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EB103

Phase 1

B-Cell Non-Hodgkin's Lymphoma (NHL) | Monoclonal antibody | Oncology |Estrella Immunopharma, Inc.|Last Updated: Aug 7, 2025

Target and mechanism

Molecular targetCD19
ModalityMonoclonal antibody

Success Probability

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Market & Valuation

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Trial Design

UNCONTROLLEDDMC
Total Trials1
Total Enrollment21

FDA Designations

No designations recorded

Clinical trial landscape

EB103 · 1 trial · 15 indications

Phase 1 1
NCT06343311T-Cell Therapy (EB103) in Adults With Relapsed/Refractory B-Cell Non-Hodgkin's Lymphoma (NHL)B-Cell Non-Hodgkin's Lymphoma (NHL)
RECRUITING21 Analytics
PHASE1RECRUITING
T-Cell Therapy (EB103) in Adults With Relapsed/Refractory B-Cell Non-Hodgkin's Lymphoma (NHL)
B-Cell Non-Hodgkin's Lymphoma (NHL)Unlock trial analytics

Study Endpoints

Primary Endpoints

To assess the Dose Limiting Toxicities of EB103.
Time Frame: 28 days

The incidence of Dose Limiting Toxicities (DLTs) that occur within 28 days following EB103 T-cell infusion will be assessed. A DLT consists of any adverse event (AE) or abnormal laboratory value assessed as unrelated to disease, disease progression, concomitant medication, or intercurrent illness that occurs within 28 days following EB103 T-cell infusion and meets specified criteria as outline in the clinical protocol. The type, frequency, and severity of each DLT, AE, and abnormal laboratory value will be documented to assess the safety and tolerability of EB103.

Incidence rates of Treatment-Emergent Adverse Events of EB103.
Time Frame: 90 days

The type, frequency, and severity of Treatment-Emergent Adverse Events (TEAEs) will be assessed and includes an AE that starts any time from initiation of EB103 administration through and including 90 days after EB103 administration. Listing and summaries will be prepared for the following type of events: TEAEs, SAEs, Grade 3 or higher AEs, treatment related AEs (conditioning chemotherapy, protocol-mandated procedures, or EB103), and AEs leading to death. AESIs, including but not limited to acute infusion reaction, CRS, ICANS, prolonged cytopenia, TLS, MAS/HLH, SPM, and hypogammaglobulinemia.

Incidence rates Treatment-Emergent Laboratory Abnormalities reported for EB103.
Time Frame: 90 days

The type, frequency, and severity after Treatment-Emergent Laboratory Abnormalities will be assessed and includes a laboratory abnormality that, compared to baseline, worsens by at least one grade with 90 days after EB103 administration.

To determine the Recommended Phase II Dose (RP2D) of EB103.
Time Frame: 21 months

The RP2D will be determined by the study Dose Escalation Committee (DEC) and chosen based on the maximum tolerated dose (MTD) but will not exceed the MTD and the maximum administered dose (MAD). The RP2D will also be based on the manufacturing capability.

Secondary Endpoints

To assess the Overall Response Rate of EB103 in our study subject population.
Time Frame: Up to 2 years
To assess the Disease Control Rate of EB103 in our study subject population.
Time Frame: Up to 2 years
To assess the Duration of Response of EB103 in our study subject population.
Time Frame: Up to 2 years
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
EB103OTHERApproximately six (6) subjects will be treated to determine the RP2D. At the designated RP2D, approximately fifteen (15) additional subjects will be treated.

Interventions

NameTypeDescription
EB103BIOLOGICALEB103 is an autologous T-cell therapy whereby a subject's own T cells are transduced with a lentiviral vector expressing the EB103 transgene.
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites2

Inclusion Criteria: * Age 18 years or older at the time of informed consent * Histologically confirmed R/R B-cell non-Hodgkin's lymphoma (NHL) * Adequate organ function * Relapsed or refractory (R/R) disease defined as ONE OR MORE of the following: * R/R after ≥ 2 lines of systemic therapy ...

Countries:United States
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Frequently asked questions about EB103

What is EB103 used for?

EB103 is an investigational T-cell therapy being developed for adults with relapsed or refractory B-Cell Non-Hodgkin's Lymphoma (NHL). It is currently in Phase 1 clinical development and has not been approved by the FDA. The therapy is being studied in a single-arm, uncontrolled clinical trial in the United States.

What does EB103 target?

EB103 targets CD19, a protein expressed on B cells. By directing T cells against CD19-positive cells, the therapy is designed to attack malignant B cells involved in B-Cell Non-Hodgkin's Lymphoma. It is a monoclonal antibody-based T-cell therapy, though it remains investigational and is not yet approved.

Who makes EB103?

EB103 is being developed by Estrella Immunopharma, Inc., a biopharmaceutical company traded under the ticker symbol ESLA. The company is conducting a Phase 1 clinical trial of EB103 in the United States for adults with relapsed or refractory B-Cell Non-Hodgkin's Lymphoma.

What phase is EB103 in?

EB103 is in Phase 1 clinical development. It is an investigational therapy and has not received FDA approval. The ongoing Phase 1 trial is recruiting participants with relapsed or refractory B-Cell Non-Hodgkin's Lymphoma and is designed as an uncontrolled, non-randomized study.

What clinical trials is EB103 in?

EB103 is being evaluated in a single Phase 1 clinical trial registered as NCT06343311. The trial, titled "T-Cell Therapy (EB103) in Adults With Relapsed/Refractory B-Cell Non-Hodgkin's Lymphoma (NHL)," is currently recruiting in the United States with a planned enrollment of 21 participants aged 18 years and older.