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. Author manuscript; available in PMC: 2017 Nov 15.
Published in final edited form as: Cancer Res. 2016 Oct 3;76(22):6657–6668. doi: 10.1158/0008-5472.CAN-16-0568

Table 1. Combination index values.

CI values show synergy between lurbinectedin and irinotecan.

Experimental Points Median Effect Equation
2X IC50 IC50 0.5X IC50 ED50 ED75
Trabectedin & SN38 1.03 +/- 0.07 0.67 +/- 0.03 1.04 +/- 0.24 0.55 +/- 0.25 0.82 +/- 0.23
Lurbinectedin & SN38 0.93 +/- 0.10 0.63 +/- 0.03 1.10 +/- 0.24 0.67 +/- 0.09 0.81 +/- 0.09

CI < 1 = synergy; CI = 1 is additive, CI >1 = antagonism.