A Study to Evaluate TROP2 ADC LCB84 Single Agent and in Combination With an Anti-PD-1 Ab in Advanced Solid Tumors

NCT ID: NCT05941507

Last Updated: 2025-09-24

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

PHASE1/PHASE2

Total Enrollment

300 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-10-05

Study Completion Date

2027-05-31

Brief Summary

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This is a first-in-human, Phase 1/2 study to evaluate LCB84, a TROP2-directed antibody-drug conjugate, alone and in combination with an anti-PD-1 Ab, in dose escalation (Phase 1) followed by dose expansion (Phase 2).

The study population in dose escalation (Phase 1) consists of patients with advanced solid tumors refractory to standard of care, or for whom no standard of care exists. After the MTD and/or RP2D for single agent LCB84 is determined, dose escalation cohorts with select tumor types will be enrolled. Combination LCB84 and anti-PD-1 Ab will be evaluated in dose escalation after a minimum of 2 dose levels of single agent LCB84 have established DLT safety, to determine the MTD and/or RP2D of combination LCB84 and anti-PD-1 Ab, and to continue into dose expansion cohorts in select tumor types.

Detailed Description

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Conditions

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Advanced Solid Tumors

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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LCB84 monotherapy

IV infusion Q3W

Group Type EXPERIMENTAL

LCB84

Intervention Type DRUG

TROP2-directed human monoclonal antibody (Ab) linked to a monomethyl auristatin E (MMAE) prodrug

LCB84 + anti-PD-1

IV infusion Q3W

Group Type EXPERIMENTAL

LCB84

Intervention Type DRUG

TROP2-directed human monoclonal antibody (Ab) linked to a monomethyl auristatin E (MMAE) prodrug

Anti-PD-1 monoclonal antibody

Intervention Type DRUG

anti-PD-1 Ab

Interventions

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LCB84

TROP2-directed human monoclonal antibody (Ab) linked to a monomethyl auristatin E (MMAE) prodrug

Intervention Type DRUG

Anti-PD-1 monoclonal antibody

anti-PD-1 Ab

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* Phase 1 Dose Escalation: histologically or cytologically confirmed advanced solid tumors refractory to standard of care treatment.
* Phase 2 Dose Expansion\*: select histologically or cytologically confirmed advanced solid tumors refractory to standard of care treatment.

\*expansion cohort indications to be prioritized based on data from Phase 1 dose escalation.
* Prior treatment with TROP2-directed therapy is permitted.
* Measurable disease as defined by RECIST v1.1 or RANO-BM.
* Willingness to provide archival tumor tissue when available or to undergo pre-treatment biopsy if not available.
* Mandatory pre- and on-treatment biopsies for enrichment cohorts in Phase 1 dose escalation and Phase 2 expansion cohorts if deemed medically feasible and safe.
* Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1
* Adequate organ function as defined by:

* Absolute neutrophil count (ANC) ≥1.5 x 109/L (1500/µL), without colony-stimulating factor support for the past 14 days
* Platelets ≥100.0 x 109/L (100 000/µL)
* Hemoglobin ≥9.0 g/dL
* Aspartate aminotransferase (AST) ≤2.5 x ULN; alanine aminotransferase (ALT) ≤2.5 x ULN (AST, ALT ≤5 x ULN if liver metastases present)

Exclusion Criteria

* Active or progressing central nervous system (CNS) metastases or any evidence of leptomeningeal disease.

Note: Patients with stable or treated CNS metastases may be eligible if all of the following criteria are met: 1) localized treatment for brain metastases completed at least 4 weeks prior to the first dose of study drug 2) no new or progressive neurologic symptoms and without need for immediate local therapy, steroids or anticonvulsants for symptom control (stable or decreasing steroid dose (a stable dose of ≤4 mg dexamethasone oral or equivalent) is permitted) 3) stable brain metastases for at least 1 month prior to screening (baseline) brain MRI.

* Persistent toxicities from previous systemic antineoplastic treatments \>Grade 1, excluding alopecia and vitiligo.
* Systemic antineoplastic therapy (including antiestrogen therapy) within 5 half-lives or 4 weeks, whichever is shorter, prior to first dose of the study drug.
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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AntibodyChem Biosciences, Inc.

UNKNOWN

Sponsor Role collaborator

LigaChem Biosciences, Inc.

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Rodrigo Ruiz-Soto, MD

Role: STUDY_DIRECTOR

AntibodyChem Biosciences

Locations

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Cedars Sinai Medical Center

Los Angeles, California, United States

Site Status RECRUITING

Dana Farber Cancer Institute

Boston, Massachusetts, United States

Site Status RECRUITING

University of Michigan

Ann Arbor, Michigan, United States

Site Status RECRUITING

Tennessee Oncology

Nashville, Tennessee, United States

Site Status NOT_YET_RECRUITING

Mary Crowley Cancer Research

Dallas, Texas, United States

Site Status RECRUITING

University of Texas Southwestern Medical Center

Dallas, Texas, United States

Site Status NOT_YET_RECRUITING

MD Anderson Cancer Center

Houston, Texas, United States

Site Status RECRUITING

Princess Margaret Cancer Centre

Toronto, Ontario, Canada

Site Status RECRUITING

Countries

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United States Canada

Central Contacts

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David Browning

Role: CONTACT

+1-615-975-7776

Facility Contacts

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DFCI External Referral

Role: primary

Cancer Answer Line

Role: primary

1-800-865-1125

Douglas Orr, MD

Role: primary

972-566-3000

Anjali Raina

Role: primary

713-792-3238

Study Coordinator

Role: primary

416 946 4501 x 4737

Other Identifiers

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LCB84-1001

Identifier Type: -

Identifier Source: org_study_id

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