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Advanced Solid TumorPhase 1NCT06242470

A Study of MGC026 in Participants With Advanced Solid Tumors

A Phase 1 study testing MGC026 Dose Escalation, MGC026 Dose for Expansion and Pembrollizumab in people with Advanced Solid Tumor and Advanced Cancer, run by MacroGenics at 12 sites in 3 countries.

Recruiting

Looking for participants now. Contact the study team or a site below to ask about taking part.

Sites and contacts
Official record
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Trial summary

The study is designed to understand the safety, tolerability, pharmacokinetics, immunogenicity, and preliminary antitumor activity of vobramitamab tavatecan (MGC026) in participants with relapsed or refractory, unresectable, locally advanced or metastatic solid tumors The study has a dose escalation portion and a… Read more about this study

Who is it for?
Ages 18 years and older
What is being tested?
MGC026 Dose Escalation, MGC026 Dose for Expansion and Pembrollizumab
Type of treatment
Injection or infusion
Could I receive a placebo?
No, everyone receives an active treatment
How many people
394 participants
Where
12 sitesin 3 countries
Study dates
6 Mar 2024to Apr 2029
Phase
Phase 1
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • 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 archival tumor sample is not available. Participants with no available archival tissue sample who cannot safely undergo a fresh biopsy as determined by consultation between the sponsor and investigator are eligible
  • Unresectable, locally advanced or metastatic solid tumors including: squamous cell cancer (SCC) of the head and neck, esophageal SCC, squamous and non-squamous non-small cell lung cancer, small cell lung cancer, bladder cancer, sarcoma, endometrial cancer, melanoma, castration resistant prostate cancer, breast cancer, ovarian cancer, cervical cancer, colorectal cancer gastric or gastroesophageal cancer, pancreatic carcinoma, clear cell renal cell cancer or hepatocellular cancer.
  • Measurable disease per RECIST v1.1. Participants with metastatic CRPC without measurable disease are eligible.
  • Must be willing to use highly effective methods of birth control from the time of consent through 7 months after discontinuation of MGC026.
  • Not pregnant or breastfeeding.

Who cannot join

  • Any underlying medical or psychiatric condition impairing participant's ability to receive, tolerate, or comply with the planned treatment or study procedures.
  • Another cancer that required treatment within the past 2 years, with the exception of those with low risk of cancer spreading or death such as adequately treated non melanomatous skin cancer, localized prostate cancer (Gleason Score < 6), or carcinoma in situ.
  • Patients with history of prior central nervous system (CNS) metastasis must have been treated, be asymptomatic, and not have concurrent treatment for CNS disease, progression of CNS metastases on magnetic resonance imaging, computed tomography or positron emission tomography, or history of leptomeningeal disease or cord compression at the time of enrollment.
  • Treatment with surgery, systemic cancer therapy, immunotherapy, chimeric antigen receptor-T therapy, or anti-hormonal within protocol specified intervals.
  • Prior treatment with any B7-H3 targeted agent for cancer or any ADC with a topoisomerase payload.
  • Prior autologous or allogeneic stem cell or solid organ transplant.
Show all 13Show fewer
  • Clinically significant cardiovascular, pulmonary, or gastrointestinal disorders.
  • Active viral, bacterial, or systemic fungal infection requiring parenteral treatment within 1 week of first study drug administration.
  • Known history of hepatitis B or C infection or known positive test for hepatitis B surface antigen or core antigen, or hepatitis C polymerase chain reaction.
  • Known positive testing for human immunodeficiency virus or history of acquired immune deficiency syndrome.
  • History of primary immunodeficiency.
  • Major trauma or major surgery within 4 weeks of first study drug administration.
  • Known hypersensitivity to recombinant proteins.

Trial locations and contacts

12 sites in 3 countries. Contact the study team or a site near you to ask about taking part.

Global Trial Manager contact

301-251-5172

info@macrogenics.com

12 sites in 3 countries

United States7 sites, 7 recruiting
  • START Midwest

    Grand Rapids, Michigan, 49546

    Recruiting
  • The University of Texas MD Anderson Cancer Center

    Houston, Texas, 77030

    Recruiting
  • University of Texas Health Science Center at Houston

    Houston, Texas, 77030

    Recruiting
  • START-New York Long Island

    Lake Success, New York, 11042

    Recruiting
  • The Angeles Clinic and Research Institute

    Los Angeles, California, 90025

    Recruiting
  • Providence Cancer Institute

    Portland, Oregon, 97213

    Recruiting
  • START Mountain Region

    West Valley City, Utah, 84119

    Recruiting

Other trials in United States

Australia3 sites, 3 recruiting
  • ICON Cancer Centre Wesley

    Auchenflower, Queensland, 4066

    Recruiting
  • Austin Health- Olivia Newton John Cancer Center

    Heidelberg, Victoria, 3084

    Recruiting
  • ICON Cancer Centre Kurralta Park

    Kurralta Park, South Australia, 5037

    Recruiting

Other trials in Australia

United Kingdom2 sites, 2 recruiting
  • Oxford University Hospitals NHS Foundation Trust

    Oxford, OX3 9DU

    Recruiting
  • The Royal Marsden NHS Foundation Trust

    Sutton, SM2 5PT

    Recruiting

Other trials in United Kingdom

About this study

Official title: A Phase 1/1b First-in-Human, Open Label, Dose Escalation and Cohort Expansion Study of MGC026 in Participants With Advanced Solid Tumors

The study is designed to understand the safety, tolerability, pharmacokinetics, immunogenicity, and preliminary antitumor activity of vobramitamab tavatecan (MGC026) in participants with relapsed or refractory, unresectable, locally advanced or metastatic solid tumors The study has a dose escalation portion and a cohort expansion portion in Module A of the study. Combination therapy with pembrolizumab will occur in Module B of the study Participants will receive vobramitamab tavatecan by intravenous (IV) infusion. The dose of vobramitamab tavatecan will be assigned at the time of enrollment. Pembrolizumab will be administered at 200 mg every 3 weeks. Participants may receive up to 35 treatments if there are no severe side effects and as long as the cancer does not get worse. Participants will be monitored for side effects, and progression of cancer, have blood samples collected for routing laboratory work, and blood and tumor samples collected for research purposes.

Being tested
MGC026 Dose Escalation, MGC026 Dose for Expansion, Pembrollizumab, vobramitamab tavatecan
Medical subject headings
Neoplasm Metastasis, Squamous Cell Carcinoma of Head and Neck, Carcinoma, Non-Small-Cell Lung, Small Cell Lung Carcinoma, Urinary Bladder Neoplasms, Sarcoma, Endometrial Neoplasms, Melanoma

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • MGC026 Dose EscalationBiological

    Escalating doses of MGC026

  • MGC026 Dose for ExpansionBiological

    MGC026 recommended dose for expansion

  • PembrollizumabBiological

    Also called Keytruda

    200 mg, IV, every 3 weeks.

  • vobramitamab tavatecanBiological

    less than RDE dose level, IV, every 3 weeks

Study groups in NCT06242470
Study groupRoleWhat they receive
Module A Cohort 1ExperimentalMGC026 is a topoisomerase 1 inhibitor (TOP1i)-based ADC that targets B7-H3 administered IV every 3 weeks.
Receives: Biological: MGC026 Dose Escalation
Module A Cohort 2ExperimentalNot described
Receives: Biological: MGC026 Dose Escalation
Module A Cohort 3ExperimentalNot described
Receives: Biological: MGC026 Dose Escalation
Module A Cohort 4ExperimentalNot described
Receives: Biological: MGC026 Dose Escalation
Module A Cohort 5ExperimentalNot described
Receives: Biological: MGC026 Dose Escalation
Module A Cohort 6ExperimentalNot described
Receives: Biological: MGC026 Dose Escalation
Module A Expansion cohort 1ExperimentalNot described
Receives: Biological: MGC026 Dose for Expansion
Module A Expansion cohort 2ExperimentalNot described
Receives: Biological: MGC026 Dose for Expansion
Module A Expansion cohort 3ExperimentalNot described
Receives: Biological: MGC026 Dose for Expansion
Module A Expansion cohort 4ExperimentalNot described
Receives: Biological: MGC026 Dose for Expansion
Module A Expansion Cohort 5ExperimentalNot described
Receives: Biological: MGC026 Dose for Expansion
Module A Expansion Cohort 6ExperimentalNot described
Receives: Biological: MGC026 Dose for Expansion
Module A Expansion Cohort 7ExperimentalNot described
Receives: Biological: MGC026 Dose for Expansion
Module A Expansion Cohort 8ExperimentalNot described
Receives: Biological: MGC026 Dose for Expansion
Module B Part 1, Dose Level 1ExperimentalNot described
Receives: Biological: Pembrollizumab; Biological: vobramitamab tavatecan
Module B Part 1, Dose Level 2ExperimentalModule B Part 2, Dose Expansion
Receives: Biological: MGC026 Dose for Expansion; Biological: Pembrollizumab

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. 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.

    Measured: Throughout the study, up to 135 weeks

Secondary outcomes (9)
  1. Overall response rate in advanced solid tumors

    The objective response rate (ORR) per Response Evaluation Criteria in Solid Tumors version 1.1 (RECIST 1.1) is used to estimate the proportion of participants in the Response Evaluable population who achieve best overall response of complete response (CR) or partial response (PR) (called responders).

    Complete response (CR) is defined as disappearance of all target and non-target lesions.

    Partial response (PR) is defined as at least a 30% decrease in the sum of diameters of target lesions, taking as reference the baseline sum diameters, no progression of non-target lesions, and no new lesions

    Measured: Throughout the study, up to 135 weeks

  2. Duration of response (DoR) in advanced solid tumors

    DoR is defined as the time from the date of initial response (CR or PR) to the date of first documented progression or death from any cause, whichever occurs first. (RECIST 1.1) is used to classify responses.

    Measured: Throughout the study, up to 135 weeks

  3. ORR rate in metastatic castration resistant prostate cancer (mCRPC)

    The ORR per Prostate Cancer Working Group 3 (PCWG3) criteria is estimated as the proportion of participants in the Response Evaluable population who achieve best overall response of CR or PR (called responders).

    Measured: Throughout the study, up to 135 weeks

  4. DoR in mCRPC

    DoR is defined as the time from the date of initial response (CR or PR) to the date of first documented progression, per PCWG3 criteria or death from any cause, whichever occurs first.

    Measured: Throughout the study, up to 135 weeks

  5. Mean (standard deviation [SD]) of vobramitamab tavatecan total and conjugated antibody maximum serum concentration (Cmax)

    The maximum concentration in the bloodstream at the end of the infusion.

    Measured: Cycle 1 Day 1: at baseline, end of infusion (EOI) approximately 1 hr, 4hrs after EOI, Day 2 and Day 4.

  6. Mean (standard deviation [SD]) of vobramitamab tavatecan unconjugated payload Cmax

    The maximum concentration in the bloodstream at the end of the infusion.

    Measured: Cycle 1 Day 1: at baseline, end of infusion (EOI) approximately 1 hr, 4hrs after EOI, Day 2 and Day 4.

  7. Mean (SD) of vobramitamab tavatecan total and conjugated antibody area under the time concentration curve (AUC)

    Calculated exposure to MGC026

    Measured: Cycle 1 Day 1: at baseline, EOI approximately 1 hr, 4hrs after EOI, Day 2, Day 4, Day 8, Day 15, and predose Cycle 2 Day 1

  8. Mean (SD) of vobramitamab tavatecan unconjugated payload AUC

    Calculated exposure to MGC026

    Measured: Cycle 1 Day 1: at baseline, EOI approximately 1 hr, 4hrs after EOI, Day 2, Day 4, Day 8, Day 15, and predose Cycle 2 Day 1

  9. Number of participants who develop anti-vobramitamab tavatecan antibodies (immunogenicity)

    Development of anti-MGC026 antibodies in the bloodstream

    Measured: Day 1, Day 15, and Day 1 of every 21-day cycle, throughout the study, average of 1 year.

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted5 Feb 2024
  2. Study start6 Mar 2024
  3. Primary completionOct 2028 (estimated)
  4. Study completionApr 2029 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 1
Primary purpose
Treatment
Allocation
Non-randomised
Intervention model
Sequential
Masking
None (open label)
Enrolment
394 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06242470
Sponsor's protocol ID
CP-MGC026-01
Status last verified
Oct 2026
First submitted
12 Jan 2024
Last updated
28 Oct 2026
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing MGC026 Dose Escalation, MGC026 Dose for Expansion and Pembrollizumab in people with Advanced Solid Tumor and Advanced Cancer, run by MacroGenics at 12 sites in 3 countries.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 7 inclusion and 13 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: looking for participants now, as of the sponsor's last update on 28 Oct 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 12 sites in United States, Australia, United Kingdom. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact Global Trial Manager (301-251-5172, info@macrogenics.com), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

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. (time frame: Throughout the study, up to 135 weeks). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 28 Oct 2026.

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