Biomarkers in triple negative breast cancer: A review

Table 1 Epidermal growth factor receptor expression in triple negative breast cancer

Ref.	Total number	No. of TNBC subjects	EGFR expression1
Thike et al[9], 2010	7048	767	30%
Patil et al[10], 2011	683	136	7.4%
Nielsen et al[24], 2004	-	21 basal like tumours	57%
Rakha et al[45], 2007	1726	282	37% in TNBC vs 15% in non-TNBC
Mehdizadeh et al[47], 2012	1132	103	23.3%
Rydén et al[48], 2010	564	48	41% TNBC vs 11% non-TNBC

¹The expression is depicted as the percentage of patients expressing the marker. TNBC: Triple negative breast cancer; EGFR: Epidermal growth factor receptor.