Abstract
Purpose
Major pathological response (MPR) has become a surrogate endpoint for overall survival (OS) in non-small cell lung cancer (NSCLC) after neoadjuvant therapy, however, the prognostic histologic features and optimal N descriptor after neoadjuvant therapy are poorly defined.
Methods
We retrospectively analyzed data from 368 NSCLC patients who underwent surgery after neoadjuvant chemotherapy (NAC) from January 2010 to December 2020. The percentage of residual viable tumors in the primary tumor, lymph nodes (LN), and inflammation components within the tumor stroma were comprehensively reviewed. The primary endpoint was OS.
Results
Of the 368 enrolled patients, 12.0% (44/368) achieved MPR in the primary tumor, which was associated with significantly better OS (HR, 0.36 0.17–0.77, p = 0.008) and DFS (HR = 0.59, 0.36–0.92, p = 0.038). In patients who did not have an MPR, we identified an immune-activated phenotype in primary tumors, characterized by intense tumor-infiltrating lymphocyte or multinucleated giant cell infiltration, that was associated with similar OS and DFS as patients who had MPR. Neoadjuvant pathologic grade (NPG), consisting of MPR and immune-activated phenotype, identified 30.7% (113/368) patients that derived significant OS (HR 0.28, 0.17–0.46, p < 0.001) and DFS (HR 0.44, 0.31–0.61, p < 0.001) benefit from NAC. Moreover, the combination of NPG and the number of positive LN stations (nS) in the multivariate analysis had a higher C-index (0.711 vs. 0.663, p < 0.001) than the ypTNM Stage when examining OS.
Conclusion
NPG integrated with nS can provide a simple, practical, and robust approach that may allow for better stratification of patients when evaluating neoadjuvant chemotherapy in clinical practice.
Graphical Abstract
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Data availability
Anonymized detailed clinico-pathological data and the R-Script used for data analysis are available upon request to the authors.
Abbreviations
- MPR:
-
Major pathological response
- NAC:
-
Neoadjuvant chemotherapy
- IASLC:
-
The International Association for the Study of Lung Cancer
- RVT:
-
Residual viable tumor
- RVT-T:
-
Residual viable tumor in primary tumors
- RVT-N:
-
Residual viable tumor in affected lymph nodes
- TILs:
-
Tumor-infiltrating lymphocytes
- MNGCs:
-
Multinucleated giant cells
- NPG:
-
Neoadjuvant pathologic grade
- OS:
-
Overall survival
- DFS:
-
Disease-free survival
- N+ numbers:
-
The number of metastatic LN
- nS:
-
The number of involved nodal stations
- LN harvested:
-
The total number of LN dissected
- NS:
-
The number of LN harvested stations
- N+ ratio:
-
The ratio of metastatic LN (N+ numbers/LN harvested)
- New N stage:
-
The new N descriptor proposed by the IASLC staging
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The authors would like to thank Dr. Hu Xiao for her support revising our manuscript.
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This work was supported by the National Natural Sciences Foundation (82103238), Beijing Hope Run Special Fund of Cancer Foundation of China (No. LC2022B19) and National Anti-Tumor Drug Surveillance System of National Cancer Center (DSS-YSF-2023022).
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Conceptualization, Data curation, Formal analyses, Methodology, Visualization, Writing—original draft: S.W.; Data Curation, Writing—Review: X.S., J.D., L.L.; Data Curation, Writing—Review & Editing, Funding acquisition: R.L.; Writing—Review: Z.Y.; Resources, Writing—Review: N.C.; Resources, Writing—Review: L.F.; Resources, Writing—Review: H.Y.; Resources, Writing—Review: Z.L., D.J., H.H.; Writing—Review: Y.W.; Resources, Writing—Review & Editing: L.Y.; Conceptualization, Data curation, Formal analyses, Methodology, Project administration, Resources, Supervision, Writing—original draft, Writing—Review & Editing: L.Y. & Y.M.
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Wang, S., Sun, X., Dong, J. et al. Pathological response and tumor stroma immunogenic features predict long-term survival in non-small cell lung cancer after neoadjuvant chemotherapy. Cell Oncol. (2024). https://doi.org/10.1007/s13402-023-00914-6
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DOI: https://doi.org/10.1007/s13402-023-00914-6