Study to Investigate Luveltamab Tazevibulin in Adults With Advanced or Metastatic Non-small Cell Lung Cancer

August 18, 2025 updated by: Sutro Biopharma, Inc.

A Phase 2, Open-label Study Evaluating STRO-002, an Anti-folate Receptor Alpha (FOLR1) Antibody-Drug Conjugate, in Subjects With Previously Treated Advanced or Metastatic Non-small Cell Lung Cancer Expressing FOLR1

A Phase 2 study evaluating STRO-002 in subjects with previously treated advanced or metastatic non-small cell lung cancer expressing FOLR1

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Withdrawn

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

This is a multicenter, open-label study. The study is designed to assess the preliminary efficacy and safety of luveltamab tazevibulin, an anti-FOLR1 antibody drug conjugate (ADC) in previously treated subjects with advanced or metastatic NSCLC that expresses FOLR1.

Subjects will receive luveltamab tazevibulin administered intravenously every 3 weeks until disease progression, intolerable toxicity, elective withdrawal from the study, or study termination.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 2

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • United States
    • California
      • La Jolla, California, United States, 92037
        • UC San Diego Health - Moores Cancer Center
    • District of Columbia
      • Washington, District of Columbia, United States, 20057
        • Georgetown University Medical Center - Lombardi Comprehensive Cancer Center
    • Florida
      • Lake Mary, Florida, United States, 32746
        • Florida Cancer Specialists & Research Institute (FCS)
      • Tampa, Florida, United States, 33606
        • Tampa General Hospital - Cancer Center of South Florida
    • Minnesota
      • Saint Louis Park, Minnesota, United States, 55426
        • HealthPartners Frauenshuh Cancer Center
      • Saint Paul, Minnesota, United States, 55101
        • HealthPartners Cancer Center at regions Hospital
    • Texas
      • Dallas, Texas, United States, 75230
        • Mary Crowley Cancer Research

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Histologically or cytologically confirmed non-squamous/adenocarcinoma or adenosquamous NSCLC that is either unresectable Stage IIIb/c disease not amenable for definitive chemoradiation, or Stage IV.
  • Age ≥ 18 years
  • ECOG performance status 0 to 1.
  • Received at least 2 but no more than 4 prior lines of systemic therapy for advanced NSCLC
  • Disease progression during or following the most recent systemic anti-cancer therapy.
  • Positive FOLR1 expression per central testing
  • At least 1 measurable target lesion per RECIST 1.1
  • Adequate organ function

Exclusion Criteria:

  • Prior treatment with a FOLR1- targeting ADCs or with ADCs that contain a tubulin inhibitor
  • Untreated central nervous system metastases
  • Ongoing immunosuppressive therapy, except for treated brain metastases, per criterion above.
  • History of severe allergic or anaphylactic reactions to monoclonal antibody therapy or to antibody-related fusion protein treatment
  • Pre-existing clinically significant ocular disorders, severe chronic obstructive pulmonary disease or asthma, clinically significant cardiac or cerebrovascular disease, or other significant concurrent, uncontrolled medical condition
  • Previous solid organ transplantation
  • Concurrent participation in another therapeutic treatment trial

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Luveltamab tazevibulin

4.3 mg/kg q3w

Eligible subjects with stable disease (SD) may escalate to 5.2 mg/kg q3w after Cycle 4, with Sponsor approval.
Drug: Luveltamab tazevibulin
Luveltamab tazevibulin is an antibody-drug conjugate (ADC) targeting folate receptor α (FRα or FOLR1). It consists of an IgG1 antibody (SP8166) conjugated to cathepsin cleavable 3-aminophenyl hemiasterlin payload, yielding a homogenous ADC with a drug antibody ratio of four. The active warhead (SC209) inhibits tubulin polymerization leading to mitotic arrest and cell death.
Other Names:
  • STRO-002
  • luvelta

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Objective Response Rate (ORR)
Time Frame: up to 24 months
Best response of complete response (CR) or partial response (PR) per RECIST 1.1
up to 24 months

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Duration of Response (DOR) per Investigator's assessment.
Time Frame: up to 24 months
Confirmed CR or PR from the first documented response to the date of documented disease progression or death.
up to 24 months
Progression Free Survival (PFS) by RECIST v1.1 per Investigator's assessment.
Time Frame: up to 24 months
Time between the date of first dose and the first date of documented progression or death
up to 24 months
Incidence and severity of adverse events and clinical laboratory abnormalities
Time Frame: up to 24 months
Incidence and severity of adverse events (AEs) and clinical laboratory abnormalities.
up to 24 months
ADC concentration
Time Frame: up to 24 months
To evaluate the PK of luveltamab tazevibulin
up to 24 months
Total antibody concentration
Time Frame: up to 24 months
To evaluate the PK of luveltamab tazevibulin
up to 24 months
Cytotoxic warhead concentration
Time Frame: up to 24 months
To evaluate the PK of luveltamab tazevibulin
up to 24 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Sutro Biopharma, Inc.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
August 21, 2024

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
May 1, 2025

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
May 1, 2025

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
August 12, 2024

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 12, 2024

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
August 15, 2024

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
August 22, 2025

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 18, 2025

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
November 1, 2024

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • REFRaME-L1

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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