Extensive Stage-small Cell Lung CancerPhase 1/2NCT06362252
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)
A Phase 1/2 study testing Ifinatamab deruxtecan, Atezolizumab and Carboplatin in people with Extensive Stage-small Cell Lung Cancer, run by Daiichi Sankyo at 58 sites in 4 countries.
Trial summary
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. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Extensive Stage-small Cell Lung Cancer
- What is being tested?
- Ifinatamab deruxtecan, Atezolizumab and Carboplatin
- Type of treatment
- Injection or infusion
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 123 participants
- Where
- 58 sitesin 4 countries
- Study dates
- 22 Jul 2024to 20 Feb 2028
- Phase
- Phase 1/2
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Participants must meet all of the following criteria to be eligible for enrollment into the study:
- Sign and date the informed consent form (ICF), prior to the start of any study-specific qualification procedures.
- Adults ≥18 years or the minimum legal adult age (whichever is greater) at the time the ICF is signed.
- Has histologically or cytologically confirmed diagnosis of ES-SCLC who will require first-line (IL) therapy.
- 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.
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- 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.
- For Cohort 2, participant must have at least one lesion, amenable to core biopsy, and must consent to provide a pretreatment biopsy tissue sample and on-treatment biopsy.
- Has ECOG PS of ≤1 (assessed within 7 days before enrollment/randomization).
- Has adequate organ and bone marrow function within 7 days before the start of study treatment as specified in the study protocol.
- A female subject of childbearing potential (POCBP) is eligible to participate if the following conditions are met:
- Subject is not pregnant as confirmed by highly sensitive pregnancy test during Screening (within 3 days prior to enrollment/randomization)
- Subject does not breastfeed during the treatment period and for at least 8/5/6 months after last dose of I-DXd/atezolizumab/carboplatin, respectively.
- Subject agrees to adhere to a contraceptive method that is highly effective and agrees not to donate eggs (ova, oocytes) to others or freeze/store eggs during the treatment period and for at least the time needed to eliminate each study drug after the last dose. The length of time required to continue contraception and avoid donating/freezing eggs after last dose for I-DXd/atezolizumab/carboplatin is 8/5/6 months, respectively. Preservation of eggs may be considered prior to first dose of study drug.
- A male subject capable of producing sperm is eligible to participate if he agrees to the following during the intervention period and for at least the time needed to eliminate each study drug. The length of time required to continue contraception and avoid donating sperm after last dose for I-DXd/atezolizumab/carboplatin is 6/5/6 months, respectively.
- Avoid donating sperm.
- Adhere to either of the contraception methods: true abstinence from penile-vaginal intercourse or uses a penile/external condom when having penile-vaginal intercourse with a non-subject of childbearing potential plus partner use of an additional contraceptive method.
- Is willing and able to comply with scheduled visits, drug administration plan, laboratory tests, other study procedures, and study restrictions.
Who cannot join
- Participants who meet any of the following criteria will be disqualified from entering the study:
- Has received prior treatment with orlotamab, enoblituzumab, or other B7-H3 targeted agents, including I-DXd.
- Prior discontinuation of an ADC that consists of an exatecan derivative (eg, trastuzumab deruxtecan) due to treatment-related toxicities.
- Has received prior treatment with CD137 agonists or ICIs, including anti-cytotoxic T-cell lymphocyte-4, anti-PD-1, and anti-PD-L1 therapeutic antibodies, except for atezolizumab for Cohort 1.
- Has inadequate washout period before enrollment/randomization as specified in the study protocol.
- Has any of the following within the past 6 months: cerebrovascular accident, transient ischemic attack, or another arterial thromboembolic event.
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- Has clinically active brain metastases, spinal cord compression, or leptomeningeal carcinomatosis, defined as untreated and symptomatic, or requiring therapy with steroids or anticonvulsants to control associated symptoms.
- Has clinically significant corneal disease.
- Has uncontrolled or significant cardiovascular disease,.
- Has history of (non-infectious) ILD/pneumonitis that required corticosteroids, current ILD/pneumonitis, or suspected ILD/pneumonitis that cannot be ruled out by imaging at Screening.
- Has clinically severe pulmonary compromise resulting from intercurrent pulmonary illnesses
- Is on chronic steroid treatment (dose of 10 mg daily or more prednisone equivalent), except for low-dose inhaled steroids (for asthma/chronic obstructive pulmonary disease, topical steroids (for mild skin conditions), or intra-articular steroid injections.
- Has history of malignancy other than SCLC within the 5 years prior to randomization/enrollment, except adequately resected non-melanoma skin cancer, curatively treated in situ disease, superficial gastrointestinal tract tumors, and non-muscle invasive bladder cancer curatively resected by endoscopic surgery.
- Has history of allogeneic bone marrow, stem cell, or solid organ transplant.
- Has unresolved toxicities from previous anticancer therapy, defined as toxicities (other than alopecia) not yet resolved to NCI-CTCAE V5.0, Grade ≤1 or baseline.
- Has history of hypersensitivity to the drug substances, inactive ingredients in the drug product or severe hypersensitivity reactions to other monoclonal antibodies.
- Has evidence of ongoing uncontrolled systemic bacterial, fungal, or viral infection.
- Has active or uncontrolled human immunodeficiency virus (HIV) infection.
- Has active or uncontrolled hepatitis B or C virus (HBV or HCV) infection.
- Has history of autoimmune disease.
- Has any evidence of severe or uncontrolled systemic diseases.
- Has received a live vaccine within 30 days prior to the first dose of study drug.
- Is a female who is pregnant or breastfeeding or planning to become pregnant.
- Has prior or ongoing clinically relevant illness, medical condition, surgical history, physical finding, or laboratory abnormality that, in the investigator's opinion, could affect the safety of the participant; alter the absorption, distribution, metabolism, or excretion of the study drug; or confound the assessment of study results.
- Has psychological, social, familial, or logistical factors that would prevent regular follow-up
Trial locations and contacts
58 sites in 4 countries. Contact the study team or a site near you to ask about taking part.
(US) Daiichi Sankyo Contact for Clinical Trial Information contact
(Asia) Daiichi Sankyo Contact for Clinical Trial Information contact
58 sites in 4 countries
United States26 sites, 25 recruiting
- Recruiting
University of Alabama -Birmingham
Birmingham, Alabama, 35233
Principal Investigator
- Recruiting
Robert H. Lurie Comprehensive Cancer Center of Northwestern University
Chicago, Illinois, 60611
Principal Investigator
- Active, not recruiting
Henry Ford Hospital
Detroit, Michigan, 48202
- Recruiting
Astera Cancer Care
East Brunswick, New Jersey, 08816
- Recruiting
Next Virginia
Fairfax, Virginia, 22031
Principal Investigator
- Recruiting
John Theurer Cancer Center At Hackensack Umc
Hackensack, New Jersey, 07601
Principal Investigator
- Recruiting
Mayo Clinic-Jacksonville
Jacksonville, Florida, 32224
Principal Investigator
- Recruiting
Lancaster General Hospital - Ann B Barshinger Cancer Institute
Lancaster, Pennsylvania, 17601
- Recruiting
Dartmouth-Hitchcock Medical Center
Lebanon, New Hampshire, 03766
Principal Investigator
- Not yet recruiting
David Geffen School of Medicine
Los Angeles, California, 90095
Principal Investigator
- Recruiting
Medical College of Wisconsin
Milwaukee, Wisconsin, 53226
Principal Investigator
- Recruiting
New York University Cancer Center - Laura and Isaac Perlmutter Cancer Center At Nyu Langone
Mineola, New York, 11501
Principal Investigator
- Recruiting
NYU Langone Hospital - Long Island
Mineola, New York, 11501
Principal Investigator
- Recruiting
Regents of the University of Minnesota
Minneapolis, Minnesota, 55455
Principal Investigator
- Recruiting
Scri Oncology Partners
Nashville, Tennessee, 37203
Principal Investigator
- Recruiting
Memorial Sloan Kettering Cancer Center
New York, New York, 10021
Principal Investigator
- Recruiting
Columbia University Hervert Irving Comprehensive Cancer Center
New York, New York, 10032
Principal Investigator
- Recruiting
Montefiore Medical Center
New York, New York, 10461
- Recruiting
Hoag Memorial Hospital Presbyterian
Newport Beach, California, 92663
Principal Investigator
- Recruiting
Advent Health Orlando
Orlando, Florida, 32804
Principal Investigator
- Recruiting
University of Pennsylvania, Abramson Cancer Center
Philadelphia, Pennsylvania, 19104
- Recruiting
Thomas Jefferson University Hospital - Central
Philadelphia, Pennsylvania, 19107
Principal Investigator
- Recruiting
Mayo Clinic Arizona
Phoenix, Arizona, 85054
Principal Investigator
- Recruiting
Mayo Clinic
Rochester, Minnesota, 55905
Principal Investigator
- Recruiting
Moffitt Cancer Center
Tampa, Florida, 33612
- Recruiting
Northwest Cancer Specialists, P.C.-Vancouver
Vancouver, Washington, 98684
Principal Investigator
Spain12 sites, 12 recruiting
- Recruiting
Hospital Clinic de Barcelona
Barcelona, 08036
Principal Investigator
- Recruiting
Hospital Universitari Vall D'Hebron
Barcelona, 8035
Principal Investigator
- Recruiting
Ico Girona - Hospital Universitari de Girona Dr Josep Trueta
Girona, 17007
Principal Investigator
- Recruiting
ICO l'Hospitalet - Hospital Duran i Reynals
L'Hospitalet de Llobregat, 08908
Principal Investigator
- Recruiting
Hospital General Universitario Gregorio Marañon
Madrid, 28007
Principal Investigator
- Recruiting
Hospital Universitario Ramon Y Cajal
Madrid, 28034
Principal Investigator
- Recruiting
Hospital Universitario 12 de Octubre
Madrid, 28041
Principal Investigator
- Recruiting
Next Madrid
Madrid, 28223
Principal Investigator
- Recruiting
Hospital Regional Universitario de Malaga
Málaga, 29010
Principal Investigator
- Recruiting
Hospital Universitario Virgen Macarena
Seville, 41009
Principal Investigator
- Recruiting
Hospital Universitario Virgen Del Rocio
Seville, 41013
Principal Investigator
- Recruiting
Hospital Alvaro Cunqueiro
Vigo, 36312
Principal Investigator
Japan11 sites, 11 recruiting
- Recruiting
NHO Himeji Medical Center
Himeji-shi, 670-8520
- Recruiting
Kansai Medical University Hospital
Hirakata-shi, 573-1191
Principal Investigator
- Recruiting
National Cancer Center Hospital East
Kashiwa, 277-8577
Principal Investigator
- Recruiting
The Cancer Institute Hospital of Jfcr
Kōtoku, 135-8550
Principal Investigator
- Recruiting
Social Welfare Organization Saiseikai Imperial Gift Foundation, Inc. Saiseikai Kumamoto Hospital
Kumamoto, 861-4193
Principal Investigator
- Recruiting
Shizuoka Cancer Center
Nagaizumi-cho, 411-8777
Principal Investigator
- Recruiting
Niigata Cancer Center Hospital
Niigata, 951-8566
Principal Investigator
- Recruiting
Okayama University Hospital
Okayama, 700-8558
Principal Investigator
- Recruiting
Kindai University Hospital
Ōsaka-sayama, 589-8511
Principal Investigator
- Recruiting
Tokushima University Hospital
Tokushima, 770-8503
- Recruiting
Fujita Health University Hospital
Toyoake-shi, 470-1192
France9 sites, 9 recruiting
- Recruiting
Hopital Albert Calmette - Chu Lille
Lille, 59037
Principal Investigator
- Recruiting
Centre Léon Bérard
Lyon, 69008
Principal Investigator
- Recruiting
Hôpital de la Timone
Marseille, 13005
Principal Investigator
- Recruiting
Institut Curie - Site de Paris
Paris, 75005
Principal Investigator
- Recruiting
Hopital Tenon
Paris, 75020
Principal Investigator
- Recruiting
Chu Rennes - Hopital Pontchaillou
Rennes, 35000
Principal Investigator
- Recruiting
CHU Nantes - Hôpital Guillaume et René Laënnec
Saint-Herblain, 44805
Principal Investigator
- Recruiting
Hôpital Foch
Suresnes, 92151
Principal Investigator
- Not yet recruiting
Institut Gustave Roussy
Villejuif, 94805
Principal Investigator
About this study
Official title: A Phase 1b/2, Multicenter, Open-label Study of Ifinatamab Deruxtecan (I-DXd), a B7-H3 Antibody-Drug Conjugate (ADC), in Combination With Atezolizumab With or Without Carboplatin as First-line Induction or Maintenance, in Subjects With Extensive-stage Small Cell Lung Cancer (ES-SCLC) (IDeate-Lung03)
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.
Read the detailed description
This study consists of two parts and two cohorts: Part A (Phase 1b; Safety Run-in) and Part B (Phase 2; Dose Optimization), Cohort 1 (I-DXd in maintenance) and Cohort 2 (I-DXd in induction + maintenance).
The primary objective of this study is to evaluate the safety and tolerability of I-DXd in combination with atezolizumab with or without carboplatin by assessing treatment-emergent adverse events (TEAEs) and other safety parameters which will inform optimal dose selection of I-DXd in the combination regimens (Dose Optimization Part B) of this study.
- Conditions
- Extensive Stage-small Cell Lung Cancer
- Being tested
- Ifinatamab deruxtecan, Atezolizumab, Carboplatin
- Keywords
- Extensive stage-small cell lung cancer (ES-SCLC), Ifinatamab deruxtecan, I-DXd
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Ifinatamab deruxtecanDrug
Also called I-DXd
Intravenous administration
AtezolizumabDrug
Intravenous administration
CarboplatinDrug
Intravenous administration
| Study group | Role | What they receive |
|---|---|---|
| Cohort 1, Part A: Maintenance Only (I-DXd 12 mg/kg) | Experimental | Part A (Safety Run-in): Participants who must have received 4 cycles of 1L induction standard of care (SoC) therapy with best overall response of CR, PR, or SD will receive maintenance therapy only. Maintenance therapy consisting of I-DXd 12 mg/kg (or a lower dose based on data for I-DXd collected during the study) + atezolizumab 1200 mg IV Q3W.
A 5-day surveillance period between each of the first 3 participants (up to a maximum of 9 participants) dosed is included as a safety measure. Receives: Drug: Ifinatamab deruxtecan; Drug: Atezolizumab |
| Cohort 2, Part A: Induction + Maintenance (I-DXd 8 mg/kg) | Experimental | Part A (Safety Run-in): Participants who are treatment-naive, newly diagnosed with ES-SCLC will receive 4 cycles of 1L I-DXd induction therapy (8 mg/kg IV Q3W) + atezolizumab (1200 mg IV Q3W) + carboplatin (AUC 5 mg/ml×min IV Q3W) followed by maintenance therapy. Maintenance therapy consisting of I-DXd 8 mg/kg (or a lower dose based on data for I-DXd collected during the study) + atezolizumab 1200 mg IV Q3W. Receives: Drug: Ifinatamab deruxtecan; Drug: Atezolizumab; Drug: Carboplatin |
| Cohort 2, Part A: Induction + Maintenance (I-DXd 12 mg/kg) | Experimental | Part A (Safety Run-in): Participants who are treatment-naive, newly diagnosed with ES-SCLC will receive 4 cycles of 1L I-DXd induction therapy (12 mg/kg IV Q3W) + atezolizumab (1200 mg IV Q3W) + carboplatin (AUC 5 mg/ml×min IV Q3W) followed by maintenance therapy. Maintenance therapy consisting of I-DXd 12 mg/kg (or a lower dose based on data for I-DXd collected during the study) + atezolizumab 1200 mg IV Q3W. Receives: Drug: Ifinatamab deruxtecan; Drug: Atezolizumab; Drug: Carboplatin |
| Cohort 1, Part B: Maintenance (I-DXd 8 mg/kg) | Experimental | Part B: Participants who must have received 4 cycles of 1L induction standard of care (SoC) therapy with best overall response of CR, PR, or SD will receive maintenance therapy only starting at Cycle 1 Day 1. Maintenance therapy consisting of I-DXd 8 mg/kg (or a lower dose based on data for I-DXd collected during the study) + atezolizumab 1200 mg IV Q3W Receives: Drug: Ifinatamab deruxtecan; Drug: Atezolizumab |
| Cohort 1, Part B: Maintenance (I-DXd 12 mg/kg) | Experimental | Part B: Participants who must have received 4 cycles of 1L induction standard of care (SoC) therapy with best overall response of CR, PR, or SD will receive maintenance therapy only starting at Cycle 1 Day 1. Maintenance therapy consisting of I-DXd 12 mg/kg (or a lower dose based on data for I-DXd collected during the study) + atezolizumab 1200 mg IV Q3W. Receives: Drug: Ifinatamab deruxtecan; Drug: Atezolizumab |
| Cohort 2, Part B: Induction + Maintenance (I-DXd 8 mg/kg) | Experimental | Participants who are treatment-naive, newly diagnosed with ES-SCLC will receive 4 cycles of 1L I-DXd induction therapy (8 mg/kg IV Q3W) + atezolizumab (1200 mg IV Q3W) + carboplatin (AUC 5 mg/ml×min IV Q3W) followed by maintenance therapy. Maintenance therapy consisting of I-DXd 8 mg/kg (or a lower dose based on data for I-DXd collected during the study) + atezolizumab 1200 mg IV Q3W. Receives: Drug: Ifinatamab deruxtecan; Drug: Atezolizumab; Drug: Carboplatin |
| Cohort 2, Part B: Induction + Maintenance (I-DXd 12 mg/kg) | Experimental | Participants who are treatment-naive, newly diagnosed with ES-SCLC will receive 4 cycles of IL I-DXd induction therapy (12 mg/kg IV Q3W) + atezolizumab (1200 mg IV Q3W) + carboplatin (AUC 5 mg/ml×minIV Q3W) followed by maintenance therapy. Maintenance therapy consisting of I-DXd 12 mg/kg (or a lower dose based on data for I-DXd collected during the study) + atezolizumab 1200 mg IV Q3W. Receives: Drug: Ifinatamab deruxtecan; Drug: Atezolizumab; Drug: Carboplatin |
What is being measured
The primary outcome is the main question the study is designed to answer.
Number of Participants Reporting Dose-limiting Toxicities Following I-DXd in Combination With Atezolizumab With or Without Carboplatin (Part A)
Measured: 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)
Measured: Baseline up to 37 months
Secondary outcomes (12)
Progression-free Survival As Assessed by Blinded Independent Central Review and Investigator Following I-DXd in Combination With Atezolizumab With or Without Carboplatin (Part A and B)
Progression-free survival is defined as the time from the enrollment/randomization date to the earlier of the dates of the first documentation of disease progression assessed by BICR and investigator per RECIST v1.1 or death due to any cause.
Measured: From start date of study drug to the earlier date of the first objective documentation of radiographic disease progression assessed by BICR and investigator per RECIST v1.1 or death due to any cause, whichever occurs first, up to approximately 37 months
Objective Response Rate Assessed by Blinded Independent Central Review and Investigator Following I-DXd in Combination With Atezolizumab With Carboplatin (Part A and B of Cohort 2 Only)
Objective response rate (ORR) is defined as proportion of subjects who achieved a best overall response of confirmed complete response (CR) or confirmed partial response (PR) per BICR and investigator according to RECIST v1.1.
Measured: Baseline up until documented progressive disease, death, lost to follow-up, or withdrawal by the participant, up to approximately 37 months
Duration of Response As Assessed by Blinded Independent Central Review and Investigator Following I-DXd in Combination With Atezolizumab With Carboplatin (Part A and B of Cohort 2 Only)
Duration of response (DoR) is defined as the time from the date of the first documentation of objective response (confirmed complete response [CR] or confirmed partial response [PR]) to the date of the first documentation of progressive disease (PD) or death due to any cause, whichever occurs first. The DoR will be calculated for responding participants (confirmed PR or confirmed CR) only.
Measured: From the date of first documentation of confirmed response (CR or PR) to the first documentation of objective progression or to death due to any cause, whichever occurs first, up to approximately 37 months
Disease Control Rate As Assessed by Blinded Independent Central Review and Investigator Following I-DXd in Combination With Atezolizumab With Carboplatin (Part A and B of Cohort 2 Only)
Disease control rate is defined as the proportion of participants who have achieved a best overall response of confirmed CR, confirmed PR, or SD by BICR and investigator assessment per RECIST v1.1.
Measured: Baseline up until documented progressive disease, death, lost to follow-up, or withdrawal by the participant, up to approximately 37 months
Clinical Benefit Rate as Assessed by Blinded Independent Central Review and Investigator Following I-DXd in Combination With Atezolizumab With Carboplatin (Part A and B of Cohort 2 Only)
Clinical benefit rate (CBR) is defined as the proportion of participants who achieved a best overall response of confirmed CR, confirmed PR, or SD lasting for at least 180 days.
Measured: Baseline up until documented progressive disease, death, lost to follow-up, or withdrawal by the participant, up to approximately 37 months
Time to Response As Assessed by Blinded Independent Central Review and Investigator Following I-DXd in Combination With Atezolizumab With Carboplatin (Part A and B of Cohort 2 Only)
Time to response (TTR) is defined as the time from the date of enrollment/randomization to the date of the first documentation of objective response (confirmed CR or confirmed PR) in responding subjects.
Measured: From the start date of study drug to the date of the first documentation of response (CR or PR) that is subsequently confirmed, up to approximately 37 months
Best Percentage Change in the Sum of Diameters (SoD) of Measurable Tumors As Assessed by Blinded Independent Central Review and Investigator Following I-DXd in Combination With Atezolizumab With Carboplatin (Part A and B of Cohort 2 Only)
The best percentage change in SoD is defined as the percentage change in the smallest SoD from all post-baseline tumor assessments, taking as reference the baseline SoD.
Measured: Baseline up to approximately 37 months
Overall Survival Following I-DXd in Combination With Atezolizumab With or Without Carboplatin (Part A and B)
Time from the date of enrollment/randomization to the date of death due to any cause.
Measured: From the start date of study drug to the date of death due to any cause, whichever occurs first, up to approximately 37 months
Pharmacokinetic Parameter Maximum Serum Concentration of I-DXd
Maximum serum concentration (Cmax) will be assessed using non-compartmental methods.
Measured: Cycle 1 Day 1 pre-dose up to Cycle 9 (and every 2 cycles thereafter up to 37 months) Day 1 pre-dose (each cycle is 21 days)
Pharmacokinetic Parameter Time to Maximum Serum Concentration of I-DXd
Time to maximum serum concentration (Tmax) will be assessed using non-compartmental methods.
Measured: Cycle 1 Day 1 pre-dose up to Cycle 9 (and every 2 cycles thereafter up to 37 months) Day 1 pre-dose (each cycle is 21 days)
Pharmacokinetic Parameter Area Under the Concentration Curve of I-DXd
Area under the concentration-time curve up to the last quantifiable time (AUClast) and Area under the concentration-time curve during dosing interval (AUCtau) will be assessed using non-compartmental methods.
Measured: Cycle 1 Day 1 pre-dose up to Cycle 9 (and every 2 cycles thereafter up to 37 months) Day 1 pre-dose (each cycle is 21 days)
The Number of Participants Who Are Anti-Drug Antibody (ADA)-Positive At Any Time and Who Have A Treatment-emergent Anti-Drug Antibody
The ADA prevalence, which is the percentage of participants who are ADA positive at any time point (baseline or postbaseline), as well as the ADA incidence, which is the proportion of participants having treatment-emergent ADA during the study period, will be reported.
Measured: Baseline up to approximately 37 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted12 Apr 2024
- Study start22 Jul 2024
- Primary completion20 Jul 2027 (estimated)
- Study completion20 Feb 2028 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Extensive Stage-small Cell Lung CancerStudies of the same condition, open and under way.
- More trials run by Daiichi SankyoThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 1/2
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 123 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Daiichi Sankyo
- Sponsor type
- Industry (pharma, biotech, devices)
- Collaborators
- Merck Sharp & Dohme LLC
- Responsible party
- Sponsor
- Investigators
- Global Clinical Leader, Study director, Daiichi Sankyo
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06362252
- Sponsor's protocol ID
- DS7300-189
- Other IDs
- 2023-509629-36, 2031240089, 2023
- Status last verified
- Sep 2026
- First submitted
- 2 Jan 2024
- Last updated
- 1 Oct 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- Yes
- FDA-regulated device
- No
- Individual data sharing
- Yes: De-identified individual participant data (IPD) on completed studies and applicable supporting clinical trial documents may be available upon request at https://vivli.org/. In cases where clinical trial data and supporting documents are provided pursuant to our company policies and procedures, Daiichi Sankyo will continue to protect the privacy of our clinical trial participants. Details on data sharing criteria and the procedure for requesting access can be found at this web address: https://vivli.org/ourmember/daiichi-sankyo/
Study at a glance
From the registry record, last updated by the sponsor on 1 Oct 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Phase 1b/2, Multicenter, Open-label Study of Ifinatamab Deruxtecan (I-DXd), a B7-H3 Antibody-Drug Conjugate (ADC), in Combination With Atezolizumab With or Without Carboplatin as First-line Induction or Maintenance, in Subjects With Extensive-stage Small Cell Lung Cancer (ES-SCLC) (IDeate-Lung03)
- ClinicalTrials.gov ID
- NCT06362252
- Acronym / sponsor ID
- DS7300-189
- Conditions
- Extensive Stage-small Cell Lung Cancer
- Keywords
- Extensive stage-small cell lung cancer (ES-SCLC), Ifinatamab deruxtecan, I-DXd
- Phase
- Phase 1/2
- Study type
- Interventional
- Recruitment status
- Recruiting
- Enrolment
- 123 participants (estimated)
- Lead sponsor
- Daiichi SankyoIndustry (pharma, biotech, devices)
- Collaborators
- Merck Sharp & Dohme LLC
- Study start
- 22 Jul 2024 (actual)
- Primary completion
- 20 Jul 2027 (estimated)
- Study completion
- 20 Feb 2028 (estimated)
- First posted
- 12 Apr 2024 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
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.
Detailed description
This study consists of two parts and two cohorts: Part A (Phase 1b; Safety Run-in) and Part B (Phase 2; Dose Optimization), Cohort 1 (I-DXd in maintenance) and Cohort 2 (I-DXd in induction + maintenance).
The primary objective of this study is to evaluate the safety and tolerability of I-DXd in combination with atezolizumab with or without carboplatin by assessing treatment-emergent adverse events (TEAEs) and other safety parameters which will inform optimal dose selection of I-DXd in the combination regimens (Dose Optimization Part B) of this study.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 7
| Arm | Type | Receives |
|---|---|---|
| Cohort 1, Part A: Maintenance Only (I-DXd 12 mg/kg) | Experimental | Drug: Ifinatamab deruxtecan, Drug: AtezolizumabPart A (Safety Run-in): Participants who must have received 4 cycles of 1L induction standard of care (SoC) therapy with best overall response of CR, PR, or SD will receive maintenance therapy only. Maintenance therapy consisting of I-DXd 12 mg/kg (or a lower dose based on data for I-DXd collected during the study) + atezolizumab 1200 mg IV Q3W. A 5-day surveillance period between each of the first 3 participants (up to a maximum of 9 participants) dosed is included as a safety measure. |
| Cohort 2, Part A: Induction + Maintenance (I-DXd 8 mg/kg) | Experimental | Drug: Ifinatamab deruxtecan, Drug: Atezolizumab, Drug: CarboplatinPart A (Safety Run-in): Participants who are treatment-naive, newly diagnosed with ES-SCLC will receive 4 cycles of 1L I-DXd induction therapy (8 mg/kg IV Q3W) + atezolizumab (1200 mg IV Q3W) + carboplatin (AUC 5 mg/ml×min IV Q3W) followed by maintenance therapy. Maintenance therapy consisting of I-DXd 8 mg/kg (or a lower dose based on data for I-DXd collected during the study) + atezolizumab 1200 mg IV Q3W. |
| Cohort 2, Part A: Induction + Maintenance (I-DXd 12 mg/kg) | Experimental | Drug: Ifinatamab deruxtecan, Drug: Atezolizumab, Drug: CarboplatinPart A (Safety Run-in): Participants who are treatment-naive, newly diagnosed with ES-SCLC will receive 4 cycles of 1L I-DXd induction therapy (12 mg/kg IV Q3W) + atezolizumab (1200 mg IV Q3W) + carboplatin (AUC 5 mg/ml×min IV Q3W) followed by maintenance therapy. Maintenance therapy consisting of I-DXd 12 mg/kg (or a lower dose based on data for I-DXd collected during the study) + atezolizumab 1200 mg IV Q3W. |
| Cohort 1, Part B: Maintenance (I-DXd 8 mg/kg) | Experimental | Drug: Ifinatamab deruxtecan, Drug: AtezolizumabPart B: Participants who must have received 4 cycles of 1L induction standard of care (SoC) therapy with best overall response of CR, PR, or SD will receive maintenance therapy only starting at Cycle 1 Day 1. Maintenance therapy consisting of I-DXd 8 mg/kg (or a lower dose based on data for I-DXd collected during the study) + atezolizumab 1200 mg IV Q3W |
| Cohort 1, Part B: Maintenance (I-DXd 12 mg/kg) | Experimental | Drug: Ifinatamab deruxtecan, Drug: AtezolizumabPart B: Participants who must have received 4 cycles of 1L induction standard of care (SoC) therapy with best overall response of CR, PR, or SD will receive maintenance therapy only starting at Cycle 1 Day 1. Maintenance therapy consisting of I-DXd 12 mg/kg (or a lower dose based on data for I-DXd collected during the study) + atezolizumab 1200 mg IV Q3W. |
| Cohort 2, Part B: Induction + Maintenance (I-DXd 8 mg/kg) | Experimental | Drug: Ifinatamab deruxtecan, Drug: Atezolizumab, Drug: CarboplatinParticipants who are treatment-naive, newly diagnosed with ES-SCLC will receive 4 cycles of 1L I-DXd induction therapy (8 mg/kg IV Q3W) + atezolizumab (1200 mg IV Q3W) + carboplatin (AUC 5 mg/ml×min IV Q3W) followed by maintenance therapy. Maintenance therapy consisting of I-DXd 8 mg/kg (or a lower dose based on data for I-DXd collected during the study) + atezolizumab 1200 mg IV Q3W. |
| Cohort 2, Part B: Induction + Maintenance (I-DXd 12 mg/kg) | Experimental | Drug: Ifinatamab deruxtecan, Drug: Atezolizumab, Drug: CarboplatinParticipants who are treatment-naive, newly diagnosed with ES-SCLC will receive 4 cycles of IL I-DXd induction therapy (12 mg/kg IV Q3W) + atezolizumab (1200 mg IV Q3W) + carboplatin (AUC 5 mg/ml×minIV Q3W) followed by maintenance therapy. Maintenance therapy consisting of I-DXd 12 mg/kg (or a lower dose based on data for I-DXd collected during the study) + atezolizumab 1200 mg IV Q3W. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (18 listed)
- Participants must meet all of the following criteria to be eligible for enrollment into the study:
- Sign and date the informed consent form (ICF), prior to the start of any study-specific qualification procedures.
- Adults ≥18 years or the minimum legal adult age (whichever is greater) at the time the ICF is signed.
- Has histologically or cytologically confirmed diagnosis of ES-SCLC who will require first-line (IL) therapy.
- 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.
Key exclusion criteria (25 listed)
- Participants who meet any of the following criteria will be disqualified from entering the study:
- Has received prior treatment with orlotamab, enoblituzumab, or other B7-H3 targeted agents, including I-DXd.
- Prior discontinuation of an ADC that consists of an exatecan derivative (eg, trastuzumab deruxtecan) due to treatment-related toxicities.
- Has received prior treatment with CD137 agonists or ICIs, including anti-cytotoxic T-cell lymphocyte-4, anti-PD-1, and anti-PD-L1 therapeutic antibodies, except for atezolizumab for Cohort 1.
- Has inadequate washout period before enrollment/randomization as specified in the study protocol.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Ifinatamab deruxtecanAlso: I-DXdIntravenous administration | Drug | Cohort 1, Part A: Maintenance Only (I-DXd 12 mg/kg), Cohort 1, Part B: Maintenance (I-DXd 12 mg/kg), Cohort 1, Part B: Maintenance (I-DXd 8 mg/kg), Cohort 2, Part A: Induction + Maintenance (I-DXd 12 mg/kg), Cohort 2, Part A: Induction + Maintenance (I-DXd 8 mg/kg), Cohort 2, Part B: Induction + Maintenance (I-DXd 12 mg/kg), Cohort 2, Part B: Induction + Maintenance (I-DXd 8 mg/kg) |
| AtezolizumabIntravenous administration | Drug | Cohort 1, Part A: Maintenance Only (I-DXd 12 mg/kg), Cohort 1, Part B: Maintenance (I-DXd 12 mg/kg), Cohort 1, Part B: Maintenance (I-DXd 8 mg/kg), Cohort 2, Part A: Induction + Maintenance (I-DXd 12 mg/kg), Cohort 2, Part A: Induction + Maintenance (I-DXd 8 mg/kg), Cohort 2, Part B: Induction + Maintenance (I-DXd 12 mg/kg), Cohort 2, Part B: Induction + Maintenance (I-DXd 8 mg/kg) |
| CarboplatinIntravenous administration | Drug | Cohort 2, Part A: Induction + Maintenance (I-DXd 12 mg/kg), Cohort 2, Part A: Induction + Maintenance (I-DXd 8 mg/kg), Cohort 2, Part B: Induction + Maintenance (I-DXd 12 mg/kg), Cohort 2, Part B: Induction + Maintenance (I-DXd 8 mg/kg) |
Primary outcome
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
12 secondary outcomes
Progression-free Survival As Assessed by Blinded Independent Central Review and Investigator Following I-DXd in Combination With Atezolizumab With or Without Carboplatin (Part A and B)
Time frame: From start date of study drug to the earlier date of the first objective documentation of radiographic disease progression assessed by BICR and investigator per RECIST v1.1 or death due to any cause, whichever occurs first, up to approximately 37 months
Objective Response Rate Assessed by Blinded Independent Central Review and Investigator Following I-DXd in Combination With Atezolizumab With Carboplatin (Part A and B of Cohort 2 Only)
Time frame: Baseline up until documented progressive disease, death, lost to follow-up, or withdrawal by the participant, up to approximately 37 months
Duration of Response As Assessed by Blinded Independent Central Review and Investigator Following I-DXd in Combination With Atezolizumab With Carboplatin (Part A and B of Cohort 2 Only)
Time frame: From the date of first documentation of confirmed response (CR or PR) to the first documentation of objective progression or to death due to any cause, whichever occurs first, up to approximately 37 months
Disease Control Rate As Assessed by Blinded Independent Central Review and Investigator Following I-DXd in Combination With Atezolizumab With Carboplatin (Part A and B of Cohort 2 Only)
Time frame: Baseline up until documented progressive disease, death, lost to follow-up, or withdrawal by the participant, up to approximately 37 months
Clinical Benefit Rate as Assessed by Blinded Independent Central Review and Investigator Following I-DXd in Combination With Atezolizumab With Carboplatin (Part A and B of Cohort 2 Only)
Time frame: Baseline up until documented progressive disease, death, lost to follow-up, or withdrawal by the participant, up to approximately 37 months
Time to Response As Assessed by Blinded Independent Central Review and Investigator Following I-DXd in Combination With Atezolizumab With Carboplatin (Part A and B of Cohort 2 Only)
Time frame: From the start date of study drug to the date of the first documentation of response (CR or PR) that is subsequently confirmed, up to approximately 37 months
Best Percentage Change in the Sum of Diameters (SoD) of Measurable Tumors As Assessed by Blinded Independent Central Review and Investigator Following I-DXd in Combination With Atezolizumab With Carboplatin (Part A and B of Cohort 2 Only)
Time frame: Baseline up to approximately 37 months
Overall Survival Following I-DXd in Combination With Atezolizumab With or Without Carboplatin (Part A and B)
Time frame: From the start date of study drug to the date of death due to any cause, whichever occurs first, up to approximately 37 months
Pharmacokinetic Parameter Maximum Serum Concentration of I-DXd
Time frame: Cycle 1 Day 1 pre-dose up to Cycle 9 (and every 2 cycles thereafter up to 37 months) Day 1 pre-dose (each cycle is 21 days)
Pharmacokinetic Parameter Time to Maximum Serum Concentration of I-DXd
Time frame: Cycle 1 Day 1 pre-dose up to Cycle 9 (and every 2 cycles thereafter up to 37 months) Day 1 pre-dose (each cycle is 21 days)
Pharmacokinetic Parameter Area Under the Concentration Curve of I-DXd
Time frame: Cycle 1 Day 1 pre-dose up to Cycle 9 (and every 2 cycles thereafter up to 37 months) Day 1 pre-dose (each cycle is 21 days)
The Number of Participants Who Are Anti-Drug Antibody (ADA)-Positive At Any Time and Who Have A Treatment-emergent Anti-Drug Antibody
Time frame: Baseline up to approximately 37 months
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 1 Oct 2026.
- Individual participant dataSharing planned: Yes. De-identified individual participant data (IPD) on completed studies and applicable supporting clinical trial documents may be available upon request at https://vivli.org/. In cases where clinical trial data and supporting documents are provided pursuant to our company policies and procedures, Daiichi Sankyo will continue to protect the privacy of our clinical trial participants. Details on data sharing criteria and the procedure for requesting access can be found at this web address: https://vivli.org/ourmember/daiichi-sankyo/
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
(US) Daiichi Sankyo Contact for Clinical Trial Information contact
(Asia) Daiichi Sankyo Contact for Clinical Trial Information contact
Global Clinical Leader study director
Daiichi Sankyo
58 sites in 4 countries: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 1/2 study testing Ifinatamab deruxtecan, Atezolizumab and Carboplatin in people with Extensive Stage-small Cell Lung Cancer, run by Daiichi Sankyo at 58 sites in 4 countries.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 18 inclusion and 25 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: looking for participants now, as of the sponsor's last update on 1 Oct 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 58 sites in United States, Spain, Japan, France. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this combined phase mean?
Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.
Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact (US) Daiichi Sankyo Contact for Clinical Trial Information (9089926400, CTRinfo_us@daiichisankyo.com), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
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)). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 1 Oct 2026.