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MDX2003

Phase 1

Lymphoma | Small molecule | Oncology |Opko Health Inc.|Trials Updated: May 4, 2026

MDX2003 development status

Highest phase Phase 1
Registered trials 1 across 1 sponsor since Nov 2025

MDX2003 target and mechanism

Molecular targetCD19xCD20xCD3xCD28
Target classTetraspecific T-cell Engager-expander
ModalitySmall molecule

Success Probability

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Market & Valuation

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Trial Design

CONTROLLED
Total Trials1
Total Enrollment180

FDA Designations

No designations recorded

MDX2003 clinical trials

MDX2003 · 1 trial · 8 indications

Phase 1 1
NCT07249905Dose Escalation and Dose Expansion Study of MDX2003 in Patients With Different Types of LymphomaLymphoma
RECRUITING180 Analytics
PHASE1RECRUITING
Dose Escalation and Dose Expansion Study of MDX2003 in Patients With Different Types of Lymphoma
LymphomaUnlock trial analytics

Study Endpoints

Primary Endpoints

Part A only- Identify the Maximum Tolerated Dose (MTD) for expansion for further development of MDX2003
28 days

Maximum Tolerated Dose is determined following the evaluation of MDX2003 safety, including the incidences of dose-limiting toxicities (DLTs), MDX2003 anti-tumor activity, and MDX2003 pharmacokinetics/pharmacodynamics.

All Study Parts: Adverse Events (AEs)
Baseline until 90 days after the participant has the last dose of MDX2003

Incidence and severity of adverse events (AEs) and serious AEs (SAEs), including changes in clinical laboratory parameters, graded according to the National Cancer Institute Common Terminology Criteria for Adverse Events (CTCAE) v5.0 or American Society for Transplantation and Cellular Therapy (ASTCT) consensus grading criteria, including changes in clinical laboratory parameters.

Part B only- Assess the preliminary anti-lymphoma activity of MDX2003
From date of enrollment until the end of treatment, up to approximately 6 months

Objective response rate is defined as the proportion of patients who achieve a complete response (CR) or partial response (PR) per Lugano Classification.

Secondary Endpoints

All Study Parts: Measure of terminal half-life (t1/2) of MDX2003
6 months
All Study Parts: Measure of area under the serum concentration-time curve (AUC) of MDX2003
6 months
All Study Parts: Measure of time to maximum concentration (Tmax) of MDX2003
6 months
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Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Dose Escalation- Part AEXPERIMENTALParticipants with B-cell malignancies will receive MDX2003 as an intravenous (IV) infusion.
Indication Optimization- Part BEXPERIMENTALParticipants with select B-cell malignancies will receive MDX2003 as an intravenous (IV) infusion.

Interventions

NameTypeDescription
MDX2003DRUGMDX2003 intravenous infusion
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Eligibility Criteria

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

Inclusion Criteria: * Participant must be ≥ 18 years of age. * Participant has a confirmed diagnosis of large B-cell lymphoma (including DLBCL, high-grade B-cell lymphoma \[HGBCL\], primary mediastinal B-cell lymphoma \[PMBCL\], etc), FL, MCL, marginal zone lymphoma, transformation of indolent B-ce...

Countries:Australia
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Competitive Landscape -Lymphoma 494 trials

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Merck & Co., Inc.MRK22PHASE3Nemtabrutinib, Zilovertamab vedotin, Pembrolizumab Berahyaluronidase alfa, Pembrolizumab, MK-1045
Eli Lilly and CompanyLLY12PHASE3Pirtobrutinib, LY4152199, LY4584180
AstraZeneca PLCAZN20PHASE3Acalabrutinib, Surovatamig, AZD0486, AZD4512, AZD5492
Novartis AG Sponsored ADRNVS9PHASE3Tisagenlecleucel, Rapcabtagene autoleucel, PIT565, Tulmimetostat
Incyte CorporationINCY16PHASE3Tafasitamab, parsaclisib, Ruxolitinib
Gilead Sciences, Inc.GILD7PHASE3Axicabtagene Ciloleucel, KITE-753, KTE-X19, KITE-197, INT2104
AbbVie, Inc.ABBV14PHASE3Venetoclax, Epcoritamab, ABBV-319, ABBV-453, ABBV-525
Genmab A/S Sponsored ADRGMAB18PHASE3Epcoritamab
Johnson & JohnsonJNJ15PHASE3Ibrutinib, Bortezomib, JNJ-90009530, JNJ-80948543, JNJ-75348780
BeOne Medicines Ltd. Sponsored ADRONC21PHASE3Tacabrutideg, Zanubrutinib, Lenalidomide, Tislelizumab, Sonrotoclax
Bristol-Myers Squibb CompanyBMY19PHASE3Golcadomide, Lenalidomide, Lisocabtagene maraleucel, Nivolumab, CC-122
Pfizer Inc.PFE4PHASE3Brentuximab vedotin, Rituximab, Axitinib, Bosutinib, Crizotinib
Nurix Therapeutics, Inc.NRIX6PHASE3NX-5948, NX-1607, NX-2127
Grifols, S.A. Sponsored ADR Class BGRFS1PHASE3Xembify
ADC Therapeutics LtdADCT3PHASE3Loncastuximab tesirine
Cellectar Biosciences, Inc.CLRB3PHASE3Iopofosine I-131
HUTCHMED (China) Limited Sponsored ADRHCM2PHASE3HMPL-760
Nuvalent, Inc. Class ANUVL1PHASE3Neladalkib
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Recent Changes (Last 90 Days)

LOWAug 1, 2026NCT07249905primaryCompletionDate: changed
LOWAug 1, 2026NCT07249905primaryCompletionDate: changed
LOWAug 1, 2026NCT07249905primaryCompletionDate: changed

Frequently asked questions about MDX2003

What is MDX2003 used for in lymphoma?

MDX2003 is an investigational small molecule being developed for the treatment of lymphoma. It is currently being studied in a Phase 1 clinical trial in patients with different types of lymphoma, including Waldenström macroglobulinemia, diffuse large B-cell lymphoma, primary mediastinal B-cell lymphoma, high-grade B-cell lymphoma, and follicular lymphoma.

What does MDX2003 target?

MDX2003 targets CD19, CD20, CD3, and CD28. It is a tetraspecific T-cell engager-expander, a type of therapy designed to engage and expand T-cells against cancer cells that express these targets.

Who is developing MDX2003?

MDX2003 is being developed by Opko Health Inc., a biopharmaceutical company. The company's stock is traded under the ticker symbol OPK.

What phase is MDX2003 in?

MDX2003 is in Phase 1 clinical development. It is an investigational drug and has not yet been approved by regulatory authorities. The drug is currently being evaluated in an early-stage clinical trial to assess its safety and dosing in patients with lymphoma.

What clinical trials is MDX2003 in?

MDX2003 is being studied in a Phase 1 clinical trial with the identifier NCT07249905. This is a dose escalation and dose expansion study in patients with different types of lymphoma. The trial is currently recruiting participants in Australia and aims to enroll approximately 180 patients.

Is MDX2003 the same as any other drug?

No alternative names for MDX2003 have been reported. The drug is identified solely by its code name MDX2003 in clinical development.