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Infliximab

Phase 3

Ankylosing Spondylitis | Small molecule | Immunology |Merck & Company, Inc.|Last Updated: Jul 6, 2026

Success Probability

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials1
Total Enrollment158

FDA Designations

No designations recorded

Clinical trial landscape

Infliximab · 12 trials · 7 indications

Phase 3 9Phase 2 3
NCT00844805Infliximab for Treatment of Axial Spondyloarthritis (P05336 AM1)Ankylosing Spondylitis
COMPLETED158 Analytics
NCT00686686Study to Evaluate the Efficacy of Infliximab Induction Therapy for Patients With Palmoplantar Psoriasis (PPP)(Study P04555)(COMPLETED)Psoriasis
COMPLETED23 Analytics
NCT00732875A Trial of Anti-TNF Chimeric Monoclonal Antibody (cA2) in Korean Patients With Active Rheumatoid Arthritis Despite Methorexate (Extension Part)(Study P05645)(COMPLETED)Arthritis, Rheumatoid
COMPLETED92 Analytics
NCT00687401A Study to Evaluate Infliximab in Subjects With Moderate-to-Severe Psoriasis Not Responding to Standard or Biologic Therapy (Study P04612)Psoriasis
COMPLETED215 Analytics
NCT00367237Remicade Study in Psoriatic Arthritis Patients Of Methotrexate-Naïve Disease (RESPOND) (Study P04422)Arthritis, Psoriatic
COMPLETED115 Analytics
NCT00251641The Effects of Infliximab Versus Methotrexate in the Treatment of Moderate to Severe Psoriasis (Study P04271AM2)(COMPLETED)Psoriasis
COMPLETED868 Analytics
NCT00254982Infliximab in High Need Versus Low Need Psoriasis Patients: The IHELP Study (Study P04320)(COMPLETED)Psoriasis
COMPLETED593 Analytics
NCT00202852A Placebo-Controlled, Double-Blinded, Randomized Trial of Remicade in Korean Patients With Rheumatoid Arthritis Despite Methotrexate (Study P04280)(COMPLETED)Arthritis, Rheumatoid
COMPLETED143 Analytics
NCT00202865Evaluation of Low Dose Infliximab in Ankylosing Spondylitis (Study P04352)Spondylitis, Ankylosing
COMPLETED76 Analytics
PHASE3COMPLETED
Infliximab for Treatment of Axial Spondyloarthritis (P05336 AM1)
Ankylosing SpondylitisUnlock trial analytics
PHASE3COMPLETED
Study to Evaluate the Efficacy of Infliximab Induction Therapy for Patients With Palmoplantar Psoriasis (PPP)(Study P04555)(COMPLETED)
PsoriasisUnlock trial analytics
PHASE3COMPLETED
A Trial of Anti-TNF Chimeric Monoclonal Antibody (cA2) in Korean Patients With Active Rheumatoid Arthritis Despite Methorexate (Extension Part)(Study P05645)(COMPLETED)
Arthritis, RheumatoidUnlock trial analytics
PHASE3COMPLETED
A Study to Evaluate Infliximab in Subjects With Moderate-to-Severe Psoriasis Not Responding to Standard or Biologic Therapy (Study P04612)
PsoriasisUnlock trial analytics
PHASE3COMPLETED
Remicade Study in Psoriatic Arthritis Patients Of Methotrexate-Naïve Disease (RESPOND) (Study P04422)
Arthritis, PsoriaticUnlock trial analytics
PHASE3COMPLETED
The Effects of Infliximab Versus Methotrexate in the Treatment of Moderate to Severe Psoriasis (Study P04271AM2)(COMPLETED)
PsoriasisUnlock trial analytics
PHASE3COMPLETED
Infliximab in High Need Versus Low Need Psoriasis Patients: The IHELP Study (Study P04320)(COMPLETED)
PsoriasisUnlock trial analytics
PHASE3COMPLETED
A Placebo-Controlled, Double-Blinded, Randomized Trial of Remicade in Korean Patients With Rheumatoid Arthritis Despite Methotrexate (Study P04280)(COMPLETED)
Arthritis, RheumatoidUnlock trial analytics
PHASE3COMPLETED
Evaluation of Low Dose Infliximab in Ankylosing Spondylitis (Study P04352)
Spondylitis, AnkylosingUnlock trial analytics

Study Endpoints

Primary Endpoints

Number of Participants Achieving the Assessment in Ankylosing Spondylitis (ASAS) Partial Remission Criteria at Week 28
Week 28

ASAS domains were measured on a visual analog scale (VAS) of 0 to 100 mm (with 0 being the very best situation and 100 being the very worst situation). ASAS partial remission criteria is defined as reaching ≤20 mm in all 4 ASAS domains (i.e., patient global assessment, total back pain, function, and inflammation).

Number of Participants Who Achieve at Least 75% Improvement in Palmoplantar Psoriasis Activity Severity Index (PPPASI) After 3 Infusions.
Baseline and Week 8

The PPPASI score is an overall score of disease signs: extent, scales, erythema, erosions (fissures), induration and pustules. "Extent" is rated on a scale range from 0-6; all other signs are rated on a scale range from 0 to 4 in a target palm and/or sole. Total score range:0-26. A reduction in score is considered an improvement.

Number of Subjects Experiencing Any Adverse Event
throughout entire study (61 +/- 28.9 weeks on average)
Number of Subjects Experiencing Serious Adverse Event
throughout entire study (61 +/- 28.9 weeks on average)

Serious adverse events are defined as death, life-threatening events, persistent or significant disability/incapacity, hospitalization or prolongation of hospitalization and congenital anomalies.

Number of Subjects Experiencing Any Infection
throughout entire study (61 +/- 28.9 weeks on average)
Number of Participants Who Achieve a Greater Than or Equal to 75% Improvement in Psoriasis Area and Severity Index (PASI) Score
10 weeks

PASI 75 response is defined as participants who achieved at least a 75% improvement in PASI score from Baseline to Week 10. The PASI is a system used for assessing and grading the severity of psoriatic lesions and their responses to therapy. The PASI produces a numeric score that can range from 0 to 72 (the higher the number, the worse the disease).

Number of Subjects Achieving ACR20 (at Least 20% Improvement in American College of Rheumatology Criteria From Baseline) at Week 16
between baseline and week 16

\>=20% improvement in swollen and tender joint count AND \>=20% improvement in 3 of the following: visual analog scale (VAS) assessment of pain; subject VAS global assessment of disease activity; evaluator VAS global assessment of disease activity; Health Assessment Questionnaire (HAQ) disability index; C-Reactive Protein (CRP) level.

Psoriasis Area and Severity Index 75 (PASI75) Response at Week 16.
16 weeks

PASI75 response is defined as the proportion of participants who achieved at least a 75% improvement in PASI score from Baseline.

Proportion of Participants Achieving a Greater Than or Equal to 75% Improvement in Psoriasis Area and Severity Index (PASI75) Score
Baseline and Week 22

PASI75 response is defined as participants who achieved at least a 75% improvement in PASI score from Baseline to Week 22. The PASI is a system used for assessing and grading the severity of psoriatic lesions and their responses to therapy. The PASI produces a numeric score that can range from 0 to 72 (the higher the number, the worse the disease).

Achievement of a clinical response (according to the ACR criteria) at the 30-week follow-up visit.
30-week follow-up visit.
The proportion of AS assessment responders ASAS20 (ie, a minimum 20% improvement from Baseline according to the ASAS response criteria) at Week 12.
Week 12
Difference in mean serum CRP measured on days 2, 4 and 14
Days 2, 4 (+/- 1 day), and 14 (+/- 2 days)

Difference in mean serum CRP measured on (summated as AUC) in the active arms (5 mg/kg or 10 mg/kg) versus the placebo arm. CRP assays will be undertaken on blood samples centrally to ensure standardised measurement, and when central measurements of CRP at specific time points are not available for any patient, CRP measures from that patient's specific recruiting centre will be sought.

Change From Baseline in the Volume Transfer Rate From the Blood Plasma to the Enhancing Synovium (Ktrans)
Baseline and week 14

Dynamic Contrast Enhanced (DCE) Magnetic Resonance Imaging (MRI) was performed on one hand at baseline, and then at treatment week 14 to measure the rate constant of transfer of contrast (Ktrans).

Psoriasis Area and Severity Index 75 (PASI75) Response at Week 10
10 weeks

PASI 75 response is defined as participants who achieved at least a 75% improvement in PASI score from Baseline to Week 10. The PASI is a system used for assessing and grading the severity of psoriatic lesions and their response to therapy. The PASI produces a numeric score that can range from 0 to 72 (the higher the number, the worse the disease).

Secondary Endpoints

Number of Participants Maintaining the ASAS Partial Remission Criteria at Week 52 By Treatment Assignment in the Follow-Up Phase
Week 52
Percentage of Participants Maintaining the ASAS Partial Remission Criteria at Week 52 By Treatment Assignment in the Treatment Phase
Week 52
Change From Baseline of Berlin Magnetic Resonance Imaging (MRI) Spine Overall Score at Week 28
Baseline, Week 28
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Infliximab + NaproxenEXPERIMENTALInfliximab administered at a dose of 5 mg/kg intravenously on Day 1 of Weeks 0, 2, 6, 12, 18, and 24, combined with naproxen administered at a daily dose of 1000 mg for 28 weeks during the 28-week treatment phase.
Placebo + NaproxenPLACEBO_COMPARATORPlacebo administered intravenously on Day 1 at Weeks 0, 2, 6, 12, 18, and 24, combined with naproxen administered at a daily dose of 1000 mg for 28 weeks, during the 28-week treatment phase.
Naproxen Only (Follow-Up)EXPERIMENTALFor participants who achieved partial remission during 28-week treatment phase, naproxen was continued at a daily dose of 1000 mg administered orally for an additional 24 weeks in the follow-up phase.
No Treatment (Follow-Up)NO_INTERVENTIONFor participants who achieved partial remission during Treatment phase, no treatment was administered for an additional 24 weeks in the follow-up phase.
Infliximab 5 mg/kgEXPERIMENTALIntravenous infliximab 5 mg/kg given over a 2-hour period at Weeks 0, 2, and 6 and possibly at week 12.
Open Label Infliximab + MethotrexateEXPERIMENTALOpen label Infliximab infusions at weeks 0, 2, and 6 and every 8 weeks + methotrexate (MTX)
Infliximab + methotrexate (IFX + MTX)EXPERIMENTALRemicade (infliximab \[IFX\]) 5 mg/kg infusions at Weeks 0, 2, 6, 14 and oral methotrexate (MTX) 15 mg/week
Methotrexate (MTX)ACTIVE_COMPARATOROral methotrexate (MTX) 15 mg/week
InfliximabEXPERIMENTAL -
MethotrexateACTIVE_COMPARATOR -
Group 1 (high-need)EXPERIMENTALAdult participants with moderate to severe plaque psoriasis who were either not controlled by, or were intolerant to or had contraindications to at least two currently available systemic therapies (eg, photochemotherapy, cyclosporine, methotrexate, oral retinoids, fumaric acid esters, efalizumab, etanercept).
Group II (low-need)EXPERIMENTALAdult participants with moderate to severe plaque psoriasis who had undergone pretreatment with no more than one currently available systemic therapy (eg, photochemotherapy, cyclosporine, methotrexate, oral retinoids, fumaric acid esters, efalizumab, etanercept).
1PLACEBO_COMPARATOR -
2EXPERIMENTAL -
Infusion of 5 mg/kg InfliximabACTIVE_COMPARATORInfliximab (Remicade) to be administered as a one time intravenous infusion in 250 ml (500 ml if patient weighs over 100 kg) 0.9% sodium chloride solution over a period of 2 hours. Dosage calculated at 5 mg of Infliximab, per kg of patient body weight.
Infusion of 10 mg/kg InfliximabACTIVE_COMPARATORInfliximab (Remicade) to be administered as a one time intravenous infusion in 250 ml (500 ml if patient weighs over 100 kg) 0.9% sodium chloride solution over a period of 2 hours. Dosage calculated at 10 mg of Infliximab, per kg of patient body weight.
0.9% Sodium Chloride (Placebo)PLACEBO_COMPARATOR250 ml (500 ml if patient weighs over 100 kg) 0.9% Sodium Chloride to be administered as a one time intravenous infusion over a period of 2 hours.
PlaceboPLACEBO_COMPARATORsaline via intravenous infusion

Interventions

NameTypeDescription
InfliximabDRUG -
PlaceboDRUG -
NaproxenDRUG -
Infliximab + methotrexate (MTX)BIOLOGICALOpen label Infliximab infusions at weeks 0, 2, and 6 and every 8 weeks + methotrexate (MTX)
Infliximab + methotrexate (IFX + MTX)DRUGInfliximab 5 mg/kg infusion at Weeks 0, 2, 6, 14 and oral methotrexate 15 mg/week for 16 weeks. Methotrexate dose can be increased to 20 mg/week at week 6.
Methotrexate (MTX)DRUGOral methotrexate 15 mg/week for 15 weeks. Dose can be increased to 20 mg/week at Week 6.
methotrexateDRUGMethotrexate will be supplied as 2.5 mg tablets. Subjects are to take 15 mg/week orally for the first 6 weeks of the study. Subjects will be advised to take their MTX as a single dose (weekly) on the same day of the week. If subjects randomized to MTX 15 mg/week experience a \<25% reduction in PASI score at Week 6 (Visit 4) as compared with Baseline, their MTX dose will be increased to 20 mg/week. Subjects will be treated for 22 weeks.
MTXDRUGPlacebo infusions at Weeks 0, 2, and 6 and every 8 weeks through Week 22 + MTX; MTX dose \>=12.5 mg/week given orally or parenterally, maximum 20 mg/week
Infusion of 5 mg/kg InfliximabDRUGInfliximab is a prescription drug with marketing authorisation for the treatment of rheumatoid arthritis, Crohn's disease, ulcerative colitis, ankylosing spondylitis, psoriatic arthritis and psoriasis. In the RAPID-I trial infliximab will be used outside the manufacturer's indication for the treatment of AP, and it is classed as an investigational medicinal product (IMP).
Infusion of 10 mg/kg InfliximabDRUGInfliximab is a prescription drug with marketing authorisation for the treatment of rheumatoid arthritis, Crohn's disease, ulcerative colitis, ankylosing spondylitis, psoriatic arthritis and psoriasis. In the RAPID-I trial infliximab will be used outside the manufacturer's indication for the treatment of AP, and it is classed as an investigational medicinal product (IMP).
0.9% Sodium Chloride (Placebo)OTHER250 ml (500 ml if patient weighs over 100 kg) of 0.9% Sodium Chloride
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Eligibility Criteria

Age Range18 Years to 48 Years
SexALL
Healthy VolunteersNo

Inclusion Criteria: Participant must: * be 18 to 48 years of age * have diagnosis of active axial spondyloarthritis, with disease duration of less than or equal to 3 years. * have active disease during trial enrollment * have limited treatment history for axial spondyloarthritis (must meet certain...

Countries:United Kingdom
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