As of August 2021, FDA has published over 1,900 PSGs. Events that can initiate the development of a PSG include: - Recently approved new drug applications (NDAs) and supplemental NDAs,
- FDA analysis of products without PSGs,
- Pre-ANDA meetings,
- Public requests,
- Comments submitted to the PSG docket through https://www.regulations.gov/,
- Controlled correspondences, or
- Citizen petitions.
PSGs can be especially helpful for complex generic drug product development. Complex generic drug products are typically harder to develop than non-complex generic drug products using traditional bioequivalence approaches because of the complex nature of active ingredients, formulations, routes of delivery, delivery systems or other complexities. FDA aims to issue PSGs for complex products as soon as scientific recommendations are available. As a commitment under the Generic Drug User Fee Amendments Reauthorization of 2017 (GDUFA II), FDA will issue PSGs for 90% of non-complex new chemical entities (NCEs) approved on or after October 1, 2017, at least 2 years prior to the earliest lawful ANDA submission date. FDA has met the goal since GDUFA II. This goal does not include complex products as defined in the GDUFA II Commitment Letter. Find out more about PSGs Along with being announced in the Federal Register, PSGs are published on FDA's Product-Specific Guidances for Generic Drug Development webpage in batches on a quarterly basis and as needed as stand-alone postings. This webpage lists the guidances in alphabetical order and in a searchable and downloadable table according to the name of the active ingredient. The PSG table allows users to perform a text search of PSGs by active ingredient or by RLD or reference standard (RS) number; filter search results using a text search box; and export search results in Excel, CSV, or PDF format. In addition, the webpage separates out newly added and revised guidances. To further enhance transparency, FDA also provides information related to upcoming new and revised PSGs for complex generic drug products on a quarterly basis on the Upcoming Product-Specific Guidances for Complex Generic Drug Product Development webpage. Be sure to check out OGD's new PSG Snapshot for a quick reference to understanding the usefulness of PSGs. Additionally, SBIA offers many conferences, workshops and webinars providing in-depth discussion of generic drug development, including complex scientific issues to PSG development. Recent events include the 2021 Generic Drugs Forum and the 2021 PSG webinar. Recordings of all SBIA events are located on the SBIA Learn webpage at www.fda.gov/cdersbialearn. Stay connected with upcoming events by: Cheers, Renu Lal, Pharm.D. CDER Small Business and Industry Assistance Issues of this newsletter are archived at http://www.fda.gov/cdersbiachronicles This communication is consistent with 21CFR10.85(k) and constitutes an informal communication that represents our best judgment at this time but does not constitute an advisory opinion, does not necessarily represent the formal position of the FDA, and does not bind or otherwise obligate or commit the agency to the views expressed. |
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