Recruiting
Phase 1

TBI-2001

Sponsor:

University Health Network, Toronto

Code:

NCT05963217

Conditions

Relapsed or Refractory CD19+ B-cell Lymphoma

Relapsed or Refractory Chronic Lymphocytic Leukemia

Relapsed or Refractory Small Lymphocytic Lymphoma

Eligibility Criteria

Sex: All

Age: 18+

Healthy Volunteers: Not accepted

Interventions

TBI-2001

Cyclophosphamide

Fludarabine

Study Details

Brief summary:

This is a Phase 1/1b, open-label, dose-escalation study to evaluate the safety and the efficacy of anti-CD19 chimeric antigen receptor (CAR) (TBI-2001) for relapsed or refractory CD19+ B-cell lymphoma Chronic Lymphocytic Leukemia (CLL), Small Lymphocytic Lymphoma (SLL).

Conditions

Relapsed or Refractory CD19+ B-cell Lymphoma

Relapsed or Refractory Chronic Lymphocytic Leukemia

Relapsed or Refractory Small Lymphocytic Lymphoma

Study ID

NCT05963217

Start date

Jul 26, 2023

Status verified date

Jun, 2026

Completion date

Jun 30, 2028

Anticipated

Primary completion date

Jun 30, 2028

Anticipated

Eligibility Criteria

Eligibility Criteria

Sex: All

Age: 18+

Healthy Volunteers: Not accepted

Inclusion Criteria:

1. Patients with histologically or cytologically confirmed CD19 positive B cell Non-Hodgkin Lymphoma (NHL), Chronic Lymphocytic Leukemia (CLL), or Small Lymphocytic Lymphoma (SLL) who have received at least 2 prior therapies.
2. Phase Ib cohort will enroll CLL/SLL patients only.
3. ECOG Performance Status 0 or 1.
4. Age ≥18 years at time of consent.
5. Life expectancy greater than 4 months.
6. For cessation of therapies prior to apheresis and lymphodepleting chemotherapy (bridging therapies), the institutional (UHN) SOPs related to Kymriah will be followed. However, an exception will be made for targeted and biological therapies that decrease circulating disease and are not expected to negatively impact successful harvest of lymphocytes by apheresis. In these cases, after discussion with and approval by the Sponsor, no washout will be required.
7. Patients must have adequate key organ function (bone marrow, heart, lung, liver, renal, etc)
8. Consent must be appropriately obtained in accordance with applicable local and regulatory requirements.
9. The treating investigator should consider the patient to have disease that is incurable, and that the patient would be a reasonable candidate for future treatment with TBI-2001 within the next 3 months

Exclusion Criteria:

1. Uncontrolled intercurrent illnesses or medical conditions that may interfere with trial participation.
2. Active or prior documented autoimmune disease within the past 2 years.
3. History of primary immunodeficiency.
4. History of organ transplant that requires use of immunosuppressive medications.
5. History hypersensitivity to components of manufacture or excipients of investigational drug.
6. Untreated central nervous system (CNS) metastases requiring concurrent treatment, inclusive of but not limited to surgery, radiation, and/or corticosteroids.
7. Other invasive malignancy within 2 years except for noninvasive malignancies
8. Current or prior use of immunosuppressive medication within 14 days before apheresis.
9. Any condition that, in the opinion of the investigator, would interfere with the evaluation of TBI-2001 or interpretation of subject safety or study results.
10. Known history of untreated active tuberculosis.
11. HIV positivity.
12. Active HTLV or syphilis infection.
13. Active hepatitis B or active hepatitis C. Subjects with a negative PCR assay for viral load for hepatitis B or C are permitted.
14. Pregnant or lactating women.
15. Received allogeneic-HSCT.
16. Any prior CD19 directed therapy.
17. Live vaccine within 28 days prior to apheresis.

Study Design

Enrollment

19 participants

Anticipated

Intervention Model

Single group

Primary purpose

Treatment

Interventions and Outcome Measures

Arms

experimental: Experimental: Dose Level 1 to 3

0.3 to 3 x 10\^6 autologous CD19-CAR-T cells/kg per patient will be administered intravenously after a conditioning chemotherapy with cyclophosphamide and fludarabine.

Interventions

TBI-2001

Phase-I portion:

cohort 1: 3×10\^5 cells/kg, cohort 2: 1×10\^6 cells/kg, cohort 3: 3×10\^6 cells/kg). Phase-Ib portion: The dose of Phase-Ib will be determined during the phase I portion.

Cyclophosphamide

IV Cyclophosphamide (for 3 days) will be administered as conditioning before cell infusion with TBI-2001.

Fludarabine

IV Fludarabine (for 3 days) will be administered as conditioning before cell infusion with TBI-2001.

Primary outcome measure

  • Safety of TBI-2001 [ Time Frame: One month ]
  • Safety of TBI-2001 [ Time Frame: One year ]
  • Safety of TBI-2001 [ Time Frame: One year ]
  • Recommended phase 2 dose (RP2D) of TBI-2001 [ Time Frame: One year ]

Central Contacts and Locations

Central contacts

Marcus Butler, M.D.

416-946-4501tip@uhn.ca

Locations

Princess Margaret Cancer Centre

Recruiting

Toronto, Ontario, Canada, M5G 2M9

Contacts

Principal Investigator:

Marcus Butler, M.D.

More Information

Sponsor

University Health Network, Toronto

Last update posted

Jun 9, 2026

Last verified

Jun, 2026

Keywords

  • CD19+ B-cell Lymphoma
  • Chronic Lymphocytic Leukemia
  • CLL
  • Small Lymphocytic Lymphoma
  • SLL
  • Lymphoma
  • TBI-2001
  • Anti-CD19 CAR Expressing T cell Therapy
  • CD19 CAR Gene-Transduced Lymphocyte
  • Adoptive Immunotherapy
  • Genetically Engineered Lymphocyte Therapy
  • Retroviral Vector
  • Neoplasms by Histologic Type
  • Neoplasms
  • Neoplasms, Experimental
  • Immune System Diseases
  • Chimeric Antigen Receptor

Trial information was received from ClinicalTrials.gov and was last updated on 2026-09-08. This information was provided to ClinicalTrials.gov by University Health Network, Toronto on 2026-06-09.