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First-Line Tarlatamab in Combination With Carboplatin, Etoposide, and PD-L1 Inhibitor in Subjects With Extensive Stage Small Cell Lung Cancer (ES-SCLC)

A Phase 1b Study Evaluating the Safety and Efficacy of First-Line Tarlatamab in Combination With Carboplatin, Etoposide, and PD-L1 Inhibitor in Subjects With Extensive Stage Small Cell Lung (DeLLphi-303)

Status
Active, not recruiting
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05361395
Enrollment
184
Registered
2022-05-04
Start date
2022-08-24
Completion date
2030-05-30
Last updated
2026-09-09

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Extensive Stage Small Cell Lung Cancer

Keywords

Extensive Stage Small Cell Lung Cancer, ES-SCLC, SCLC, Lung Cancer, AMG 757, Bi-Specific T-Cell Engager, BiTE, Inmunotherapy, Immunooncology, Inmuno-oncology, DLL3, Delta Like Protein 3

Brief summary

This is a phase 1b study to assess the safety and tolerability of tarlatamab in combination with programmed death ligand (PD-L1) inhibition with and without chemotherapy.

Interventions

DRUGTarlatamab

Tarlatamab will be administered as an intravenous (IV) infusion.

DRUGCarboplatin

Carboplatin will be administered as an intravenous (IV) infusion.

DRUGEtoposide

Etoposide will be administered as an intravenous (IV) infusion.

DRUGAtezolizumab

Atezolizumab will be administered as an intravenous (IV) infusion.

DRUGDurvalumab

Durvalumab will be administered as an intravenous (IV) infusion.

Sponsors

Amgen
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Participant has provided informed consent prior to initiation of any study specific activities/procedures. * Age greater than or equal to 18 years old at the same time of signing the informed consent. * Histologically or cytologically confirmed Extensive Stage Small Cell Lung Cancer (ES-SCLC) and no prior systemic treatment for ES-SCLC. * Participants with prior treatment for limited-stage SCLC (LS-SCLC) are permitted. * Eastern Cooperative Oncology Group (ECOG) 0 to 1. * Participants with treated asymptomatic brain metastases are eligible provided they meet defined criteria. * Adequate organ function as defined in protocol.

Exclusion criteria

* History of other malignancy within the past 2 years with exceptions. * Major surgery within 28 days of study day 1. * Untreated or symptomatic brain metastases and leptomeningeal disease. * Participants who experienced recurrent grade 2 pneumonitis or severe or life-threatening immune-mediated adverse events or infusion-related reactions including those that lead to permanent discontinuation while on treatment with immuno-oncology agents. * History of immune-related colitis. * History or evidence of interstitial lung disease or active, non-infectious pneumonitis. * Has a diagnosis of immunodeficiency or is receiving systemic steroid therapy or any other form of immunosuppressive therapy within 7 days prior to the first dose of study treatment. * Participants with symptoms and/or clinical signs and/or radiographic signs that indicate an acute and/or uncontrolled active systemic infection within 7 days prior to the first dose of study treatment * Participant has known active infection requiring parenteral antibiotic treatment. Upon completion of parenteral antibiotics and resolution of symptoms, the participant may be considered eligible for the study from an infection standpoint * NOTE: Simple urinary tract infections and uncomplicated bacterial pharyngitis are permitted if responding to an active treatment and after consultation with Medical Monitor. Participants requiring oral antibiotics who have been afebrile for \>24 hours, have no leukocytosis, nor clinical signs of infection are eligible. Screening for chronic infectious conditions is not required. * History of hypophysitis or pituitary dysfunction. * History of solid organ transplantation or allogeneic hematopoietic stem cell transplantation. * Active autoimmune disease that has required systemic treatment (except replacement therapy) within the past 2 years or any other diseases requiring immunosuppressive therapy while on study. Participants with Type I diabetes, vitiligo, psoriasis, hypo- or hyper-thyroid disease not requiring immunosuppressive treatment are permitted.

Design outcomes

Primary

MeasureTime frame
Number of Participants with a Dose Limiting Toxicity (DLT)24 months
Number of Participants with Treatment-emergent Adverse Events (TEAE)24 months
Number of Participants with Treatment-related Adverse Events24 months
Number of Participants with Clinically Significant Changes in Vital Signs24 months
Number of Participants with Clinically Significant Changes in Electrocardiogram (ECG) Measurements24 months
Number of Participants with Clinically Significant Changes in Clinical Laboratory Tests24 months

Secondary

MeasureTime frameDescription
6-month Progression-free Survival (PFS)24 months
Objective Response (OR)24 monthsPer modified Response Evaluation Criteria in Solid Tumors (RECIST) 1.1
Duration of Response (DOR)24 months
Disease Control Rate(DCR)24 months
Overall Survival (OS)24 months
Serum Concentration of Tarlatamab24 months

Countries

Australia, Belgium, Canada, Denmark, France, Germany, Israel, Italy, Japan, Netherlands, South Korea, Spain, Switzerland, Taiwan, United States

Contacts

STUDY_DIRECTORMD

Amgen

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Sep 10, 2026