Study to Evaluate Rilzabrutinib in Adults and Adolescents With Persistent or Chronic Immune Thrombocytopenia (ITP)

NCT ID: NCT04562766

Last Updated: 2025-02-10

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

ACTIVE_NOT_RECRUITING

Clinical Phase

PHASE3

Total Enrollment

232 participants

Study Classification

INTERVENTIONAL

Study Start Date

2020-12-14

Study Completion Date

2026-08-26

Brief Summary

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This is a randomized, double-blind study of rilzabrutinib in patients with persistent or chronic ITP, with an average platelet count of \<30,000/μL (and no single platelet count \>35,000/μL) on two counts at least 5 days apart in the 14 days before treatment begins. Patients will receive rilzabrutinib or placebo 400mg twice daily.

For each patient, the study will last up to 60 weeks from the start of the Screening Period to the End of Study (EOS) visit. This includes Screening (up to 4 weeks) through a 12 to 24-week Blinded Treatment Period followed by a 28-week Open-Label Period. Followed by a 4-week post dose follow-up.

For adult participants, the maximum duration of the long-term extension (LTE) period will be 12 months from the date of the last adult participant to enter the LTE.

For pediatric participants, the maximum duration of the LTE period will be 12 months from the date of the last pediatric participant to enter the LTE.

Detailed Description

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Conditions

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Immune Thrombocytopenia

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors
Double-Blind

Study Groups

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Rilzabrutinib

Patients receive rilzabrutinib 400mg orally twice daily for up to 24 weeks followed by 28 weeks of open label period

Group Type EXPERIMENTAL

Rilzabrutinib

Intervention Type DRUG

400mg Caplet

Placebo

Patients receive matching placebo 400mg orally twice daily for up to 24 weeks

Group Type PLACEBO_COMPARATOR

Placebo

Intervention Type DRUG

400mg Caplet

Interventions

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Rilzabrutinib

400mg Caplet

Intervention Type DRUG

Placebo

400mg Caplet

Intervention Type DRUG

Other Intervention Names

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PRN1008 PRN1008 Placebo

Eligibility Criteria

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Inclusion Criteria

1. Patients will be male and female with primary ITP with duration of \>6 months in pediatric participants aged 12 to \<18 years (pediatric participants aged 10 to \<12 years will be enrolled in the EU \[EEA countries\] only) and duration of \>3 months in ages 18 years and above
2. Patients who had a response (achievement of platelet count ≥50,000/µL) to IVIg/anti-D or CSs that was not sustained and who have documented intolerance, insufficient response or any contra-indication to any appropriate courses of standard of care ITP therapy
3. An average of 2 platelet counts at least 5 days apart of \<30,000/µL during the Screening period and no single platelet count \>35,000/µL, within 14 days prior to the first dose of study drug.

\- Pediatric patients must additionally be determined to need treatment for ITP as per clinical assessment by the Investigator.
4. Adequate hematologic, hepatic, and renal function (absolute neutrophil count ≥1.5 X 10\^9/L, AST/ALT ≤1.5 x upper limit of normal \[ULN\], albumin ≥3 g/dL, total bilirubin ≤1.5 x ULN \[unless the patient has documented Gilbert syndrome\], glomerular filtration rate \>50 \[Cockcroft and Gault method for adult and Bedside Schwartz Equation for Pediatric participants\])
5. Hemoglobin \>9 g/dL within 1 week prior to Study Day 1
6. All contraceptive use by men and women should be consistent with local regulations regarding the methods of contraception for those participating in clinical studies
7. Patients must be able to provide written informed consent or informed assent with corresponding informed consent obtained from the patient's guardian and agree to the schedule of assessments

Exclusion Criteria

1. Patients with secondary ITP
2. Pregnant or lactating women
3. History (within 5 years of Study Day 1) or current, active malignancy requiring or likely to require chemotherapeutic or surgical treatment during the study, with the exception of non melanoma skin cancer
4. Transfusion with blood, blood products, plasmapheresis, or use of any other rescue medications with intent to increase platelet count within 14 days before Study Day 1
5. Change in CS and/or TPO-RA dose within 14 days prior to Study Day 1 (more than 10% variation from current doses)
6. Immunosuppressant drugs other than CSs within 5 times the elimination half-life of the drug or 14 days of Study Day 1, whichever is longer
7. Treatment with rituximab or splenectomy within the 3 months prior to Study Day 1

\- Patients treated with rituximab will have normal B-cell counts prior to enrollment
8. Has received any investigational drug within the 30 days before receiving the first dose of study medication, or at least 5 times elimination half-life of the drug (whichever is longer); patient should not be using an investigational device at the time of dosing

* Patients who previously received treatment with Bruton's Tyrosine Kinase (BTK) inhibitors (except rilzabrutinib) within 30 days before the first dose of study drug are not eligible
* Patients who previously received rilzabrutinib at any time are not eligible
9. History of solid organ transplant
10. Myelodysplastic syndrome
11. Live vaccine within 28 days prior to Study Day 1 or plan to receive one during the study
12. Planned surgery in the time frame of the dosing period
Minimum Eligible Age

10 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Principia Biopharma, a Sanofi Company

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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University of Southern California_Investigational Site Number 84024

Los Angeles, California, United States

Site Status

UCSF Benioff Children's Hospital San Francisco_Investigational Site Number 84020

San Francisco, California, United States

Site Status

Lundquist Institute for Biomedical Innovation at Harbor UCLA Medical Center_Investigational Site Number 84037

Torrance, California, United States

Site Status

The Oncology Institute of Hope and Innovation_Investigational Site Number 84031

Whittier, California, United States

Site Status

Children's Hospital Colorado_Investigational Site Number 84025

Aurora, Colorado, United States

Site Status

IMMUNOe International Research Centers_Investigational Site Number 84028

Centennial, Colorado, United States

Site Status

ASCLEPES Research Centers_Investigational Site Number 84023

Weeki Wachee, Florida, United States

Site Status

Children's Healthcare of Atlanta_Investigational Site Number 84034

Atlanta, Georgia, United States

Site Status

Rush University Medical Center_Investigational Site Number 84029

Chicago, Illinois, United States

Site Status

University of Louisville - James Graham Brown Cancer Center_Investigational Site Number 84033

Louisville, Kentucky, United States

Site Status

Massachusetts General Hospital Site Number : 84038

Boston, Massachusetts, United States

Site Status

Montefiore Medical Center_Investigational Site Number 84032

The Bronx, New York, United States

Site Status

University Hospitals Cleveland Medical Center Site Number : 84036

Cleveland, Ohio, United States

Site Status

Cleveland Clinic_Investigational Site Number 84026

Cleveland, Ohio, United States

Site Status

The Children's Hospital of Philadelphia (CHOP)_Investigational Site Number 84027

Philadelphia, Pennsylvania, United States

Site Status

University of Utah-Huntsman Cancer Institute_Investigational Site Number 84035

Salt Lake City, Utah, United States

Site Status

University of Washington Medical Centre Site Number : 84041

Seattle, Washington, United States

Site Status

Investigational Site Number : 3206

Capital Federal, Buenos Aires, Argentina

Site Status

Investigational Site Number : 3211

La Plata, Buenos Aires, Argentina

Site Status

Investigational Site Number : 3205

Córdoba, Córdoba Province, Argentina

Site Status

Investigational Site Number : 3209

Corrientes, , Argentina

Site Status

Investigational Site Number : 3208

San Juan, , Argentina

Site Status

Investigational Site Number : 3607

Kogarah, New South Wales, Australia

Site Status

Investigational Site Number : 3608

Westmead, New South Wales, Australia

Site Status

Investigational Site Number : 3611

Brisbane, Queensland, Australia

Site Status

Investigational Site Number : 3609

Adelaide, South Australia, Australia

Site Status

Investigational Site Number : 3606

Frankston, Victoria, Australia

Site Status

Investigational Site Number : 3610

Perth, Western Australia, Australia

Site Status

Investigational Site Number : 4005

Graz, , Austria

Site Status

Investigational Site Number : 4004

Leoben, , Austria

Site Status

Investigational Site Number : 4001

Linz, , Austria

Site Status

Investigational Site Number : 4003

Steyr, , Austria

Site Status

Investigational Site Number : 4002

Vienna, , Austria

Site Status

Hospital Sao Rafael Instituto D'Or da Bahia Site Number : 7608

Salvador, Estado de Bahia, Brazil

Site Status

Uniao Oeste Paranaense de Estudos e Combates ao Cancer Site Number : 7610

Cascavel, Paraná, Brazil

Site Status

Hospital De Clinicas De Porto Alegre Site Number : 7605

Porto Alegre, Rio Grande do Sul, Brazil

Site Status

Hospital Santa Marcelina Site Number : 7611

São Paulo, São Paulo, Brazil

Site Status

CEMEC Oncologica do Brasil Site Number : 7606

Belém, , Brazil

Site Status

HEMORIO - Instituto Estadual de Hematologia Arthur de Siqueira Cavalcanti Site Number : 7609

Rio de Janeiro, , Brazil

Site Status

Hospital do Servidor Publico Estadual de Sao Paulo Site Number : 7607

São Paulo, , Brazil

Site Status

Investigational Site Number : 12404

Edmonton, Alberta, Canada

Site Status

Investigational Site Number : 12406

Toronto, Ontario, Canada

Site Status

CHU Sainte-Justine_Investigational site number 12405

Montreal, Quebec, Canada

Site Status

Investigational Site Number : 15201

La Serena, Coquimbo Region, Chile

Site Status

Investigational Site Number : 15204

Santiago, Reg Metropolitana de Santiago, Chile

Site Status

Investigational Site Number : 15202

Viña del Mar, Región de Valparaíso, Chile

Site Status

Wuhan Union Hospital of Tongji Medical College of HUST - Investigational Site Number: 15601

Wuhan, Hubei, China

Site Status

Shengjing Hospital of China Medical University - Investigational Site Number: 15603

Shenyang, Liaoning, China

Site Status

Shaanxi Provincial People's Hospital - Investigational Site Number: 15607

Xi'an, Shaanxi, China

Site Status

Qilu Hospital of Shandong University - Investigational Site Number: 15605

Jinan, Shandong, China

Site Status

Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences - Investigational Site Number: 15602

Tianjin, Tianjin Municipality, China

Site Status

Second Affiliated Hospital of Kunming Medical University - Investigational Site Number: 15604

Kunming, Yunnan, China

Site Status

Investigational Site Number : 15611

Hangzhou, , China

Site Status

Investigational Site Number : 15608

Hefei, , China

Site Status

Investigational Site Number : 15610

Nanchang, , China

Site Status

Investigational Site Number : 15613

Tangshan, , China

Site Status

Investigational Site Number : 15609

Wuxi, , China

Site Status

Investigational Site Number : 15614

Zhenjiang, , China

Site Status

Investigational Site Number : 25014

Angers, , France

Site Status

Investigational Site Number : 25011

Créteil, , France

Site Status

Investigational Site Number : 25010

Dijon, , France

Site Status

Investigational Site Number : 25009

Nantes, , France

Site Status

Investigational Site Number : 25008

Paris, , France

Site Status

Investigational Site Number : 25012

Paris, , France

Site Status

Investigational Site Number : 25007

Pessac, , France

Site Status

Investigational Site Number : 27610

Berlin, , Germany

Site Status

Investigational Site Number 27612

Düsseldorf, , Germany

Site Status

Investigational Site Number : 27613

Frankfurt am Main, , Germany

Site Status

Investigational Site Number : 27611

Recklinghausen, , Germany

Site Status

Investigational Site Number : 34803

Budapest, , Hungary

Site Status

Investigational Site Number : 34805

Debrecen, , Hungary

Site Status

Investigational Site Number : 34801

Győr, , Hungary

Site Status

Investigational Site Number : 34804

Nyíregyháza, , Hungary

Site Status

Investigational Site Number : 34802

Székesfehérvár, , Hungary

Site Status

Investigational Site Number : 37605

Haifa, , Israel

Site Status

Investigational Site Number : 37606

Kfar Saba, , Israel

Site Status

Investigational Site Number : 37607

Tel Aviv, , Israel

Site Status

Investigational Site Number : 37608

Tel Litwinsky, , Israel

Site Status

Investigational Site Number : 37609

Ẕerifin, , Israel

Site Status

Investigational Site Number : 38014

Florence, Tuscany, Italy

Site Status

Investigational Site Number : 38012

Bologna, , Italy

Site Status

Investigational Site Number : 38015

Milan, , Italy

Site Status

Investigational Site Number : 38013

Milan, , Italy

Site Status

Investigational Site Number : 38010

Trieste, , Italy

Site Status

Investigational Site Number : 38011

Vicenza, , Italy

Site Status

Investigational Site Number : 39214

Tsuchiura-shi, Ibaraki, Japan

Site Status

Investigational Site Number : 39205

Kanazawa, Ishikawa-ken, Japan

Site Status

Investigational Site Number : 39207

Sagamihara-shi, Kanagawa, Japan

Site Status

Investigational Site Number : 39202

Suita-shi, Osaka, Japan

Site Status

Investigational Site Number : 39201

Iruma-gun, Saitama, Japan

Site Status

Investigational Site Number : 39208

Bunkyo-ku, Tokyo, Japan

Site Status

Investigational Site Number : 39210

Meguro-ku, Tokyo, Japan

Site Status

Investigational Site Number : 39204

Setagaya City, Tokyo, Japan

Site Status

Investigational Site Number : 39209

Sumida-ku, Tokyo, Japan

Site Status

Investigational Site Number : 39212

Chiba, , Japan

Site Status

Investigational Site Number : 39203

Hiroshima, , Japan

Site Status

Investigational Site Number : 39206

Saitama-shi, , Japan

Site Status

Investigational Site Number : 48401

Monterrey, Nuevo León, Mexico

Site Status

Investigational Site Number : 48402

Chihuahua City, , Mexico

Site Status

Investigational Site Number : 48405

Delegacion Benito Juarez, , Mexico

Site Status

Investigational Site Number : 48404

Durango, , Mexico

Site Status

Investigational Site Number : 48406

Mexico City, , Mexico

Site Status

Investigational Site Number : 48403

Zapopan, , Mexico

Site Status

Erasmus MC_Investigational Site Number 52801

Rotterdam, , Netherlands

Site Status

Investigational Site Number : 57802

Bergen, , Norway

Site Status

Investigational Site Number : 57801

Grålum, , Norway

Site Status

Investigational Site Number : 61617

Piła, Greater Poland Voivodeship, Poland

Site Status

Investigational Site Number : 61609

Słupsk, Pomeranian Voivodeship, Poland

Site Status

Investigational Site Number : 61615

Gdynia, , Poland

Site Status

Investigational Site Number : 61614

Poznan, , Poland

Site Status

Investigational Site Number : 61612

Warsaw, , Poland

Site Status

Investigational Site Number : 61613

Wroclaw, , Poland

Site Status

Investigational Site Number : 64307

Moscow, , Russia

Site Status

Investigational Site Number : 64305

Moscow, , Russia

Site Status

Investigational Site Number : 64304

Novosibirsk, , Russia

Site Status

Investigational Site Number : 64301

Pyatigorsk, , Russia

Site Status

Investigational Site Number : 64302

Saint Petersburg, , Russia

Site Status

Investigational Site Number : 64306

Samara, , Russia

Site Status

Investigational Site Number : 64303

Tula, , Russia

Site Status

Investigational Site Number : 70201

Singapore, , Singapore

Site Status

Investigational Site Number : 70202

Singapore, , Singapore

Site Status

Investigational Site Number : 70203

Singapore, , Singapore

Site Status

Investigational Site Number : 41004

Busan, Busan, South Korea

Site Status

Investigational Site Number : 41001

Suwon, Gyeonggi-do, South Korea

Site Status

Investigational Site Number : 41003

Seoul, Seoul-teukbyeolsi, South Korea

Site Status

Investigational Site Number : 41005

Seoul, Seoul-teukbyeolsi, South Korea

Site Status

Investigational Site Number : 41006

Seoul, Seoul-teukbyeolsi, South Korea

Site Status

Investigational Site Number : 72408

Málaga, Málaga, Spain

Site Status

Investigational Site Number : 72407

Valencia, Valenciana, Comunidad, Spain

Site Status

Investigational Site Number : 72412

Barcelona, , Spain

Site Status

Investigational Site Number : 72414

Barcelona, , Spain

Site Status

Investigational Site Number : 72409

Barcelona, , Spain

Site Status

Investigational Site Number : 72416

Burgos, , Spain

Site Status

Investigational Site Number : 72410

Madrid, , Spain

Site Status

Investigational Site Number : 72411

Murcia, , Spain

Site Status

Investigational Site Number : 72413

Seville, , Spain

Site Status

Investigational Site Number : 76405

Bangkok, , Thailand

Site Status

Investigational Site Number : 76404

Bangkok, , Thailand

Site Status

Investigational Site Number : 76402

Chiang Mai, , Thailand

Site Status

Investigational Site Number : 76401

Khon Kaen, , Thailand

Site Status

Investigational Site Number : 76403

Songkhla, , Thailand

Site Status

Investigational Site Number 79208

Ankara, , Turkey (Türkiye)

Site Status

Investigational Site Number 79210

Istanbul, , Turkey (Türkiye)

Site Status

Investigational Site Number 79206

Izmir, , Turkey (Türkiye)

Site Status

Investigational Site Number 79209

Kayseri, , Turkey (Türkiye)

Site Status

Investigational Site Number : 80408

Dnipropetrovsk, , Ukraine

Site Status

Investigational Site Number : 80409

Kryvyi Rih, , Ukraine

Site Status

Investigational Site Number : 80410

Kyiv, , Ukraine

Site Status

Investigational Site Number : 82607

London, London, City of, United Kingdom

Site Status

Investigational Site Number : 82604

Harrow, , United Kingdom

Site Status

Investigational Site Number : 82606

London, , United Kingdom

Site Status

Investigational Site Number : 82609

London, , United Kingdom

Site Status

Investigational Site Number : 82603

Manchester, , United Kingdom

Site Status

Investigational Site Number : 82605

Norfolk, , United Kingdom

Site Status

Investigational Site Number : 82608

Southampton, , United Kingdom

Site Status

Countries

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United States Argentina Australia Austria Brazil Canada Chile China France Germany Hungary Israel Italy Japan Mexico Netherlands Norway Poland Russia Singapore South Korea Spain Thailand Turkey (Türkiye) Ukraine United Kingdom

References

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Kuter DJ, Ghanima W, Cooper N, Liebman HA, Zhang L, Hu Y, Miyakawa Y, Homenda W, Galindo LEM, Basquiera AL, Tan CW, Saydam G, Hutter-Kronke ML, Chai-Adisaksopha C, Gomez-Almaguer D, Tran H, Shin HJ, Dantas da Cunha Junior A, Lazar Z, Izquierdo CP, Kirgner I, Lucchini E, Kuzmina G, Fillitz M, Audia S, Taparia M, Cordoba M, Diab R, Yao M, Gouia I, Lee M, Daak A. Safety and efficacy of rilzabrutinib vs placebo in adults with immune thrombocytopenia: the phase 3 LUNA3 study. Blood. 2025 Jun 12;145(24):2914-2926. doi: 10.1182/blood.2024027336.

Reference Type DERIVED
PMID: 40090011 (View on PubMed)

Lin J, Radhakrishnan J. What Are Baskets, Umbrellas, and Platforms Doing in Nephrology Clinical Trials? J Am Soc Nephrol. 2025 Feb 3;36(8):1652-1654. doi: 10.1681/ASN.0000000648. No abstract available.

Reference Type DERIVED
PMID: 39899371 (View on PubMed)

Kuter DJ, Bussel JB, Ghanima W, Cooper N, Gernsheimer T, Lambert MP, Liebman HA, Tarantino MD, Lee M, Guo H, Daak A. Rilzabrutinib versus placebo in adults and adolescents with persistent or chronic immune thrombocytopenia: LUNA 3 phase III study. Ther Adv Hematol. 2023 Oct 18;14:20406207231205431. doi: 10.1177/20406207231205431. eCollection 2023.

Reference Type DERIVED
PMID: 37869360 (View on PubMed)

Other Identifiers

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PRN1008-018

Identifier Type: OTHER

Identifier Source: secondary_id

2023-509401-71

Identifier Type: REGISTRY

Identifier Source: secondary_id

EFC17093

Identifier Type: -

Identifier Source: org_study_id

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