p16, Cyclin D1, and HIF-1α Predict Outcomes of Patients with Oropharyngeal Squamous Cell Carcinoma Treated with Definitive Intensity-Modulated Radiation Therapy

Table 6

Tumor counts stratified by p16 and cyclin D1 staining.

		Cyclin D1 (% of cells staining)
	𝑛	0%	1–25%	26–50%	51–75%	76–100%
p16 negative	21	1	0	6	7	7
p16 positive	38	17	9	8	4	0

Cochran-Armitage Trend test: 𝑃<0.001.