Abstract:
Objective To observe Napsin A, TTF1 and SPA protein expressions and their correlation with EGFR gene mutation in primary lung adenocarcinoma tissues.
Methods Immunohistochemistrical method was used to detect Napsin A, TTF1 and SPA protein expressions in 306 cases of primary lung adenocarcinoma tissues, while ARMS method was used to detect whether there was EGFR gene mutation in these tissues.
Results Napsin A, TTF1 and SPA expression rates were 87.25%, 80.72% and 60.46% in primary lung adenocarcinoma. EGFR gene mutation rate was 40.20% in primary lung adenocarcinoma. Patients with positive TTF1, Napsin A, SPA expressions had higher EGFR gene mutation rate than those with negative expressions (P < 0.01).
Conclusion We can simply predict whether EGFR gene mutation in primary lung adenocarcinoma will occur by detecting whether Napsin A, TTF1 and SPA protein are expressed, and this is very practical for a patient whose tissues are not enough for molecular detection or a hospital where molecular detection cannot be carried out.