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Clinical Trial for Safety and Effectiveness Evaluation of Tarlatamab (AMG757) with Etoposide, Carboplatin and Atezolizumab in Transformed Small Cell Lung Cancer Patients from Adenocarcinoma after EGFR TKI Treatment

Clinical Trial for Safety and Effectiveness Evaluation of Tarlatamab (AMG757) with Etoposide, Carboplatin and Atezolizumab in Transformed Small Cell Lung Cancer Patients from Adenocarcinoma after EGFR TKI Treatment: Phase II Multicenter Clinical Trial

Status
Recruiting
Phases
Phase 2
Study type
Interventional
Source
CRIS
Registry ID
KCT0010234
Enrollment
50
Registered
2025-02-25
Start date
2025-05-12
Completion date
Unknown
Last updated
2026-01-27

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

Conditions

None listed

Interventions

Drug : Concomitant Chemotherapy Phase: for 4 cycles Q3W Cycle 1 (21-day cycle): Atezolizumab 1200 mg IV followed by carboplatin to match AUC 5.0 IV on day 1 and then etoposide 100 mg/m2 IV on day 1- d

Sponsors

Samsung Medical Center
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1) Histologically confirmed SCLC and no prior systemic treatment for SCLC 2) Patient initially diagnosed with activating EGFR mutation (L858R, Del 19) and treated with any kind of EGFR TKI. 3) Confirmed SCLC transformation right after EGFR TKI treatment failure. 4) Age =18 years 5) ECOG performance status of 0 to 1 6) Had at least one measurable lesion. 7) Adequate organ function • Absolute neutrophil count = 1.5 x 10^9/L • Platelet count = 100 x 10^9/L • Hemoglobin = 9 g/dL • Estimated glomerular filtration rate based on Modification of Diet in Renal Disease calculation > 30 mL/min/1.73 m2 • Aspartate aminotransferase and alanine aminotransferase = 3 x upper limit of normal (ULN) (or = 5 x ULN for subjects with liver involvement) • Total bilirubin = 1.5 x ULN (or = 2 x ULN for subjects with liver metastases) • Prothrombin time (PT)/international normalized ratio and partial thromboplastin time or activated partial thromboplastin time = 1.5 x institutional ULN Note: Subjects on stable anticoagulation therapy are allowed. 8) Pulmonary function: No clinically significant pleural effusion at the timepoint of screening. Pleural effusion with no significant symptom is allowed for enrollment. 9) Cardiac function: Cardiac ejection fraction = 50% 10) Female subjects must either be of non-reproductive potential 11) Female subject with reproductive potential can be enrolled with agreement to following guidance. - subject uses contraception during treatment and through 60 days after receiving last dose of tarlatamab or for 3 months after last dose of carboplatin and/or etoposide and 5 months after last dose of atezolizumab. 12) Subject is willing and able to comply with the protocol 13) Signed written informed consent

Exclusion criteria

Exclusion criteria: 1) Treated with additional chemotherapy after confirmed with transformed SCLC. 2) Previously exposed to the immune checkpoint inhibitor treatment. 3) Untreated symptomatic brain metastases or leptomeningeal disease. - Asymptomatic brain metastases can be enrolled per investigator decision 4) Uncontrolled systemic illness including uncontrolled hypertension, active bleeding, or active infection. 5) Past medical history of interstitial lung disease, drug induced interstitial lung disease, radiation pneumonitis which required steroid treatment, active non-infectious pneumonitis 6) Active or prior documented autoimmune or inflammatory disorders 7) Myocardial infarction and/or symptomatic congestive heart failure (New York Heart Association > class II) within 6 months prior to first dose of study treatment 8) History of solid organ transplant. 9) Major surgical procedures within 28 days prior to first dose of study treatment. 10) History of allergic reactions or acute hypersensitivity reactions to antibody therapies, platinum chemotherapy, or etoposide. 11) Disagree to the guidance of contraception during the study

Design outcomes

Primary

MeasureTime frame
Progression free survival

Secondary

MeasureTime frame
Objective response rate;Duration of response;Overall survival

Countries

Korea, Republic of

Contacts

Public ContactSe-Hoon Lee

Samsung Medical Center

sehoon.lee119@gmail.com+82-2-2148-7663

Outcome results

None listed

Source: CRIS (via WHO ICTRP) · Data processed: Feb 4, 2026