Development and validation of a serum microRNA biomarker panel for detecting gastric cancer in a high-risk population
Jimmy Bok Yan So, Ritika Kapoor, Feng Zhu, Calvin Koh, Lihan Zhou, Ruiyang Zou, Yew Chung Tang, Patrick C K Goo, Sun Young Rha, Hyun Cheol Chung, Joanne Yoong, Celestial T Yap, Jaideepraj Rao, Chung-King Chia, Stephen Tsao, Asim Shabbir, Jonathan Lee, Kong-Peng Lam, Mikael Hartman, Wei Peng Yong, Heng-Phon Too, Khay-Guan Yeoh, Jimmy Bok Yan So, Ritika Kapoor, Feng Zhu, Calvin Koh, Lihan Zhou, Ruiyang Zou, Yew Chung Tang, Patrick C K Goo, Sun Young Rha, Hyun Cheol Chung, Joanne Yoong, Celestial T Yap, Jaideepraj Rao, Chung-King Chia, Stephen Tsao, Asim Shabbir, Jonathan Lee, Kong-Peng Lam, Mikael Hartman, Wei Peng Yong, Heng-Phon Too, Khay-Guan Yeoh
Abstract
Objective: An unmet need exists for a non-invasive biomarker assay to aid gastric cancer diagnosis. We aimed to develop a serum microRNA (miRNA) panel for identifying patients with all stages of gastric cancer from a high-risk population.
Design: We conducted a three-phase, multicentre study comprising 5248 subjects from Singapore and Korea. Biomarker discovery and verification phases were done through comprehensive serum miRNA profiling and multivariant analysis of 578 miRNA candidates in retrospective cohorts of 682 subjects. A clinical assay was developed and validated in a prospective cohort of 4566 symptomatic subjects who underwent endoscopy. Assay performance was confirmed with histological diagnosis and compared with Helicobacter pylori (HP) serology, serum pepsinogens (PGs), 'ABC' method, carcinoembryonic antigen (CEA) and cancer antigen 19-9 (CA19-9). Cost-effectiveness was analysed using a Markov decision model.
Results: We developed a clinical assay for detection of gastric cancer based on a 12-miRNA biomarker panel. The 12-miRNA panel had area under the curve (AUC)=0.93 (95% CI 0.90 to 0.95) and AUC=0.92 (95% CI 0.88 to 0.96) in the discovery and verification cohorts, respectively. In the prospective study, overall sensitivity was 87.0% (95% CI 79.4% to 92.5%) at specificity of 68.4% (95% CI 67.0% to 69.8%). AUC was 0.848 (95% CI 0.81 to 0.88), higher than HP serology (0.635), PG 1/2 ratio (0.641), PG index (0.576), ABC method (0.647), CEA (0.576) and CA19-9 (0.595). The number needed to screen is 489 annually. It is cost-effective for mass screening relative to current practice (incremental cost-effectiveness ratio=US$44 531/quality-of-life year).
Conclusion: We developed and validated a serum 12-miRNA biomarker assay, which may be a cost-effective risk assessment for gastric cancer.
Trial registration number: This study is registered with ClinicalTrials.gov (Registration number: NCT04329299).
Keywords: gastric cancer; screening.
Conflict of interest statement
Competing interests: KGY, JBYS, WPY, HPT, LZ, RZ and FZ were coinventors in the patent application 'Serum MicroRNA Biomarker for the Diagnosis of Gastric Cancer'. HPT, LZ and RZ are founders and shareholders of MiRXES. LZ, RZ and YCT are employees of MiRXES. HCC received grants from Lilly, GSK, MSD. Merck-Serono, BMS-Ono, Taiho outside the submitted work. The rest of authors declare no competing interests.
© Author(s) (or their employer(s)) 2021. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.
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