EGFR mutation testing practices within the Asia pacific region: Results of a multicenter diagnostic survey

Yasushi Yatabe, Keith M. Kerr, Ahmad Utomo, Pathmanathan Rajadurai, Van Khanh Tran, Xiang Du, Teh Ying Chou, Ma Luisa D. Enriquez, Geon Kook Lee, Jabed Iqbal, Shanop Shuangshoti, Jin Haeng Chung, Koichi Hagiwara, Zhiyong Liang, Nicola Normanno, Keunchil Park, Shinichi Toyooka, Chun Ming Tsai, Paul Waring, Li ZhangRose Mccormack, Marianne Ratcliffe, Yohji Itoh, Masatoshi Sugeno, Tony Mok

Research output: Contribution to journalArticlepeer-review

127 Citations (Scopus)


Introduction: The efficacy of epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors in EGFR mutation-positive non-small-cell lung cancer (NSCLC) patients necessitates accurate, timely testing. Although EGFR mutation testing has been adopted by many laboratories in Asia, data are lacking on the proportion of NSCLC patients tested in each country, and the most commonly used testing methods. Methods: A retrospective survey of records from NSCLC patients tested for EGFR mutations during 2011 was conducted in 11 Asian Pacific countries at 40 sites that routinely performed EGFR mutation testing during that period. Patient records were used to complete an online questionnaire at each site. Results: Of the 22,193 NSCLC patient records surveyed, 31.8% (95% confidence interval: 31.2%-32.5%) were tested for EGFR mutations. The rate of EGFR mutation positivity was 39.6% among the 10,687 cases tested. The majority of samples were biopsy and/or cytology samples (71.4%). DNA sequencing was the most commonly used testing method accounting for 40% and 32.5% of tissue and cytology samples, respectively. A pathology report was available only to 60.0% of the sites, and 47.5% were not members of a Quality Assurance Scheme. Conclusions: In 2011, EGFR mutation testing practices varied widely across Asia. These data provide a reference platform from which to improve the molecular diagnosis of NSCLC, and EGFR mutation testing in particular, in Asia.

Original languageEnglish
Pages (from-to)438-445
Number of pages8
JournalJournal of Thoracic Oncology
Issue number3
Publication statusPublished - Mar 30 2015


  • EGFR mutation
  • Multicenter
  • Non-small-cell lung cancer
  • Survey
  • Testing

ASJC Scopus subject areas

  • Oncology
  • Pulmonary and Respiratory Medicine


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