Study to Evaluate the Safety and Clinical Activity of UCART123 in Patients With BPDCN (ABC123)
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ClinicalTrials.gov Identifier: NCT03203369 |
Recruitment Status :
Terminated
(The trial was discontinued due to sponsor's decision and not a consequence of any safety concern.)
First Posted : June 29, 2017
Last Update Posted : July 31, 2019
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Condition or disease | Intervention/treatment | Phase |
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Blastic Plasmacytoid Dendritic Cell Neoplasm (BPDCN) | Biological: UCART123 | Phase 1 |
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 1 participants |
Allocation: | Non-Randomized |
Intervention Model: | Parallel Assignment |
Masking: | None (Open Label) |
Primary Purpose: | Treatment |
Official Title: | Phase 1, Open-label Dose-escalation and Dose-expansion Study to Evaluate the Safety, Expansion, Persistence and Clinical Activity of a Single Dose of UCART123 (Allogeneic Engineered T-cells Expressing Anti-CD123 Chimeric Antigen Receptor), Administered in Patients With Blastic Plasmacytoid Dendritic Cell Neoplasm (BPDCN) |
Actual Study Start Date : | June 28, 2017 |
Actual Primary Completion Date : | June 27, 2019 |
Actual Study Completion Date : | June 27, 2019 |

Arm | Intervention/treatment |
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Experimental: Part 1: Dose Escalation
A single intravenous administration of UCART123. Dose escalation in Part 1 will include 3 doses ranging from 6.25 x 10^5 cells/kg to 6.25 x 10^6 cells/kg and continue until the Recommended Phase 2 Dose (RP2D) is identified.
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Biological: UCART123
Allogeneic engineered T-cells expressing anti-CD123 Chimeric Antigen Receptor given as a single dose following a lymphodepleting regimen. |
Experimental: Part 2: Dose Expansion
A single intravenous administration of UCART123 at the RP2D. 2 Cohorts: Patients with Relapsed/Refractory BPDCN and Newly Diagnosed BPDCN.
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Biological: UCART123
Allogeneic engineered T-cells expressing anti-CD123 Chimeric Antigen Receptor given as a single dose following a lymphodepleting regimen. |
- Incidence, nature, and severity of adverse events and serious adverse events [ Time Frame: Through day 84 ]

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Ages Eligible for Study: | 18 Years to 80 Years (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Main Inclusion Criteria:
- Patients with a diagnosis BPDCN according to World Health Organization (WHO) classification confirmed by hematopathology;
- Eastern Cooperative Oncology Group (ECOG) Performance Status of 0 or 1;

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): NCT03203369
United States, Texas | |
MD Anderson Cancer Center | |
Houston, Texas, United States, 77030 |
Study Director: | Ioana Kloos, MD | Cellectis S.A. |
Responsible Party: | Cellectis S.A. |
ClinicalTrials.gov Identifier: | NCT03203369 |
Other Study ID Numbers: |
UCART123_02 |
First Posted: | June 29, 2017 Key Record Dates |
Last Update Posted: | July 31, 2019 |
Last Verified: | July 2019 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | Undecided |
Studies a U.S. FDA-regulated Drug Product: | Yes |
Studies a U.S. FDA-regulated Device Product: | No |
Blastic plasmacytoid dendritic cell neoplasm Natural Killer (NK) cell blastic lymphoma Hematologic malignancies Cluster of differentiation (CD) CD4+CD56+ hematodermic tumor Acute leukemia and myeloid neoplasms |
Chimeric Antigen Receptor T-cell (CAR-T) therapy Allogeneic Cluster of differentiation 4 (CD4) Cluster of differentiation 56 (CD56) |
Neoplasms |