Invion Limited announced initial proof-of-concept testing results on INV043, the latest Active Pharmaceutical Ingredient using the PhotosoftTM technology. These proof-of-concept tests were undertaken in collaboration with Invion's research partner, the Hudson Institute of Medical Research (Hudson Institute), on a number of cancer types. The key findings from the studies are summarised below: Promising preliminary results that may have application across a range of cancers; INV043 has ~50 times greater phototoxicity than Invion's previous API (IVX-P03) and 600 times greater than Talaporfin sodium (widely used photosensitiser); Studies showed INV043 is selectively retained in malignant but not healthy tissues. Furthermore, no toxicity issues were identified up to 50x the therapeutic dose; Significant regression was observed in vivo in T-cell lymphoma, triple negative breast and pancreatic cancer models; INV043 also displayed fluorescence characteristics under blue light, which illuminated tumour growths.