Objective: To evaluate the prognosis of postoperative laryngeal cancer recurrence, the study was designed to investigate the relationship of p53, c-myc and nm23 protein expression in recurrent laryngeal carcinoma.
Method: Five hundred and seventy-four cases of laryngeal carcinoma were retrospectively reviewed. All the patients were observed for 3 years postoperatively, 56 cases with recurrence were diagnosed and 39 cases of normal laryngeal tissue were compared. The tissue microarrays was made in all the cases. The tissue chip was analyzed by the SABC immunohistochemical method.
Result: p53, c-myc and nm23 expressed in most of the laryngeal carcinoma. The positive ratio is different. There is higher expression of c-myc in recurrent laryngeal carcinoma, and its expression has significant difference with the laryngeal carcinoma, which have no recurrence (P < 0.01). nm23 has lower expression in recurrent laryngeal carcinoma, and it's expression has significant difference with the laryngeal carcinoma which have no recurrence(P < 0.01). The expression of p53 has no significant difference between recurrent laryngeal carcinoma and the laryngeal carcinoma which have no recurrence(P > 0.05). There is the positive correlation between the expression of c-myc and the recurrent laryngeal carcinoma; and negative correlation between the expression of nm23 and the recurrent laryngeal carcinoma.
Conclusion: c-myc and nm23 could be the prognosis marker of postoperative laryngeal cancer recurrence.