Head and neck cancer (HNC) forms 8% of the adult cancers and each year approximately 600.000 new cases occur. In the course of application, about 40% of the cases are in early stage, 50% is locally advanced (stage III and IV) and 10% is in metastatic stage. More than 90% of the cases are squamous cell carcinoma and alcohol and smoking are common etiological factors. Human papillomavirus virus is a risk factor especially for oropharyngeal squamous cell carcinoma (1). The anatomic localization of the disease, the stage of the disease, pathological features and the other diseases of the patient (comorbidity) are important factors to choose the treatment. Although there is not only one approach of treatment, surgical cure and radiotherapy have the similar survival results in early stage. For locally advanced cases, radiotherapy or concomitant chemoradiotherapy is widely used. In concomitant chemoradiotherapy implementations, cisplatin is the gold standard treatment. However, the toxicity related with chemotherapy (particularly cisplatin) restricts the application of chemoradiotherapy with especially the patients who have comorbidity. Epidermal growth factor receptor (EGFR) shows abnormal activity in several epithelial cancers including HNC. Therefore, there are so many done and ongoing studies, which are about different kinds of cancers with the agents who target this pathway (2). Firstly, in the study of Bonner et al. (3) only radiotherapy (RT) and cetuximab treatments with RT are compared. In combination arm in comparison with only RT, a significantly better local-regional control is statistically provided (median 14.9 months against 24.4 months and p=0.005). Accordingly, while median survival is 49 months in cetuximab and RT arm for overall survival (OS), it has been found more superior in combination arm as 29.3 months (p=0.03) in RT arm.
Epidermal growth factor receptor inhibitors radiotherapy chemoterapy
Birincil Dil | İngilizce |
---|---|
Konular | Radyoterapi |
Bölüm | Olgu Sunumu |
Yazarlar | |
Yayımlanma Tarihi | 30 Nisan 2018 |
Yayımlandığı Sayı | Yıl 2018 Cilt: 19 Sayı: 1 |