Table 3. IC50 based on Xcelligence measurements of cell proliferation.

Drug/Cell	17-DMAG	PU-H71	AUY 922	BIIB021	NVP-BEP800
L1T2	19±3	22±8	2±0.2	29±4	93±8
KS-KMM	15±8	30±9	2±1	20±9	138±5
SLK	55±2	81±10	4±2	54±5	247±29
SLK- KSHV	11±5	±0.1	0.5±0.2	29±3	57±12
Ratio SLK-KSHV/SLK	3.3…9.5×	4.2…5.3×	2.8…20×	1.5…2.3×	3.2…6.2×

All concentrations are in nM and the result of a titration series with 7 drug concentrations each in n = 2 individual titration experiments. Also shown is the range of ratios for IC50s for SLK compared to isogenic SLK-KSHV cells. This can be interpreted as a selectivity index of KSHV positive compared to KSHV negative cells.