WOW This makes news ...This makes it into Science Daily, like they have discovered something new :
https://www.sciencedaily.com/releases/2019/02/190204085956.htm
Sound familiar ? Parts are almost exactly the same as TLT :
A new compound based on Iridium, a rare metal which landed in the Gulf of Mexico 66 M years ago, hooked onto albumin, a protein in blood, can attack the nucleus of cancerous cells when switched on by light, University of Warwick researchers have found The treatment of cancer using light, called Photodynamic therapy, is based on chemical compounds called photosensitizers, which can be switched on by light to produce oxidising species, able to kill cancer cells. Clinicians can activate these compounds selectively where the tumour is (using optical fibres) thus killing cancer cells and leaving healthy cells intact. "It is fascinating how albumin can deliver our photosensitiser so specifically to the nucleus. We are at a very early stage, but we are looking forward to see where the preclinical development of this new compound can lead."
"Our team is not only extremely multidisciplinary, including biologists, chemists and pharmacists, but also highly international, including young researchers from China, India and Italy supported by Royal Society Newton and Sir Henry Wellcome Fellowships."