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Systemic Lupus ErythematosusPhase 1/2CASTLENCT06347718

CAR-T Cells in Systemic B Cell Mediated Autoimmune Disease

A Phase 1/2 study testing anti-CD19 CAR T cell therapy in people with Systemic Lupus Erythematosus and Systemic Sclerosis, run by Miltenyi Biomedicine GmbH at 1 site in Germany.

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 investigational product is designed to effectively combat B cells in patients with autoimmune diseases. Autologous T cells enriched with CD4/CD8 are genetically engineered using a lentiviral vector to express chimeric antigen receptors (CARs) that target the CD19 antigen on the cell surface of B cells and their… Read more about this study

Who is it for?
Ages 18 years and older
What is being tested?
anti-CD19 CAR T cell therapy
Type of treatment
Injection or infusion
Could I receive a placebo?
No, everyone receives an active treatment
How many people
24 participants
Where
1 siteGermany
Study dates
17 Jul 2023to 31 May 2026
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

  • General:
  • Subjects must understand and voluntarily sign an informed consent form including written consent for data protection,
  • Adults aged ≥ 18 years at time of consent,
  • Adequate renal (eGFR > 30 ml/min/m2), liver (no Child Pugh C), heart (at worst NYHA III, EF > 30%) and pulmonary (FV and DLCO > 30%) function,
  • Male subjects unless surgically sterile, must agree to use two acceptable methods for contraception (e.g. spermicide and condom) during the trial and refrain from fathering a child starting from the time of signing the Informed Consent Form (ICF) until 12 months after dosing of the IMP,
  • Females of childbearing potential (FCBP) must have a negative urine pregnancy test at screening and must agree to use a highly effective contraceptive method (Pearl in-dex <1) starting from the time of signing the ICF and for 12 months after dosing of the IMP,
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  • Must be able to adhere to the study visit schedule and other protocol requirements,
  • Double vaccination against SARS-CoV-2 or SARS-CoV-2 within the last 6 months.
  • SLE specific:
  • Fulfilling the 2019 ACR/EULAR classification criteria of SLE,
  • Positivity of anti-dsDNA (> 4 U/l), anti-histone (+ or more), anti-nucleosome (+ or more) or anti-Sm antibodies (+ or more),
  • Active disease at screening, defined as ≥ 1 organ system with a British Isles Lupus Assessment (BILAG) A score (severe disease activity) or ≥ 2 organ systems with a BILAG B score (moderate disease activity),
  • Insufficient response or intolerance/ contraindication to glucocorticoids and to at least 2 of the following treatments: hydroxychloroquine, mycophenolate mofetil, belimumab, methotrexate, rituximab, cyclophosphamide. Insufficient response is defined as having increased disease activity based on the definition explained in the previous bullet point.
  • SSc specific:
  • Fulfilling the 2013 ACR/EULAR classification criteria of SSc),
  • Positivity (+ or more) for at least one SSc-specific parameter (Scl70, RNA polymerase, Th/To, RP11/12, U3RNP autoantibodies),
  • Signs for fast progression including (i) disease duration ≤ 5 years (from onset of first non-Raynaud manifestation), (ii) mRSS score 10-35 at screening, (iii) elevated acute phase reactant levels (CRP ≥ 6 mg/L, ESR ≥ 28mm/h or platelet count ≥ 330 G/L), (iii) mRSS increase ≥ 3 units or involvement of one new body area or mRSS increase ≥ 2 units in one body area or ≥ 1 tendon friction rub over 6 months,
  • Insufficient response or intolerance/ contraindication to at least 2 of the following treatments: mycophenolate mofetil, azathioprine, nintedanib, methotrexate, rituximab. Insufficient response is defined as having increased disease activity based on the definition explained in the previous bullet point.
  • DM/PM specific:
  • Fulfilling the 2017 ACR/EULAR classification criteria for probable or definite DM or PM,
  • Presence of active myositis in muscle biopsy or muscle MRI and/or signs of interstitial lung disease related to DM/PM,
  • Positivity (+ or more) for at least one myositis-specific antibody (aminoacyl tRNA synthetases, Mi2, MDA5, SAE, SRP, ARS, HMGCR, MJ, TIF1gamma),
  • Muscle weakness as define by MMT < 142 and 2 of the following criteria: VAS patients Global ≥2cm, VAS physician Global ≥ 2cm, HAQ > 0.25, at least one muscle enzyme > 1.3 times upper limit of normal, VAS global extra muscular activity ≥ 2cm,
  • Insufficient response or intolerance/ contraindication to glucocorticoids and to at least 2 of the following treatments: mycophenolate mofetil, ciclosporin A, tacrolimus, methotrexate, rituximab, intravenous immunoglobulins. Insufficient response is defined as having increased disease activity based on the definition explained in the previous bullet point.

Who cannot join

  • Clinically suitability for a less burdensome and/or approved therapeutic approach, as judged by the investigator
  • ANC < 1.000/mm3, ALC < 500/mm3 or hemoglobin < 8g/dl, absolute CD3+ T cell count < 100/μl,
  • Uncontrolled severe concomitant disease, such as cancer (except basal or squamous cell skin cancer) and diabetes mellitus,
  • Severely impaired renal (eGFR ≤ 30 ml/min/m2), liver (Child Pugh C), heart (NYHA IV, EF ≤ 30%) and pulmonary (FV and DLCO ≤ 30%) function,
  • Any condition, including the presence of laboratory abnormalities, which places the subject at unacceptable risk if the subject were to participate in the study or confounds the ability to interpret data from the study,
  • Prior treatment with anti-CD19 antibody therapy, adoptive T cell therapy or any prior gene therapy product (e.g. CAR T cell therapy),
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  • History of bone marrow/ hematopoietic stem cell or solid organ transplantation,
  • Any concomitant severe active infection, e.g. HIV, hepatitis B or C, SARS-CoV 2 (COVID 19), or active tuberculosis as defined by a positive Quantiferon TB-test. If presence of latent tuberculosis is established then treatment according to local guidelines must have been initiated prior to enrollment,
  • Diagnosis of severe neuropsychiatric SLE, inclusion body myositis or limited SSc,
  • Pregnant or lactating females,
  • Females who are intending to conceive during the study,
  • Known hypersensitivity to any drug components,
  • Malignancy in the last 5 years before screening,
  • Requirement for immunization with live vaccine during the study period or within 14 days preceding leukapheresis,
  • Subjects who are younger than 18 years or are incapable to understand the aim, importance and consequences of the study and to give legal informed consent,
  • Have a history of alcohol or substance abuse within the preceding 6 months that, in the opinion of the Investigator, may increase the risks associated with study participation or study agent administration, or may interfere with interpretation of results,
  • Subjects who possibly are dependent on the Sponsor, the Principal Investigator or other Investigators (e.g. family members).

Trial locations and contacts

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

Georg Schett, Prof. Dr. med. univ. contact

+49 9131 85 32093

georg.schett@uk-erlangen.de

Germany1 site, 1 recruiting
  • Universitätsklinikum Erlangen

    Erlangen, Bavaria, 91054

    Georg Schett, Prof. Dr.

    Daniela Bohr, Dr.

    Recruiting

Other trials in Germany

About this study

The investigational product is designed to effectively combat B cells in patients with autoimmune diseases. Autologous T cells enriched with CD4/CD8 are genetically engineered using a lentiviral vector to express chimeric antigen receptors (CARs) that target the CD19 antigen on the cell surface of B cells and their precursors. During treatment, patients undergo leukapheresis, lymophodepleting chemotherapy and administration of the expanded CD19-CAR-transduced T cells.

Being tested
anti-CD19 CAR T cell therapy
Medical subject headings
Lupus Erythematosus, Systemic, Scleroderma, Systemic, Dermatomyositis, Polymyositis

What participants receive

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

  • anti-CD19 CAR T cell therapyDrug

    Single-dose

Study groups in NCT06347718
Study groupRoleWhat they receive
Active doseOtherA prospective, open-label, non-randomized, single-dose interventional basket study. Single intravenous infusion of a freshly prepared advanced therapy medicinal product (ATMP) from autologous and expanded T cells transduced ex vivo with a CD19-CAR construct. No control intervention (e.g. another immunosuppressive therapy). Concomitant measures: Leukapheresis and lymphodepleting therapy for conditioning.
Receives: Drug: anti-CD19 CAR T cell therapy

What is being measured

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

  1. To assess the safety of anti-CD19 CAR T cell therapy in subjects with active B-driven autoimmune disease (SLE, SSc and DM/PM).

    Incidence and grading of severity (graded 0-4) of Cytokine Release Syndrome (CRS) and of CAR T cell-associated neurotoxicity (ICANS) within the first 4 weeks after ATMP administration.

    Measured: up to d 28

Secondary outcomes (15)
  1. Clinical efficacy SSc

    Overall Response Rate (ORR) at week 24 measured by specific disease activity composite indexes, each of them validated for the specific disease:

    SSc: No progression of interstitial lung disease with worsening of FVC1 (>10 percentage) or worsening of FVC1 (5-10 percentage) plus increase in respiratory symptoms or worsening of FVC1 (5-10 percentage) plus progression of high-resolution computed tomography changes after 24 weeks.

    Measured: at week 24

  2. Clinical efficacy SLE

    Overall Response Rate (ORR) at week 24 measured by specific disease activity composite indexes, each of them validated for the specific disease:

    SLE: Fulfillment of DORIS remission criteria of SLE at week 24.

    Measured: at week 24

  3. Clinical efficacy DM

    Overall Response Rate (ORR) at week 24 measured by specific disease activity composite indexes, each of them validated for the specific disease:

    DM: 2016 ACR/EULAR moderate or major response.

    Measured: at week 24

  4. Cellular response

    • amount of CAR T cells in the peripheral blood (cells/µl)
    • amount of B cells in the peripheral blood (cells/µl)
    • expansion of CAR T cells in the patient over time in cells/µl

    Measured: up to week 24

  5. Serological response

    Levels of respective serum autoantibodies at week 24 including incidence of sero-conversion measured in IE/ml

    • SLE: ANA-Titer, anti-dsDNA, anti-nucleosomes, anti-Sm, anti-cardiolipin IgG, C3 (mg/dl), C4 (mg/dl)
    • SSc: ANA-Titer, anti-SCL70, anti-RNA polymerase III, anti-topoisomerase
    • DM: ANA-Titer, anti-Mi2, anti-Tif1, anti-MDA5, anti-Jo1, anti-NXP2

    Measured: up to week 24

  6. Success of IMP process

    Success of the manufacturing process by GMP certification of the product (in percentage)

    Measured: up to week 24

  7. Physicians Global Assessment to measure quality of life

    Physician's Global Assessment (PhGA) of disease activity (VAS 0-100mm), (0=no disease activity, 100=worst disease activity)

    Measured: up to week 24

  8. Patient's Global Assessment to measure quality of life

    Patient's Global Assessment (PtGA) of disease activity (VAS 0-100mm), (0=no disease activity, 100=worst disease activity)

    Measured: up to week 24

  9. Health Assessment Questionnaire

    Disease Index HAQ-DI (0-4 per question; 0=best function, 4=worst function)

    Measured: up to week 24

  10. Functional Assessment of Chronic Illness Therapy

    Fatigue with FACIT Fatigue questionaire, from 8-44, (8=worst, 44=best, serious fatigue defined <30)

    Measured: up to week 24

  11. SLE-specific disease activity over time per subject

    British Isles Lupus Assessment Group (BILAG) index Improvement of organ involvement according to BILAG A-E (A=severe organ involvement, E=mild organ involvement)

    Measured: up to week 24

  12. SSc-specific disease activity over time per subject

    modified Rodnan Skin Score (mRSS) points 0-4 according to skin stiffness (0=no thickening, 3=severe thickening)

    Measured: up to week 24

  13. DM/PM-specific disease activity over time per subject

    Physician's global assessment (PhGA) of extramuscular activity 0-100mm (0=no disease activity, 100=worst disease activity)

    Measured: up to week 24

  14. SLE-specific disease activity over time per subject

    Systemic Lupus Erythematosus Disease Activity Index (SLEDAI) points 1-8 according to organ involvement 1=mild organ involvement, 8=severe organ involvement)

    Measured: up to 24 weeks

  15. DM/PM-specific disease activity over time per subject

    Manual Muscle Testing (MMT) points 0-150 (0=paraplegia, 150=full muscle strength)

    Measured: up to 24 weeks

Timeline

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

  1. First posted4 Apr 2024
  2. Study start17 Jul 2023
  3. Primary completion31 May 2026 (estimated)
  4. Study completion31 May 2026 (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
Model description
Phase 1: Evaluating the safety of CAR-T-Cells in systemic autoimmune diseases with 8 patients Phase 2: Evaluating the efficiency of CAR-T-Cells in systemic autoimmune diseases with 16 patients
Masking
None (open label)
Enrolment
24 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06347718
Sponsor's protocol ID
CASTLE
Other IDs
2022-001366-35, DRKS00032279
Acronym
CASTLE
Status last verified
Sep 2025
First submitted
15 Dec 2023
Last updated
30 Sep 2025
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Publications

  • Rius Rigau A, Xu M, Liu Z, Chenguiti Fakhouri S, Auth J, Garantziotis P, Zoli A, Selvaraju MK, Raimondo MG, Tur C, Filla T, Gehringer P, Eckstein M, Muller F, Atzinger A, Ronicke M, Ekici A, Schmid R, Wirsching A, Hagen M, Boltz S, Krickau T, Horch RE, Berking C, Grieshaber-Bouyer R, Ramming A, Gupta P, Bozec A, Mackensen A, Distler JH, Schett G, Li YN, Bergmann C. Deep phenotyping of skin tissue remodeling in patients with systemic sclerosis treated with CD19-CAR T cells. Nat Commun. 2026 May 23;17(1):4640. doi: 10.1038/s41467-026-72817-7.

    PubMed 42177178
  • Muller F, Hagen M, Wirsching A, Kharboutli S, Aigner M, Volkl S, Kretschmann S, Tascilar K, Taubmann J, Bucci L, Raimondo MG, Bergmann C, Rothe T, Corte G, Tur C, Munoz L, Boltz S, Schuster L, Hartmann F, Garantziotis P, Sporl S, Vasova I, Gerbitz A, Spriewald B, Kiener H, Giannarelli D, Locatelli F, D'Agostino MA, Hanssens L, Miltenyi S, Bozec A, Grieshaber-Bouyer R, Mackensen A, Schett G. CD19 CAR-T cells for treatment-refractory autoimmune diseases: the phase 1/2 CASTLE basket trial. Nat Med. 2026 Mar;32(3):1142-1151. doi: 10.1038/s41591-025-04185-6. Epub 2026 Jan 7.

    PubMed 41501497

Questions about this trial

What is this clinical trial studying?

A Phase 1/2 study testing anti-CD19 CAR T cell therapy in people with Systemic Lupus Erythematosus and Systemic Sclerosis, run by Miltenyi Biomedicine GmbH at 1 site in Germany.

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 24 inclusion and 17 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 30 Sep 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Germany. 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?

Contact Georg Schett, Prof. Dr. med. univ. (+49 9131 85 32093, georg.schett@uk-erlangen.de), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

To assess the safety of anti-CD19 CAR T cell therapy in subjects with active B-driven autoimmune disease (SLE, SSc and DM/PM). (time frame: up to d 28). 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 NCT06347718, 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 30 Sep 2025.

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