Last updated: October 21, 2026
Telisotuzumab adizutecan (Temab-A, ABBV-400) is AbbVie's next-generation c-Met-directed antibody-drug conjugate (ADC). It reuses telisotuzumab — the humanized bivalent IgG1 anti-c-Met antibody of the FDA-approved Emrelis (telisotuzumab vedotin) — but swaps Emrelis's microtubule-inhibitor MMAE payload for a topoisomerase 1 inhibitor (Top1i) on AbbVie's adizutecan linker-payload platform. It is being developed across solid tumors in the AndroMETa program: colorectal, non-small cell lung, pancreatic and pancreatobiliary, head and neck, gastroesophageal, hepatocellular, and MET-amplified tumors.
Mechanism of action:The antibody binds c-Met (the MET receptor tyrosine kinase, the receptor for hepatocyte growth factor), a protein overexpressed in many carcinomas and linked to progression and treatment resistance. After binding, the ADC is internalized, the cleavable valine-alanine linker is cut by lysosomal proteases, and the released Top1i payload traps topoisomerase 1 on DNA, causing double-strand breaks during replication and apoptosis. Like other Top1i payloads (deruxtecan in Enhertu and Datroway, SN-38 in Trodelvy), the payload is membrane-permeable and exerts a bystander effect on neighboring tumor cells, so activity does not require every cell to express c-Met.
Regulatory status:Not FDA-approved. On October 7, 2026 the FDA granted telisotuzumab adizutecan its first two Breakthrough Therapy Designations: (1) in combination with bevacizumab for refractory metastatic colorectal cancer after fluoropyrimidine, irinotecan, oxaliplatin, anti-VEGF and (if indicated) anti-EGFR therapy; and (2) as monotherapy for previously treated, EGFR wild-type, c-Met protein-expressing non-squamous NSCLC after platinum chemotherapy and an anti-PD-(L)1 antibody. A Breakthrough Therapy Designation expedites FDA interaction and review on the basis of preliminary clinical evidence — it is not an approval, and the confirmatory Phase 3 trials have not read out. Access today is through clinical trials only.
c-Met has been a frustrating target for a long time. The MET pathway is switched on in a large share of colorectal, lung, gastric, pancreatic and head and neck cancers, but a decade of MET-blocking antibodies and kinase inhibitors in unselected patients mostly failed, and the one group that clearly benefits from MET kinase inhibitors is the small population whose tumors carry MET exon 14 skipping mutations (capmatinib, tepotinib). An ADC changes the logic: it does not need to shut down MET signaling — it only needs c-Met to be present on the cell surface as an address for delivering chemotherapy. That is why the first c-Met ADC, Emrelis, could win FDA accelerated approval (May 2025) in c-Met-overexpressing NSCLC where MET inhibitors never did.
Telisotuzumab adizutecan is the second-generation version of that idea. Replacing Emrelis's MMAE payload with a topoisomerase 1 inhibitor matters for two reasons. First, Top1i payloads are the chemistry behind the most successful ADCs of the past five years (Enhertu, Datroway, Trodelvy) and have a bystander effect that MMAE largely lacks, which may let the drug work in tumors with patchy or moderate c-Met expression. Second, the payload class changes the side-effect profile: away from the peripheral neuropathy and eye toxicity of MMAE and toward the nausea, fatigue and low blood counts — plus a monitored interstitial lung disease risk — of Top1i ADCs.
The two Breakthrough Therapy Designations point to where the drug may land first. The colorectal designation targets patients whose cancer has already progressed through every standard chemotherapy and antibody — a setting where the current options (LONSURF plus bevacizumab, regorafenib) add months, not years. The NSCLC designation targets patients without an EGFR mutation whose cancer has progressed after platinum chemotherapy and immunotherapy, where docetaxel has been the default for twenty years. Honest framing: the designations rest on early-phase data, principally the first-in-human study (NCT05029882) and the AndroMETa Phase 2 dose-optimization trials, which have not been peer-reviewed in full; the randomized Phase 3 trials that will decide whether telisotuzumab adizutecan actually extends survival are either recruiting now (colorectal) or about to open (NSCLC). This page does not quote response rates from those early studies because they are interim and dose-dependent.
Telisotuzumab adizutecan has 0 FDA approvals and 2 Breakthrough Therapy Designations (both granted October 7, 2026). For comparison, its MMAE-payload sibling Emrelis (telisotuzumab vedotin) has 1 accelerated approval (May 14, 2025, c-Met-overexpressing NSCLC).
1. Breakthrough Therapy Designation — Refractory Metastatic Colorectal Cancer, with Bevacizumab (October 7, 2026)
2. Breakthrough Therapy Designation — Previously Treated EGFR Wild-Type, c-Met-Expressing Non-Squamous NSCLC, Monotherapy (October 7, 2026)
★ Breakthrough Therapy Designation Is Not Approval — What Changes and What Does Not
A Breakthrough Therapy Designation (BTD) is an FDA process status. It is granted when preliminary clinical evidence indicates a drug may demonstrate substantial improvement over available therapy on a clinically significant endpoint. The sponsor receives intensive FDA guidance on trial design, organizational commitment from senior reviewers, rolling review, and eligibility for priority review. It frequently precedes an accelerated approval based on response rate, with full approval contingent on a confirmatory Phase 3.
What does not change: the drug is not available by prescription, insurers do not cover it, and no survival benefit has been demonstrated. Patients and families reading "FDA Breakthrough" headlines should understand that the practical route to telisotuzumab adizutecan in late 2026 is enrollment in one of the AndroMETa trials listed below, or, where offered, an expanded-access program through the sponsor and treating oncologist.
What the two designations do tell you is where AbbVie and the FDA believe the signal is strongest: refractory colorectal cancer in combination with bevacizumab, and EGFR wild-type c-Met-expressing NSCLC after chemotherapy and immunotherapy. If you are in either of those situations, the Phase 3 trials for those populations are the most directly relevant studies on this page.
All 12 recruiting interventional telisotuzumab adizutecan / ABBV-400 trials on ClinicalTrials.gov as of October 21, 2026, each verified in the ClinTrialFinder corpus. Grouped by clinical setting and ordered by phase. All are sponsored by AbbVie unless noted.
Showing all 12 recruiting interventional telisotuzumab adizutecan / ABBV-400 trials as of October 21, 2026 (ClinicalTrials.gov term search "telisotuzumab adizutecan OR ABBV-400", recruiting + interventional = 12). For the latest list: view all recruiting telisotuzumab adizutecan trials on ClinicalTrials.gov.
Target: c-Met (MET receptor tyrosine kinase; hepatocyte growth factor receptor) — a transmembrane receptor expressed at low levels on normal epithelium and overexpressed in a large fraction of colorectal, non-small cell lung, gastric / gastroesophageal, pancreatic, hepatocellular, and head and neck cancers. Binding of its ligand HGF drives proliferation, invasion and survival signaling, and MET activation is a well-documented resistance mechanism to EGFR inhibitors in lung and colorectal cancer. For an ADC, what matters is not MET signaling but surface protein density: more c-Met per cell means more ADC internalized and more payload delivered. c-Met protein is measured by immunohistochemistry (IHC) on tumor tissue; AbbVie's trials define expression cutoffs in each protocol.
Antibody: telisotuzumab, a humanized bivalent IgG1 monoclonal antibody that binds c-Met with high affinity and is internalized efficiently — the same antibody that carries MMAE in Emrelis (telisotuzumab vedotin, ABBV-399). Reusing a clinically validated antibody de-risked the second-generation ADC: the question in AndroMETa is about the payload, not the targeting.
Linker-payload — the adizutecan platform: a topoisomerase 1 inhibitor (Top1i) attached through a cleavable valine-alanine dipeptide linker with a stable bromoacetamide attachment to the antibody. After c-Met-mediated internalization, lysosomal proteases cleave the dipeptide and release free payload, which stabilizes the topoisomerase 1–DNA complex, causes DNA double-strand breaks in replicating cells, and triggers apoptosis. The released payload is membrane-permeable, producing a bystander effect on adjacent c-Met-low tumor cells — the property that lets Top1i ADCs work in heterogeneous tumors.
How it compares with other Top1i ADCs: telisotuzumab adizutecan belongs to the same payload class as the deruxtecan (DXd) platform behind Enhertu (T-DXd), Datroway (Dato-DXd) and patritumab deruxtecan, and the SN-38 payload of Trodelvy — but with a different target (c-Met rather than HER2, TROP2 or HER3) and a different proprietary linker and payload chemistry. The practical consequence is a shared class toxicity profile (nausea, cytopenias, interstitial lung disease risk) and an open question about cross-resistance: whether tumors that progressed on one Top1i ADC remain sensitive to another with a different target. See the HER2 ADC hub and TROP2 ADC hub for the sibling platforms.
Three different MET abnormalities appear in trial eligibility criteria, and they are not interchangeable. Knowing which one your tumor has (or has been tested for) decides which telisotuzumab adizutecan trials — and which other MET drugs — are relevant:
In practice: if you have colorectal cancer, ask whether c-Met IHC has been or can be run on your archival tissue (several AndroMETa colorectal trials select or stratify on it). If you have EGFR-mutant NSCLC progressing on osimertinib, ask for NGS or FISH for MET amplification — it opens both the telisotuzumab adizutecan trials and other MET-directed combinations. If you have EGFR wild-type NSCLC after chemo-immunotherapy, c-Met IHC is the relevant test, and the same result also determines Emrelis eligibility. See the NSCLC trials page and the Colorectal Cancer trials page for the broader biomarker-defined landscapes.
Because the drug is investigational, "fit" today means which trial population you match. The notes below describe the standard-of-care context of each setting so you can judge what the trial comparator represents.
⚠ Investigational Drug — No FDA Label, Safety Profile Still Being Defined
Telisotuzumab adizutecan has no FDA prescribing information. Its adverse-event profile is being characterized in the first-in-human study (NCT05029882), the Phase 2 dose-optimization trials, and the recruiting Phase 2/3 and Phase 3 trials. The information in this section describes the toxicity class of topoisomerase 1 inhibitor ADCs and known on-target effects of c-Met antibodies; it is not a list of verified incidence rates for this drug. Trial participants receive the current investigator's brochure summary from the study team, which supersedes anything here.
Interstitial lung disease (ILD) / pneumonitis is a recognized class risk for Top1i-payload ADCs (it carries a boxed warning on Enhertu and Datroway) and is monitored in AndroMETa protocols with baseline imaging, exclusion of patients with significant prior ILD, and dose hold or discontinuation rules. Report any new cough, shortness of breath or fever to the study team immediately.
Emrelis's label warnings — peripheral neuropathy, ocular surface disorders, and infusion-related reactions — are largely driven by its MMAE payload and are not expected to carry over at the same magnitude to a Top1i-payload ADC, although infusion reactions can occur with any antibody. Conversely, Emrelis has a lower ILD signal than Top1i ADCs. Because the antibody is shared, on-target effects of c-Met binding on normal epithelium (for example, edema or hypoalbuminemia reported with some c-Met antibodies) may be common to both; these are being characterized in the trials.
What is telisotuzumab adizutecan (Temab-A, ABBV-400)?
Telisotuzumab adizutecan (Temab-A; development code ABBV-400) is an investigational antibody-drug conjugate (ADC) from AbbVie that targets the c-Met protein (the MET receptor tyrosine kinase, also called the hepatocyte growth factor receptor), which is overexpressed in many solid tumors including colorectal, lung, gastric, pancreatic and head and neck cancers. It pairs telisotuzumab — the same humanized bivalent IgG1 anti-c-Met antibody used in the FDA-approved Emrelis (telisotuzumab vedotin) — with a topoisomerase 1 inhibitor (Top1i) payload attached via a cleavable valine-alanine linker on AbbVie's adizutecan platform, replacing the microtubule-inhibitor MMAE payload of Emrelis. Once the ADC binds c-Met and is internalized, the linker is cleaved and the Top1i payload damages tumor DNA during replication. Telisotuzumab adizutecan is being studied in AbbVie's AndroMETa program across colorectal, non-small cell lung, pancreatic, pancreatobiliary, head and neck and other solid tumors. As of October 2026 it has 12 recruiting interventional trials on ClinicalTrials.gov and is not yet FDA-approved.
Is telisotuzumab adizutecan FDA-approved? What do the two Breakthrough Therapy Designations mean?
No. Telisotuzumab adizutecan is not FDA-approved for any indication as of October 2026. On October 7, 2026 the FDA granted it two Breakthrough Therapy Designations (BTDs), its first: (1) in combination with bevacizumab for adults with refractory metastatic colorectal cancer previously treated with fluoropyrimidine, irinotecan, oxaliplatin, an anti-VEGF monoclonal antibody and, if indicated, an anti-EGFR monoclonal antibody; and (2) as monotherapy for adults with locally advanced or metastatic EGFR wild-type, c-Met protein-expressing, non-squamous NSCLC previously treated with platinum-based chemotherapy and an anti-PD-(L)1 antibody. A BTD means the FDA considers preliminary clinical evidence to show the drug may offer substantial improvement over available therapy on a clinically significant endpoint, and it commits the agency to intensive guidance and expedited review. It does not mean the drug is approved, available outside trials, or proven to extend survival — the confirmatory Phase 3 trials (NCT07525206 in colorectal cancer versus LONSURF plus bevacizumab; NCT07821684 in NSCLC versus docetaxel or ramucirumab) have not read out. For patients today, access is through a clinical trial.
How does telisotuzumab adizutecan differ from Emrelis (telisotuzumab vedotin)?
Both drugs use the same anti-c-Met antibody (telisotuzumab) but carry different payloads, which changes both their anticancer activity and their side-effect profile. Emrelis (telisotuzumab vedotin-tllv, ABBV-399) carries monomethyl auristatin E (MMAE), a microtubule inhibitor, and received FDA accelerated approval on May 14, 2025 for previously treated, locally advanced or metastatic non-squamous NSCLC with high c-Met protein overexpression, based on the LUMINOSITY trial. MMAE-payload ADCs characteristically cause peripheral neuropathy and ocular toxicity. Telisotuzumab adizutecan replaces MMAE with a topoisomerase 1 inhibitor (Top1i) payload on a cleavable valine-alanine linker — the same payload class as the deruxtecan (DXd) used in Enhertu and Datroway and the SN-38 used in Trodelvy. Top1i payloads act on DNA rather than microtubules, exert a bystander effect on neighboring tumor cells, and carry a different toxicity profile dominated by nausea, fatigue and cytopenias, with interstitial lung disease a class risk to monitor. Clinically, the two drugs are being developed in different populations: Emrelis is approved in high-c-Met NSCLC, whereas telisotuzumab adizutecan's Breakthrough Therapy Designations cover refractory metastatic colorectal cancer (with bevacizumab) and previously treated EGFR wild-type c-Met-expressing NSCLC, and it is also in Phase 2/3 trials in pancreatic cancer and EGFR-mutant NSCLC.
Who might be a candidate for a telisotuzumab adizutecan clinical trial?
The recruiting AndroMETa trials enroll several distinct patient groups, each with its own eligibility rules — ask your oncologist which, if any, fits your situation. (1) Refractory metastatic colorectal cancer after fluoropyrimidine, oxaliplatin, irinotecan and anti-VEGF (and anti-EGFR if RAS wild-type) therapy: the global Phase 3 NCT07525206 randomizes telisotuzumab adizutecan plus bevacizumab against LONSURF plus bevacizumab; a Phase 2 master protocol (NCT06820463) tests combinations with FOLFOX, bevacizumab and panitumumab. (2) Colorectal cancer that is ctDNA-positive after adjuvant therapy with no visible disease on scans: Phase 2 NCT07023289. (3) EGFR-mutant non-squamous NSCLC: first-line with osimertinib (NCT07005102) or after progression on a third-generation EGFR TKI such as osimertinib (NCT07155187, AndroMETa-Lung-713). (4) Non-squamous NSCLC without actionable mutations, first-line, with a PD-1 inhibitor (NCT06772623). (5) Newly diagnosed metastatic pancreatic ductal adenocarcinoma, first-line with FOLFOX (NCT07490301, AndroMETa-PDAC-288) or with gemcitabine/nab-paclitaxel in pancreatobiliary cancers (NCT07769502). (6) Recurrent or metastatic head and neck squamous cell carcinoma, first-line with pembrolizumab (NCT07744126). (7) Any locally advanced or metastatic solid tumor with MET amplification, age 12 or older (NCT07196644). Most trials require measurable disease, adequate organ function and no significant interstitial lung disease; several select or stratify on c-Met protein expression by immunohistochemistry, so tumor tissue may be needed.
What side effects are expected with telisotuzumab adizutecan?
Because telisotuzumab adizutecan has no FDA label, its safety profile is still being defined in the Phase 1 and Phase 2/3 trials; the information here describes the toxicity class of a topoisomerase 1 inhibitor (Top1i) ADC, not verified per-patient percentages for this drug. Top1i-payload ADCs (the same payload class as Enhertu, Datroway and Trodelvy) typically cause nausea, vomiting, decreased appetite, fatigue, diarrhea, and cytopenias (anemia, neutropenia, thrombocytopenia) from payload released into the circulation, and interstitial lung disease / pneumonitis is a monitored class risk that trial protocols screen for and manage with dose holds. The microtubule-inhibitor toxicities of Emrelis (peripheral neuropathy, ocular surface effects) are not expected to carry over because the payload is different, although on-target effects of the shared anti-c-Met antibody — c-Met is expressed on normal epithelium — may be shared. Trial participants are monitored with regular blood counts, liver tests and symptom checks, and should report new cough, shortness of breath or fever promptly. Ask the trial team for the current investigator's brochure summary of adverse events observed to date.
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