciliter \[g/dL\]).
Change From Baseline in Health Assessment Questionnaire - Disability Index (HAQ-DI) Score at Week 12Baseline (Week 0), Week 12Change from baseline in HAQ-DI score at Week 12 were reported. The HAQ-DI is a patient-reported questionnaire that measures the degree of difficulty a person has in accomplishing tasks in 8 functional areas: dressing, arising, eating, walking, hygiene, reaching, gripping, and activities of daily living, over the past week. Responses in each functional area were scored on a scale from 0 (indicating no difficulty) to 3 (inability to perform a task in that area). Overall score was computed as the sum of category scores and divided by the number of categories answered and ranging from 0 to 3, where 0 represents no disability and 3 represents very severe, high-dependency disability.

Countries

Germany, Poland, Spain, United Kingdom, United States

Participant flow

Participants by arm

ArmCount
Group 1: Placebo
Participants received placebo matched to nipocalimab as intravenous (IV) infusion every 2 weeks (q2w) from Week 0 through Week 10 along with standard-of-care background therapy. Participants were followed up for safety up to 8 weeks after administration of last study intervention at Week 10.
20
Group 2: Nipocalimab
Participants received nipocalimab 15 milligrams per kilogram (mg/kg) as IV infusion q2w from Week 0 through Week 10 along with standard-of-care background therapy. Participants were followed up for safety up to 8 weeks after administration of last study intervention at Week 10.
33
Total53

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyWithdrawal by Subject01

Baseline characteristics

CharacteristicGroup 2: NipocalimabTotalGroup 1: Placebo
Age, Continuous56.0 years
STANDARD_DEVIATION 12.3
56.9 years
STANDARD_DEVIATION 11.01
58.3 years
STANDARD_DEVIATION 8.57
Ethnicity (NIH/OMB)
Hispanic or Latino
4 Participants7 Participants3 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
29 Participants45 Participants16 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants1 Participants1 Participants
Race (NIH/OMB)
American Indian or Alaska Native
1 Participants1 Participants0 Participants
Race (NIH/OMB)
Asian
1 Participants2 Participants1 Participants
Race (NIH/OMB)
Black or African American
1 Participants1 Participants0 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants1 Participants1 Participants
Race (NIH/OMB)
White
30 Participants48 Participants18 Participants
Sex: Female, Male
Female
24 Participants36 Participants12 Participants
Sex: Female, Male
Male
9 Participants17 Participants8 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 200 / 33
other
Total, other adverse events
12 / 2020 / 33
serious
Total, serious adverse events
0 / 203 / 33

Outcome results

Primary

Change From Baseline in Disease Activity Index Score 28 Using C-reactive Protein (DAS28-CRP) at Week 12

Change from baseline in DAS28-CRP at Week 12 were reported. The DAS28 is a composite index used to assess rheumatoid arthritis disease activity, calculated based on the tender joint count (out of 28 evaluated joints), swollen joint count (out of 28 evaluated joints), Patient's Global Assessment of Disease Activity, and C-reactive protein (CRP; in milligrams per liter \[mg/L\]). The set of 28 joint count was based on evaluation of the shoulder, elbow, wrist, metacarpophalangeal (MCP) MCP1 to MCP5, proximal interphalangeal (PIP) PIP1 to PIP5 joints of both the upper right extremity and the upper left extremity as well as the knee joints of lower right and lower left extremities. Score on the DAS28 ranged from 0 to 10, where higher scores indicated more disease activity. Negative changes from baseline indicated improvement of arthritis.

Time frame: Baseline (Week 0), Week 12

Population: The full analysis set (FAS) included all randomized participants who received at least 1 dose (partial or complete) of any study intervention.

ArmMeasureValue (LEAST_SQUARES_MEAN)
Group 1: PlaceboChange From Baseline in Disease Activity Index Score 28 Using C-reactive Protein (DAS28-CRP) at Week 12-0.58 Score on a scale
Group 2: NipocalimabChange From Baseline in Disease Activity Index Score 28 Using C-reactive Protein (DAS28-CRP) at Week 12-1.03 Score on a scale
p-value: =0.22495% CI: [-1.17, 0.28]ANCOVA
Secondary

Change From Baseline in Health Assessment Questionnaire - Disability Index (HAQ-DI) Score at Week 12

Change from baseline in HAQ-DI score at Week 12 were reported. The HAQ-DI is a patient-reported questionnaire that measures the degree of difficulty a person has in accomplishing tasks in 8 functional areas: dressing, arising, eating, walking, hygiene, reaching, gripping, and activities of daily living, over the past week. Responses in each functional area were scored on a scale from 0 (indicating no difficulty) to 3 (inability to perform a task in that area). Overall score was computed as the sum of category scores and divided by the number of categories answered and ranging from 0 to 3, where 0 represents no disability and 3 represents very severe, high-dependency disability.

Time frame: Baseline (Week 0), Week 12

Population: The full analysis set (FAS) included all randomized participants who received at least 1 dose (partial or complete) of any study intervention.

ArmMeasureValue (LEAST_SQUARES_MEAN)
Group 1: PlaceboChange From Baseline in Health Assessment Questionnaire - Disability Index (HAQ-DI) Score at Week 12-0.21 Score on a scale
Group 2: NipocalimabChange From Baseline in Health Assessment Questionnaire - Disability Index (HAQ-DI) Score at Week 12-0.42 Score on a scale
Secondary

Percentage of Participants Who Achieved American College of Rheumatology (ACR) 20 at Week 12

Percentage of participants who achieved ACR20 at Week 12 were reported. ACR20 response is defined as: greater than or equal to (\>=)20% improvement from baseline in both swollen joint count (66 joints) and tender joint count (68 joints), and \>=20% improvement from baseline in 3 of 5 assessments: patient's assessment of pain using visual analog scale (VAS; 0-100 millimeters \[mm\], 0=no pain and 100=worst possible pain), patient's global assessment of disease activity (arthritis, VAS; 0-100 mm, 0=excellent and 100= poor), physician's global assessment of disease activity (VAS; 0-100 mm, 0=no arthritis activity and 100=extremely active arthritis), patient's assessment of physical function as measured by Disability Index of Health Assessment Questionnaire (HAQ-DI; 20-question instrument assessing 8 functional areas; range: 0-3, 0= no difficulty, 3= inability to perform task in that area), and CRP.

Time frame: Week 12

Population: The full analysis set (FAS) included all randomized participants who received at least 1 dose (partial or complete) of any study intervention.

ArmMeasureValue (NUMBER)
Group 1: PlaceboPercentage of Participants Who Achieved American College of Rheumatology (ACR) 20 at Week 1220.0 Percentage of Participants
Group 2: NipocalimabPercentage of Participants Who Achieved American College of Rheumatology (ACR) 20 at Week 1245.5 Percentage of Participants
Secondary

Percentage of Participants Who Achieved American College of Rheumatology (ACR) 50 at Week 12

Percentage of participants who achieved ACR50 at Week 12 were reported. ACR50 response is defined as: \>=50% improvement from baseline in both swollen joint count (66 joints) and tender joint count (68 joints), and \>=50% improvement from baseline in 3 of 5 assessments: patient's assessment of pain using visual analog scale (VAS; 0-100 mm, 0=no pain and 100=worst possible pain), patient's global assessment of disease activity (arthritis, VAS; 0-100 mm, 0=excellent and 100= poor), physician's global assessment of disease activity (VAS; 0-100 mm, 0=no arthritis activity and 100=extremely active arthritis), patient's assessment of physical function as measured by Disability Index of Health Assessment Questionnaire (HAQ-DI; 20-question instrument assessing 8 functional areas; range: 0-3, 0= no difficulty, 3= inability to perform task in that area), and CRP.

Time frame: Week 12

Population: The full analysis set (FAS) included all randomized participants who received at least 1 dose (partial or complete) of any study intervention.

ArmMeasureValue (NUMBER)
Group 1: PlaceboPercentage of Participants Who Achieved American College of Rheumatology (ACR) 50 at Week 125.0 Percentage of Participants
Group 2: NipocalimabPercentage of Participants Who Achieved American College of Rheumatology (ACR) 50 at Week 1215.2 Percentage of Participants
Secondary

Percentage of Participants Who Achieved American College of Rheumatology (ACR) 70 at Week 12

Percentage of participants who achieved ACR70 at Week 12 were reported. ACR70 response is defined as: \>=70% improvement from baseline in both swollen joint count (66 joints) and tender joint count (68 joints), and \>=70% improvement from baseline in 3 of 5 assessments: patient's assessment of pain using visual analog scale (VAS; 0-100 mm, 0=no pain and 100=worst possible pain), patient's global assessment of disease activity (arthritis, VAS; 0-100 mm, 0=excellent and 100= poor), physician's global assessment of disease activity (VAS; 0-100 mm, 0=no arthritis activity and 100=extremely active arthritis), patient's assessment of physical function as measured by Disability Index of Health Assessment Questionnaire (HAQ-DI; 20-question instrument assessing 8 functional areas; range: 0-3, 0= no difficulty, 3= inability to perform task in that area), and CRP.

Time frame: Week 12

Population: The full analysis set (FAS) included all randomized participants who received at least 1 dose (partial or complete) of any study intervention.

ArmMeasureValue (NUMBER)
Group 1: PlaceboPercentage of Participants Who Achieved American College of Rheumatology (ACR) 70 at Week 120 Percentage of Participants
Group 2: NipocalimabPercentage of Participants Who Achieved American College of Rheumatology (ACR) 70 at Week 1212.1 Percentage of Participants
Secondary

Percentage of Participants Who Achieved American College of Rheumatology (ACR) 90 at Week 12

Percentage of participants who achieved ACR90 at Week 12 were reported. ACR90 response is defined as: \>=90% improvement from baseline in both swollen joint count (66 joints) and tender joint count (68 joints), and \>=90% improvement from baseline in 3 of 5 assessments: patient's assessment of pain using visual analog scale (VAS; 0-100 mm, 0=no pain and 100=worst possible pain), patient's global assessment of disease activity (arthritis, VAS; 0-100 mm, 0=excellent and 100= poor), physician's global assessment of disease activity (VAS; 0-100 mm, 0=no arthritis activity and 100=extremely active arthritis), patient's assessment of physical function as measured by Disability Index of Health Assessment Questionnaire (HAQ-DI; 20-question instrument assessing 8 functional areas; range: 0-3, 0= no difficulty, 3= inability to perform task in that area), and CRP.

Time frame: Week 12

Population: The full analysis set (FAS) included all randomized participants who received at least 1 dose (partial or complete) of any study intervention.

ArmMeasureValue (NUMBER)
Group 1: PlaceboPercentage of Participants Who Achieved American College of Rheumatology (ACR) 90 at Week 120 Percentage of Participants
Group 2: NipocalimabPercentage of Participants Who Achieved American College of Rheumatology (ACR) 90 at Week 126.1 Percentage of Participants
Secondary

Percentage of Participants Who Achieved Disease Activity Index Score 28 Using C-reactive Protein (DAS28-CRP) Low Disease Activity (LDA) European League Against Rheumatism (EULAR) at Week 12

Percentage of participants who achieved DAS28-CRP LDA EULAR at Week 12 were reported. The DAS28 LDA EULAR is defined as DAS28 -CRP value of less than or equal to (\<=) 3.2 at Week 12. The DAS28 is a composite index used to assess rheumatoid arthritis disease activity, calculated based on the tender joint count (out of 28 evaluated joints), swollen joint count (out of 28 evaluated joints), Patient's Global Assessment of Disease Activity, and C-reactive protein (CRP; in mg/L). The set of 28 joint count is based on evaluation of the shoulder, elbow, wrist, MCP1 to MCP5, PIP1 to PIP5 joints of both the upper right extremity and the upper left extremity as well as the knee joints of lower right and lower left extremities. Score on the DAS28 ranged from 0 to 10, where higher scores indicated more disease activity. Negative changes from baseline indicated improvement of arthritis.

Time frame: Week 12

Population: The full analysis set (FAS) included all randomized participants who received at least 1 dose (partial or complete) of any study intervention.

ArmMeasureValue (NUMBER)
Group 1: PlaceboPercentage of Participants Who Achieved Disease Activity Index Score 28 Using C-reactive Protein (DAS28-CRP) Low Disease Activity (LDA) European League Against Rheumatism (EULAR) at Week 1210.0 Percentage of Participants
Group 2: NipocalimabPercentage of Participants Who Achieved Disease Activity Index Score 28 Using C-reactive Protein (DAS28-CRP) Low Disease Activity (LDA) European League Against Rheumatism (EULAR) at Week 1221.2 Percentage of Participants
Secondary

Percentage of Participants Who Achieved Disease Activity Index Score 28 Using C-reactive Protein (DAS28-CRP) Remission at Week 12

Percentage of participants who achieved DAS28-CRP remission at Week 12 were reported. The DAS28 remission is defined as DAS28 -CRP value of less than (\<) 2.6 at Week 12. The DAS28 is a composite index used to assess rheumatoid arthritis disease activity, calculated based on the tender joint count (out of 28 evaluated joints), swollen joint count (out of 28 evaluated joints), Patient's Global Assessment of Disease Activity, and CRP; in mg/L). The set of 28 joint count is based on evaluation of the shoulder, elbow, wrist, MCP1 to MCP5, PIP1 to PIP5 joints of both the upper right extremity and the upper left extremity as well as the knee joints of lower right and lower left extremities. Score on the DAS28 ranged from 0 to 10, where higher scores indicated more disease activity. Negative changes from baseline indicated improvement of arthritis.

Time frame: Week 12

Population: The full analysis set (FAS) included all randomized participants who received at least 1 dose (partial or complete) of any study intervention.

ArmMeasureValue (NUMBER)
Group 1: PlaceboPercentage of Participants Who Achieved Disease Activity Index Score 28 Using C-reactive Protein (DAS28-CRP) Remission at Week 1210.0 Percentage of Participants
Group 2: NipocalimabPercentage of Participants Who Achieved Disease Activity Index Score 28 Using C-reactive Protein (DAS28-CRP) Remission at Week 1221.2 Percentage of Participants
Secondary

Percentage of Participants With AEs Leading to Discontinuation of Study Intervention

Percentage of participants with AEs leading to discontinuation of study intervention were reported. An AE was any untoward medical occurrence in a clinical study participant administered a medicinal (investigational or non-investigational) product. An AE does not necessarily have a causal relationship with the intervention.

Time frame: From Week 0 up to Week 10

Population: The safety analysis set included all randomized participants who received at least 1 dose (partial or complete) of any study intervention.

ArmMeasureValue (NUMBER)
Group 1: PlaceboPercentage of Participants With AEs Leading to Discontinuation of Study Intervention30.0 Percentage of Participants
Group 2: NipocalimabPercentage of Participants With AEs Leading to Discontinuation of Study Intervention18.2 Percentage of Participants
Secondary

Percentage of Participants With Treatment-emergent Adverse Events of Special Interest (AESIs)

Percentage of participants with TEAEs of special interest were reported. An AE was any untoward medical occurrence in a clinical study participant administered a medicinal (investigational or non-investigational) product. An AE does not necessarily have a causal relationship with the intervention. TEAEs were defined as any AE occurring at or after the initial administration of study intervention through the safety follow-up visit (8 weeks after the last administration of study intervention). TEAEs associated with the following situations were considered to be AESIs: (a) Infections that were severe or require IV anti-infective or operative/invasive intervention; (b) Hypoalbuminemia with albumin \<20 grams per liter (g/L) (\<2.0 grams per deciliter \[g/dL\]).

Time frame: From Week 0 up to 8 weeks post last dose at Week 10 (up to Week 18)

Population: The safety analysis set included all randomized participants who received at least 1 dose (partial or complete) of any study intervention.

ArmMeasureValue (NUMBER)
Group 1: PlaceboPercentage of Participants With Treatment-emergent Adverse Events of Special Interest (AESIs)0 Percentage of Participants
Group 2: NipocalimabPercentage of Participants With Treatment-emergent Adverse Events of Special Interest (AESIs)3.0 Percentage of Participants
Secondary

Percentage of Participants With Treatment-emergent Adverse Events (TEAEs)

Percentage of participants with TEAEs were reported. An adverse event (AE) was any untoward medical occurrence in a clinical study participant administered a medicinal (investigational or non-investigational) product. An AE does not necessarily have a causal relationship with the intervention. TEAEs were defined as any AE occurring at or after the initial administration of study intervention through the safety follow-up visit (8 weeks after the last administration of study intervention).

Time frame: From Week 0 up to 8 weeks post last dose at Week 10 (up to Week 18)

Population: The safety analysis set included all randomized participants who received at least 1 dose (partial or complete) of any study intervention.

ArmMeasureValue (NUMBER)
Group 1: PlaceboPercentage of Participants With Treatment-emergent Adverse Events (TEAEs)60.0 Percentage of Participants
Group 2: NipocalimabPercentage of Participants With Treatment-emergent Adverse Events (TEAEs)81.8 Percentage of Participants
Secondary

Percentage of Participants With Treatment-emergent Serious Adverse Events (TESAEs)

Percentage of participants with TESAEs were reported. An AE was any untoward medical occurrence in a clinical study participant administered a medicinal (investigational or non-investigational) product. An AE does not necessarily have a causal relationship with the intervention. A SAE was any untoward medical occurrence at any dose that: resulted in death, was life threatening, required inpatient hospitalization or prolongation of existing hospitalization, resulted in persistent or significant disability/ incapacity, or resulted in congenital anomaly/birth defect. TESAEs were defined as any SAE occurring at or after the initial administration of study intervention through the safety follow-up visit (8 weeks after the last administration of study intervention).

Time frame: From Week 0 up to 8 weeks post last dose at Week 10 (up to Week 18)

Population: The safety analysis set included all randomized participants who received at least 1 dose (partial or complete) of any study intervention.

ArmMeasureValue (NUMBER)
Group 1: PlaceboPercentage of Participants With Treatment-emergent Serious Adverse Events (TESAEs)0 Percentage of Participants
Group 2: NipocalimabPercentage of Participants With Treatment-emergent Serious Adverse Events (TESAEs)9.1 Percentage of Participants

Source: ClinicalTrials.gov · Data processed: Feb 6, 2026