NCT06362252 · Daiichi Sankyo
A Study of I-DXd in Combination With Atezolizumab With or Without Carboplatin as First-Line Induction or Maintenance in Subjects With Extensive Stage-Small Cell Lung Cancer (IDeate-Lung03)
What this study is about
This study is designed to evaluate the safety and effectiveness of ifinatamab deruxtecan (I-DXd) in combination with immune checkpoint inhibitor (ICI) atezolizumab with or without carboplatin in participants with extensive stage-small cell lung cancer (ES-SCLC) in the first-line (1L) setting.
View original scientific description
This study is designed to evaluate the safety and efficacy of ifinatamab deruxtecan (I-DXd) in combination with immune checkpoint inhibitor (ICI) atezolizumab with or without carboplatin in participants with extensive stage-small cell lung cancer (ES-SCLC) in the first-line (1L) setting.
Interventions
DRUG
Ifinatamab deruxtecan
Intravenous administration
DRUG
Atezolizumab
Intravenous administration
DRUG
Carboplatin
Intravenous administration
Primary outcome measures
Number of Participants Reporting Dose-limiting Toxicities Following I-DXd in Combination With Atezolizumab With or Without Carboplatin (Part A)
Time frame: Cycle 1 Day 1 up to Cycle 1 Day 21 (each cycle is 21 days)
Overall Number of Participants With Treatment-emergent Adverse Events Following I-DXd in Combination With Atezolizumab With or Without Carboplatin (Part A and B)
Time frame: Baseline up to 37 months
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.
Exclusion criteria
- are available in the protocol. Inclusion Criteria Participants must meet all of the following criteria to be eligible for enrollment into the study: 1. Sign and date the informed consent form (ICF), prior to the start of any study-specific qualification procedures. 2. Adults ≥18 years or the minimum legal adult age (whichever is greater) at the time the ICF is signed. 3. Has histologically or cytologically confirmed diagnosis of ES-SCLC who will require first-line (IL) therapy. 4. For Cohort 1, participant has received 4 cycles of 1L induction therapy with carboplatin, etoposide, and atezolizumab for ES-SCLC with ongoing CR PR, CR, or SD per RECIST v1.1 assessed by the investigator. For Cohort 2, participant has received no prior treatment for ES-SCLC. 5. For Cohort 2, participant has at least one measurable lesion according to RECIST v1.1 on computed tomography (CT) or magnetic resonance imaging (MRI) as assessed by the investigator.
Where
- Birmingham, Alabama
- Phoenix, Arizona
- Los Angeles, California
- Newport Beach, California
- Jacksonville, Florida
- Orlando, Florida
- Tampa, Florida
- Chicago, Illinois
- Detroit, Michigan
- Minneapolis, Minnesota
- Rochester, Minnesota
- Lebanon, New Hampshire
And 10 more locations — see the full list below.
Collaborators
Merck Sharp & Dohme LLC
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 Feb 6, 2026 · Source of record for eligibility and locations