First-in-human phase I/Ib study of NIZ985, a recombinant heterodimer of IL-15 and IL-15Rα, as a single agent and in combination with spartalizumab in patients with advanced and metastatic solid tumors ========================================================================================================================================================================================================= * Rom Leidner * Kevin Conlon * Douglas G McNeel * Andrea Wang-Gillam * Sumati Gupta * Robert Wesolowski * Monica Chaudhari * Nadia Hassounah * Jong Bong Lee * Lang Ho Lee * Jessica A O’Keeffe * Nancy Lewis * George N Pavlakis * John A Thompson