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Tracking T-Cell Responses to Evaluate Pembrolizumab Effectiveness in Advanced Non-Small Cell Lung Cancer

T-Cell Repertoire Sequencing: Assessing Pembrolizumab Efficacy in Advanced Non-Small Lung Cancer

Status
Not yet recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06951399
Enrollment
30
Registered
2025-04-30
Start date
2025-09-01
Completion date
2028-04-30
Last updated
2025-07-22

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

Conditions

NSCLC Adenocarcinoma, NSCLC (Advanced Non-small Cell Lung Cancer), NSCLC Stage IV Without EGFR/ALK Mutation

Keywords

metastatic NSCLC adenocarcinoma first-line pembrolizumab

Brief summary

This study includes patients with advanced non-small cell lung cancer (NSCLC) - either unresectable stage III or stage IV adenocarcinoma without actionable driver mutations - who are treated with pembrolizumab in combination with platinum-based doublet chemotherapy, irrespective of PD-L1 expression levels. The primary objective is to assess treatment response through integration of serial T-cell receptor (TCR) repertoire sequencing (Rep-seq), capturing longitudinal changes in T-cell clonality and diversity. These immune dynamics will be correlated with radiographic response assessed by RECIST 1.1, with the aim of improving the accuracy of response classification, including differentiation between progression, pseudo-progression, and hyperprogression. Additionally, circulating tumor DNA (ctDNA) levels will be measured longitudinally (pre-treatment and during treatment) to evaluate their potential as a complementary biomarker of disease burden and treatment efficacy in the context of chemo-immunotherapy.

Interventions

DRUGPembrolizumab (KEYTRUDA®)

IV Pembrolizumab 200 mg combined with pemetrexed and platinum (investigator's choice of cisplatin or carboplatin) every 3 weeks

Sponsors

MSD Pharmaceuticals LLC
CollaboratorINDUSTRY
Rabin Medical Center
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
BASIC_SCIENCE
Masking
NONE

Eligibility

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

Inclusion criteria

* Histologically confirmed diagnosis of NSCLC adenocarcinoma stage IV or unresectable stage III. * Have measurable disease based on RECIST 1.1. * Eastern Cooperative Oncology Group (ECOG) performance status of 0 to 1. * Adequate organ function.

Exclusion criteria

* Aberration in one or more of molecular drivers. * Has received prior systemic anti-cancer therapy prior to allocation. * Known active CNS metastases and/or carcinomatous meningitis. * Known additional malignancy.

Design outcomes

Primary

MeasureTime frameDescription
Change in T-cell Receptor (TCR) Repertoire Clonality and Diversity Relative to Disease Response Assessed by RECIST v1.1From date of randomization until the end of treatment, defined as a maximum of 35 cycles administered every 3 weeks (up to 2 years), or until disease progression, unacceptable toxicity, or withdrawal of consent, whichever occurs firstTCR sequencing will be performed on peripheral blood samples to assess clonality and diversity metrics. Changes in these metrics will be analyzed relative to clinical disease response evaluated according to RECIST version 1.1 criteria.

Countries

Israel

Contacts

Primary ContactAri Raphael, M.D
arire@clalit.org.il+972-3-9378000

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026