ClinicalTrials.gg
Active, not recruitingNCT03319940Updated Nov 4, 2026

Study Evaluating Safety, Tolerability and Pharmacokinetics (PK) of Tarlatamab in Adults With Small Cell Lung Cancer (SCLC)

A Phase 1 interventional study of Tarlatamab and Pembrolizumab in Small Cell Lung Carcinoma, sponsored by Amgen. Active, not recruiting at 39 sites in 13 countries. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-11-04.

Sponsored by Amgen · Phase 1, Interventional, and Treatment

Updated Nov 4, 2026Primary completion movedGo to Updates ↓
Phase
Phase 1
Study type
Interventional
Enrollment
269
Allocation
Non-randomized
Ages
18 Years and older
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 18 studies testing AMG 757 in Small Cell Lung Carcinoma — 9 open to participants now, 17 under way, 6 of them phase 3. AMG 757 · Small Cell Lung Carcinoma.

Enrollment
7th of 18
269 · median 221
Started
2017
the only one that year
Phase 1
4 of 18
2 open now
Primary completion
2027-12
later than 5 of 16 live
Registered
1st of 18
by date
Lead sponsor
11 of 18
Amgen

Among the 18 studies testing AMG 757 in Small Cell Lung Carcinoma, this one is the 7th largest by enrollment, is the only one that started in 2017, is one of 4 in phase 1, reaches primary completion later than 5 of the 16 other live ones, and was the 1st registered.

Small Cell Lung Carcinoma

1,301 studies on the registry are indexed under Small Cell Lung Carcinoma; 367 are open to participants now.

Browse Small Cell Lung Carcinoma studies →

Open to participants now

9 of the 18 studies testing AMG 757 in Small Cell Lung Carcinoma are open now, in 12 countries. Recruiting first, the newest first:

4 more — sign in →

By country, each count listing its studies:

All 9 open studies →

About AMG 757

AMG 757: first FDA approval 2024 (IMDELLTRA), first EMA approval 2026. What it is approved for, and how studies give it, is on its page →

Who these studies take

Of the 264 Small Cell Lung Carcinoma studies recruiting now, 173 (66%) set no upper age limit and 67 (25%) stop at 75 or younger; 3 take children under 18; 8 take healthy volunteers.

This study: 18 Years and older · all sexes · no healthy volunteers.

The full table on the hub →

This tab as a report to print or save as PDF → With an account.

Was this useful?
Watch this landscapeDownload CSVNarrow it in search →With an account: a weekly mail of what changed among 18 studies testing AMG 757 in Small Cell Lung Carcinoma, or all of them as a file.
02

Study summary

A study to assess the safety, tolerability, and PK of tarlatamab in participants with SCLC

Read the detailed description

This is an open-label, ascending, multiple doses, phase 1 study evaluating tarlatamab monotherapy, in combination with anti-PD1 therapy and with additional cytokine release syndrome (CRS) mitigation strategies. Tarlatamab will be administered as a short term intravenous (IV) infusion in participants with SCLC. Tarlatamab is a Half-Life Extended (HLE) Bispecific T cell engager (BiTE®) targeting delta-like protein 3 (DLL3)

03

Conditions studied

  • Small Cell Lung Carcinoma

Keywords

  • Half-Life Extended (HLE) Bispecific T cell engager (BiTE®)
  • Delta-like protein 3 (DLL3)
  • Tarlatamab
  • Oncology
  • Immunology
04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Participant has provided prior to initiation of any study-specific activities/procedures
  • Age greater than or equal to 18 years old at the time of signing the informed consent
  • or cytologically confirmed SCLC. For parts A, C, D, E, F, and G: small cell lung cancer (R/R SCLC) who progressed or recurred following platinum-based regimen
  • (ECOG) performance status of 0-2
  • Participants with treated are eligible provided they meet defined criteria
  • Adequate organ function as defined in protocol

Exclusion criteria

Exclusion Criteria:

  • History of other within the past 2 years prior to first dose of tarlatamab with exceptions
  • Major surgery within 28 days of first dose tarlatamab
  • Untreated (includes new lesions or progression in previously treated lesions) or symptomatic and (regardless of symptomatic or not).
  • Prior anti-cancer therapy: at least 28 days must have elapsed between any prior anti-cancer therapy and first dose of tarlatamab with the following exceptions: participants who received conventional chemotherapy are eligible if at least 14 days have elapsed and if all treatment-related toxicity has been resolved to Grade less than or equal to 1; and prior palliative radiotherapy must have been completed at least 7 days before the first dose of tarlatamab
  • Participants who experienced severe, life-threatening or recurrent (Grade 2 or higher) immune-mediated AEs or infusion-related reactions including those that lead to permanent discontinuation while on treatment with immune-oncology agents
  • Has evidence of interstitial lung disease or active, non-infectious pneumonitis
  • Has a diagnosis of immunodeficiency or is receiving systemic therapy or any other form of therapy within 7 days prior to the first dose of tarlatamab
  • Part C only: history of solid organ transplantation or active disease that has required systemic treatment within the past 2 years
  • Participant 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 product administration
Terms in these criteria, in plain language(11)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Histologically or cytologically confirmed

The diagnosis was confirmed by looking at a sample under a microscope: tissue from a biopsy or surgery (histology), or cells from a fluid or needle sample (cytology).

Your pathology report is the document that shows this.

Relapsed and refractory

Relapsed: the illness came back after treatment had worked. Refractory: it did not respond to treatment, or stopped responding while still on it.

ECOG performance status

A scale of how much an illness limits everyday activity. For people being assessed to join a study, scores run from 0 (fully active) to 4; lower is more active.

0
Fully active, no restrictions.
1
Limited in strenuous activity, but walking and able to do light work, such as housework or office work.
2
Walking and able to look after yourself, but unable to work; up and about more than half of waking hours.
3
Able to look after yourself only in part; in bed or a chair more than half of waking hours.
4
Unable to look after yourself at all; in bed or a chair all day.

Studies most often ask for 0–1 or 0–2. Your doctor gives the score; the WHO scale uses the same steps. The full scale also has 5, which records death.

Brain metastases

Cancer deposits in the brain from a cancer that started elsewhere in the body (CNS metastases include the spinal cord).

Studies differ: some leave out any brain metastases, some accept ones treated and stable for some weeks. Check what this study allows.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

Leptomeningeal disease

Cancer that has spread to the leptomeninges, the thin layers covering the brain and spinal cord, and the fluid between them. It is not the same as brain metastases.

Criteria often treat it separately, and many studies leave it out even where treated brain metastases are allowed.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

Immunosuppression

A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.

Read whether the line is about a condition or about medicines, and which medicines and doses it means.

Autoimmune disease

A condition in which the immune system attacks the body’s own tissues, such as rheumatoid arthritis, lupus, psoriasis, type 1 diabetes or inflammatory bowel disease.

Immunotherapy studies often leave out active autoimmune disease, and some name exceptions, such as thyroid disease on replacement hormone. Check the exceptions this study lists.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

05

Study design

Phase
Phase 1
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
269 participants (actual)

Study arms

  • Experimental
    Part A

    Tarlatamab monotherapy

    Drug: Tarlatamab

  • Experimental
    Part C

    Tarlatamab with Pembrolizumab

    Drug: Tarlatamab · Drug: Pembrolizumab

  • Experimental
    Part D

    Tarlatamab with additional CRS mitigation strategies

    Drug: Tarlatamab · Drug: CRS Mitigation Strategies

  • Experimental
    Part E

    Tarlatamab administration with 24-hour monitoring

    Drug: Tarlatamab

  • Experimental
    Part F

    Tarlatamab administered in outpatient infusion centers with 8-hour monitoring Optional wearable digital device substudy (US sites only)

    Drug: Tarlatamab

  • Experimental
    Part G

    Tarlatamab additional dosing schedule Optional wearable digital device substudy (US sites only)

    Drug: Tarlatamab

Interventions

  • Tarlatamab is a Half-Life Extended (HLE) Bispecific T cell engager (BiTE®) targeting delta-like protein 3 (DLL3)

  • Pembrolizumab is a potent humanized IgG4 monoclonal antibody (mAb) with high specificity of binding to the PD-1 receptor, thus inhibiting its interaction with PD-L1 and PD-L2

  • DrugCRS Mitigation Strategies

    Participants will be treated with one of the CRS mitigation strategies.

06

What researchers measure

Primary outcomes

  1. Number of participants with dose limiting toxicities (DLT) for all indications

    Time frame: 6 months

  2. Number of participants with treatment-emergent adverse events (AEs) for all indications

    Time frame: 4 years

  3. Number of participants with treatment-related AEs for all indications

    Time frame: 4 years

  4. Number of participants with clinically significant changes in vital signs for all indications

    Time frame: 4 years

  5. Number of participants with significant changes in electrocardiogram (ECG) for all indications

    Time frame: 4 years

  6. Number of participants with significant changes in physical examinations for all indications

    Time frame: 4 years

  7. Number of participants with significant changes in clinical laboratory tests for all indications

    Time frame: 4 years

Secondary outcomes

  1. Maximum observed concentration (Cmax) following intravenous administration for all indications

    Time frame: 4 years

  2. Minimum observed concentration (Cmin) following intravenous administration for all indications

    Time frame: 4 years

  3. Area under the concentration-time curve (AUC) over the 2 week dosing interval for all indications

    Time frame: 4 years

  4. Accumulation following multiple dosing for all indications

    Time frame: 4 years

  5. Half-life (t1/2) following intravenous administration for all indications

    Time frame: 4 years

  6. Objective Response (OR) per modified Response Evaluation Criteria in Solid Tumors (RECIST) 1.1

    Only for parts A, D, E, F, and G

    Time frame: 4 years

  7. Duration of Response (DOR) for all indications

    Time frame: 4 years

  8. Time to Response (TTR)

    Time frame: 4 years

  9. 9-month Progression-Free Survival (PFS) for all indications

    Time frame: 9 months

  10. 9-month Overall Survival (OS) for all indications

    Time frame: 9 months

07

Study locations

39 sites
08

References and documents

Publications

  • Owen DH, Giffin MJ, Bailis JM, Smit MD, Carbone DP, He K. DLL3: an emerging target in small cell lung cancer. J Hematol Oncol. 2019 Jun 18;12(1):61. doi: 10.1186/s13045-019-0745-2. PubMed 31215500 ↗
  • Dowlati A, Hummel HD, Champiat S, Olmedo ME, Boyer M, He K, Steeghs N, Izumi H, Johnson ML, Yoshida T, Bouchaab H, Borghaei H, Felip E, Jost PJ, Gadgeel S, Chen X, Yu Y, Martinez P, Parkes A, Paz-Ares L. Sustained Clinical Benefit and Intracranial Activity of Tarlatamab in Previously Treated Small Cell Lung Cancer: DeLLphi-300 Trial Update. J Clin Oncol. 2024 Oct 10;42(29):3392-3399. doi: 10.1200/JCO.24.00553. Epub 2024 Aug 29. PubMed 39208379 ↗
  • Paz-Ares L, Champiat S, Lai WV, Izumi H, Govindan R, Boyer M, Hummel HD, Borghaei H, Johnson ML, Steeghs N, Blackhall F, Dowlati A, Reguart N, Yoshida T, He K, Gadgeel SM, Felip E, Zhang Y, Pati A, Minocha M, Mukherjee S, Goldrick A, Nagorsen D, Hashemi Sadraei N, Owonikoko TK. Tarlatamab, a First-in-Class DLL3-Targeted Bispecific T-Cell Engager, in Recurrent Small-Cell Lung Cancer: An Open-Label, Phase I Study. J Clin Oncol. 2023 Jun 1;41(16):2893-2903. doi: 10.1200/JCO.22.02823. Epub 2023 Jan 23. PubMed 36689692 ↗
  • Chiang AC, Olmedo Garcia ME, Carlisle JW, Dowlati A, Reguart N, Felip E, Jost PJ, Steeghs N, Stec R, Gadgeel SM, Loong HH, Jiang W, Hamidi A, Parkes A, Paz-Ares L. Safety of tarlatamab with 6-8-h outpatient versus 48-h inpatient monitoring during cycle 1: DeLLphi-300 phase 1 substudy. ESMO Open. 2025 Apr;10(4):104538. doi: 10.1016/j.esmoop.2025.104538. Epub 2025 Apr 4. PubMed 40187110 ↗

Individual participant data

Plan to share: Yes — De-identified individual patient data for variables necessary to address the specific research question in an approved data sharing request.

Supporting information: Study protocol, Statistical analysis plan, Informed consent form, Clinical study report

Time frame: Data sharing requests relating to this study will be considered beginning 18 months after the study has ended and either 1) the product and indication have been granted marketing authorization in both the US and Europe or 2) clinical development for the product and/or indication discontinues and the data will not be submitted to regulatory authorities. There is no end date for eligibility to submit a data sharing request for this study.

Access criteria: Qualified researchers may submit a request containing the research objectives, the Amgen product(s) and Amgen study/studies in scope, endpoints/outcomes of interest, statistical analysis plan, data requirements, publication plan, and qualifications of the researcher(s). In general, Amgen does not grant external requests for individual patient data for the purpose of re-evaluating safety and efficacy issues already addressed in the product labelling. Requests are reviewed by a committee of internal advisors. If not approved, a Data Sharing Independent Review Panel will arbitrate and make the final decision. Upon approval, information necessary to address the research question will be provided under the terms of a data sharing agreement. This may include anonymized individual patient data and/or available supporting documents, containing fragments of analysis code where provided in analysis specifications. Further details are available at the URL below.

Data sharing details ↗ · www.amgen.com

09

Timeline

1 registry update since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedDate before it movedWhere the date was before it movedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started Dec 2017 (actual). Primary completion is estimated for Dec 2027, 120 months after the start.

Of 111 industry-sponsored phase 1 interventional studies under Small Cell Lung Carcinoma, half reached primary completion within 44 months of starting (the median), counting those still running; a quarter within 29 and three quarters within 63. This study's planned 120 months is above that.

Counting every sponsor, half of 143 studies reached it within 46 months; a quarter within 29 and three quarters within 64.

Primary completion moved once since we started tracking on Sep 25, 2026: Dec 2026 → Dec 2027, on Nov 4, 2026.

Earlier changes are on the record history on ClinicalTrials.gov ↗

How these figures are worked out, and which studies are left out of them.

Registered
Oct 5, 2017
First posted
Oct 24, 2017
StartActual
Dec 26, 2017
Primary completionEst.
Dec 31, 2027was Dec 2026
CompletionEst.
Dec 31, 2027
Last update
Nov 4, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
Primary completion
Dec 31, 2026→Dec 31, 2027
Nov 4, 2026
Show all 1 update
  1. Nov 4, 2026
    Primary completion Dec 31, 2026→Dec 31, 2027
    + 1 other change: verification date

From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗

10

Registry details

Key details

Study ID
NCT03319940
Lead sponsor
Amgen
Responsible party
Sponsor
First posted
Oct 24, 2017
Start date
Dec 26, 2017
Primary completion
Dec 31, 2027 (estimated)
Completion
Dec 31, 2027 (estimated)
Last update
Nov 4, 2026

Study contacts

MD
study director · Amgen

Oversight

Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is active, not recruiting, as verified in Nov 2026. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Studies of the drug tested here: AMG 757

Start the discussion