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UCART20x22

Phase 1

B-cell Non-Hodgkin Lymphoma (B-NHL) | Monoclonal antibody | Oncology |Cellectis S.A.|Last Updated: Aug 24, 2025

Target and mechanism

Molecular targetCD20, CD22
Target classAntigen
ModalityMonoclonal antibody

Success Probability

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Market & Valuation

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Trial Design

UNCONTROLLEDDMC
Total Trials1
Total Enrollment80

FDA Designations

ORPHAN_DRUG

Clinical trial landscape

UCART20x22 · 1 trial · 1 indication

Phase 1 1
NCT05607420Study Evaluating UCART20x22 in B-Cell Non-Hodgkin LymphomaB-cell Non-Hodgkin Lymphoma (B-NHL)
RECRUITING80 Analytics
PHASE1RECRUITING
Study Evaluating UCART20x22 in B-Cell Non-Hodgkin Lymphoma
B-cell Non-Hodgkin Lymphoma (B-NHL)Unlock trial analytics

Study Endpoints

Primary Endpoints

Dose finding and expansion parts: Incidence of adverse events/serious adverse events/dose limiting toxicity [Safety and Tolerability]
From study entry through month 12

Incidence, nature and severity of adverse events and serious adverse events in relation to UCART20x22 and/or lymphodepletion

Dose finding part: Occurrence of Dose Limiting Toxicities (DLTs)
Up to Day 28 post UCART20x22 infusion

Secondary Endpoints

Investigator assessed overall response rate (ORR) according to Lugano Response Criteria for Malignant Lymphoma
At Day 28, Day 84, Month 6, Month 9, Month 12
Duration of Response
From achievement of the initial response to disease relapse/progression or death from any cause, assessed up to Month 12
Progression-free survival (PFS)
From the first day of any study treatment to the date of disease progression or death from any cause, whichever occurs first, assessed up to Month 12
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Dose finding partEXPERIMENTALUCART20x22 tested at several dose levels until the Maximum Tolerated Dose (MTD) and/or the Recommended Phase 2 Dose (RP2D) is identified. Dose expansion part: UCART20x22 administered at the RP2D determined during the dose finding part

Interventions

NameTypeDescription
UCART20x22BIOLOGICALAllogeneic engineered T-cells expressing anti-CD20 and anti-CD22 Chimeric Antigen Receptors given following a lymphodepletion regimen
CLLS52BIOLOGICALA monoclonal antibody that recognizes a CD52 antigen
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Eligibility Criteria

Age Range18 Years to 80 Years
SexALL
Healthy VolunteersNo
Study Sites10

Inclusion Criteria: * Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1 * Relapsed or refractory (R/R) mature B-NHL per 2016 WHO criteria and positive for CD20 and/or CD22 * Subjects with NHL subtypes defined by WHO: * Dose-Finding Part: R/R mature B-NHL (except chronic lymphoc...

Countries:United StatesFranceSpain
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Frequently asked questions about UCART20x22

What is UCART20x22 used for in B-cell Non-Hodgkin Lymphoma?

UCART20x22 is an investigational monoclonal antibody being developed for the treatment of B-cell Non-Hodgkin Lymphoma (B-NHL). It is currently in Phase 1 clinical development and has not been approved by the FDA. The drug is being studied in a single active clinical trial.

What does UCART20x22 target?

UCART20x22 targets the CD20 and CD22 antigens, which are expressed on B cells. By binding to these targets, the drug is designed to direct the immune system against malignant B cells in B-cell Non-Hodgkin Lymphoma. This dual-targeting approach is being evaluated in early-phase clinical trials.

Who makes UCART20x22?

UCART20x22 is being developed by Cellectis S.A., a biopharmaceutical company listed on the stock exchange under the ticker CLLS. The company is conducting clinical trials for this investigational therapy in patients with B-cell Non-Hodgkin Lymphoma.

What phase is UCART20x22 in?

UCART20x22 is in Phase 1 clinical development. It is an investigational drug, meaning it has not yet received FDA approval. The ongoing Phase 1 trial is recruiting participants to evaluate the safety and preliminary efficacy of UCART20x22 in B-cell Non-Hodgkin Lymphoma.

What clinical trials is UCART20x22 in?

UCART20x22 is being evaluated in one active clinical trial with the identifier NCT05607420. This Phase 1 study is recruiting 80 participants with B-cell Non-Hodgkin Lymphoma at sites in the United States, France, and Spain. The trial is open to adults aged 18 years and older.

Is UCART20x22 the same as any other drug?

UCART20x22 is a distinct investigational drug developed by Cellectis S.A. It is not known to be the same as any other approved or investigational therapy. Its unique mechanism targets both CD20 and CD22, setting it apart from single-target B-cell lymphoma treatments.