Table 1.

Afatinib IC₅₀s compared to gefitinib IC₅₀s of SCCHN cell lines

Cell line	Afatinib IC50 (μM)	Confidence interval	Gefitinib IC50 (μM)
SCC25	0.0102	9.796e-005 to 1.062	5–10
HN5	0.06412	0.009348 to 0.4398	0.05–0.5
SCC58	0.3405	0.07144 to 1.623	>100
SQ20B	0.5176	0.08746 to 3.064	1–5
MSK921	1.174	0.6654 to 2.071	1–5
HN31	1.225	0.8320 to 1.805	1–5
SCC61	1.903	0.6092 to 5.942	5
SCC28	1.951	0.7886 to 4.827	>5
Detroit 562	2.485	0.9399 to 6.569	5–50
SCC35	8.008	5.645 to 11.36	100