NorthWest Biotherapeutics Inc (NWBO)

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As an example:

NovoCure:

Patients treated with the combined therapy reported a significant increase in median progression free survival, at 6.7 months versus 4 for those treated with the drug alone. They also reported an increase in median overall survival, at 20.8 months versus 16 months for the drug alone.

A total of 43% of patients treated with the combined therapy were alive at 2 years, versus 30% with the drug alone. Seventeen percent lived to 4 years, versus 10% with the drug alone, according to the study.