Display Settings:


Send to:

Choose Destination
See comment in PubMed Commons below
BMC Cancer. 2010 Jul 19;10:376. doi: 10.1186/1471-2407-10-376.

Relationship between EGFR expression, copy number and mutation in lung adenocarcinomas.

Author information

  • 1Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Science, Beijng 100730, China.



This study was designed to investigate EGFR protein expression, EGFR copy number and EGFR mutations in lung adenocarcinomas, to explore the relationship of the three markers.


EGFR status was analyzed in surgically resected lung adenocarcinoma samples from 133 Chinese patients by three methods: protein expression (n=133) by standardized immunohistochemistry (IHC), gene copy number (n=133) by fluorescence in situ hybridization (FISH), and mutation analysis using the Scorpion amplification refractory mutation system (ARMS) (n=133).


The results showed that 68.4% of the samples were positive by IHC, 42.1% were positive by FISH, and 63.9% contained activating kinase domain mutations. EGFR mutations were more frequent in non-smoking patients (p=0.008), and EGFR mutations were associated with EGFR FISH positivity (p<0.0001). When using 10% positivity and 2+ as cutoffs, EGFR protein expression was significantly correlated with EGFR FISH positivity (p=0.012) and EGFR mutations (p=0.008) after Bonferroni correction.


EGFR protein expression, EGFR copy number and EGFR mutations were closely related to each other. Standard methods and interpretation criteria need to be established.

[PubMed - indexed for MEDLINE]
Free PMC Article
PubMed Commons home

PubMed Commons

How to join PubMed Commons

    Supplemental Content

    Icon for BioMed Central Icon for PubMed Central
    Loading ...
    Write to the Help Desk