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MGC026

Phase 1

Advanced Solid Tumor | Antibody-Drug Conjugates (ADCs) | Oncology |MacroGenics, Inc.|Trials Updated: Oct 28, 2026

MGC026 target and mechanism

Molecular targetB7-H3
ModalityAntibody-Drug Conjugates (ADCs)

Also known as MGC026 Dose Escalation

Success Probability

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Market & Valuation

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Trial Design

CONTROLLEDDMC
Total Trials1
Total Enrollment394

FDA Designations

No designations recorded

MGC026 clinical trials

MGC026 · 1 trial · 22 indications

Phase 1 1
NCT06242470A Study of MGC026 in Participants With Advanced Solid TumorsAdvanced Solid Tumor
RECRUITING394 Analytics
PHASE1RECRUITING
A Study of MGC026 in Participants With Advanced Solid Tumors
Advanced Solid TumorUnlock trial analytics

Study Endpoints

Primary Endpoints

Number of participants with adverse events (AEs) and serious AEs (SAEs), AEs leading to dose delay, AEs leading to dose reduction, AEs leading to treatment discontinuations, AEs meeting criteria for dose limiting toxicity, and AEs of special interest.
Throughout the study, up to 135 weeks

Secondary Endpoints

Overall response rate in advanced solid tumors
Throughout the study, up to 135 weeks
Duration of response (DoR) in advanced solid tumors
Throughout the study, up to 135 weeks
ORR rate in metastatic castration resistant prostate cancer (mCRPC)
Throughout the study, up to 135 weeks
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Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Module A Cohort 1EXPERIMENTALMGC026 is a topoisomerase 1 inhibitor (TOP1i)-based ADC that targets B7-H3 administered IV every 3 weeks.
Module A Cohort 2EXPERIMENTAL -
Module A Cohort 3EXPERIMENTAL -
Module A Cohort 4EXPERIMENTAL -
Module A Cohort 5EXPERIMENTAL -
Module A Cohort 6EXPERIMENTAL -
Module A Expansion cohort 1EXPERIMENTAL -
Module A Expansion cohort 2EXPERIMENTAL -
Module A Expansion cohort 3EXPERIMENTAL -
Module A Expansion cohort 4EXPERIMENTAL -
Module A Expansion Cohort 5EXPERIMENTAL -
Module A Expansion Cohort 6EXPERIMENTAL -
Module A Expansion Cohort 7EXPERIMENTAL -
Module A Expansion Cohort 8EXPERIMENTAL -
Module B Part 1, Dose Level 1EXPERIMENTAL -
Module B Part 1, Dose Level 2EXPERIMENTALModule B Part 2, Dose Expansion

Interventions

NameTypeDescription
MGC026 Dose EscalationBIOLOGICALEscalating doses of MGC026
MGC026 Dose for ExpansionBIOLOGICALMGC026 recommended dose for expansion
PembrollizumabBIOLOGICAL200 mg, IV, every 3 weeks.
vobramitamab tavatecanBIOLOGICALless than RDE dose level, IV, every 3 weeks
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites12

Inclusion Criteria: * Adults ≥ 18 years old, able to provide informed consent * Adequate performance and laboratory parameters * Availability of archival or formalin-fixed paraffin-embedded tumor tissue sample. Participants may undergo a fresh tumor biopsy to obtain a specimen for testing if an arc...

Countries:United StatesAustraliaUnited Kingdom
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Competitive Landscape -Other Solid Tumors 10 trials (matched to "Advanced Solid Tumor")

Recent Changes (Last 90 Days)

MEDIUMOct 28, 2026NCT06242470Enrollment: 250 → 394
MEDIUMOct 28, 2026NCT06242470Enrollment: 250 → 394

Frequently asked questions about MGC026

What is MGC026 used for?

MGC026 is being studied for the treatment of advanced solid tumors. The Phase 1 trial enrolls adults with a range of advanced or metastatic cancers, including non-small cell lung cancer, small-cell lung cancer, head and neck squamous cell carcinoma, bladder cancer, melanoma, colorectal cancer, gastric cancer, pancreatic cancer, and several other tumor types.

What does MGC026 target?

MGC026 targets B7-H3, a molecule expressed across a range of solid tumors. MGC026 is a monoclonal antibody designed to bind B7-H3. Targeting B7-H3 is the mechanism under evaluation in the Phase 1 study in advanced solid tumors.

Who is developing MGC026?

MGC026 is being developed by MacroGenics, Inc., which trades on Nasdaq under the ticker MGNX. MacroGenics is the sponsor of the Phase 1 study of MGC026 in advanced solid tumors.

What phase is MGC026 in?

MGC026 is in Phase 1 clinical development. It is investigational and is being evaluated in a single recruiting Phase 1 dose escalation and expansion study in participants with advanced solid tumors. No Phase 2 or later-stage trial of MGC026 is listed.

What clinical trial is MGC026 in?

MGC026 is being studied in NCT06242470, titled A Study of MGC026 in Participants With Advanced Solid Tumors. The trial is a recruiting Phase 1 study with planned enrollment of 394 participants aged 18 years and older, open to all sexes, and conducted in the United States, Australia, and the United Kingdom.

Is MGC026 the same as MGC026 Dose Escalation?

Yes. MGC026 Dose Escalation is another name used for MGC026, referring to the dose escalation portion of its Phase 1 study in advanced solid tumors. Searches for either name refer to the same MacroGenics B7-H3 monoclonal antibody program.