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Subcutaneous Tarlatamab in Participants With Extensive Stage Small Cell Lung Cancer (DeLLphi-308)

A Phase 1b Study Evaluating the Safety, Tolerability, Pharmacokinetics, and Preliminary Anti-Tumor Activity of Subcutaneous Tarlatamab in Subjects With Extensive Stage Small Cell Lung Cancer (DeLLphi-308)

Status
Recruiting
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06598306
Acronym
DeLLphi-308
Enrollment
220
Registered
2024-09-19
Start date
2024-10-07
Completion date
2030-04-24
Last updated
2026-06-26

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

Small Cell Lung Cancer

Brief summary

The primary objective of this study is to evaluate the safety and tolerability of subcutaneous (SC) tarlatamab.

Interventions

DRUGTarlatamab

Administered by SC injection.

Sponsors

Amgen
Lead SponsorINDUSTRY
BeOne Medicines
CollaboratorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
BASIC_SCIENCE
Masking
NONE

Eligibility

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

Inclusion criteria

* Participants ≥ 18 years of age (or ≥ legal adult age within country if it is older than 18 years) at time of signing informed consent. * Participants with histologically or cytologically confirmed ES-SCLC that progressed or recurred following at least one line of platinum-based anti-cancer therapy for SCLC. Note: Participants with prior treatment for LS-SCLC should have also received another regimen for their recurrent, ES-SCLC disease. * Eastern Cooperative Oncology Group (ECOG) Performance Status (PS) of 0 or 1. * Participants must have adequate organ function (cardiac, pulmonary, kidney, and liver). * Participants must be able to have SC injections administered in the abdomen. * Participants without measurable disease or tumor tissue (fresh biopsy or archival) available may be permitted after discussion with and approval by Amgen Medical Monitor.

Exclusion criteria

* Participants that have received prior DLL3 targeted therapy. * Participants with untreated or symptomatic brain metastases or those requiring therapy with steroids. * Note: Participants with asymptomatic brain metastatic lesions are allowed following definitive treatment (Amgen Medical Monitor may approve untreated, asymptomatic brain metastasis if local therapy is not required per investigator judgment). * Participants with leptomeningeal disease. * Participants with baseline oxygen requirement.

Design outcomes

Primary

MeasureTime frame
Number of Participants with Dose-limiting toxicities (DLTs)Up to day 21
Number of Participants with Treatment-emergent Adverse Events (TEAEs)Up to approximately 24 months
Number of Participants with Changes in Vital SignsUp to approximately 24 months
Number of Participants with Clinically Significant Changes in Clinical Laboratory TestsUp to approximately 24 months

Secondary

MeasureTime frame
Maximum Serum Concentration (Cmax) of TarlatamabUp to approximately 12 months
Serum Concentration Prior to Dosing (Ctrough) of TarlatamabUp to approximately 12 months
Time to Cmax (Tmax) of TarlatamabUp to approximately 12 months
Area Under the Concentration-time Curve (AUC) of TarlatamabUp to approximately 12 months
Objective Response (OR) per Response Evaluation Criteria in Solid Tumors (RECIST) 1.1Up to approximately 24 months
Duration of Response (DOR) per RECIST 1.1Up to approximately 24 months
Time to Response (TTR) per RECIST 1.1Up to approximately 24 months
Progression-free Survival (PFS) per RECIST 1.1Up to approximately 24 months
Time to Progression per RECIST 1.1Up to approximately 24 months
Time to Subsequent TherapyUp to approximately 24 months
Overall Survival (OS)Up to approximately 24 months
Number of Participants with Anti-tarlatamab Antibody FormationUp to approximately 24 months

Countries

Australia, Belgium, China, Germany, Japan, Poland, Spain, Switzerland, Turkey (Türkiye), United States

Contacts

CONTACTAmgen Call Center
medinfo@amgen.com866-572-6436
STUDY_DIRECTORMD

Amgen

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jun 27, 2026