FDA Denies Petition Seeking Valtoco NDA Rejection
FDA has denied an 11/1/19 petition filed by Arent Fox asking that the agency deny approval of an NDA for Neurelis’ Valtoco (diazepam nasal spray) until additional clinical studies are conducted. The agency approved the NDA 1/10 contemporaneously with the petition denial.
The petition had asked that FDA:
- require Neurelis to conduct a bridging study comparing Valtoco to Diastat in patients, demonstrating comparable exposure to support approval of the NDA;
- require Neurelis to conduct a food effect study for Valtoco that would allow for adequate labeling to address the curiously-delayed Tmax that suggests the product is primarily swallowed and absorbed through the GI tract and not nasally; and
- should determine that Valtoco is not clinically superior to nor offers a major contribution to patient care when compared to Diastat.
A supplemental petition received by FDA 12/4/19 said that the agency:
- should require Neurelis to reformulate Valtoco to remove vitamin E or conduct a study to determine whether the vitamin E-containing nanoparticles in Valtoco’s nasal spray are of respirable size and therefore whether they have the potential to reach the alveoli of an indicated patient’s lungs;
- should require Neurelis to quantify the amount of vitamin E reaching the alveoli if FDA determines that the vitamin E has that potential to reach it; and
- should require Neurelis to include appropriate labeling for Valtoco based on the studies being requested, given the concern for vitamin E and its effects on an individual’s lungs when inhaled in an aerosolized form.
FDA rejected all of the petition’s claims and requests, saying it did not agree with the assertions and conclusions stated in the petition.