Predictions of PD-L1 Expression Based on CT Imaging Features in Lung Squamous Cell Carcinoma
- Author:
Seong Hee YEO
1
;
Hyun Jung YOON
;
Injoong KIM
;
Yeo Jin KIM
;
Young LEE
;
Yoon Ki CHA
;
So Hyeon BAK
Author Information
- Publication Type:Original Article
- From: Journal of the Korean Society of Radiology 2024;85(2):394-408
- CountryRepublic of Korea
- Language:English
-
Abstract:
Purpose:To develop models to predict programmed death ligand 1 (PD-L1) expression in pulmonary squamous cell carcinoma (SCC) using CT.
Materials and Methods:A total of 97 patients diagnosed with SCC who underwent PD-L1 expression assay were included in this study. We performed a CT analysis of the tumors using pretreatment CT images. Multiple logistic regression models were constructed to predict PD-L1 positivity in the total patient group and in the 40 advanced-stage (≥ stage IIIB) patients. The area under the receiver operating characteristic curve (AUC) was calculated for each model.
Results:For the total patient group, the AUC of the ‘total significant features model’ (tumor stage, tumor size, pleural nodularity, and lung metastasis) was 0.652, and that of the ‘selected feature model’ (pleural nodularity) was 0.556. For advanced-stage patients, the AUC of the ‘selected feature model’ (tumor size, pleural nodularity, pulmonary oligometastases, and absence of interstitial lung disease) was 0.897. Among these factors, pleural nodularity and pulmonary oligometastases had the highest odds ratios (8.78 and 16.35, respectively).
Conclusion:Our model could predict PD-L1 expression in patients with lung SCC, and pleural nodularity and pulmonary oligometastases were notable predictive CT features of PD-L1.
