NCT07099898 · GlaxoSmithKline
A Study of GSK5764227 in Participants With Relapsed Small Cell Lung Cancer (SCLC)
What this study is about
In this study researchers are testing Risvutatug rezetecan also known as (Ris-Rez) a new medicine that targets specific proteins (B7-H3) on cancer cells, thereby reducing the cancer's ability to grow and spread.
View original scientific description
In this study researchers are testing Risvutatug rezetecan also known as (Ris-Rez) a new medicine that targets specific proteins (B7-H3) on cancer cells, thereby reducing the cancer's ability to grow and spread. This study specifically aims to evaluate how well Ris-Rez works in treating relapsed SCLC compared to standard treatment topotecan, by checking whether Ris-Rez makes cancers smaller or disappear completely and if it helps participants live longer. The study is also assessing whether Ris-Rez is safe and tolerated well by participants compared to topotecan and provide a better understanding of the main side effects of both drugs. Participants with relapsed SCLC will be randomly divided into two groups: one group receiving Ris-Rez and the other receiving topotecan.
Interventions
BIOLOGICAL
Ris-Rez
Ris-Rez will be administered
DRUG
Topotecan
Topotecan will be administered
Primary outcome measures
Overall Survival (OS)
Time frame: Up to approximately 113 weeks
OS is defined as the time from the date of randomization to the date of death by any cause
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Participants are eligible to be included in the study only if all of the following criteria apply:
- Adults \>18 or the minimum legal adult age at the time the informed consent form is signed
- Has histologically or cytologically confirmed extensive-stage small cell lung cancer (ES-SCLC).
- Has received 1 prior platinum-based systemic therapy with a PD- (L)1 inhibitor for at least 2 cycles of therapy and a chemotherapy free-interval of \>30 days, with documented progression. Participants with prior tarlatamab treatment in either the first- or second-line ES-SCLC setting are eligible.
- Has at least 1 target lesion per RECIST 1.1, as determined by the investigator.
- Is capable of giving signed informed consent, including compliance with the requirements and restrictions listed in the ICF and in the protocol.
- Has adequate organ function and an ECOG performance status of 0 or 1
Exclusion criteria
- Participants are excluded from the study if any of the following criteria apply:
- Pathological diagnosis of complex SCLC or transformed SCLC.
- Limited stage small cell lung cancer at diagnosis
- Has received any prior therapy with an Antibody-drug conjugate (ADC) with a Topoisomerase-1 (TOPO1)-inhibitor payload or treatments targeting B7-H3.
- Has known sensitivity to study intervention components or excipients or other allergy that, in the opinion of the investigator or medical monitor, contraindicates participation in the study.
- Has severe, uncontrolled or active cardiovascular disorders.
- Has clinically significant bleeding symptoms or significant bleeding tendency within 1 month prior to the first dose.
- Known active infectious diseases requiring systemic treatment or known Human immunodeficiency virus (HIV).
- Has symptomatic brain metastases or untreated progression exclusively due to brain metastasis during or after the last treatment prior to screening, evidence of leptomeningeal/meningeal/brainstem metastasis or evidence of spinal cord metastases.
- Has any evidence of current interstitial lung disease or pneumonitis or a prior history of ILD or non-infectious pneumonitis requiring high dose steroids.
- Has significant pulmonary disease or respiratory impairment (e.g., uncontrolled asthma/COPD, restrictive lung disease),
- Has active Hepatitis B or Hepatitis C
Where
- Los Angeles, California
- Wilson, North Carolina
Related conditions & keywords
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Aug 31, 2026 · Source of record for eligibility and locations