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A Prospective, Molecular Epidemiology Study of EGFR Mutations in Asian Patients with Advanced Non–Small-Cell Lung Cancer of Adenocarcinoma Histology (PIONEER)

Open access
Shi, Yuankai, Au, Joseph Siu-Kie, Thongprasert, Sumitra, Srinivasan, Sankar, Tsai, Chun-Ming, Khoa, Mai Trong, Heeroma, Karin, Itoh, Yohji, Cornelio, Gerardo, Yang, Pan-Chyr·2014·Journal of Thoracic Oncology

Abstract

INTRODUCTION: PIONEER (NCT01185314) was a prospective, multinational, epidemiological study of epidermal growth factor receptor (EGFR) mutations in patients from Asia with newly diagnosed advanced lung adenocarcinoma. METHODS: Eligible patients (aged ≥20 years) had untreated stage IIIB/IV adenocarcinoma. The EGFR mutation status (primary end point: positive, negative, or undetermined) of tumor samples (biopsy, surgical specimen, or cytology) was determined (Scorpion amplification refractory mutation system). EGFR mutation frequency was calculated and compared between demographic and clinical subgroups. RESULTS: Of 1482 patients from seven Asian regions, 43.4% of patients were female, median age was 60 years (range, 17-94), and 52.6% of patients were never-smokers. EGFR mutation status was evaluable in tumors from 1450 patients (97.8%) (746 [51.4%] positive; 704 [48.6%] negative). Country, sex, ethnicity, smoking status, pack-years (all p < 0.001), disease stage (p = 0.009), and histology type (p = 0.016) correlated significantly with EGFR mutation frequency. Mutation frequency was 61.1% in females, 44.0% in males; lower in patients from India (22.2%) compared with other areas (47.2%-64.2%); highest among never-smokers (60.7%); and decreased as pack-year number increased (>0-10 pack-years, 57.9%; >50 pack-years, 31.4%) (similar trend by sex). Ethnic group (p < 0.001) and pack-years (p < 0.001) had statistically significant associations with mutation frequency (multivariate analysis); sex was not significant when adjusted for smoking status. CONCLUSION: PIONEER is the first prospective study to confirm high EGFR mutation frequency (51.4% overall) in tumors from Asian patients with adenocarcinoma. The observed high mutation frequency in demographic/clinical subgroups compared with white populations suggests that mutation testing should be considered for all patients with stage IIIB/IV adenocarcinoma, even males and regular smokers, among Asian populations.

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Metadata

Authors
Shi, Y., Au, J. S.-K., Thongprasert, S., Srinivasan, S., Tsai, C.-M., Khoa, M. T., Heeroma, K., Itoh, Y., Cornelio, G., & Yang, P.-C.
Venue
Journal of Thoracic Oncology
Publisher
Elsevier BV
Published
2014-02
Volume
9
Issue
2
Pages
154-162
ISSN
1556-0864 (ISSN-L)
OpenAlex
W2040299716
Cited by
1,551
References
7
FWCI
72.70
Type
journal article
Language
en
Open access
hybrid

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CoChat. (2026). Citation check: A Prospective, Molecular Epidemiology Study of EGFR Mutations in Asian Patients with Advanced Non–Small-Cell Lung Cancer of Adenocarcinoma Histology (PIONEER). https://app.cochat.ai/papers/10.1097/jto.0000000000000033
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Shi, Y., Au, J. S.-K., Thongprasert, S., Srinivasan, S., Tsai, C.-M., Khoa, M. T., Heeroma, K., Itoh, Y., Cornelio, G., & Yang, P.-C. (2014). A Prospective, Molecular Epidemiology Study of EGFR Mutations in Asian Patients with Advanced Non–Small-Cell Lung Cancer of Adenocarcinoma Histology (PIONEER). Journal of Thoracic Oncology. https://doi.org/10.1097/jto.0000000000000033

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