Table 1. EC₅₀ calculated after 72 h of treatment with UCN-01.

GSC no.	EC50 (μM)	Sensitivity
T98G	0.003	High
12	0.043	High
15	0.090	High
5	0.094	High
14	0.184	High
13	0.221	High
10	0.242	High
11	0.367	Medium
18	0.414	Medium
7	0.548	Medium
4	0.581	Medium
6	0.628	Medium
8	0.805	Medium
9	0.949	Medium
1	1.436	Low
17	1.938	Low
U87MG	2.711	Low
16	3.416	Low
3	4269.117	Low
20	79056.358	Low
2	227826.165	Low
19	341092.047	Low

Sensitivity range: high <250 nM; 250 nM < medium <1 μM; low >1 μM.

GSC lines are ordered by their sensitivity to UCN-01