Tim Dyer, CEO of Geneva-based Addex Therapeutics SA, told BioWorld that Indivior plc's decision to stop research with addiction candidate ADX-71441 and focus work on other GABAB positive allosteric modulator (PAM) therapies is "not the end of the world. The most important thing for us is that we've got a committed partner. Shifting from a lead asset to a backup – that's the business we're in," he said.