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A Pan-Cancer Retrospective Study on the Relationship Between Tumor Microenvironment Composition and Efficacy of Antibody-Based Antitumor Therapy

7 mei 2026 bijgewerkt door: Tianjin Medical University Cancer Institute and Hospital

This study is a single-center, retrospective, observational cohort investigation conducted at Tianjin Cancer Hospital that aims to evaluate the relationship between tumor microenvironment (TME) composition and the efficacy of antibody-based antitumor therapies-including monoclonal antibodies, antibody-drug conjugates, and bispecific antibodies-across a pan-cancer population comprising adult patients with breast, colorectal, head and neck squamous, lung, bladder, gastric, or pancreatic cancer treated between January 2020 and January 2026. Using real-world data extracted from electronic medical records, pathology archives, and laboratory systems, the study will analyze TME-related variables derived from tissue immunohistochemistry, molecular testing, and peripheral blood inflammatory markers in relation to clinical outcomes, with a primary endpoint of either progression-free survival or objective response rate to be finalized before database lock, and secondary endpoints including overall survival, disease control rate, and subgroup heterogeneity across cancer types and drug classes. Statistical analyses will employ Kaplan-Meier survival curves, Cox proportional hazards models, logistic regression, and appropriate multivariable adjustments with sensitivity analyses using propensity score methods, while the study will adhere to ethical standards under a waiver of informed consent due to its minimal-risk, retrospective design and strict de-identification of patient data.

Studie Overzicht

Toestand

Actief, niet wervend

Conditie

Studietype

Observationeel

Inschrijving (Geschat)

300

Contacten en locaties

In dit gedeelte vindt u de contactgegevens van degenen die het onderzoek uitvoeren en informatie over waar dit onderzoek wordt uitgevoerd.

Studie Locaties

China
- Tianjin Municipality
  - Tianjin, Tianjin Municipality, China
    - Tianjin Medical University Cancer Institute & Hospital

Deelname Criteria

Onderzoekers zoeken naar mensen die aan een bepaalde beschrijving voldoen, de zogenaamde geschiktheidscriteria. Enkele voorbeelden van deze criteria zijn iemands algemene gezondheidstoestand of eerdere behandelingen.

Geschiktheidscriteria

Leeftijden die in aanmerking komen voor studie

Volwassen
Oudere volwassene

Accepteert gezonde vrijwilligers

Nee

Bemonsteringsmethode

Kanssteekproef

Studie Bevolking

This retrospective cohort study includes adult patients (≥18 years) with pathologically confirmed breast, colorectal, head and neck squamous, lung, bladder, gastric, or pancreatic cancer who received at least one line of antibody-based antitumor therapy-including monoclonal antibodies, antibody-drug conjugates (ADCs), and bispecific antibodies-at Tianjin Cancer Hospital between January 2020 and January 2026. Eligible patients must have completed at least one cycle of efficacy evaluation with available radiologic or clinical response records, possess complete key clinical data (demographics, staging, treatment details, and follow-up outcomes), and have at least one tumor microenvironment (TME)-related assessment available from tissue immunohistochemistry, molecular testing, or peripheral blood inflammatory markers. Patients are excluded if they lack critical efficacy or exposure data, have a concurrent active malignancy with indistinguishable outcome attribution, present with severely i

Beschrijving

Inclusion Criteria:

Age 18 years or older
Pathologically confirmed diagnosis of breast cancer, colorectal cancer, head and neck squamous cell carcinoma, lung cancer, bladder cancer, gastric cancer, or pancreatic cancer
Received antibody-based antitumor therapy at this center, including monoclonal antibodies, antibody-drug conjugates, bispecific antibodies, or other antibody-based agents, either as monotherapy or combination therapy
Completed at least one post-treatment efficacy assessment or had evaluable radiographic or clinical documentation of treatment response
Available key clinical information, including demographics, tumor stage, line of therapy, treatment details, efficacy outcomes, or follow-up data
Available data for at least one tumor microenvironment-related indicator, including tissue immunohistochemistry, molecular testing, or peripheral blood inflammatory markers

Exclusion Criteria:

Missing key outcome information, including unevaluable treatment response or absence of follow-up or survival outcome records
Missing key exposure information, including antibody-based therapy drug name or timing/line of therapy
Concurrent active malignancy for which treatment outcomes cannot be clearly attributed to the cancer of interest
Severely incomplete or unverifiable medical records
Received only supportive or palliative care without exposure to antibody-based antitumor therapy

Studie plan

Dit gedeelte bevat details van het studieplan, inclusief hoe de studie is opgezet en wat de studie meet.

Hoe is de studie opgezet?

Ontwerpdetails

Aantal groepen / cohorten

Cohorten en interventies

Groep / Cohort
Adult patients with any of seven solid tumors who received antibody-based therapy (2020-2026) The study cohort comprises adult patients (≥18 years) with pathologically confirmed diagnoses of breast, colorectal, head and neck squamous, lung, bladder, gastric, or pancreatic cancer who received at least one line of antibody-based antitumor therapy-including monoclonal antibodies, antibody-drug conjugates (ADCs), or bispecific antibodies-at Tianjin Cancer Hospital between January 1, 2020, and January 1, 2026. Eligible cases must have at least one evaluable efficacy assessment and available tumor microenvironment-related data derived from tissue immunohistochemistry, molecular profiling, or peripheral blood inflammatory indices. The cohort is derived retrospectively from real-world electronic medical records, pathology archives, and laboratory information systems, with an anticipated sample size of approximately 200-500 analyzable cases to support multivariable modeling and subgroup explorations across cancer types and drug classes.

Groep / Cohort

Adult patients with any of seven solid tumors who received antibody-based therapy (2020-2026)

The study cohort comprises adult patients (≥18 years) with pathologically confirmed diagnoses of breast, colorectal, head and neck squamous, lung, bladder, gastric, or pancreatic cancer who received at least one line of antibody-based antitumor therapy-including monoclonal antibodies, antibody-drug conjugates (ADCs), or bispecific antibodies-at Tianjin Cancer Hospital between January 1, 2020, and January 1, 2026. Eligible cases must have at least one evaluable efficacy assessment and available tumor microenvironment-related data derived from tissue immunohistochemistry, molecular profiling, or peripheral blood inflammatory indices. The cohort is derived retrospectively from real-world electronic medical records, pathology archives, and laboratory information systems, with an anticipated sample size of approximately 200-500 analyzable cases to support multivariable modeling and subgroup explorations across cancer types and drug classes.

Wat meet het onderzoek?

Primaire uitkomstmaten

Uitkomstmaat	Maatregel Beschrijving	Tijdsspanne
Spearman correlation coefficient between tumor microenvironment marker levels and objective response rate/progression-free survival Tijdsspanne: January 2020 and January 2026	Tumor microenvironment markers, including NETosis-related markers and immune-cell composition, will be quantified by multiplex immunofluorescence as percentage of marker-positive area or percentage of marker-positive cells. Treatment efficacy will be assessed by objective response rate according to RECIST 1.1, and prognosis will be assessed by progression-free survival and overall survival. Spearman correlation coefficients will be calculated to evaluate the correlation between tumor microenvironment marker levels and treatment outcomes.	January 2020 and January 2026

Secundaire uitkomstmaten

Uitkomstmaat	Maatregel Beschrijving	Tijdsspanne
To evaluate the predictive value of TME indicators for efficacy outcomes (e.g., AUC, calibration, decision curve analysis, etc., to be conducted as data permit). Tijdsspanne: January 2020 and January 2026		January 2020 and January 2026
Subgroup-specific Spearman correlation coefficient between tumor microenvironment marker levels and objective response rate Tijdsspanne: January 2020 and January 2026	Tumor microenvironment markers will be measured in pretreatment tumor tissue by multiplex immunofluorescence and reported as the percentage of marker-positive cells or marker-positive area. Objective response rate will be defined as the percentage of patients with complete or partial response according to RECIST 1.1. Spearman correlation coefficients will be calculated within predefined subgroups, including cancer type, antibody target/type, and line of therapy.	January 2020 and January 2026
Interaction term odds ratio for clinical factors modifying the association between tumor microenvironment marker levels and objective response Tijdsspanne: January 2020 and January 2026	Tumor microenvironment markers will be measured in pretreatment tumor tissue using multiplex immunofluorescence and reported as the percentage of marker-positive cells or marker-positive area. Objective response will be defined as complete or partial response according to RECIST 1.1. Multivariable logistic regression will be used to assess interaction terms between tumor microenvironment marker levels and predefined clinical factors, with results reported as odds ratios and 95% confidence intervals.	January 2020 and January 2026
To construct a multivariable predictive model or risk stratification tool where feasible Tijdsspanne: January 2020 and January 2026		January 2020 and January 2026

Medewerkers en onderzoekers

Hier vindt u mensen en organisaties die betrokken zijn bij dit onderzoek.

Sponsor

Tianjin Medical University Cancer Institute and Hospital

Studie record data

Deze datums volgen de voortgang van het onderzoeksdossier en de samenvatting van de ingediende resultaten bij ClinicalTrials.gov. Studieverslagen en gerapporteerde resultaten worden beoordeeld door de National Library of Medicine (NLM) om er zeker van te zijn dat ze voldoen aan specifieke kwaliteitscontrolenormen voordat ze op de openbare website worden geplaatst.

Bestudeer belangrijke data

Studie start (Werkelijk)

1 maart 2026

Primaire voltooiing (Geschat)

30 juni 2026

Studie voltooiing (Geschat)