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Takayasu ArteritisPhase 3NCT04882072

A Study of Ustekinumab in Participants With Takayasu Arteritis (TAK)

A Phase 3 study testing Ustekinumab and Glucorticoid Taper Regimen in people with Takayasu Arteritis, run by Janssen Pharmaceutical K.K. at 27 sites in Japan.

Terminated

Stopped early. The study ended before it was planned to and will not resume.

Official record
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Trial summary

The purpose of this study is to evaluate the efficacy of ustekinumab compared to placebo, in combination with oral glucocorticoid (GC) taper regimen, in participants with relapsing Takayasu Arteritis (TAK). Read more about this study

Who is it for?
Ages 15 to 75 years
Conditions the study is for
Takayasu Arteritis
What is being tested?
Ustekinumab and Glucorticoid Taper Regimen
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
14 participants
Where
27 sitesJapan
Study dates
15 Sep 2021to 25 May 2023
Phase
Phase 3
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 15 to 75 years
  • All sexes
  • No healthy volunteers
  • Child, Adult, Older adult

Who may be able to join

  • Must have developed a relapse of Takayasu Arteritis (TAK) within 12 weeks prior to administration of study intervention and the relapse must have occurred at a dose of at least 7.5 milligrams (mg)/day (prednisolone or equivalent)
  • Must be receiving oral glucorticoid (GC) treatment of greater than or equal to (>=)15 mg/day (prednisolone or equivalent), inclusive for the treatment of relapsing TAK and be on a stable dose for at least 2 weeks prior to the first administration of study intervention
  • If receiving an oral anti-platelet therapy (including but not limited to aspirin, clopidogrel, ticlopidine) or anti-coagulation therapy (including but not limited to warfarin) for treatment of TAK, the dose must have been stable for at least 2 weeks prior to first administration of the study intervention. In terms of warfarin, the dose should be controlled 1-5mg/day to maintain Prothrombin Time and International Normalized Ratio (PT-INR) target range between 2.0-3.0 (if participants are over 70 years old, PT-INR target range should be between 1.6-2.6)
  • Have no history of latent or active Tuberculosis (TB) prior to screening. An exception is made for participants who have a history of latent TB and are currently receiving treatment for latent TB, will initiate treatment for latent TB at least 3 weeks prior to the first administration of the study intervention, or have documentation of having completed appropriate treatment for latent TB within 3 years prior to the first administration of the study intervention. It is the responsibility of the investigator to verify the adequacy of previous antituberculous treatment and provide appropriate documentation
  • If receiving an oral anti-hypertensive therapy for treatment of TAK, the dose must have been stable for at least 2 weeks prior to first administration of the study intervention

Who cannot join

  • Has currently any known severe or uncontrolled TAK complications (example, hypertension not responding to adequate treatment, aortic incompetence with cardiac insufficiency, progressing aortic aneurysm, coronary artery lesions with severe stenosis)
  • Has received immunosuppressant (s) (including but not limited to Methotrexate [MTX], Azathioprine [AZA], Mycophenolate Mofetil [MMF], oral Triamcinolone [TAC], oral Cyclosporine A) within 4 weeks of first study intervention
  • Has had a Bacille Calmette-guerin (BCG) vaccination within 12 months of screening
  • Any major illness/condition or evidence of an unstable clinical condition example, history of liver or renal insufficiency (estimated creatinine clearance below 60 milliliters/minute [mL/min]); significant (cardiac, vascular, pulmonary, gastrointestinal, endocrine, neurologic, hematologic, rheumatologic, psychiatric, or metabolic disturbances), disease of any organ system or active acute or chronic infection/infectious illness that, in the investigator's judgment, will substantially increase the risk to the participant if he or she participates in the study
  • Having a condition that is steroid dependent (example, steroid dependent asthma, chronic obstructive pulmonary disease, et cetera) that is not amenable to tapering oral GC

Trial locations and contacts

27 sites in 1 country.

27 sites in 1 country

Japan27 sites
  • Tokyo Medical and Dental University Hospital

    Bunkyō City, 113 8519

  • Chiba University Hospital

    Chiba, 260 8677

  • Kyushu University Hospital

    Fukuoka, 812 8582

  • Hamamatsu University Hospital

    Hamamatsu, 431 3192

  • Saitama Medical University Hospital

    Iruma-gun, 350-0495

  • Kagawa University Hospital

    Kita Gun, 761 0793

  • Kobe University Hospital

    Kobe, 650 0017

  • Kyoto University Hospital

    Kyoto, 606-8507

  • Matsuyama Red Cross Hospital

    Matsuyama, 790-8524

  • Nagoya City University Hospital

    Nagoya, 467 8602

  • Niigata University Medical And Dental Hospital

    Niigata, 951 8520

  • Okayama University Hospital

    Okayama, 700 8558

  • Kitano Hospital

    Osaka, 530-8480

  • Rinku General Medical Center

    Osaka, 598-8577

  • Kindai University Hospital

    Osaka Sayama Shi, 589 8511

  • Kitasato University Hospital

    Sagamihara, 252-0375

  • Sapporo Medical University Hospital

    Sapporo, 060-8543

  • Hokkaido University Hospital

    Sapporo, 060-8648

  • Tohoku University Hospital

    Sendai, 980 8574

  • Center Hospital of the National Center for Global Health and Medicine

    Shinjuku Ku, 162 8655

  • National Cerebral and Cardiovascular Center

    Suita-Shi, 564-8565

  • Mitsui Memorial Hospital

    Tokyo, 101-8643

  • St. Luke's International Hospital

    Tokyo, 104 8560

  • Fujita Health University Hospital

    Toyoake, 470-1192

  • University of Tsukuba Hospital

    Tsukuba, 305 8576

  • Wakayama Medical University Hospital

    Wakayama, 641 8510

  • Tottori University Hospital

    Yonago, 683-8504

Other trials in Japan

About this study

Official title: A Phase 3, Multicenter, Randomized, Double-blind, Placebo-controlled, Parallel-group Study of Ustekinumab in Participants With Takayasu Arteritis

The purpose of this study is to evaluate the efficacy of ustekinumab compared to placebo, in combination with oral glucocorticoid (GC) taper regimen, in participants with relapsing Takayasu Arteritis (TAK).

Being tested
Ustekinumab, Placebo, Glucorticoid Taper Regimen
Medical subject headings
Takayasu Arteritis

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • UstekinumabDrug

    Also called Stelara®, CNTO1275

    Participants will receive IV infusion and SC injection of ustekinumab.

  • PlaceboOther

    Participants will receive IV infusion and SC injection of matching placebo.

  • Glucorticoid Taper RegimenDrug

    Glucocorticoid will be administered orally.

Study groups in NCT04882072
Study groupRoleWhat they receive
UstekinumabExperimentalDouble-blind (DB) Period: Participants will receive weight-ranged based ustekinumab (6 milligrams/kilogram[mg/kg]) as IV infusion at Week 0 followed by ustekinumab 90mg injection SC 8 weeks after initial IV dose, then every 8 weeks (q8w) thereafter until the end of the DB period with starting the protocol defined oral GC taper regimen from Week 2 visit. Open Label Extension (OLE) period: Participants will receive ustekinumab SC injection at Week OL-0, followed by ustekinumab 90mg SC injection with oral GC taper at investigator's discretion for 52 weeks (Week OL-52) or until 32 weeks from first SC administration after end of DB period whichever is later. Long-term Extension (LTE) Period: Participants who completed OLE period may be eligible to enter LTE and continue to receive ustekinumab 90mg SC injection q8w.
Receives: Drug: Ustekinumab; Drug: Glucorticoid Taper Regimen
PlaceboPlacebo comparatorDB period: Participants will receive placebo intravenous (IV) infusion at Week 0 followed by placebo subcutaneous (SC) injection administration, 8 weeks after the initial IV dose, then q8w thereafter until the end of DB period with starting the protocol defined oral GC taper regimen from Week 2 visit. OLE period: Participants will receive ustekinumab SC at Week OL-0, followed by SC administration of ustekinumab with oral GC taper at investigator's discretion for 52 weeks (Week OL-52) or until 32 weeks from the first SC administration after the end of DB period, whichever is later. LTE Period: Participants who complete their participation in OLE period may be eligible to enter the LTE and continue to receive 90 mg SC ustekinumab q8w.
Receives: Drug: Ustekinumab; Other: Placebo; Drug: Glucorticoid Taper Regimen

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Time to Relapse (ToR) of Takayasu Arteritis (TAK) According to Protocol-defined Criteria Through the End of Double-blind Period

    ToR:time from randomization to 1st relapse through end of double-blind period (EDBP) per protocol-defined criteria with 5 categories:systemic (objective):body temperature >=38.0°C, weight loss >2kg in 4 weeks, arthralgia, swelling \& tenderness =>2 joints; systemic (subjective):malaise, myalgia, headache, dizziness/vertigo at >= grade 2, high inflammation markers (C-reactive protein >=1.0mg/dL, erythrocyte sedimentation rate >=30mm/hr), vascular symptoms:renovascular hypertension: if normal BP <120/80mmHg risen to >=140/90mmHg, or if normal BP >=120/80mmHg, diastolic BP risen by >=20mmHg, new bruits/loss of pulse/difference in systolic BP between left and right by >=10mmHg/tenderness/spontaneous pain in carotid artery/chest/back region, aortic valve incompetence; ischemic symptoms:abdominal pain, seizure, syncope, intermittent claudication, ischemic cardiac pain. Relapse:>=2 categories met criteria.

    Measured: From double-blind Week 0 up to end of double-blind period (up to 71.1 weeks)

Secondary outcomes (20)
  1. Number of Participants With Treatment Emergent Adverse Events (TEAEs)

    An adverse event (AE) was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship with the study intervention. TEAEs were defined as AEs with onset or worsening on or after date of first dose of study intervention through the day of last dose.

    Measured: Double-blind period: Double-blind Week 0 up to end of double-blind treatment period (56.1 weeks); OLE period: OL Week 0 up to end of OLE treatment period (48.1 weeks)

  2. Number of Participants With Treatment-emergent Serious Adverse Events (SAEs)

    SAE is any untoward medical occurrence that at any dose may results in death, is life-threatening, requires inpatient hospitalization or prolongation of existing hospitalization, results in persistent or significant disability/incapacity, is a congenital anomaly/birth defect, is a suspected transmission of any infectious agent via a medicinal product. Treatment-emergent SAEs were defined as SAEs with onset or worsening on or after date of first dose of study intervention through the day of last dose.

    Measured: Double-blind period: Double-blind Week 0 up to end of double-blind treatment period (56.1 weeks); OLE: OL Week 0 up to end of OLE treatment period (48.1 weeks)

  3. Time to Relapse of TAK According to Kerr's Criteria Through the End of Double-blind Period

    ToR was defined from the date of randomization to the judged date of relapse through the EDBP based on Kerr's definition: participants who met 2 or more categories in the following 4 categories were considered as relapse: systemic (objective):body temperature >=38.0°C, weight loss >2kg in 4 weeks, arthralgia, swelling \& tenderness =>2 joints; systemic (subjective):malaise, myalgia, headache, dizziness/vertigo at >= grade 2, high inflammation markers (C-reactive protein >=1.0mg/dL, erythrocyte sedimentation rate >=30mm/hr), vascular symptoms:renovascular hypertension: if normal BP <120/80mmHg risen to >=140/90mmHg, or if normal BP >=120/80mmHg, diastolic BP risen by >=20mmHg, new bruits/loss of pulse/difference in systolic BP between left and right by >=10mmHg/tenderness/spontaneous pain in carotid artery/chest/back region, aortic valve incompetence; ischemic symptoms:abdominal pain, seizure, syncope, intermittent claudication, ischemic cardiac pain.

    Measured: From double-blind Week 0 up to end of double-blind period (up to 71.1 weeks)

  4. Time to Relapse of TAK Based on Clinical Symptoms Through the End of Double-blind Period

    Time (in weeks) to relapse of TAK: time from randomization to the 1st relapse through the EDBP according to protocol-defined criteria with 5 categories: systemic (objective):body temperature >=38.0°C, weight loss >2kg in 4 weeks, arthralgia, swelling and tenderness =>2 joints; systemic (subjective):malaise, myalgia, headache, dizziness/vertigo at >= grade 2, high inflammation markers (C-reactive protein >=1.0mg/dL, erythrocyte sedimentation rate >=30mm/hr), vascular symptoms:renovascular hypertension: if normal BP <120/80mmHg risen to >=140/90mmHg, or if normal BP >=120/80mmHg, diastolic BP risen by >=20mmHg, new bruits/loss of pulse/difference in systolic BP between left and right by >=10mmHg/tenderness/spontaneous pain in carotid artery/chest/back region, aortic valve incompetence; ischemic symptoms:abdominal pain, seizure, syncope, intermittent claudication, ischemic cardiac pain. Time to relapse was calculated by each category independently. Relapse:>=2 categories met criteria.

    Measured: From double-blind Week 0 up to end of double-blind period (up to 71.1 weeks)

  5. Time to Relapse of TAK in Each of the 5 Categories (Within Protocol-defined Criteria) Through the End of Double-blind Period

    Time to relapse of TAK: time from randomization date to the 1st relapse through the EDBP according to protocol-defined criteria with 5 categories: systemic (objective):body temperature >=38.0°C, weight loss >2kg in 4 weeks, arthralgia, swelling and tenderness =>2 joints; systemic (subjective):malaise, myalgia, headache, dizziness/vertigo at >= grade 2, high inflammation markers (C-reactive protein >=1.0mg/dL, erythrocyte sedimentation rate >=30mm/hr), vascular symptoms:renovascular hypertension: if normal BP <120/80mmHg risen to >=140/90mmHg, or if normal BP >=120/80mmHg, diastolic BP risen by >=20mmHg, new bruits/loss of pulse/difference in systolic BP between left and right by >=10mmHg/tenderness/spontaneous pain in carotid artery/chest/back region, aortic valve incompetence; ischemic symptoms:abdominal pain, seizure, syncope, intermittent claudication, ischemic cardiac pain. Time to relapse was calculated by each category independently. Relapse:>=2 categories met criteria.

    Measured: From double-blind Week 0 up to end of double-blind period (up to 71.1 weeks)

  6. Percentage of Participants With Relapse of TAK in Each of the 5 Categories (Within Protocol-defined Criteria) Through the End of Double-blind Period

    Percentage of participants with time to relapse of TAK through the EDBP were reported. Protocol-defined criteria consisted of 5 categories: systemic (objective):body temperature >=38.0°C, weight loss >2kg in 4 weeks, arthralgia, swelling \& tenderness =>2 joints; systemic (subjective):malaise, myalgia, headache, dizziness/vertigo at >= grade 2, high inflammation markers (C-reactive protein >=1.0mg/dL, erythrocyte sedimentation rate >=30mm/hr), vascular symptoms:renovascular hypertension: if normal BP <120/80mmHg risen to >=140/90mmHg, or if normal BP >=120/80mmHg, diastolic BP risen by >=20mmHg, new bruits/loss of pulse/difference in systolic BP between left and right by >=10mmHg/tenderness/spontaneous pain in carotid artery/chest/back region, aortic valve incompetence; ischemic symptoms: abdominal pain, seizure, syncope, intermittent claudication, ischemic cardiac pain.

    Measured: From double-blind Week 0 up to end of double-blind period (up to 71.1 weeks)

  7. Cumulative Oral Glucocorticoid (GC) Dose Through the End of Double-blind Period

    Cumulative oral GC dose (prednisolone or equivalent) through the end of double-blind period were reported. If the participant had relapse, oral GC dose (prednisolone or equivalent) used from randomization date to last observed date prior to the date of relapse were included in the analysis and if the participant had no relapse then oral GC dose used from randomization to last observed date through the end of double-blind period were included in the analysis.

    Measured: From double-blind Week 0 up to end of double-blind period (up to 71.1 weeks)

  8. Change From Baseline in Oral GC Dose Through the End of Double-blind Period

    Change from baseline in oral GC dose through the end of double-blind period were reported. Change from baseline was defined as the change between the GC dose at randomization and the last observed GC dose. If the participant had relapse, oral GC dose (prednisolone or equivalent) used from randomization date to last observed date prior to the date of relapse were included in the analysis and if the participant had no relapse then oral GC dose used from randomization to last observed date through the end of double-blind period were included in the analysis.

    Measured: Baseline (double-blind Week 0) up to end of double-blind period (up to 71.1 weeks)

  9. Number of Participants Achieving GC Dose of 5 mg/Day or Less Through the End of Double-blind Period

    Number of participants who achieved GC dose of 5 mg/day or less through the end of double-blind period were reported.

    Measured: From double-blind Week 0 up to end of double-blind period (up to 71.1 weeks)

  10. Change From Baseline in Imaging Evaluation of Vessel Involvement (Average Percentage of Dilation) at the End of Double-blind Period

    Change from baseline in average percentage of dilation for abnormal vessel segments through the end of double-blind period was reported. Assessment was performed using computed tomography angiography (CTA) or magnetic resonance angiography (MRA). For a participant, the time point at which the 1st relapse developed or discontinuation from double-blind period was considered as the end of double-blind period.

    Measured: Baseline (double-blind Week 0) and double-blind relapse (up to 14 weeks for Placebo arm; up to 48 weeks for ustekinumab arm)

  11. Change From Baseline in Imaging Evaluation of Vessel Involvement (Average Percentage of Stenosis) Through the End of Double-blind Period

    Change from baseline in average percentage of stenosis for abnormal vessel segments through the end of double-blind period was reported. Assessment was performed using CTA or MRA. For a participant, the time point at which the 1st relapse developed or discontinuation from double-blind period was considered as the end of double-blind period.

    Measured: Baseline (double-blind Week 0), Week 24, Week 48, and double-blind relapse (up to 14 weeks for Placebo arm; up to 48 weeks for ustekinumab arm)

  12. Change From Baseline in Imaging Evaluation of Average Arterial Wall Thickness Through the End of Double-blind Period

    Change from baseline in average wall thickness for abnormal segments through the end of double-blind period was reported. Assessment was performed using CTA or MRA. For a participant, the time point at which the 1st relapse developed or discontinuation from double-blind period was considered as the end of double-blind period.

    Measured: Baseline (double-blind Week 0), Week 24, Week 48, and double-blind relapse (up to 14 weeks for Placebo arm; up to 48 weeks for ustekinumab arm)

  13. Imaging Evaluation: Number of Participants With Mural Contrast Enhancement Through the End of Double-blind Period

    Number of participants with mural contrast enhancement through the end of double-blind period were reported. The mural contrast enhancement were assessed for imaging evaluation using CTA or MRA. For a participant, the time point at which the 1st relapse developed or discontinuation from double-blind period was considered as the end of double-blind period.

    Measured: Baseline (double-blind Week 0), Week 24, Week 48, and double-blind relapse (up to 14 weeks for Placebo arm; up to 48 weeks for ustekinumab arm)

  14. Change From Baseline in C-reactive Protein (CRP) Through the End of Double-blind Period

    Change from baseline in CRP (as inflammatory marker) through the end of double-blind period were reported. For a participant, the time point at which the 1st relapse developed or discontinuation from double-blind period was considered as the end of double-blind period.

    Measured: Baseline (double-blind Week 0), Weeks 2, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56, and double-blind relapse (up to 14 weeks for Placebo arm; up to 48 weeks for ustekinumab arm)

  15. Change From Baseline in Erythrocyte Sedimentation Rate (ESR) Through the End of Double-blind Period

    Change from baseline in ESR (as inflammatory marker) through the end of double-blind period were reported. For a participant, the time point at which the 1st relapse developed or discontinuation from double-blind period was considered as the end of double-blind period.

    Measured: Baseline (double-blind Week 0), Weeks 2, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56, and double-blind relapse (up to 14 weeks for Placebo arm; up to 48 weeks for ustekinumab arm)

  16. Serum Concentrations of Ustekinumab in Participants Receiving Ustekinumab During Double-blind Phase

    Serum concentrations of ustekinumab was reported during double-blind Phase. For a participant, the time point at which the 1st relapse developed or discontinuation from double-blind period was considered as the end of double-blind period.

    Measured: Pre-dose (double-blind Week 0), Post-dose: Week 0, Weeks 2, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56, 60, double-blind relapse (up to 48 weeks)

  17. Serum Concentrations of Ustekinumab in Participants Receiving Ustekinumab During Open-label Extension Phase

    Serum concentrations of ustekinumab was reported during OLE Phase.

    Measured: Pre-dose (OL Week 0), Post-dose: OL Week 0, OL Weeks 8, 16, 24, 32, 40, 48, 52, and 56

  18. Number of Participants With Positive Anti-ustekinumab Antibodies Through End of Double-blind Period

    Number of participants with positive anti-ustekinumab antibodies were reported.

    Measured: From double-blind Week 0 up to end of double-blind period (up to 71.1 weeks)

  19. Number of Participants With Positive Anti-ustekinumab Antibodies Through End of OLE Period

    Number of participants with positive anti-ustekinumab antibodies were reported.

    Measured: From OL Week 0 up to end of OLE period (up to 63.1 weeks)

  20. Number of Participants With TEAEs by System Organ Class (SOC) With a Frequency Threshold of 5 Percent (%) or More

    An AE is any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship with the study intervention. TEAEs are defined as AEs with onset or worsening on or after date of first dose of study intervention through the day of last dose. If same participant had more than one AE within the same SOC, that participant is counted only once in the below data table.

    Measured: Double-blind period: double-blind Week 0 up to end of double-blind treatment period (56.1 weeks); OLE period: OL Week 0 up to end of OLE treatment period (48.1 weeks)

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted11 May 2021
  2. Study start15 Sep 2021
  3. Primary completion25 May 2023
  4. Study completion25 May 2023

Why it stopped: Due to difficulties in enrollment and ongoing feasibility issues

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Double blind
Who is masked
Participant, Investigator
Enrolment
14 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT04882072
Sponsor's protocol ID
CR108981
Other IDs
CNTO1275TAT3001
Status last verified
Apr 2025
First submitted
10 May 2021
Last updated
29 Apr 2025
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
Yes: The data sharing policy of the Janssen Pharmaceutical Companies of Johnson \& Johnson is available at www.janssen.com/clinical-trials/transparency. As noted on this site, requests for access to the study data can be submitted through Yale Open Data Access (YODA) Project site at yoda.yale.edu

Publications

  • Yoshifuji H, Ishii T, Ohashi H, Yoshizawa K, Mihoya M, Nishikawa K, Nakaoka Y. Phase 3, multicentre, randomized, double-blind, placebo-controlled, parallel-group study of ustekinumab in patients with Takayasu arteritis. Rheumatol Adv Pract. 2025 Feb 3;9(2):rkaf013. doi: 10.1093/rap/rkaf013. eCollection 2025.

    PubMed 40104212

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing Ustekinumab and Glucorticoid Taper Regimen in people with Takayasu Arteritis, run by Janssen Pharmaceutical K.K. at 27 sites in Japan.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 5 inclusion and 5 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: stopped early, as of the sponsor's last update on 29 Apr 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 27 sites in Japan. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 2 Dec 2024). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Time to Relapse (ToR) of Takayasu Arteritis (TAK) According to Protocol-defined Criteria Through the End of Double-blind Period (time frame: From double-blind Week 0 up to end of double-blind period (up to 71.1 weeks)). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT04882072, which also lists 1 linked publication.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 29 Apr 2025.

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