Cancer Research and Treatment

Original Articles

Lung and Thoracic cancer

Clinical Validation of the Unparalleled Sensitivity of the Novel Allele-Discriminating Priming System Technology–Based EGFR Mutation Assay in Patients with Operable Non–Small Cell Lung Cancer: Il-Hyun Park, Dae-Soon Son, Yoon-La Choi, Ji-Hyeon Choi, Ji-Eun Park, Yeong Jeong Jeon, Minseob Cho, Hong Kwan Kim, Yong Soo Choi, Young Mog Shim, Jung Hee Kang, Suzy Park, Jinseon Lee, Sung-Hyun Kim, Byung-Chul Lee, Jhingook Kim; Cancer Res Treat. 2024;56(1):81-91. Published online June 20, 2023; DOI: https://doi.org/10.4143/crt.2023.408

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Purpose
Recently, we developed allele-discriminating priming system (ADPS) technology. This method increases the sensitivity of conventional quantitative polymerase chain reaction up to 100 folds, with limit of detection, 0.01%, with reinforced specificity. This prospective study aimed to develop and validate the accuracy of ADPS epidermal growth factor receptor (EGFR) Mutation Test Kit using clinical specimens.
Materials and Methods
In total 189 formalin-fixed paraffin-embedded tumor tissues resected from patients with non–small cell lung cancer were used to perform a comparative evaluation of the ADPS EGFR Mutation Test Kit versus the cobas EGFR Mutation Test v2, which is the current gold standard. When the two methods had inconsistent results, next-generation sequencing–based CancerSCAN was utilized as a referee.
Results
The overall agreement of the two methods was 97.4% (93.9%-99.1%); the positive percent agreement, 95.0% (88.7%-98.4%); and the negative percent agreement, 100.0% (95.9%-100.0%). EGFR mutations were detected at a frequency of 50.3% using the ADPS EGFR Mutation Test Kit and 52.9% using the cobas EGFR Mutation Test v2. There were 10 discrepant mutation calls between the two methods. CancerSCAN reproduced eight ADPS results. In two cases, mutant allele fraction was ultra-low at 0.02% and 0.06%, which are significantly below the limit of detection of the cobas assay and CancerSCAN. Based on the EGFR genotyping by ADPS, the treatment options could be switched in five patients.
Conclusion
The highly sensitive and specific ADPS EGFR Mutation Test Kit would be useful in detecting the patients who have lung cancer with EGFR mutation, and can benefit from the EGFR targeted therapy.

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Highly Sensitive 3D‐Nanoplasmonic‐Based Epidermal Growth Factor Receptor Mutation Multiplex Assay Chip for Liquid Biopsy
Ji Young Lee, Byeong‐Ho Jeong, Ho Sang Jung, Taejoon Kang, Yeonkyung Park, Jin Kyung Rho, Sung‐Gyu Park, Min‐Young Lee
Small Science.2024;[Epub] CrossRef
The Advantage of Targeted Next-Generation Sequencing over qPCR in Testing for Druggable EGFR Variants in Non-Small-Cell Lung Cancer
Adam Szpechcinski, Joanna Moes-Sosnowska, Paulina Skronska, Urszula Lechowicz, Magdalena Pelc, Malgorzata Szolkowska, Piotr Rudzinski, Emil Wojda, Krystyna Maszkowska-Kopij, Renata Langfort, Tadeusz Orlowski, Pawel Sliwinski, Mateusz Polaczek, Joanna Chor
International Journal of Molecular Sciences.2024; 25(14): 7908. CrossRef

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Dynamics of Soluble Programmed Death-Ligand 1 (sPDL1) during Chemotherapy and Its Prognostic Implications in Cancer Patients: Biomarker Development in Immuno-oncology: Hyerim Ha, Ju-Hee Bang, Ah-Rong Nam, Ji-Eun Park, Mei Hua Jin, Yung-Jue Bang, Do-Youn Oh; Cancer Res Treat. 2019;51(2):832-840. Published online October 5, 2018; DOI: https://doi.org/10.4143/crt.2018.311

Abstract PDF PubReader ePub

Purpose
The soluble programmed death-ligand 1 (sPDL1) has immunosuppressive activity and is a candidate biomarker for immuno-oncology drug development. In this study, we measured sPDL1 at pre- and post-chemotherapy and at disease progression to uncover the dynamics of sPDL1 during treatment in biliary tract cancer (BTC) patients.
Materials and Methods
From 90 BTC patients (training cohort, 53; validation cohort, 37) who were candidates for palliative first-line chemotherapy, blood was collected at pre- and post-chemotherapy (at the time of best response) and at disease progression. The sPDL1 levels were measured using an enzyme-linked immunosorbent assay. Responses to chemotherapy, overall survival (OS), and other prognostic factors including the neutrophil-lymphocyte ratio (NLR) were analyzed.
Results
The OS of all patients was 11.5 months (confidence interval [CI], 9.7 to 16.2). The best response was complete response in seven (7.8%), partial response in 20 (22.2%), stable disease in 52 (57.8%), and disease progression (PD) in 11 patients (12.2%). Patients with high pre-chemotherapy sPDL1 (≥ 1.30 ng/mL) showed worse OS than patients with low prechemotherapy sPDL1 (9.1 months vs. 12.5 months, p=0.003). In multivariate analyses, high pre-chemotherapy sPDL1 (hazard ratio [HR], 1.96; 95% CI, 1.2 to 3.9; p=0.011) and high pre-chemotherapy NLR (HR, 1.82; 95% CI, 1.1 to 3.0; p=0.020) were independent poor prognostic factors for OS. At the time of PD, sPDL1 was increased significantly compared with pre-chemotherapy sPDL1 (1.59 ng/mL vs. 0.72 ng/mL, p=0.003).
Conclusion
The sPDL1 at pre-chemotherapy confers the prognostic value for OS in BTC patients under palliative chemotherapy. The dynamics of sPDL1 during chemotherapy correlate with disease burden and have prognostic value.

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Electrochemical sensors for the detection of immune checkpoint related proteins and their role in cancer companion diagnostics
Louise Barnaby, Andrew G. Watts, Pedro Estrela
Biosensors and Bioelectronics: X.2025; 22: 100561. CrossRef
Prognostic significance of soluble PD-L1 in prostate cancer
Margarita Zvirble, Zilvinas Survila, Paulius Bosas, Neringa Dobrovolskiene, Agata Mlynska, Gintaras Zaleskis, Jurgita Jursenaite, Dainius Characiejus, Vita Pasukoniene
Frontiers in Immunology.2024;[Epub] CrossRef
Soluble immune checkpoint molecules in cancer risk, outcomes prediction, and therapeutic applications
Lin Chen, Yuqing Chao, Wenjing Li, Zhixia Wu, Qinchuan Wang
Biomarker Research.2024;[Epub] CrossRef
Association between response to anti-PD-1 treatment and blood soluble PD-L1 and IL-8 changes in patients with NSCLC
Ling Yi, Xiaojue Wang, Siyun Fu, Zhuohong Yan, Tianyu Ma, Siqi Li, Panjian Wei, Hongtao Zhang, Jinghui Wang
Discover Oncology.2023;[Epub] CrossRef
Prognostic value of soluble programmed cell death ligand-1 (sPD-L1) in lymphoma: a systematic review and meta-analysis
Yangyang Ding, Cheng Sun, Linhui Hu, Shudao Xiong, Zhimin Zhai
Annals of Hematology.2023; 102(9): 2425. CrossRef
A Systematised Literature Review of Real-World Treatment Patterns and Outcomes in Unresectable Advanced or Metastatic Biliary Tract Cancer
Vivian Peirce, Michael Paskow, Lei Qin, Ruby Dadzie, Maria Rapoport, Samantha Prince, Sukhvinder Johal
Targeted Oncology.2023; 18(6): 837. CrossRef
Does Elevated Pre-Treatment Plasma PD-L1 Level Indicate an Increased Tumor Burden and Worse Prognosis in Metastatic Colorectal Cancer?
Magdolna Dank, Dorottya Mühl, Magdolna Herold, Lilla Hornyák, Attila Marcell Szasz, Zoltan Herold
Journal of Clinical Medicine.2022; 11(16): 4815. CrossRef
The prognostic role of soluble transforming growth factor‐β and its correlation with soluble programmed death‐ligand 1 in biliary tract cancer
Jin Won Kim, Kyung‐Hun Lee, Ji‐Won Kim, Koung Jin Suh, Ah‐Rong Nam, Ju‐Hee Bang, Mei Hua Jin, Kyoung‐Seok Oh, Jae‐Min Kim, Tae‐Yong Kim, Do‐Youn Oh
Liver International.2021; 41(2): 388. CrossRef
Prognostic Value of Serum Soluble Programmed Death-Ligand 1 and Dynamics During Chemotherapy in Advanced Gastric Cancer Patients
Woochan Park, Ju-Hee Bang, Ah-Rong Nam, Mei Hua Jin, Hyerim Seo, Jae-Min Kim, Kyoung Seok Oh, Tae-Yong Kim, Do-Youn Oh
Cancer Research and Treatment.2021; 53(1): 199. CrossRef
The Clinical Significance of Soluble Programmed Cell Death-Ligand 1 (sPD-L1) in Patients With Gliomas
Shujun Liu, Yadi Zhu, Chenxi Zhang, Xiangrui Meng, Bo Sun, Guojun Zhang, Yubo Fan, Xixiong Kang
Frontiers in Oncology.2020;[Epub] CrossRef
The prognostic role of soluble TGF‐beta and its dynamics in unresectable pancreatic cancer treated with chemotherapy
Hyunkyung Park, Ju‐Hee Bang, Ah‐Rong Nam, Ji Eun Park, Mei Hua Jin, Yung‐Jue Bang, Do‐Youn Oh
Cancer Medicine.2020; 9(1): 43. CrossRef
Soluble programmed death-1 (sPD-1) and programmed death ligand 1 (sPD-L1) as potential biomarkers for the diagnosis and prognosis of glioma patients
Shujun Liu, Yadi Zhu, Chenxi Zhang, Jiajia Liu, Hong Lv, Guojun Zhang, Xixiong Kang
Journal of Medical Biochemistry.2020; 39(4): 444. CrossRef
Soluble PD-1: Predictive, Prognostic, and Therapeutic Value for Cancer Immunotherapy
Muhammad Khan, Zhihong Zhao, Sumbal Arooj, Yuxiang Fu, Guixiang Liao
Frontiers in Immunology.2020;[Epub] CrossRef

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