
AstraZeneca dumps off a mid-stage PAD hopeful, sounding retreat from a packed market
Cardiovascular disease is having somewhat of a revival in recent years, with a spate of next-generation heart drugs cracking open major indications. But for at least one drug’s R&D journey, AstraZeneca has decided to give up the reins rather than ride it out.
AstraZeneca has granted exclusive development and commercial rights to Regio Biosciences for REG-101, a cardiovascular drug expected to enter Phase IIa trials for peripheral artery disease (PAD) in the second half, the companies said Thursday.
Regio will take on all R&D and marketing costs for REG-101, previously known as MEDI5884, with financial backing from Hibiscus Capital Management and Innoforce. As the drug’s prior name implies, the molecule cane from Medimmune, a formerly separate division AstraZeneca bought for $15.6 billion way back in 2007.

The drug purportedly works by targeting endothelial lipase to cut plaque levels in patients with PAD and other CV diseases, and Regio — which has no other drugs in the pipeline — hopes this candidate will eventually prove a winner.
“Peripheral artery disease currently has few pharmaceutical options, and without appropriate treatment, symptoms of PAD can progress from pain while walking to gangrene and limb loss,” Regio CSO Rakesh Dixit said in a statement. “We believe reducing the size of cholesterol-rich plaque within peripheral arteries using REG-101 has the potential to directly and positively address the underlying pathophysiology of PAD.”
Regio was founded in 2020 and is based out of Rockville, MD. Along with the Phase IIa study in PAD, the biotech is also pursuing mid-stage studies for REG-101 in coronary artery disease.
The PAD market is packed with approved drugs, including Pfizer and J&J’s troubled blood thinner rivaroxaban, but Regio thinks targeting plaque could help carve out a path to patients. Patients with PAD, characterized by the narrowing of blood vessels, are often treated with LDL-lowering cholesterol drugs, which Regio says doesn’t address the plaque problem.