That would be an excellent therapy for skin cancer. If it works as described and without surprises it would practically eliminate skin cancer since blue light is omnipresent.

If the gene could be modified for wavelengths which penetrate deeper it could be applied to other cancer types too then radiation would actually heal you.

Some medical articles we have to add “… in mice” to the title to get the true picture.

Here, they haven’t done it on mice yet, that’s the next step.

So this is promising but still a long way out.