The expansion of Adaptimmune's trial also triggers two milestone payments from GlaxoSmithKline (GSK). Adaptimmune is collaborating with GSK for the development of its NY-ESO TCR program through a strategic cancer immunotherapy partnership announced in June 2014. Under the terms of the agreement, GSK has an exclusive option to license Adaptimmune's NY-ESO TCR therapeutic and upon exercise would assume full responsibility for further development and commercialization of the therapeutic.