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MDX2003

Phase 1

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

Target and mechanism

Molecular targetCD19xCD20xCD3xCD28
Target classT-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

Clinical trial landscape

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 338 trials

Top 20 of 66 competitors

CompanyTickerTrialsLead PhaseDrugs
Regeneron Pharmaceuticals, Inc.REGN7PHASE3Odronextamab, Rituximab, Cyclophosphamide, Doxorubicin, Vincristine
Eli Lilly and CompanyLLY12PHASE3Pirtobrutinib, Idelalisib, Bendamustine, Rituximab
AstraZeneca PLCAZN14PHASE3Surovatamig, R-CHOP, R-CVP, BR
Merck & Co., Inc.MRK16PHASE3Nemtabrutinib, Fludarabine, Cyclophosphamide, Bendamustine, Rituximab
AbbVie, Inc.ABBV11PHASE3Venetoclax
Novartis AG Sponsored ADRNVS8PHASE3Tisagenlecleucel, Lenalidomide and rituximab in 28-day cycles for up to 12 cycles, Rituximab, cyclophosphamide, doxorubicin, vincristine and prednisone or prednisolone in 21-day cycles for 6 to 8 cycles, Lymphodepleting chemotherapy
Incyte CorporationINCY16PHASE3Tafasitamab, Lenalidomide
BeOne Medicines Ltd. Sponsored ADRONC20PHASE3BGB-16673, Bendamustine, Rituximab, Methylprednisolone, Chlorambucil
Gilead Sciences, Inc.GILD7PHASE3Axicabtagene Ciloleucel, Cyclophosphamide, Fludarabine, Lenalidomide, Rituximab
Genmab A/S Sponsored ADRGMAB18PHASE3Epcoritamab, Rituximab, Lenalidomide
Bristol-Myers Squibb CompanyBMY17PHASE3Golcadomide, Rituximab, Cyclophosphamide, Doxorubicin, Vincristine
Johnson & JohnsonJNJ11PHASE3Ibrutinib
Pfizer Inc.PFE4PHASE3Brentuximab vedotin, Rituximab, Lenalidomide
Nurix Therapeutics, Inc.NRIX6PHASE3NX-5948, Pirtobrutinib
ADC Therapeutics LtdADCT4PHASE3Loncastuximab Tesirine, Rituximab, Gemcitabine, Oxaliplatin
Corvus Pharmaceuticals, Inc.CRVS2PHASE3Soquelitinib, Belinostat, Pralatrexate
Grifols, S.A. Sponsored ADR Class BGRFS1PHASE3Xembify
HUTCHMED (China) Limited Sponsored ADRHCM2PHASE3HMPL-760, R-GemOx
Nuvalent, Inc. Class ANUVL1PHASE3Neladalkib, Alectinib
Takeda Pharmaceutical Co. Ltd. Sponsored ADRTAK6PHASE2Brentuximab Vedotin, Cyclophosphamide, Doxorubicin, Prednisone
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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?

MDX2003 is an investigational small molecule being developed for the treatment of lymphoma, including Waldenström macroglobulinemia, diffuse large B-cell lymphoma, primary mediastinal B-cell lymphoma, high-grade B-cell lymphoma, lymphoplasmacytic lymphoma, and follicular lymphoma. It is currently in Phase 1 clinical development.

What does MDX2003 target?

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

Who is developing MDX2003?

MDX2003 is being developed by Opko Health Inc., a biopharmaceutical company traded on the NASDAQ under the ticker symbol OPK. The drug is currently in Phase 1 clinical trials for the treatment of lymphoma.

What phase is MDX2003 in?

MDX2003 is in Phase 1 clinical development. It is an investigational drug and has not been approved by regulatory authorities. A Phase 1 dose escalation and dose expansion study is currently recruiting participants with various types of lymphoma.

What clinical trials is MDX2003 in?

MDX2003 is being studied in a Phase 1 clinical trial registered as NCT07249905, titled 'Dose Escalation and Dose Expansion Study of MDX2003 in Patients With Different Types of Lymphoma.' The trial is recruiting 180 participants in Australia and is open to adults aged 18 years and older.