Australian biopharmaceutical company Neuren Pharmaceuticals has announced positive top-line data from its Phase II trial of NNZ-2591, a treatment for children with Pitt Hopkins syndrome (PTHS).

PTHS is a neurodevelopmental condition caused by the loss in a single copy or a mutation of the TCF4 gene on chromosome 18.

The open label trial enrolled 16 children aged three to 17 years at five US hospitals.

It assessed NNZ-2591’s safety, tolerability, pharmacokinetics and efficacy over 13 weeks of treatment.

The medication was administered orally twice daily, with dosage increased to 12mg/kg during the first six weeks subject to safety and tolerability reviews.

The trial began with a minimum four-week screening period to establish baseline characteristics before the treatment phase. A follow-up assessment was held two weeks post-treatment.

How well do you really know your competitors?

Access the most comprehensive Company Profiles on the market, powered by GlobalData. Save hours of research. Gain competitive edge.

Company Profile – free sample

Thank you!

Your download email will arrive shortly

Not ready to buy yet? Download a free sample

We are confident about the unique quality of our Company Profiles. However, we want you to make the most beneficial decision for your business, so we offer a free sample that you can download by submitting the below form

By GlobalData
Visit our Privacy Policy for more information about our services, how we may use, process and share your personal data, including information of your rights in respect of your personal data and how you can unsubscribe from future marketing communications. Our services are intended for corporate subscribers and you warrant that the email address submitted is your corporate email address.

Safety, tolerability and pharmacokinetics were the trial’s primary endpoints, while its secondary endpoints included efficacy measures tailored to PTHS and others used in various neurodevelopmental conditions.

Clinicians and caregivers observed statistically significant improvements from baseline across all four PTHS-specific efficacy measures. The mean improvement for each measure was also statistically significant.

Nine out of 11 children showed improvement on the PTHS Clinical Global Impression of Improvement (CGI-I), while eight demonstrated improvement on the PTHS Caregiver Overall Impression of Change (CIC).

In addition, six out of 11 children showed improvement on the PTHS Clinical Global Impression of Severity (CGI-S).

NNZ-2591 was well-tolerated and had a good safety profile, with all treatment-emergent adverse events being mild to moderate and most deemed unrelated to the study drug.

Neuren CEO Jon Pilcher said: “This underserved community has such urgent unmet need and we can now continue towards our goal of developing a first approved treatment.

“We are very grateful to the people in the Pitt Hopkins community and at the trial sites in the United States who enabled the successful completion of this extremely challenging, but groundbreaking trial.”