The letters, many of which were already available online, detail why the regulators initially declined to approve some drugs.

The manufacturing-related rejection for UX111 is more than a setback for Ultragenyx, as it also delays a key test of the new ...

The FDA's request stems from observations made during recent inspections of Ultragenyx's manufacturing facilities.

The U.S. Food and Drug Administration on Thursday publicly shared over 200 archived so-called complete response letters ...

The FDA has released an “initial batch“ of more than 200 complete response letters (CRLs) in efforts to boost transparency. | ...

Around 3,500 FDA employees received termination emails; FDA Commissioner Marty Makary suggests lowering industry user fees ...

The trove of more than 200 letters is part of a pledge of transparency from the agency, with the intention to increase public ...

The U.S. Food and Drug Administration on Thursday published more than 200 of its so-called complete response letters to ...

On July 10, 2025, the Food and Drug Administration (FDA) announced that it had published more than 200 complete response letters (CRLs), in ...

The FDA published a database containing more than 200 letters to pharmaceutical companies detailing why the agency initially refused to approve their products, The New York Times reported July 10. FDA ...

The US FDA has published more than 200 complete response letters, or decision letters, sent as replies to drug and biological product applications submitted to the agency from 2020 to 2024.

The U.S. FDA publishes over 200 complete response letters to enhance transparency within the agency. Read more here.