EGFR and lung cancer: Commercial CHPv2- and TSACP-based NGS of locally extracted Lung cancer DNA samples revealed that for LungCa#4, EGFR deletion (T698fs) was not detected at sequencing site e, and EGFR deletion (L694_T698del) of LungCa#5 was not identified at sequencing site b (Fig. 3c, supplementary Table 2).