AzTrials
AzTrials

Refractory Immune-mediated Necrotizing MyopathyPhase 1/2NCT07752264

A Phase I/II Study of Eque-cel in Subjects Withimmune-mediated Necrotizing Myopathy

A Phase 1/2 study testing Equecabtagene Autoleucel Injection (Eque-cel) in people with Refractory Immune-mediated Necrotizing Myopathy, run by Nanjing IASO Biotechnology Co., Ltd. at 4 sites in China.

Not yet recruiting

Opening soon. The study is approved but enrolment has not started yet. Sites may already take enquiries.

Sites and contacts
Official record
Search all trials

Trial summary

This is an open-label, single-arm Phase I/II clinical study to evaluate the efficacy and safety of Eque-cel Injection in patients with refractory immune-mediated necrotizing myopathy. Read more about this study

Who is it for?
Ages 18 years and older
What is being tested?
Equecabtagene Autoleucel Injection (Eque-cel)
Type of treatment
Injection or infusion
Could I receive a placebo?
No, everyone receives an active treatment
How many people
27 participants
Where
4 sitesChina
Study dates
15 Aug 2026to 15 Aug 2043
Phase
Phase 1/2
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 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • 1. At the time of signing the informed consent form, the age is ≥ 18 years old.
  • 2.Based on the 2016 ENMC classification criteria, the clinical diagnosis is IMNM.
  • 3.At the time of screening, the anti-SRP antibody or anti-HMGCR antibody is positive.
  • 4. Refractory IMNM that failed or relapsed after standard treatment, and the disease is still active at the time of screening.
  • 5.The subjects must have appropriate organ functions.
  • 6.The subjects and their spouses agree to take effective contraceptive measures (excluding safe period contraception) from the time of the subject signing the informed consent form until one year after the CAR-T cell infusion.
  • 7. The subjects must agree to sign or personally write and present the informed consent form approved by the ethics committee before starting any screening procedures.

Who cannot join

  • 1. Having end-stage myositis with involvement of terminal organs may pose additional risks or interfere with the study assessment.
  • 2.Presence of irreversible muscle involvement and/or severe atrophy may bring additional risks or interfere with the study assessment.
  • 3.Uncontrolled interstitial lung disease or any other uncontrolled manifestations of IIM, as judged by the investigator, may require the use of prohibited drugs during the study period.
  • 4. Diagnosed with other inflammatory or non-inflammatory myopathies.
  • 5.Any other known autoimmune disease that the investigator considers to interfere with the accurate assessment of clinical symptoms of IMNM or place the patient at excessive risk.
  • 6. Those with a history of solid organ transplantation.
Show all 21Show fewer
  • 7. History of autologous or allogeneic stem cell transplantation.
  • 8. Previous history of BCMA-targeted drug treatment.
  • 9.Having occurred or planned to undergo major surgery or surgical treatment within 4 weeks before enrollment or within 12 weeks after infusion.
  • 10. Known primary immunodeficiency (congenital or acquired).
  • 11. Having a clear history of mental disorder or a history of substance abuse for mental disorders that cannot be quit.
  • 12.The subject has uncontrollable active fungal, viral, bacterial or other infections (having persistent infection-related signs/symptoms, without improvement after appropriate anti-infection treatment) or infections requiring intravenous anti-infection drug treatment.
  • 13.Positive hepatitis B surface antigen (HBsAg) or hepatitis B core antibody (HBcAb) and abnormal peripheral blood hepatitis B virus (HBV) DNA test (defined as HBV DNA quantification ≥ 100IU/ml or ≥ 1000 copies /ml or above the normal reference range of the testing center or positive for qualitative HBV DNA detection) ; hepatitis C virus (HCV) antibody positive and peripheral blood HCV RNA positive (defined as ≥ 1000 IU/mL); human immunodeficiency virus (HIV) antibody positive; cytomegalovirus (CMV) DNA positive (defined as ≥ 1000 IU/mL); Treponema pallidum specific antibody positive and positive for the rapid plasma reagin test for syphilis.
  • 14.Severe heart disease: including but not limited to unstable angina pectoris and/or myocardial infarction within 12 months of the screening period, any congestive heart failure (NYHA classification ≥ III), and a history of severe arrhythmia.
  • 15.Severe asthma or chronic obstructive pulmonary disease (COPD). Note: Mild or moderate asthma or COPD patients with stable conditions, after assessment and approval by the investigator and the sponsor, can be enrolled.
  • 16.Acute cerebrovascular disease events occurred within 6 months before enrollment, including transient ischemic attack or stroke history.
  • 17.Any serious and/or uncontrolled comorbid diseases as determined by the investigator to potentially interfere with the study assessment.
  • 18.Malignant tumors within 5 years before screening, excluding cured cervical carcinoma in situ, basal cell or squamous epithelial cell skin cancer, locally advanced prostate cancer after radical surgery, breast duct carcinoma in situ after radical surgery, or thyroid papillary carcinoma after radical surgery.
  • 19. Known history of allergy to cyclophosphamide, fludarabine, components of Eque-cel injection or supportive drugs required for toxicity management of CAR-T cell therapy (such as tocilizumab).
  • 21.Pregnant or lactating women.
  • 21. Other situations as determined by the investigator to be unsuitable for enrollment.

Trial locations and contacts

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

China4 sites
  • China-Japan Friendship Hospital

    Beijing, Beijing Municipality, 100029

    Xin Lu

  • The Second Affiliated Hospital, Zhejiang University School of Medicine

    Hangzhou, Zhejiang, 310009

  • Huashan Hospital of Fudan University

    Shanghai, Shanghai Municipality, 200040

    Wenhua Zhu

  • The First Affiliated Hospital of Zhengzhou University

    Zhengzhou, Henan, 450052

    Shengyun Liu

Other trials in China

About this study

Official title: An Open-label, Single-arm Phase I/II Clinical Study to Evaluate the Safety and Efficacy of Equecabtagene Autoleucel Injection (Eque-cel) in Subjects With Immune-mediated Necrotizing Myopathy

This is an open-label, single-arm Phase I/II clinical study to evaluate the efficacy and safety of Eque-cel Injection in patients with refractory immune-mediated necrotizing myopathy.

Read the detailed description

This study is an open-label, single-arm Phase I/II clinical trial evaluating the safety and efficacy of Eque-cel in subjects with immune-mediated necrotizing myopathy (IMNM). The study consists of two phases: Phase I and Phase II. The Phase I component will evaluate the safety, tolerability and preliminary efficacy of Eque-cel to identify the recommended Phase 2 dose (RP2D). Following RP2D determination from Phase I, the Phase II stage will enroll additional subjects at this dose level to confirm the efficacy of Eque-cel injection in patients with IMNM. All subjects will undergo a primary follow-up period of 2 years after infusion of Eque-cel injection, followed by long-term follow-up extending up to 15 years.

Being tested
Equecabtagene Autoleucel Injection (Eque-cel)
Keywords
Immune-mediated necrotizing myopathy, Refractory, Eque-cel, anti-SRP antibody, anti-HMGCR antibody, MMT-8

What participants receive

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

  • Equecabtagene Autoleucel Injection (Eque-cel)Drug

    Also called FUCASO

    Eque-cel is a personalized, BCMA-targeted gene-modified autologous T-cell immunotherapy product capable of recognizing and eliminating both malignant and normal cells expressing BCMA. The CAR specifically identifies BCMA via a fully human single-chain variable fragment (scFv) with low immunogenicity, activates, proliferates, secretes cytokines, and kills target cells through the CD3ζ domain, while enhancing CAR-T expansion and persistence via 4-1BB costimulation signaling. Eque-cel demonstrates high affinity for the BCMA antigen both in vitro and in vivo, as well as efficient killing of antigen-loaded cells.

Study groups in NCT07752264
Study groupRoleWhat they receive
Equecabtagene Autoleucel Injection(Eque-cel)ExperimentalEligible subjects will receive single intravenous infusion of Eque-cel Injection after successful screening and baseline assessment. Eque-cel Injection will be infused at 1.0 x 10^6 CAR-T cells/kg or 0.5 x 10^6 CAR-T cells/kg。
Receives: Drug: Equecabtagene Autoleucel Injection (Eque-cel)

What is being measured

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

  1. Phase I: Safety endpoint - Adverse Events (AEs)

    Incidence and severity of adverse events as assessed by NCI-CTCAE v5.0 (except CRS and ICANS assessed according to the criteria of 2019 ASTCT criteria).

    Measured: up to 2 years from Eque-cel Injection infusion

  2. Phase I: Safety endpoint-incidence of Dose-limiting toxicity (DLT)

    Percentage of participants who experienced DLT within 28 days after Eque-cel administration.

    Measured: Time Frame: up to 28 days from Eque-cel Injection infusion

  3. Phase II: Efficacy endpoint- TIS response

    Proportion of participants achieving TIS response

    Measured: up to the 2 years after Eque-cel Injection infusion

Secondary outcomes (20)
  1. Phase I: Efficacy endpoint -TIS response

    Proportion of participants achieving TIS response

    Measured: up to the 2 years after Eque-cel Injection Infusion

  2. Phase II:Efficacy endpoint -Proportion of participants achieving minimal improvement response (TIS ≥ 20 points)

    Defined as achieving The Total Improvement Score (TIS)≥ 20 points (minimum improvement)

    Measured: From baseline to 12 months after Eque-cel Injection Infusion

  3. Phase I/II:Efficacy endpoint -Change in mean Total Improvement Score (TIS) value

    Defined as achieving the Total Improvement Score (TIS)

    Measured: up to 2 years from Eque-cel Injection infusion

  4. Phase I/II:Efficacy endpoint -The changes in PtGA scores

    The PhGA scale will be completed by patients at each study visit.

    Measured: up to 2 years from Eque-cel Injection infusion

  5. Phase I/II:Efficacy endpoint -The changes in PhGA scores

    The PhGA scale will be completed by investigators at each study visit.

    Measured: up to 2 years from Eque-cel Injection infusion

  6. Phase I/II:Efficacy endpoint-MMT-8

    The changes in Manual Muscle Testing-8 (MMT-8) As measured by testing proximal muscles.

    Measured: up to 2 years from Eque-cel Injection infusion

  7. Phase I/II:Efficacy endpoint -HAO Scale

    HAQ will be completed by subjects at each study visit.

    Measured: up to 2 years from Eque-cel Injection infusion

  8. Phase I/II:Efficacy endpoint -CK

    Changes in the levels of Creatine Kinase (CK)

    Measured: up to 2 years from Eque-cel Injection infusion

  9. The changes in MDAAT scores

    MDAAT will be completed by investigators at each study visit.

    Measured: up to 2 years from Eque-cel Injection infusion

  10. Phase I/II:Efficacy endpoint -hormone dosage reduction

    The proportion of subjects whose hormone dosage reduction.

    Measured: From baseline to 6 and 12 months after Eque-cel Injection Infusion

  11. Phase II:Safety endpoint - Adverse Events (AEs)

    Incidence and severity of adverse events as assessed by NCI-CTCAE v5.0 (except CRS and ICANS assessed according to the criteria of 2019 ASTCT criteria)

    Measured: up to 2 years from Eque-cel Injection infusion

  12. Phase I/II Pharmacokinetic Endpoint - Cmax (CAR-T cells)

    The maximum concentration (Cmax) of BCMA CAR-T in peripheral blood after CAR-T infusion.

    Measured: up to 2 years from Eque-cel Injection infusion

  13. Phase I/II Pharmacokinetic Endpoint - Tmax (CAR-T cells)

    The time for BCMA CAR-T to reach the maximum concentration (Tmax) after CAR-T infusion.

    Measured: up to 2 years from Eque-cel Injection infusion

  14. Phase I/II Pharmacokinetic Endpoint - AUC (CAR-T cells)

    Area under the curve of 28 days, 90 days and the last time point. (AUC0-28d, AUC0-90,AUC0-last) for BCMA CAR-T.

    Measured: up to 2 years from Eque-cel Injection infusion

  15. Phase I/II Pharmacokinetic Endpoint - Cmax (VCN)

    The maximum concentration (Cmax) of lentiviral vector copy number (VCN) in peripheral blood after infusion.

    Measured: up to 2 years from Eque-cel Injection infusion

  16. Phase I/II Pharmacokinetic Endpoint - Tmax (VCN)

    The time for VCN to reach the maximum concentration (Tmax) after infusion.

    Measured: up to 2 years from Eque-cel Injection infusion

  17. Phase I/II Pharmacokinetic Endpoint - AUC (VCN)

    Area under the curve of 28 days, 90 days and the last time point (AUC0-28d, AUC0-90d, AUC0-last) for VCN.

    Measured: up to 2 years from Eque-cel Injection infusion

  18. hase I/II Pharmacodynamic Endpoint - inflammatory markers

    Changes in levels of inflammatory markers, including CRP, Ferritin, and IL-6.

    Measured: up to 2 years from Eque-cel Injection infusion

  19. Phase I/II Pharmacodynamic Endpoint - Serum immunoglobulin

    Changes in serum immunoglobulin (IgG, IgA, IgM) levels from baseline.

    Measured: up to 2 years from Eque-cel Injection infusion

  20. Phase I/II Pharmacodynamic Endpoint-sBCMA

    The concentration of soluble BCMA in peripheral blood of experimental group at each time point.

    Measured: up to 2 years from Eque-cel Injection infusion

Timeline

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

  1. First posted7 Aug 2026
  2. Study start15 Aug 2026 (estimated)
  3. Primary completion15 Aug 2030 (estimated)
  4. Study completion15 Aug 2043 (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 1/2
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrolment
27 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT07752264
Sponsor's protocol ID
CT103AC006
Status last verified
Aug 2026
First submitted
3 Aug 2026
Last updated
7 Aug 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A Phase 1/2 study testing Equecabtagene Autoleucel Injection (Eque-cel) in people with Refractory Immune-mediated Necrotizing Myopathy, run by Nanjing IASO Biotechnology Co., Ltd. at 4 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 21 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: opening soon, as of the sponsor's last update on 7 Aug 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 4 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. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this combined phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

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?

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?

Phase I: Safety endpoint - Adverse Events (AEs) (time frame: up to 2 years from Eque-cel Injection infusion). The study lists 3 primary outcomes in all. 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 7 Aug 2026.

Free account

Keep searching with a free account

You’ve used your 3 free searches for this session. Log in or create a free AzTrials account to keep searching clinical trials and save the ones you want to follow.

Create a free accountLog in