Chemotherapy induces tissue NAD+ loss, and downregulation of NAD+ biosynthetic enzyme Nrk2 marks muscle wasting. - Pöllänen N; Gammon CJ; Pin F; Huot JR; Sartori R; Penna F; Hulmi J; Bonetto A; Pirinen E (BioRxiv : the preprint server for biology, 2026)