Clinical Hold Issues Outlined for Cholesterol Gene Therapy
FDA has sent Verve Therapeutics a formal clinical hold letter that outlines the information required to resolve a hold placed 11/4 (see story) on VERVE-101 and a study in patients with heterozygous familial hypercholesterolemia. The agency is requesting additional preclinical data related to: (1) potency differences between human and non-human cells, (2) risks of germline editing, and (3) off-target analyses in non-hepatocyte cell types, according to the company.
FDA has also requested available clinical data from the company’s ongoing heart-1 trial, Verve says, adding that the agency additionally wants it to modify the trial protocol in the U.S. to include additional contraceptive measures and to increase the length of the staggering interval between dosing of participants.
“Verve intends to submit a response as expeditiously as possible,” the company says. “Verve continues to enroll patients in the heart-1 clinical trial in New Zealand and the United Kingdom and plans to report initial safety and pharmacodynamic data from the dose-escalation portion of the heart-1 trial in the second half of 2023.”
VERVE-101 is described as a novel, investigational gene editing medicine designed to be a single-course treatment to permanently turn off the PCSK9 gene in the liver to reduce disease-driving low-density lipoprotein cholesterol.