AzTrials
AzTrials

Connective Tissue DiseasesPhase 2NCT05998759

Telitacicept for the Treatment of Connective Tissue Disease-associated Thrombocytopenia

A Phase 2 study testing Telitacicept in people with Connective Tissue Diseases and Thrombocytopenia, run by Beijing Hospital at 23 sites in China.

Recruiting

Looking for participants now. Contact the study team or a site below to ask about taking part.

Sites and contacts
Official record
Search all trials

Trial summary

The goal of this clinical trial is to evaluate the efficacy and safety of Telitacicept for the treatment of connective tissue disease-associated thrombocytopenia. Read more about this study

Who is it for?
Ages 18 to 75 years
Conditions the study is for
Connective Tissue Diseases, Thrombocytopenia
What is being tested?
Telitacicept
Type of treatment
Injection or infusion
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
296 participants
Where
23 sitesChina
Study dates
2 Dec 2023to Dec 2025
Phase
Phase 2
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 75 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Subjects who have been diagnosed with connective tissue disease (CTD)-associated thrombocytopenia. And CTD includes primary Sjögren syndrome (according to the 2002 American College of Rheumatology (ACR)/ European League against Rheumatism (EULAR) classification criteria), systemic lupus erythematosus (SLE, according to the 1997 or the 2009 ACR classification criteria), and undifferentiated connective tissue disease (according to the 1999 international classification criteria)
  • Refractory thrombocytopenia defined as:
  • Either: Failure to maintain sustained remission after treatment by glucocorticoid and at least one immunosuppressant (i.e. cyclophosphamide, cyclosporine, mycophenolate mofetil, azathioprine, tacrolimus, methotrexate, leflunomide and hydroxychloroquine, et al.) Or: Relapse during oral glucocorticoid tapering or after withdrawal
  • 50×10^9/L>PLT
  • anti-nuclear antibody (ANA) positive (≥1:80, any karyotype) detected in the laboratory of each research center
  • Standard therapy should be maintained stable for at least 14 days prior to the first dose of the experimental drug or placebo. Standard therapy refers to the following treatment (monotherapy or in combination): glucocorticoid, hydroxychloroquine, and other immunosuppressants (i.e. cyclophosphamide, cyclosporine, mycophenolate mofetil, azathioprine, tacrolimus, methotrexate and leflunomide, et al.)
  • Signed informed consent form, willing or able to participate in all required study evaluations and procedures

Who cannot join

  • Vital organ lethal bleeding (including but not limited to central nervous system bleeding, digestive tract bleeding) at screening, or intracranial bleeding 6 months prior to screening
  • Antiphospholipid syndrome, thrombotic thrombocytopenia purpura, hemolytic uremic syndrome, or thrombocytopenia secondary to other causes (such as sepsis, Epstein-Barr virus infection, cytomegalovirus infection, Corona Virus Disease-19 (COVID-19) infection, drugs, etc.)
  • Hematopoietic system disorders, such as myelodysplastic syndrome, paroxysmal sleep hemoglobinuria, aplastic anemia, leukemia, lymphoma, myelofibrosis and so on
  • Severe cardiovascular system disease, including: unstable or uncontrollable disease or condition affecting the function of the heart (such as angina pectoris, congestive heart failure, uncontrolled hypertension or arrhythmia)
  • Arteriovenous thromboembolism events
  • Receiving antiplatelet or anticoagulant therapy at screening
Show all 25Show fewer
  • Clinically significant electrocardiogram changes
  • corrected Q-T interval (QTc)>450ms for male, QTc>470ms for female
  • Severe pulmonary disease, including: unstable or uncontrollable disease or condition affecting respiratory function [e.g., diffuse alveolar hemorrhage, severe pulmonary hypertension, severe pulmonary interstitial disease (peripheral blood oxygen saturation <92% at rest without oxygen, or forced vital capacity (FVC)<50%, or carbon monoxide diffusing capacity (DLCO)<50%)]
  • Severe kidney disease, including: severe lupus nephritis (urinary protein > 6 g/24 hours or endogenous creatinine clearance < 30 ml /min) 8 weeks prior to randomization, active nephritis requiring current protocol disallowed drugs, severe renal insufficiency requiring hemodialysis or prednisone ≥100mg/ day (or equivalent) for ≥14 days
  • SLE or non-SLE related central nervous system disease (including epilepsy, psychosis, organic encephalopathy syndrome, cerebrovascular accident, encephalitis, central nervous system vasculitis) 8 weeks prior to randomization
  • Active hepatitis, a history of severe liver disease. Subjects positive for hepatitis B surface antigen (HBsAg) or antibodies to hepatitis C virus are excluded. As for subjects with antibodies to hepatitis B core antigen (HBcAb), further hepatitis B virus (HBV)-DNA should be tested. If HBV-DNA is negative, subjects could be enrolled; otherwise, subjects should be excluded
  • Abnormal laboratory results (including but not limited to: alanine aminotransferase (ALT) or aspertate aminotransferase (AST)≥3×ULN (upper limit of normal), white blood cell count <1.5×10^9/L)
  • Subjects with known active infections (e.g., shingles, COVID-19, HIV, active tuberculosis, etc.), and active or recurrent gastrointestinal ulcers
  • Pregnant or lactating women, and subjects with a during plan during the trial
  • Allergic reaction: history of allergic reactions to human biological products
  • Treatment with B cell-targeting agents such as Rituximab or Epratuzumab or Belimumab six months prior to randomization
  • Treatment with tumor necrosis factor (TNF) inhibitors or TNF-receptor blockers six months prior to randomization
  • Participating in clinical trial 28 days or 5 drug half-lives of the investigational agents prior to randomization
  • Received live vaccine 28 days prior to randomization
  • Treatment with unstable dosage of thrombopoietin receptor agonists such as Eltrombopag or Romiplostim 14 days prior to randomization
  • Subjects with depression or suicidal thoughts
  • Previous treatment with telitacicept
  • B cell targeting drug therapy is not tolerated or responsive
  • Investigator considers candidates not appropriating for the study

Trial locations and contacts

23 sites in 1 country. Contact the study team or a site near you to ask about taking part.

23 sites in 1 country

China23 sites, 23 recruiting
  • Beijing Hospital

    Beijing, Beijing Municipality

    Xuan Zhang, MD.

    Yongjing Cheng, MD.

    Recruiting
  • Peking University People's Hospital

    Beijing, Beijing Municipality

    Jing He, MD.

    Recruiting
  • Peking University Third Hospital

    Beijing, Beijing Municipality

    Rong Mu

    Recruiting
  • Second Xiangya Hospital of Central South University

    Changsha, Hunan

    Fen Li, MD.

    Recruiting
  • Xiangya Hospital of Central South University

    Changsha, Hunan

    Hui Luo, MD.

    Recruiting
  • West China Hospital

    Chengdu, Sichuan

    Qibing Xie, MD.

    Recruiting
  • First Affiliated Hospital, Sun Yat-Sen University

    Guangzhou, Guangdong

    Niansheng Yang, MD.

    Recruiting
  • Guangdong Provincial People's Hospital

    Guangzhou, Guangdong

    Yang Li, MD.

    Recruiting
  • The First Affiliated Hospital of Anhui Medical College

    Hefei, Anhui, 230022

    Shengqian Xu, MD.

    Recruiting
  • The First Affiliated Hospital of China University of Science and Technology (Anhui Provincial)

    Hefei, Anhui

    Zhu Chen, MD.

    Recruiting
  • The Affiliated Hospital of Inner Mongolia Medical University

    Hohhot, Inner Mongolia

    Hongbin Li, MD.

    Recruiting
  • Shandong Provincial Hospital

    Jinan, Shandong

    Hongsheng Sun, MD.

    Recruiting
  • The First People's Hospital of Yunnan

    Kunming, Yunnan

    Qin Li, MD.

    Recruiting
  • Changhai Hospital

    Shanghai, Shanghai Municipality

    Dongbao Zhao, MD.

    Recruiting
  • RenJi Hospital

    Shanghai, Shanghai Municipality

    Sheng Chen, MD.

    Recruiting
  • First Hospital of China Medical University

    Shenyang, Liaoning

    Pinting Yang, MD.

    Recruiting
  • Shanxi Bethune Hospital

    Taiyuan, Shanxi

    Liyun Zhang, MD.

    Recruiting
  • Institute of Hematology & Blood Diseases Hospital

    Tianjin, Tianjin Municipality

    Lei Zhang, MD.

    Recruiting
  • Tianjin First Central Hospital

    Tianjin, Tianjin Municipality

    Wufang Qi, MD.

    Recruiting
  • Tianjin Medical University General Hospital

    Tianjin, Tianjin Municipality

    Wei Wei, MD.

    Recruiting
  • People's Hospital of Xinjiang Uygur Autonomous Region

    Ürümqi, Xinjiang Uygur Autonomous Region

    Lijun Wu, MD.

    Recruiting
  • Wuhan Union Hospital, China

    Wuhan, Hubei

    Anbin Huang, MD.

    Recruiting
  • The First Affiliated Hospital of Zhengzhou University

    Zhengzhou, Henan

    Guanmin Gao, MD., Guanmingao@zzu.edu.cn

    Recruiting

Other trials in China

About this study

Official title: A Randomized, Double-blind Placebo-controlled Study of Recombinant Human B Lymphocyte Stimulating Factor Receptor-Fc Fusion Protein for the Treatment of Connective Tissue Disease-associated Thrombocytopenia

The goal of this clinical trial is to evaluate the efficacy and safety of Telitacicept for the treatment of connective tissue disease-associated thrombocytopenia.

Read the detailed description

In this randomized, double-blind placebo-controlled study, the investigators aim to evaluate the efficacy and safety of Telitacicept for the treatment of connective tissue disease-associated thrombocytopenia. After screening, eligible participants will be randomized at a 1: 1 ratio to receive either subcutaneous Telitacicept 160 mg or placebo once a week for 24 weeks. The background standard therapy is maintained stable during the whole treatment period.

Being tested
Telitacicept, Placebo
Keywords
Connective Tissue Diseases, Thrombocytopenia, biological agents, B cell, targeted therapy
Medical subject headings
Connective Tissue Diseases, Thrombocytopenia

What participants receive

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

  • TelitaciceptBiological

    Also called recombinant human B lymphocyte stimulating factor receptor-Fc fusion protein, Recombinant Human B Lymphocyte(RC18), Tai'ai®

    subcutaneous telitacicept 160 mg weekly for 24 weeks.

  • PlaceboDrug

    Also called Placebo control, control

    subcutaneous placebo weekly for 24 weeks.

Study groups in NCT05998759
Study groupRoleWhat they receive
Telitacicept plus standard therapyExperimentalTelitacicept (160mg ih qw for 24 weeks) combined with standard therapy. Standard therapy refers to the following treatment (monotherapy or in combination): glucocorticoid, hydroxychloroquine, and other immunosuppressants (i.e. cyclophosphamide, cyclosporine, mycophenolate mofetil, azathioprine, tacrolimus, methotrexate and leflunomide, et al.).
Receives: Biological: Telitacicept
Placebo plus standard therapyPlacebo comparatorPlacebo combined with standard therapy. Standard therapy refers to the following treatment (monotherapy or in combination): glucocorticoid, hydroxychloroquine, and other immunosuppressants (i.e. cyclophosphamide, cyclosporine, mycophenolate mofetil, azathioprine, tacrolimus, methotrexate and leflunomide, et al.).
Receives: Drug: Placebo

What is being measured

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

  1. Overall response (CR + PR) rate

    Response is deemed as complete (CR) if the platelet (PLT) count is ≥ 100×10^9/L, partial (PR) if the platelet count ranges from 50×10^9/L to 100×10^9/L and at least doubled from baseline. No active bleeding is allowed in participants classified as CR or PR.

    Measured: at week 24

Secondary outcomes (8)
  1. Overall response (CR + PR) rate

    Response is deemed as complete (CR) if the platelet count is ≥ 100×10^9/L, partial (PR) if the platelet count ranges from 50×10^9/L to 100×10^9/L and at least doubled from baseline. No active bleeding is allowed in participants classified as CR or PR.

    Measured: at week 12

  2. Rescue treatment rate

    Rescue treatment is initiated if the platelet count is <10×10^9/L, or the participant is with active bleeding, or based on the investigator's judgement when the platelet count ranges from 10×10^9/L to 30×10^9/L.

    Measured: at week 24

  3. Time to rescue treatment

    Time to rescue treatment refers to period duration from the initiation of Telitacicept or placebo (day 1) to rescue treatment.

    Measured: at week 24

  4. Relapse rate

    No response refers to the platelet count is < 50×10^9/L, or increases for less than 1-fold from baseline, or with active central nervous system or digestive tract bleeding, or rescue treatment is initiated. Relapse is defined as no response recurring after a complete or partial response lasting for at least 7 days with treatment.

    Measured: at week 24

  5. Time to relapse

    Time to relapse refers to period duration from the initiation of Telitacicept or placebo (day 1) to relapse.

    Measured: at week 24

  6. treatment related adverse event

    According to the NCI CTCAE 5.0

    Measured: at week 24

  7. treatment related severe adverse event

    According to the NCI CTCAE 5.0

    Measured: at week 24

  8. bleeding scale

    According to the ITP bleeding scale (IBLS). The IBLS comprises of 11 grades from 0 (none) to 2 (marked bleeding) by history over the previous week or by exam; 2 being worse. These 11 grades include: skin by physical exam, oral by physical exam, skin by history, oral by history, epistaxis, gastrointestinal, urinary, gynecological, pulmonary, intracranial hemorrhage, and subconjunctival hemorrhage.

    Measured: at week 24

Timeline

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

  1. First posted21 Aug 2023
  2. Study start2 Dec 2023
  3. Primary completionDec 2025 (estimated)
  4. Study completionDec 2025 (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 2
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
296 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05998759
Sponsor's protocol ID
BJ-2021-235
Other IDs
BJ-2021-235, RCTAIIRCTD001
Status last verified
May 2025
First submitted
3 Aug 2023
Last updated
6 May 2025
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing Telitacicept in people with Connective Tissue Diseases and Thrombocytopenia, run by Beijing Hospital at 23 sites in China.

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 7 inclusion and 25 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: looking for participants now, as of the sponsor's last update on 6 May 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 23 sites in China. 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 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

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?

Contact Xuan Zhang, MD. (+86-01085136736, zxpumch2003@sina.com), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Overall response (CR + PR) rate (time frame: at week 24). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
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 6 May 2025.

Free account

Log in to keep searching

You’ve used your 3 free searches. AzTrials is free: log in or create a free account to keep searching clinical trials and save the ones you want to follow.

Create a free accountLog in