The regulatory clouds that have been darkening the U.S. FDA landscape of late for Uniqure NV’s gene therapy AMT-130 in Huntington’s disease may be parting a bit with the announced departure of Vinay Prasad as director of the agency’s CBER at the end of April.
A lot of distance lies between talking regulatory flexibility and actually being flexible. That message was driven home again after Uniqure NV disclosed in its latest earnings report March 2 that the U.S. FDA wants a sham-controlled study before it will consider approval of the company’s gene therapy AMT-130 in Huntington’s, a rare disease currently affecting about 41,000 people in the U.S.
Uniqure NV is the latest firm to get caught between the FDA’s shifting demands for “gold standard” science and regulatory flexibility for rare disease therapies. The company disclosed in its latest earnings report that U.S. regulators are calling for a sham-controlled study before they will consider approval of gene therapy AMT-130 in Huntington’s disease, a requirement that could set the program back by two to three years and raises potential ethical issues.
Rgenta Therapeutics Inc. has announced preclinical data on RGT-0474060, an oral PMS1 inhibitor for Huntington’s disease. RGT-0474060 is an orally bioavailable small molecule designed to inhibit PMS1 RNA and protein expression, to modulate splicing of CAG repeat expansion known to cause Huntington’s disease.
Porosome Therapeutics Inc. has announced the development of novel first-in-class porosome-targeting small molecules and blood-brain barrier-traversing peptide drugs developed using the company’s Porosome.AI platform to treat various secretory disorders, such as Alzheimer’s disease and type 2 diabetes.
Sarepta Therapeutics Inc. has filed a clinical trial application (CTA) in New Zealand seeking clearance to initiate a first-in-human trial of SRP-1005 (formerly ARO-HTT). Pending approval, the INSIGHTT trial is anticipated to begin in the second quarter of this year.
Loqus23 Therapeutics Ltd. has nominated LQT-23, a first-in-class allosteric oral small-molecule inhibitor of MSH3/MutSβ, as a development candidate for Huntington’s disease.
Revir Therapeutics Inc. has announced progress in its HTT-PMS1 genetic medicine program for Huntington’s disease with the identification of a lead compound and the award of a $4.6 million grant from the California Institute for Regenerative Medicine (CIRM).
Uniqure NV is regrouping after a surprise switcheroo by the havoc-beset U.S. FDA regarding phase I/II studies with AMT-130 vs. external control in Huntington’s disease (HD) – news of which pushed down the Lexington, Mass.-based firm’s shares (NASDAQ:QURE) Nov. 3 by $33.40, a loss of 49%, at the closing price of $34.29.
Uniqure NV rang the bell with a best-case scenario in the pivotal phase I/II study with AMT-130 for the treatment of Huntington’s disease, and shares of the Amsterdam-based firm (NASDAQ:QURE) closed Sept. 24 at $47.50, up $33.84, or 248%. The study met its prespecified primary endpoint, with high-dose AMT-130 turning up a statistically significant slowing of disease progression as measured by the composite Unified Huntington’s Disease Rating Scale at 36 months compared to a propensity score-matched external control.
