FDA Approves Serenity SER 120, Denies Ferring Petition
In denying a 11/19/16 Ferring petition asking that it not approve a Serenity Pharmaceuticals NDA for SER 120, a desmopressin nasal spray to treat nocturia in adults, until certain conditions are met, FDA said it approved the NDA 3/3 because it “is satisfied that Serenity presented substantial evidence of effectiveness and that the benefits of SER 120 outweigh the risks when used in accordance with its labeling.”
Ferring had asked that agency approval for SER 120 or any other application for a desmopressin product to treat nocturia be delayed until (1) FDA establishes a consistent interpretation of the standard for effectiveness, particularly for purposes of determining whether the effect of the drug is clinically meaningful, and (2) FDA establishes a consistent interpretation of the standard for safety, particularly actions needed to mitigate the risk of hyponatremia.
The denial letter says that the agency applied the same standard to evaluate whether the treatment effects in pivotal trials for Ferring’s Nocdurna (desmopressin) sub-lingual tablets and Serenity’s SER 120 were clinically meaningful. “Applying the same approval standard to different applications can lead to different regulatory outcomes,” it says. The letter notes that although both are desmopressin products, the data submitted for each product were different, and the petition failed to adequately account for those differences.