OGD’s Paragraph IV Database and Two Interesting Listings
The Office of Generic Drugs (OGD) updated its Paragraph IV Database (PIVDB) yesterday and two new entries caught my eye. An ANDA for glycerol phenylbutyrate oral solution (a copy of the NDA for Ravicti held by Hyperion Therapeutics) was listed as submitted on November 19, 2013 and posted on 3/10/14 or about 4 months after the original submission. In this case, it is not the length of time the ANDA has been at OGD, but rather the exclusivity and patent issues associated with the product and the jump on first-to-file status that at least one generic firm has decided to seek, especially since the original NDA was approved on February 1, 2013, only 9 months prior to ANDA submission. The second listing that got my blood flowing was for Memantine Hydrochloride extended-release capsules, a generic form of Namenda XR Capsules. There was an approximate 10-month period from submission to acceptance of the ANDA. While that is not the longest review time for completeness and acceptability we have seen, it certainly indicates that either OGD had a difficult time evaluating the ANDA for receipt (maybe bioequivalence issues?) or their backlog could be a factor.