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Zynerba Pharmaceuticals Presents Data Supporting FMR1 Methylation Status as a Correlate to Fragile X Syndrome Severity at the Virtual Joint 16th International Child Neurology Congress (ICNC) & 49th Annual Child Neurology Society (CNS) Meeting
DEVON, Pa., Oct. 15, 2020 (GLOBE NEWSWIRE) -- Zynerba Pharmaceuticals, Inc. (NASDAQ:ZYNE), the leader in innovative pharmaceutically-produced transdermal cannabinoid therapies for rare and near-rare neuropsychiatric disorders, is presenting a poster describing data from the CONNECT-FX (Clinical study Of CaNNabidiol (CBD) in ChildrEn and AdolesCenTs with Fragile X) trial describing the role of FMR1 methylation status in children and adolescents with Fragile X syndrome (FXS) as a correlate to disease severity and as a prognostic biomarker. These data are being presented at the virtual Joint 16th International Child Neurology Congress (ICNC) & 49th Annual Child Neurology Society (CNS) Meeting. These data will also be presented as an oral presentation during the “Research Pipeline: New Findings on Diagnostic and Therapeutics” session of the virtual American Academy of Child and Adolescent Psychiatry (AACAP) 2020 Annual Meeting on Friday, October 23rd, 2020.
A copy of the poster entitled, “ZYN002 Cannabidiol Transdermal Gel in Children and Adolescents With Fragile X Syndrome: Role of Methylation Status as a Correlate to Disease Severity and as a Prognostic Biomarker” is available on the Zynerba corporate website at http://zynerba.com/publications/.
“We are excited to provide an update on the potential role of methylation status of the FMR1 gene as a predictive biomarker of preferential response to Zygel™ (ZYN002) in the treatment of the behavioral symptoms of FXS,” said Zynerba’s Chief Medical Officer, Joseph M. Palumbo, MD, FAPA, MACPsych. “These new data demonstrate that in patients diagnosed with FXS with a fully methylated FMR1 gene significantly more patients who received Zygel achieved a clinically meaningful improvement in their behavioral symptoms compared to patients who received placebo.”
CONNECT-FX is a randomized, double-blind, multinational, 14-week pivotal study to evaluate the efficacy and safety of Zygel in children/adolescents aged 3 to 17 years. Although the CONNECT-FX full analysis set did not achieve statistical significance in its endpoints, building on current scientific evidence, a pre-planned ad hoc analysis of patients having at least 90% methylation (“full methylation” or FMet) of the impacted FMR1 gene, representing 80% of the overall study population, was performed. The results, including the achievement of statistical significance (p=0.020) in the primary endpoint of improvement at 12 weeks of treatment in the Social Avoidance subscale of the ABC-CFXS compared to placebo, suggest that Zygel may have benefit in patients with full methylation of the FMR1 gene.
Zynerba utilized psychometric analyses to determine what constitutes a clinically meaningful change from baseline as measured by subscales of the ABC-CFXS. New results described today include the results of these analyses which support the definition of a clinically meaningful treatment response over 12 weeks of treatment as an improvement of three points or greater for the Social Avoidance subscale, nine points or greater for the Irritability subscale, and five points or greater for the Socially Unresponsive / Lethargic subscale. The Company determined that 58.2% of FMet patients receiving Zygel achieved a clinically meaningful change in their socially avoidant behavior compared to 40.6% of patients receiving placebo (statistically significant; p=0.031), and 40.3% of patients receiving Zygel achieved a clinically meaningful change in Irritability compared to 23.8% of patients receiving placebo (statistically significant; p=0.036).
Figure 1: Greater Percentages of Participants Achieved Meaningful Change in ABC-CFXS Social Avoidance and Irritability with ZYN002 vs Placebo
The authors of the poster concluded that:
- To our knowledge, CONNECT-FX is the largest controlled study ever performed in FXS.
- These results may represent an important step forward in biomarker-driven prediction of response in FXS and neuroscience.
- Zygel was well tolerated, and the safety profile was consistent with previously reported clinical trials.
- In the FMet group, Zygel was superior to placebo in multiple analyses, including:
- Statistically significant mean change in Social Avoidance vs placebo;
- Proportion of patients attaining threshold of clinically meaningful change in Social Avoidance and Irritability;
- Caregiver reported improvements, including statistically significant improvements in Social Avoidance and Isolation, Social Interaction, and Irritable and Disruptive Behaviors.
- Zynerba will be meeting with the FDA in the fourth quarter of 2020 to discuss these data.
About Zynerba Pharmaceuticals, Inc.
Zynerba Pharmaceuticals is the leader in pharmaceutically-produced transdermal cannabinoid therapies for rare and near-rare neuropsychiatric disorders. We are committed to improving the lives of patients and their families living with severe, chronic health conditions including Fragile X syndrome, autism spectrum disorder, 22q11.2 deletion syndrome, and a heterogeneous group of rare and ultra-rare epilepsies known as developmental and epileptic encephalopathies. Learn more at www.zynerba.com and follow us on Twitter at @ZynerbaPharma.
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Will Roberts, VP Investor Relations and Corporate Communications