
Rare disease outfit Acer fumbles at FDA, receiving CRL due to lack of inspection readiness at packaging manufacturer
It’s never fun to receive a CRL, but perhaps even less so when the rejection has to do with manufacturing rather than the drug.
Rare disease player Acer, along with Geneva-based partner Relief Therapeutics, unveiled Tuesday that the FDA had issued the two a CRL for ACER-001, a drug candidate to treat urea cycle disorders. From the CRL, as reported by the companies:
[The FDA’s] field investigator could not complete inspection of [Acer’s third-party contract packaging manufacturer], because the facility was not ready for inspection. Satisfactory inspection is required before [the NDA] may be approved. Please notify us in writing when this facility is ready for inspection.
Acer noted that the FDA did not cite any other approvability issues in the CRL relating to the NDA. However, the FDA did request “additional existing nonclinical information to be provided in the resubmission of the NDA.” Acer added that the request for additional data was “not an approvability issue.”
Beyond Acer “actively collaborating” with its unnamed contract packaging manufacturer and cooperating with the FDA, the biotech added that it plans to resubmit the NDA for ACER-001, also known as sodium phenylbutyrate, to the federal regulators next quarter.
So far, investors are not buying Acer’s statement as shares $ACER dropped more than 10% to $1.58 each — a far cry from its once $18 share price.
Acer CEO Chris Schelling said in a statement: “While the outcome of the NDA review was not what we had hoped for, multiple rounds of labeling negotiations have already been conducted to date and we believe the recommendations raised by FDA can be appropriately addressed. We should be able to resubmit the NDA relatively quickly.”
He added, “We remain committed to bringing a new treatment option to patients in the U.S. with UCDs.”
Endpoints News has reached out to Acer and will update this story accordingly.
This is not Acer’s first time around the CRL block. The biotech got a CRL for celiprolol, also known as Edsivo, for vascular Ehlers-Danlos syndrome back in 2019. At the time, the federal agency was requesting an “adequate and well-controlled trial” as shares plummeted 77%. And so far, that drug candidate has not been approved.