Phase 1/2 Study of UCART22 in Patients With Relapsed or Refractory CD22+ B-cell Acute Lymphoblastic Leukemia (BALLI-01)
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ClinicalTrials.gov Identifier: NCT04150497 |
Recruitment Status :
Recruiting
First Posted : November 4, 2019
Last Update Posted : September 27, 2022
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Condition or disease | Intervention/treatment | Phase |
---|---|---|
B-cell Acute Lymphoblastic Leukemia | Biological: UCART22 Biological: CLLS52 | Phase 1 |
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 40 participants |
Allocation: | N/A |
Intervention Model: | Single Group Assignment |
Masking: | None (Open Label) |
Primary Purpose: | Treatment |
Official Title: | Open Label Dose-escalation and Dose-expansion Study to Evaluate the Safety, Expansion, Persistence and Clinical Activity of UCART22 (Allogeneic Engineered T-cells Expressing Anti-CD22 Chimeric Antigen Receptor) in Patients With Relapsed or refractoryCD22+ B-cell Acute Lymphoblastic Leukemia (B-ALL) |
Actual Study Start Date : | October 14, 2019 |
Estimated Primary Completion Date : | July 31, 2023 |
Estimated Study Completion Date : | January 31, 2026 |

Arm | Intervention/treatment |
---|---|
Experimental: Dose Escalation
Several tested doses of UCART22 until the Maximum Tolerated Dose (MTD) is identified and establish Recommended Phase 2 Dose (RP2D) Dose Expansion: UCART22 administered at the RP2D |
Biological: UCART22
Allogeneic engineered T-cells expressing anti-CD22 Chimeric Antigen Receptor given following a lymphodepleting regimen Biological: CLLS52 A monoclonal antibody that recognizes a CD52 antigen
Other Name: Alemtuzumab |
- Incidence of AE/SAE/DLT [Safety and Tolerability] [ Time Frame: 24 Months ]Incidence, nature, and severity of adverse events and serious adverse events (SAEs) throughout the study in relation to UCART22 and/or lymphodepletion
- Dose escalation part: Occurrence of Dose Limiting Toxicities (DLTs) [ Time Frame: Up to D28 post initial UCART22 infusion ]
- Investigator assessed overall response rate according to the Response criteria for Acute Lymphoblastic Leukemia (ALL) [ Time Frame: At Day 28, Day 56, Day 84, Month 3, Month 6, Month 9, Month 12, Month 15, Month 18, Month 21 and Month 24 ]
- Duration of Response [ Time Frame: From the date of the initial response to the date of disease progression or death from any cause, whichever occurs first, assessed up to Month 24 ]
- Progression Free Survival [ Time Frame: From the first day of study treatment to the date of disease progression or death from any cause, whichever occurs first, assessed up to Month 24 ]
- Overall Survival [ Time Frame: From the first day of study treatment to the date of death from any cause, assessed up to Month 24 ]
- Pharmacokinetic (PK) profile/exposure levels of CLLS52 (Alemtuzumab) used during lymphodepletion [ Time Frame: Lymphodepletion to Day 56 ]

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Ages Eligible for Study: | 15 Years to 70 Years (Child, Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- B-ALL blast cells expressing CD22
- Diagnosed with R/R B-ALL
- Prior therapy must include at least one standard chemotherapy regimen and at least one salvage regimen
Exclusion Criteria:
-Prior cellular therapy or investigational cellular or gene therapy within 60 days prior to enrollment

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT04150497
Contact: Cellectis Central Contact | +1 (347) 752-4044 | clinicaltrials@cellectis.com |
United States, California | |
University of California, Los Angeles (UCLA) - Medical Center | Recruiting |
Los Angeles, California, United States, 90095 | |
United States, Illinois | |
University of Chicago | Recruiting |
Chicago, Illinois, United States, 60647 | |
United States, Massachusetts | |
Dana Farber Cancer Institute | Recruiting |
Boston, Massachusetts, United States, 02215 | |
United States, New York | |
Memorial Sloan Kettering Cancer Center (MSKCC) David H. Koch Center for Cancer Care at Memorial Sloan Kettering Cancer Center | Recruiting |
New York, New York, United States, 10021 | |
Weill Medical College of Cornell University | Withdrawn |
New York, New York, United States, 10065 | |
United States, Pennsylvania | |
Children's Hospital of Philadelphia | Recruiting |
Philadelphia, Pennsylvania, United States, 19104 | |
United States, Texas | |
MD Anderson Cancer Center | Recruiting |
Houston, Texas, United States, 77030 | |
France | |
CHU de Nantes - Hôtel-Dieu | Recruiting |
Nantes, France, 44093 | |
Hôpital Saint Louis, Unité d'Hématologie Adolescents et Jeunes Adultes Département d'Hématologie | Recruiting |
Paris, France, 75010 | |
Hôpital Robert Debré - Service d'hémato-immunologie | Recruiting |
Paris, France, 75019 | |
CHU Rennes - Hopital Pontchaillou | Recruiting |
Rennes, France, 35033 |
Principal Investigator: | Nitin Jain, MD | M.D. Anderson Cancer Center |
Responsible Party: | Cellectis S.A. |
ClinicalTrials.gov Identifier: | NCT04150497 |
Other Study ID Numbers: |
UCART22_01 |
First Posted: | November 4, 2019 Key Record Dates |
Last Update Posted: | September 27, 2022 |
Last Verified: | September 2022 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
Studies a U.S. FDA-regulated Drug Product: | Yes |
Studies a U.S. FDA-regulated Device Product: | No |
B-cell Acute Lymphoblastic Leukemia (B-ALL) Relapse/Refractory B-ALL Universal Chimeric Antigen Receptor T-Cell (UCAR-T) Therapy Allogeneic Transcription Activator-Like Effector Nuclease (TALEN®) |
Leukemia Precursor Cell Lymphoblastic Leukemia-Lymphoma Leukemia, Lymphoid Neoplasms by Histologic Type Neoplasms Lymphoproliferative Disorders |
Lymphatic Diseases Immunoproliferative Disorders Immune System Diseases Alemtuzumab Antineoplastic Agents, Immunological Antineoplastic Agents |