Publication-only abstracts (abstract number preceded by an "e"), published in conjunction with the 2019 ASCO Annual Meeting but not presented at the Meeting, can be found online only.
Autoantibodies indicating diagnostic or prognostic value in NSCLC patients were identified by protein microarrays.
Metastatic Non-Small Cell Lung Cancer
Lung Cancer—Non-Small Cell Metastatic
2019 ASCO Annual Meeting
J Clin Oncol 37, 2019 (suppl; abstr e20638)
Author(s): Rongrong Luo, Caixia Liang, Jiarui Yao, Di Wu, Zhishang Zhang, Yuankai Shi, Xiaohong Han; Department of Clinical Laboratory, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China; Department of Medical Oncology, Beijing Key Laboratory of Clinical Study on Anticancer Molecular Targeted Drugs, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China; National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing Key Laboratory of Clinical Study on Anticancer Molecular Targeted Drugs, Beijing, China
Background: Autoantibodies(AAbs) have been recently recognized as auxiliary diagnostic biomarkers in lung cancer. Applying high-throughput protein microarrays to address AAbs profile of non-small cell lung cancer(NSCLC) is rarely studied. Herein, we aimed to discover AAbs possessing diagnostic or prognostic value in NSCLC patients. Methods: We collected pretreatment plasma samples and survival data of 258 NSCLC patients and 343 controls. The advanced NSCLC patients were divided into subgroups according to different epidermal growth factor receptor(EGFR) gene status, therapies and therapeutic response. We utilized human proteomic(HuprotTM) microarrays to screen differential AAbs and customized microarrays to validate. Statistical methods were Chi-square test and ROC analysis. Results: We found 8 AAbs(p < 0.05 or AUC > 0.6) with underlying diagnostic or prognostic value of NSCLC patients after screening and validation. The positive rate of 4 AAbs including anti-TP53, XAGE1A1,2 and KCNAB1 in NSCLC group were higher than that in controls. Among them, anti-KCNAB1 increased in early-stage group compared with controls, indicating early diagnostic value. The other three AAbs level raised as disease progressed to advanced-stage. For advanced NSCLC patients, the differential AAbs of EGFR+ patients receiving either first generation EGFR-tyrosine kinase inhibitor (EGFR-TKI) therapy or chemotherapy were identified with higher positive rate in poor response subgroups compared with good response subgroups(Table1). However, for EGFR- patients with chemotherapy, the differential AAbs in different response subgroups were not found. Conclusions: We found AAbs with underlying diagnostic or prognostic value for advanced NSCLC patients receiving EGFR-TKI or chemotherapy, which should be further investigated to confirm their clinical value.
|EGFR+ TKI (71)*|
*EGFR+/-:EGFR active mutation/wild-type;(advanced-stage NSCLC) good response: PFS≥10months, poor response: PFS < 10months.