As it advances its nonopioid analgesic ATX-101 breakthrough therapy through a phase IIb registration trial, Allay Therapeutics secured $57.5 million in a series D round, which included an investment from the company’s Japanese partner. ATX-101, a configuration of sodium ion channel blocker bupivacaine and a biopolymer, which is in a phase IIb registration study, is designed to offer pain relief following total knee arthroplasty.