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svXspray Pharma Receives CRL from U.S. FDA for Nilopki™
Regulatory press release 2026-06-04
Xspray Pharma AB (publ) (Nasdaq Stockholm: XSPRAY), a pharmaceutical company leveraging its proprietary HyNap™ technology platform to develop improved versions of marketed protein kinase inhibitors (PKIs) for cancer treatment, has received a Complete Response Letter (CRL) from the U.S. Food and Drug Administration (FDA) for its New Drug Application (NDA) for Nilopki™, an optimized formulation of nilotinib. The company will address remaining questions with FDA; long‑term strategy and HyNap™ platform remain unchanged.
The FDA has determined that they are currently not able to approve the NDA based on three reasons. Firstly, they require that each Tasigna dose level must have a single corresponding Nilopki dose level starting from a dose with an exposure similar to the Tasigna 200 mg. Secondly, the FDA has requested more data to adequately demonstrate commercial manufacturing capability of nilotinib ASD batches. Thirdly, as previously communicated, Xspray’s third-party manufacturer needs to provide satisfactory responses to FDA’s inspection findings and a pre-approval inspection of the facility related to Xspray’s manufacturing may need to be conducted.
Xspray will now carefully analyze the CRL in detail and seek clarification where needed in dialogue with the FDA and industry experts.
Xspray Pharma’s CEO Blake Leitch commented:
“Receiving a CRL is of course not the outcome we were hoping for, especially considering the advanced state of labeling discussions we have had with FDA since March this year, but we will address these product specific issues with the goal of resubmitting as soon as possible,” says Blake Leitch, Chief Executive Officer of Xspray Pharma. “Our immediate priority is to fully understand the FDA’s comments, address the remaining questions together with our partners and determine the most efficient path towards launching Nilopki. Although we now believe a launch of Nilopki within this year is unlikely, we remain confident in Nilopki’s profile and in the long‑term value of our HyNap‑based pipeline for patients and shareholders.”
Xspray’s broader strategy and pipeline remain unchanged. The Company continues to progress its portfolio of HyNap‑based product candidates targeting established PKI therapies, including Dasynoc®, for which the NDA is currently under review with PDUFA-date set to August 25, 2026. The Company will update the market on timing and next regulatory steps for Nilopki™ once it has completed its review of the CRL and aligned with the FDA on the way forward.
About Nilopki™
Nilopki™ is Xspray’s HyNap‑based, improved formulation of nilotinib, developed as an improved version of Tasigna® for the treatment of chronic myeloid leukemia. It is designed to address well‑recognized limitations of current nilotinib therapy. Nilopki™ effectively eliminates the requirement for fasting at dosing that currently forces Tasigna® patients to abstain from food for up to six hours per day, one of the biggest challenges for adherence to CML treatment. Nilopki™ has demonstrated matching bioavailability at 52 percent lower dose, thanks to the improved properties of the HyNap™ platform.