Mechanism Study to Investigate Difference in Efficacy of Neoadjuvant Chemoimmunotherapy in Lung Squamous Cell Carcinoma

Tang-Du Hospital

Status: Enrolling

Conditions: Neoadjuvant Chemoimmunotherapy; Tumor Microenvironment; Lung Squamous Cell Carcinoma

Treatments: Other: Pathological response assessment

Study type: Observational

Funder types: Other

Identifiers

NCT06436040

202311-10

Details and patient eligibility

About

To explore mechanisms of immunotherapy resistance and relation to changes in the TME before and after PD-1 blockade combined with chemotherapy

Full description

The biobank of thoracic surgery department of Tangdu Hospital collected pre-treatment tissues from patients during endoscopy. The investigators retrospectively summarized the clinical characteristics of these patients and patients with operable locally advanced lung squamous cell carcinoma were selected and followed.

The investigators plan to employ snRNA-seq and scRNA-seq respectively to profile 20 samples of paired pre-treatment and post-treatment tumors from ten patients (discovery cohort) to create a cell atlas for analysis, and spatial transcriptomics to examine 8 samples from four patients. In discovery cohort, estimated 5 patients achieve major pathological response (MPR) and 5 patients achieve non-MPR after NICB.

After analyzing the results of discovery cohort, the investigators will collect frozen tissues and formalin-fixed, paraffin-embedded (FFPE) tissue from our biobank for bulk RNA-seq analysis or immunohistochemistry (IHC) staining as validation cohort to further investigate the predictive value and biological significance of our markers.

Enrollment: 40 estimated patients

Sex: All

Ages: 40 to 80 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

1. aged 40 to 80 years;
2. had histologically confirmed LUSC with operable locally advanced stage
3. no prior anti-tumor therapy; received neoadjuvant immunotherapy consisting of three cycles of anti-PD-1 ICB plus nab-paclitaxel and carboplatin
4. pre-treatment tissues

Exclusion criteria

1. the presence of central nervous system metastases
2. the presence of immunodeficiency disease; previous therapies with immunosuppressants within 14 days prior to the initiation of study treatment;
3. uncontrolled hypertension
4. history of or having pulmonary fibrosis or interstitial lung disease

Trial design

40 participants in 2 patient groups

MPR(major pathological response)

Description:

defned as having no more than 10% residual viable tumor cells by routine hematoxylin and eosin (H\&E) staining after therapy

Treatment:

Other: Pathological response assessment

non-MPR

Description:

defned as having more than 10% residual viable tumor cells by routine hematoxylin and eosin (H\&E) staining after therapy

Treatment:

Other: Pathological response assessment