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TTX-MC138

Monoclonal antibody · Antagonist of HER2 (ERBB2) · developed by TransCode Therapeutics

Phase 1/2 Most advanced trial
RNAZ Developer
2 Registered trials

What is TTX-MC138?

TTX-MC138 is an antibody targeting HER2. It is being studied in HER2-positive and HER2-negative breast cancers, triple-negative breast cancer, colorectal cancer, and other solid tumors as interception therapy.

Summary written with AI from the sources listed at the end of this page.

At a glance

Drug type
Monoclonal antibody
Targets
HER2 (ERBB2)
Mechanism
Antagonist of HER2 (ERBB2)
Therapy area
Oncology
Developer
TransCode Therapeutics (RNAZ)
Also in trials of
JAZZ
FDA status
Investigational, not approved in the US. Most advanced trial: Phase 1/2

🧪 Clinical trials

TrialPhaseConditionStatusSponsor
NCT06260774 Phase 1/2 Advanced Solid Tumor Active not recruiting RNAZ
NCT05868226 Phase 1/2 HER2-positive Breast Cancer Recruiting JAZZ

Trials of the companies BioRadar tracks, from ClinicalTrials.gov, most advanced phase first.

Conditions studied

Estrogen Receptor Positive TumorHER-2 Protein OverexpressionHER2 Mutation-Related TumorsHER2-negative Breast CancerHER2-positive Breast CancerHER2-positive Metastatic Breast CancerHormone Receptor Negative Breast CarcinomaHormone Receptor-positive Breast CancerHR PositiveMetastaticMetastatic Breast CancerMetastatic CancerProgesterone Receptor-positive Breast CancerSolid Tumor

Other drugs acting on ERBB2

More from TransCode Therapeutics

Sources

Updated Oct 3, 2026. Something wrong or missing? Report it on the RNAZ page.

Follow RNAZ, the company behind TTX-MC138

See RNAZ's upcoming FDA decisions, trial readouts, cash runway and dilution risk, updated every day from SEC, FDA and ClinicalTrials.gov filings.

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Data: FDA (Drugs@FDA, Purple Book, DailyMed), NIH (NCI Thesaurus, GSRS, RxNorm), ClinicalTrials.gov • Informational purposes only, not medical or investment advice. • All drugs A–Z

This data is for informational purposes only, not investment advice. BioRadar does not provide buy/sell recommendations. Past performance does not guarantee future results. Always do your own due diligence.