Table 2. Frequencies of EGFR mutations presented separately for neoplastic epithelium and the tumour stromal compartment from each case.

	Epithelium	Stroma
NSCLC (n=60)	2 (3.3%)	Not done
Sporadic BC (n=48)	3 (6.3%)	4 (8.3%)
Hereditary BC (n=24)	3 (12.5%)	8 (33.3%)

NSCLC=non-small-cell-lung cancer; BC=breast adenocarcinoma. For NSCLC samples, the tumour stroma was not analysed separately.