Sponsor: AbbVie (industry)
Phase: 3
Start date: Nov. 8, 2024
Planned enrollment: 460
ABBV-400 (telisotuzumab adizutecan; sometimes “Temab-A”) is an investigational, c‑Met–targeting antibody–drug conjugate (ADC) being developed for multiple solid tumors. Human trials are ongoing, including a first‑in‑human phase 1 study (NCT05029882) and subsequent signal‑seeking and randomized studies across tumor types. Early clinical activity has been reported in metastatic colorectal cancer (mCRC) and in non‑small cell lung cancer (NSCLC). (ascopubs.org)
Metastatic colorectal cancer (monotherapy, phase 1; NCT05029882)
- As of the October 2023 data cut, among 122 treated patients (dose escalation plus CRC‑specific expansion), objective response rates (ORR) by dose cohort were:
- 1.6 mg/kg Q3W: 0% (n=32)
- 2.4 mg/kg Q3W: 15% (6/40)
- 3.0 mg/kg Q3W: 20% (8/41)
- Median duration of response: 4.1 months at 2.4 mg/kg and 5.5 months at 3.0 mg/kg (data immature).
- Median PFS: 5.3 months (2.4 mg/kg) and 4.5 months (3.0 mg/kg) (data immature).
- Responses were enriched at higher c‑Met expression (reported >30% ORR at efficacious doses ≥2.4 mg/kg), with some activity at lower expression levels (approximately 10–15% ORR). (ascopubs.org)
ctDNA‑based translational readouts in mCRC (phase 1; NCT05029882) - In 113 evaluable patients, confirmed ORR was 18%. Molecular response in ctDNA (≥50% decrease in circulating tumor fraction by Guardant panels) correlated with higher ORR (about 35% with molecular response vs 0–8% without) and longer PFS. (ascopubs.org)
NSCLC (phase 1; NCT05029882) - Preliminary antitumor activity has been reported in previously treated EGFR‑wild‑type, non‑squamous NSCLC, presented at ESMO 2024. (dailyreporter.esmo.org)
Planned/ongoing studies - A multicohort phase 1b “signal‑seeking” trial (NCT06084481) is enrolling across additional solid tumors (e.g., HCC, PDAC, BTC, ESCC, breast, HNSCC). (ascopubs.org) - A randomized phase 3 trial in refractory, c‑Met–overexpressing mCRC compares ABBV‑400 monotherapy to trifluridine/tipiracil plus bevacizumab (NCT06614192). A separate, large phase 2 master protocol in mCRC is evaluating combinations with FOLFOX/bevacizumab or 5‑FU/leucovorin/panitumumab (e.g., NCT06820463). (jhoonline.biomedcentral.com)
Phase 1 (mCRC cohorts; cut as of October 2023; N=122)
- Any grade ≥3 treatment‑emergent adverse event (TEAE): 64%; serious TEAEs: 41%.
- Common hematologic TEAEs: anemia 52% (grade ≥3: 30%), neutropenia 37% (≥3: 25%), leukopenia 25% (≥3: 12%), thrombocytopenia 23% (≥3: 12%).
- Common non‑hematologic TEAEs: nausea 57% (≥3: 3%), fatigue 43% (≥3: 2%), vomiting 39% (≥3: 4%).
- Diarrhea grade ≥3: <1%.
- Unadjudicated interstitial lung disease/pneumonitis: 7% (grade ≥3: 2%).
- Treatment‑related discontinuations: 9%.
Dose levels of 2.4–3.0 mg/kg Q3W showed “tolerable and manageable” profiles, with better long‑term tolerability noted at 2.4 mg/kg. The maximum tolerated dose reported for subsequent evaluations was 3.0 mg/kg Q3W. (ascopubs.org)
Preclinical/targeted toxicology - Non‑clinical studies indicated expected Topo‑1–class toxicities (bone marrow and gastrointestinal) in cynomolgus monkeys. (aacrjournals.org)
Note: ABBV‑400 remains investigational; efficacy and safety findings are preliminary and derived from early‑phase studies and meeting abstracts. Results may evolve with ongoing and future randomized trials. (ascopubs.org)
Last updated: Oct 2025
Goal: To compare the efficacy, safety, and patient-reported outcomes of ABBV-400 monotherapy versus trifluridine/tipiracil (LONSURF) plus bevacizumab in adults with c-Met over-expressed refractory metastatic colorectal cancer, and to select the optimal ABBV-400 dose for phase 3 evaluation.
Patients: Adults with refractory metastatic colorectal cancer characterized by c-Met over-expression, ECOG performance status 0–1, measurable disease by RECIST v1.1, and life expectancy ≥12 weeks. Key exclusions include prior c-MET–targeting antibodies or ADCs, hypersensitivity to bevacizumab or trifluridine/tipiracil, and active infections per protocol.
Design: Global, open-label, randomized, controlled, two-stage phase 3 study across ~160 sites in 15–20 countries, totaling ~460 participants. Stage 1 randomizes participants to two ABBV-400 dose levels to characterize safety, PK, and antitumor activity and select the optimal dose. Stage 2 randomizes participants to the optimal ABBV-400 dose versus standard of care LONSURF plus bevacizumab. Blinded independent central review is used for key efficacy endpoints.
Treatments: ABBV-400 monotherapy: ABBV-400 (telisotuzumab adizutecan) is a c-Met–targeting antibody-drug conjugate linking telisotuzumab to a cleavable topoisomerase I inhibitor payload. It selectively delivers cytotoxic payload to c-Met–overexpressing tumor cells to inhibit DNA replication. Early-phase studies in solid tumors, including colorectal cancer, showed objective response rates around 18–24% at 2.4–3.0 mg/kg, with higher responses (>35%) in tumors with higher c-Met expression; safety has been manageable but includes myelosuppression, GI toxicities, and a risk of ILD/pneumonitis, with better tolerability at 2.4 mg/kg relative to 3.0 mg/kg. Standard of care comparator: oral trifluridine/tipiracil plus IV bevacizumab, a commonly used regimen in refractory mCRC that provides disease control and survival benefit over trifluridine/tipiracil alone.
Outcomes: Primary outcomes include, in Stage 1, safety and tolerability (AEs, vital signs, ECGs, and laboratory abnormalities) and objective response by BICR; and in Stage 2, objective response by BICR and overall survival. Key secondary outcomes include PFS by BICR and investigator, OS in Stage 1, duration of response, disease control rate, and investigator-assessed ORR. Stage 1 includes extensive pharmacokinetics of ABBV-400 (Cmax, Tmax, t1/2, AUC), ADC analytes, unconjugated payload, and immunogenicity (ADA, nADA). Stage 2 includes patient-reported outcomes using EORTC QLQ-C30 domains (physical function, diarrhea, global health status/quality of life) at prespecified cycle days.
Burden on patient: Moderate to high. Participants will have frequent clinic visits for IV therapy (ABBV-400 or bevacizumab infusions) and safety monitoring, along with regular imaging per RECIST. Stage 1 adds substantial burden from intensive pharmacokinetic sampling, immunogenicity testing, and comprehensive safety labs and ECGs to support dose selection. While the SOC arm includes an oral component, the addition of bevacizumab requires infusion visits and monitoring. Overall, the schedule exceeds typical standard care due to centralized radiology review timing, serial PRO questionnaires, and expanded safety/PK assessments, particularly in Stage 1.
Last updated: Oct 2025
Inclusion Criteria:
* Life expectancy \>= 12 weeks per investigator assessment.
* Eastern Cooperative Oncology Group (ECOG) performance status (PS) of 0 or 1 during the screening period prior to the first dose of the study drug.
* Measurable disease per Response Evaluation Criteria in Solid Tumors (RECIST), version 1.1.
Exclusion Criteria:
* Prior systemic regimen containing c-MET targeting antibody or Antibody Drug Conjugate (ADC).
* History of allergic reactions or hypersensitivity to bevacizumab or any of its excipients, or to compounds similar to trifluridine/tipiracil.
* Active infection as noted in the protocol.
South Brisbane, Queensland, 4101, Australia
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Tel Aviv, 6789140, Israel
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Jerusalem, 91120, Israel
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Petah Tikva, 4941492, Israel
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Haifa, 3525408, Israel
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Tel Aviv, Tel Aviv, 6423906, Israel
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Ramat Gan, Tel Aviv, 5265601, Israel
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Nagoya, Aichi-ken, 464-8681, Japan
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Kashiwa-shi, Chiba, 277-8577, Japan
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Suita-shi, Osaka, 565-0871, Japan
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Kitaadachi-gun, Saitama, 362-0806, Japan
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Chuo-Ku, Tokyo, 104-0045, Japan
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Rio Piedras, 00935, Puerto Rico
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Seongnam-si, Gyeonggido, 13620, South Korea
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Seoul, Seoul Teugbyeolsi, 05505, South Korea
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Seoul, Seoul Teugbyeolsi, 06351, South Korea
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Seoul, Seoul Teugbyeolsi, 03080, South Korea
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Seoul, Seoul Teugbyeolsi, 03722, South Korea
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Changhua City, Changhua County, 50006, Taiwan
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Taichung, 404, Taiwan
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Kaohsiung City, 807, Taiwan
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Taoyuan, 333, Taiwan
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Tainan City, 704, Taiwan
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Taichung, 407, Taiwan
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Taipei, 112, Taiwan
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Kaohsiung City, Kaohsiung, 833, Taiwan
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Taipei City, Taipei, 100, Taiwan
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Irvine, California, 92618, United States
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Duarte, California, 91010, United States
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Los Angeles, California, 90033, United States
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Golden, Colorado, 80401, United States
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New Haven, Connecticut, 06510, United States
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Orlando, Florida, 32803, United States
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Atlanta, Georgia, 30322, United States
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Boise, Idaho, 83712, United States
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Hinsdale, Illinois, 60521, United States
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Chicago, Illinois, 60611-2927, United States
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Springfield, Illinois, 62702, United States
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Indianapolis, Indiana, 46250, United States
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Hattiesburg, Mississippi, 39401, United States
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St Louis, Missouri, 63110, United States
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Billings, Montana, 59102, United States
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New Brunswick, New Jersey, 08901, United States
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Durham, North Carolina, 27710, United States
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Chapel Hill, North Carolina, 27514, United States
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Sioux Falls, South Dakota, 57105, United States
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Germantown, Tennessee, 38138, United States
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Houston, Texas, 77030, United States
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Dallas, Texas, 75235, United States
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Charlottesville, Virginia, 22908, United States
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Houston, Texas, 77090, United States
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Status: Completed