Interview with Dr Andrew Stephens at Hudson Institute - Proof-of-Concept Cancer treatment, page-18

I listened to the video and Thian does say that getting the light to penetrate into the patient to get to the sight of the tumour will be a limitation of the therapy. He mentions that they will have to find innovative ways to try to do this. I know you were being sarcastic when mentioning the different wavelengths of light, however for those invested in this stock that don't have a science background, while there are wavelengths of light which can penetrate the body more deeply that what visible light can, these are NOT the right wavelength to activate the compound and switch on its tumour killing mode. Invion's investor relations has a video which mentions that it uses visible red light. From a quick google search visible red wavelengths of light can penetrate between 4 - 5 mm into the skin.

The idea that you are going to cure pancreatic cancer using this therapy will be difficult and require significant innovation. Given that the compound is taken up preferentially by tumour tissues and needs to be activated while it is inside those tissues to produce its killing effect, this means that a visible red light would need to be placed deep inside the body close to the pancreas and shone on that organ, and then the light would only penetrate up to 5 mm of depth, whereas the tumour may be the size of a golfball, so most of it would escape the killing effect.You also couldn't activate the compound while it is flowing around the bloodstream close to the skin as it would then activate, but not in the target you want.

This could be a revolutionary and very effective treatment for skin cancer and possibly other skin issues e.g. warts, maybe skin tags. However other cancer targets and sites in the body will be more difficult to treat.

I am not trying to down ramp this stock as I own shares. Just trying to be realistic about its prospects.