From the website 17/12, page-17

For those who didn't do their homework. 

A partial response or partial remission means the cancer partly responded to treatment, but still did not go away. A partial response is most often defined as at least a 50% reduction in measurable tumor.

These are the numbers from the Herceptin trials. 

8 out of 222 had a complete response
26 out of 222 had a partial response

Need to remember we are looking at prolonging life with the potential of remission. If we are able to extend their life and without any side effects from the treatment that is a win. 

Remember this is the breast cancer data, but still gives you an indication what success looks like. 
Imugene would be very pleased with these results and looking forward to seeing how the data reflects with greater patients in the phase 2.

Well done to all holders.