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Lupus NephritisPhase 3IRISNCT05138133

Phase 3 Study of Anifrolumab in Adult Patients With Active Proliferative Lupus Nephritis

A Phase 3 study testing Anifrolumab in people with Lupus Nephritis, run by AstraZeneca at 164 sites in 24 countries.

Active, not recruiting

Under way, not looking for participants. Everyone needed has enrolled. The study is still running.

Official record
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Trial summary

The purpose of this study is to evaluate the efficacy and safety of IV antifrolumab in adult patients with Active Proliferative Lupus Nephritis Read more about this study

Who is it for?
Ages 18 to 70 years
Conditions the study is for
Lupus Nephritis
What is being tested?
Anifrolumab
Type of treatment
Injection or infusion
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
363 participants
Where
164 sitesin 24 countries
Study dates
15 Feb 2022to 4 Oct 2028
Phase
Phase 3
Are there results?
Not yet: the study is under way

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 18 to 70 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Active proliferative LN Class III or IV either with or without the presence of Class V according to the 2003 ISN/RPS classification
  • Renal biopsy obtained within 6 months prior to signing the ICF or during Screening Period.
  • Urine protein to creatinine ratio > 1 mg/mg (113.17 mg/mmol)
  • eGFR ≥ 35 mL/min/1.73 m2 (as calculated by the Chronic Kidney Disease Epidemiology Collaboration formula).
  • Fulfills updated 2019 EULAR/ACR SLE classification criteria.
  • No signs of symptoms of active TB prior to or during screening or no treatment for latent TB

Who cannot join

  • A diagnosis of pure Class V LN based on the renal biopsy obtained within 6 months prior to signing the ICF or during Screening.
  • Known history of a primary immunodeficiency, splenectomy, or any underlying condition that predisposes the participant to infection, or a positive result for HIV confirmed by the central lab at Screening - an HIV test must be performed during Screening, and the result should be available prior to Week 0 (Day 1).
  • Evidence of hepatitis C or active hepatitis B.
  • Any history of cancer except sucessfully cured skin squamos or basal skin carcinoma and cervical cancer in situ.
  • Receipt of the following for the current LN flare (ie, since the qualifying renal biopsy): IV cyclophosphamide > 2 pulses of high-dose (≥ 0.5 g/m2) or > 4 doses of low dose (500 mg every 2 weeks) or Average MMF > 2.5 g/day (or > 1800 mg/day of enteric coated mycophenolate sodium) for more than 8 weeks or Tacrolimus > 4 mg/day for more than 8 weeks; Cyclosporine for more than 8 weeks or during last 8 weeks prior to signing the ICF; Voclosporin for more than 8 weeks or during last 8 weeks prior to signing the ICF; Belimumab for more than 12 weeks or during last 12 weeks prior the ICF.
  • Previous receipt of >◦2 investigation treatments (other than anifrolumab) for LN or SLE since time of diagnosis and through the ICF.
  • Known intolerance to ≤ 1.0 g/day of MMF.
  • Any history of severe COVID-19 infection.

Trial locations and contacts

164 sites in 24 countries.

164 sites in 24 countries

China23 sites
  • Research Site

    Beijing, 100034

  • Research Site

    Beijing, 100044

  • Research Site

    Bengbu, 233004

  • Research Site

    Chengdu, 610072

  • Research Site

    Guangzhou, 510530

  • Research Site

    Haikou, 570311

  • Research Site

    Hangzhou, 310009

  • Research Site

    Jinan, 250021

  • Research Site

    Jining, 272011

  • Research Site

    Nanchang, 330006

  • Research Site

    Nanjing, 210009

  • Research Site

    Nanjing, 210029

  • Research Site

    Nanning, 530021

  • Research Site

    Shanghai, 200025

  • Research Site

    Shanghai, 200040

  • Research Site

    Shengyang, 110004

  • Research Site

    Shenzhen, 518036

  • Research Site

    Shijiazhuang, 050001

  • Research Site

    Tianjin, 300201

  • Research Site

    Wuhan, 430060

  • Research Site

    Wuxi, 214023

  • Research Site

    Xi'an, 710061

  • Research Site

    Zhengzhou, 450000

Other trials in China

United States16 sites
  • Research Site

    Atlanta, Georgia, 30308

  • Research Site

    Colleyville, Texas, 76034

  • Research Site

    Edinburg, Texas, 78539

  • Research Site

    El Paso, Texas, 79902

  • Research Site

    Glendale, Arizona, 85306

  • Research Site

    Houston, Texas, 77054

  • Research Site

    La Palma, California, 90623

  • Research Site

    Los Angeles, California, 90095

  • Research Site

    Louisville, Kentucky, 40202

  • Research Site

    Manhasset, New York, 11030

  • Research Site

    Middleburg Heights, Ohio, 44130

  • Research Site

    New York, New York, 10016

  • Research Site

    Plantation, Florida, 33324

  • Research Site

    Summit, New Jersey, 07901

  • Research Site

    Upland, California, 91786

  • Research Site

    Winston-Salem, North Carolina, 27157

Other trials in United States

Japan16 sites
  • Research Site

    Bunkyō City, 113-8655

  • Research Site

    Chiba, 260-8712

  • Research Site

    Hiroshima, 734-8551

  • Research Site

    Kita-gun, 761-0793

  • Research Site

    Kitakyushu-shi, 807-8555

  • Research Site

    Matsumoto-shi, 390-8621

  • Research Site

    Nagasaki, 852-8501

  • Research Site

    Okayama, 700-8558

  • Research Site

    Ono, 675-1392

  • Research Site

    Sagamihara-shi, 252-0375

  • Research Site

    Sendai, 980-0872

  • Research Site

    Shinagawa-ku, 142-0054

  • Research Site

    Shinjuku-ku, 160-8582

  • Research Site

    Shinjuku-ku, 162-8655

  • Research Site

    Shinjuku-ku, 162-8666

  • Research Site

    Toyoake-shi, 470-1192

Other trials in Japan

Brazil11 sites
  • Research Site

    Belo Horizonte, 30130 100

  • Research Site

    Campinas, 13087-567

  • Research Site

    Cuiabá, 78020-500

  • Research Site

    Maringá, 87060-040

  • Research Site

    Porto Alegre, 90035-903

  • Research Site

    Recife, 50740-465

  • Research Site

    Salvador, 40150-150

  • Research Site

    São José do Rio Preto, 15090-000

  • Research Site

    São Paulo, 04014-002

  • Research Site

    São Paulo, 04036-002

  • Research Site

    São Paulo, 05403-000

Other trials in Brazil

India11 sites
  • Research Site

    Ahmedabad, 380005

  • Research Site

    Ahmedabad, 382421

  • Research Site

    Dehradun, 248001

  • Research Site

    Delhi, 110029

  • Research Site

    Hyderabad, 500082

  • Research Site

    Kolkata, 700020

  • Research Site

    Nadiād, 387001

  • Research Site

    Pune, 411001

  • Research Site

    Secunderabad, 500003

  • Research Site

    Vijayawada, 522002

  • Research Site

    Visakapatnam, 530013

Other trials in India

Turkey (Türkiye)9 sites
  • Research Site

    Adapazarı, 54290

  • Research Site

    Ankara, 06100

  • Research Site

    Ankara

  • Research Site

    Istanbul, 34865

  • Research Site

    Istanbul

  • Research Site

    Izmir, 35965

  • Research Site

    Kahramanmaraş, 46100

  • Research Site

    Kayseri, 38039

  • Research Site

    Kocaeli, 41380

Other trials in Turkey (Türkiye)

France7 sites
  • Research Site

    Aurillac, 15002

  • Research Site

    Bordeaux, 33076

  • Research Site

    Marseille, 13005

  • Research Site

    Paris, 75013

  • Research Site

    Paris, 75018

  • Research Site

    Strasbourg, 67098

  • Research Site

    Toulouse, 31059

Other trials in France

Taiwan7 sites
  • Research Site

    Kaohsiung City, 833

  • Research Site

    New Taipei City, 220

  • Research Site

    Taichung, 40447

  • Research Site

    Taichung, 40705

  • Research Site

    Taipei, 11217

  • Research Site

    Taipei, 114

  • Research Site

    Taipei, 235

Other trials in Taiwan

Germany6 sites
  • Research Site

    Cologne, 50937

  • Research Site

    Dresden, 1307

  • Research Site

    Hanover, 30625

  • Research Site

    Heidelberg, 69120

  • Research Site

    Kirchheim, 73230

  • Research Site

    Mainz Am Rhein, 55131

Other trials in Germany

Malaysia6 sites
  • Research Site

    Batu Caves, 68100

  • Research Site

    Ipoh, 30450

  • Research Site

    Kajang, 43000

  • Research Site

    Kuala Lumpur, 59100

  • Research Site

    Kuantan, 25100

  • Research Site

    Taiping, 34000

Other trials in Malaysia

Mexico6 sites
  • Research Site

    Chihuahua City, 31000

  • Research Site

    Guadalajara, 44160

  • Research Site

    Guadalajara, 44650

  • Research Site

    México, 06726

  • Research Site

    México, 14080

  • Research Site

    San Luis Potosí City, 78290

Other trials in Mexico

Peru6 sites
  • Research Site

    Lima, 15023

  • Research Site

    Lima, 15046

  • Research Site

    Lima, 15102

  • Research Site

    Lima, L34

  • Research Site

    Lima, LIMA 27

  • Research Site

    Lima, LIMA 29

Other trials in Peru

Poland6 sites
  • Research Site

    Lodz, 92-213

  • Research Site

    Olsztyn, 10-561

  • Research Site

    Opole, 46-020

  • Research Site

    Poznan, 60-355

  • Research Site

    Poznan, 61-545

  • Research Site

    Rzeszów, 35-301

Other trials in Poland

Argentina5 sites
  • Research Site

    CABA, C1425EOE

  • Research Site

    Ciudad de Buenos Aires, C1015ABO

  • Research Site

    La Plata, 1900

  • Research Site

    Rosario, S2000PBJ

  • Research Site

    San Juan, 5400

Other trials in Argentina

Italy5 sites
  • Research Site

    Ancona, 60126

  • Research Site

    Cona, 44124

  • Research Site

    Eboli, 84025

  • Research Site

    Padova, 35128

  • Research Site

    Roma, 00161

Other trials in Italy

Thailand5 sites
  • Research Site

    Bangkok, 10220

  • Research Site

    Bangkok, 10330

  • Research Site

    Hat Yai, 90110

  • Research Site

    Muang, 50200

  • Research Site

    Ratchathewi, 10400

Other trials in Thailand

Vietnam5 sites
  • Research Site

    Hà Nội, 100000

  • Research Site

    Hanoi, 100000

  • Research Site

    Hanoi, 10000

  • Research Site

    Ho Chi Minh City, 700000

  • Research Site

    Hochiminh, 70000

Other trials in Vietnam

Belgium3 sites
  • Research Site

    Brussels, 1200

  • Research Site

    Leuven, 3000

  • Research Site

    Liège, 4000

Other trials in Belgium

Colombia3 sites
  • Research Site

    Barranquilla, 080020

  • Research Site

    Medellín, 050010

  • Research Site

    Medellín, 050025

Other trials in Colombia

Hungary3 sites
  • Research Site

    Budapest, 1085

  • Research Site

    Budapest, 1097

  • Research Site

    Debrecen, 4032

Other trials in Hungary

Bulgaria2 sites
  • Research Site

    Plovdiv, 4002

  • Research Site

    Sofia, 1431

Other trials in Bulgaria

Netherlands1 site
  • Research Site

    Amsterdam, 1105 AZ

Other trials in Netherlands

Puerto Rico1 site
  • Research Site

    Caguas, 00725

Other trials in Puerto Rico

Russia1 site
  • Research Site

    Moscow, 115522

Other trials in Russia

About this study

Official title: A Multicentre Randomized Double-Blind Placebo Controlled Phase 3 Study to Evaluate the Efficacy and Safety of Anifrolumab in Adult Patients With Active Proliferative Lupus Nephritis

The purpose of this study is to evaluate the efficacy and safety of IV antifrolumab in adult patients with Active Proliferative Lupus Nephritis

Read the detailed description

This Phase 3, multicenter, multinational, randomized, double-blind, placebo-controlled study with OLE is to evaluate the efficacy and safety of anifrolumab versus placebo as added to SOC (MMF and glucocorticoids) in adults with active proliferative Class III or Class IV LN (both with or without concomitant Class V). The total study duration may be up to approximately 142 weeks, including screening and follow-up. Double-blind period will be 76 weeks. Participants who complete double-blind treatment period may enter open-label extension to receive anifrolumab for up 52 weeks. Approximately 360 of the enrolled participants will be randomly assigned to study intervention (anifrolumab or placebo) at a ratio of 1:1 during double-blind treatment period.

Conditions
Lupus Nephritis
Being tested
Anifrolumab, Placebo
Keywords
Lupus Nephritis, anifrolumab, Systemic Lupus Erythematosus, intravenous
Medical subject headings
Lupus Nephritis, Lupus Erythematosus, Systemic

What participants receive

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

  • AnifrolumabDrug

    Also called Medi-546

    Anifrolumab intravenous infusion (IV)

  • PlaceboDrug

    Placebo intravenous infusion (IV)

Study groups in NCT05138133
Study groupRoleWhat they receive
AnifrolumabExperimentalSolution for intravenous infusion
Receives: Drug: Anifrolumab
PlaceboPlacebo comparatorSolution for intravenous infusion
Receives: Drug: Placebo

What is being measured

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

  1. Difference in proportion of participants with CRR (Complete Renal Response) in anifrolumab group compared with placebo group

    CRR is defined as:

    • UPCR ≤ 0.5 mg/mg
    • eGFR ≥ 60 mL/min/1.73 m2 or no decrease from baseline of ≥ 20%

    Measured: Week 52

Secondary outcomes (14)
  1. Difference in proportion of participants achieving sustained OCS reduction in anifrolumab group compared with placebo group

    Sustained OCS reduction

    Measured: from Week 24 through Week 52

  2. HR of achieving sustained CRR in anifrolumab compared with placebo group

    The endpoint for deriving the summary measure is time to sustained CRR, defined as time to achieving CRR that is sustained from that time point through week 52

    Measured: baseline through Week 52

  3. Difference in the mean standardized AUC for UPCR between anifrolumab and placebo participants

    Proteinuria as measured by the cumulative UPCR

    Measured: baseline through Week 52

  4. Difference in proportion of participants with CRR in anifrolumab group compared with placebo group

    CRR at week 24

    Measured: Week 24

  5. HR to summarize the difference in the risk of hazard of renal-related event or death at any given time between anifrolumab and placebo participants

    Onset of renal-related event or death through Week 52

    Measured: Through Week 52

  6. HR to summarize the difference in the risk of hazard of renal-related event or death at any given time between anifrolumab and placebo participants

    Onset of renal-related event or death through Week 76

    Measured: Through Week 76

  7. Difference between anifrolumab and placebo in proportions of participants who achieve aCRR

    aCRR (alternative complete renal response) defined as;

    • UPCR ≤ 0.5 mg/mg
    • eGFR ≥ 90 mL/min/1.73 m2 or no decrease from baseline of ≥ 10%

    Measured: Week 52

  8. Difference between anifrolumab and placebo in proportions of participants who achieve CRR with sustained OCS reduction

    CRR at Week 52 with Sustained OCS Reduction

    Measured: Week 52

  9. HR of achieving sustained CRR in anifrolumab compared to placebo group

    Time to sustained CRR through the time frame period

    Measured: Through week 76

  10. HR of achieving 50% reduction in UPCR in anifrolumab compared to placebo group

    The endpoint for deriving the summary measure is time from the first dose of study intervention to achieving 50% reduction in UPCR

    Measured: Through Week 52

  11. Difference in mean UPCR between the anifrolumab and placebo group

    Proteinuria as measured by UPCR

    Measured: Week 52

  12. Difference in proportion of participants achieving PRR (Partial Renal Response) in anifrolumab group compared with placebo group

    PRR defined as:

    UPCR <1.0 mg/mg (for participants with baseline UPCR ≤3 mg/mg) or >50% improvement and ≤3 mg/mg (for participants with baseline UPCR >3 mg/mg) eGFR

    ≥ 60 mL/min/1.73 m2 or no confirmed decrease of ≥20% from baseline

    Measured: Week 52

  13. Difference in change from baseline in extra-renal SLEDAI-2K total score

    The extra-renal SLEDAI-2K score is obtained by summing the SLEDAI-2K items without including the items within the renal system organ

    Measured: Through Week 76

  14. Difference in mean change from baseline in domains and component scores of Short Form-36 Version 2 (SF-36v2) and Functional Assessment of Chronic Illness Therapy-Fatigue (FACIT-fatigue) total score

    To evaluate patient-reported HRQOL and health status

    Measured: Week 52

Timeline

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

  1. First posted30 Nov 2021
  2. Study start15 Feb 2022
  3. Primary completion23 Feb 2027 (estimated)
  4. Study completion4 Oct 2028 (estimated)

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
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
363 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05138133
Sponsor's protocol ID
D3466C00001
Other IDs
2021-002862-42
Acronym
IRIS
Status last verified
Oct 2026
First submitted
17 Nov 2021
Last updated
28 Oct 2026
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
Yes: Qualified researchers can request access to anonymized individual patient-level data from AstraZeneca group of companies sponsored clinical trials via the request portal. All request will be evaluated as per the AZ disclosure commitment: https://astrazenecagrouptrials.pharmacm.com/ST/Submission/Disclosure. Yes, indicates that AZ are accepting requests for IPD, but this does not mean that all requests will be shared.

Publications

  • Almquist J, Chia YL, Tummala R, Bertagnolli L, Jayne D, Tang W, Lindholm C. Anifrolumab Dose Regimen Selection for a Phase 3 Trial in Lupus Nephritis. Clin Pharmacol Ther. 2026 Aug;120(2):429-439. doi: 10.1002/cpt.70307. Epub 2026 May 22.

    PubMed 42175562
  • Avasare R, Drexler Y, Caster DJ, Mitrofanova A, Jefferson JA. Management of Lupus Nephritis: New Treatments and Updated Guidelines. Kidney360. 2023 Oct 1;4(10):1503-1511. doi: 10.34067/KID.0000000000000230.

    PubMed 37528520

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing Anifrolumab in people with Lupus Nephritis, run by AstraZeneca at 164 sites in 24 countries.

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 6 inclusion and 8 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: under way, not looking for participants, as of the sponsor's last update on 28 Oct 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 164 sites in China, United States, Japan, Brazil, India and 19 more countries. 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?

This study is still under way. Results are not available in the source record yet.

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?

Difference in proportion of participants with CRR (Complete Renal Response) in anifrolumab group compared with placebo group (time frame: Week 52). 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 NCT05138133, which also lists 2 linked publications.

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 28 Oct 2026.

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