Genethon, the French pioneer in the discovery and development of gene therapies for rare diseases, and Ampersand Biomedicines, a Flagship Pioneering multi-product platform company developing smarter medicines that act specifically at the site of disease and nowhere else, announce an exclusive collaboration to engineer a new generation of AAV capsids with superior tissue specificity. This strategic partnership brings together two highly complementary R&D teams with synergistic scientific capabilities, aiming to unlock the full therapeutic potential of AAV-based gene therapy.