Scientists Find a New Way to Reverse Symptoms of Fragile X

Bear lab (Bear 3rd from left, McCamphill on right)

FRAXA Investigator and MIT Professor Mark Bear and his colleagues have identified a valuable new target for Fragile X therapeutics: GSK3 alpha. Several FRAXA research teams previously identified GSK3 beta as a treatment target for Fragile X. The catch is that, so far, GSK3 beta inhibitors have proven too toxic for regular use. Dr. Bear’s new discovery opens up the possibility of developing more selective compounds with less toxicity and fewer side effects. Interestingly, lithium inhibits both GSK3 versions – alpha and beta.

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Companies Move to Advance Potential Cognitive Treatment for Fragile X

Tetra Therapeutics and Shionogi announced plans to expand their partnership supporting BPN14770, a treatment candidate for disorders marked by cognitive and memory deficits, including Fragile X syndrome and Alzheimer’s disease. The agreement builds on an earlier collaboration between the two companies, and aims to further accelerate BPN14770’s development and potential marketing. It is currently in clinical testing in both Fragile X and Alzheimer’s patients.

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Ketogenic Diet Eases Symptoms in Fragile X Male Mice

Fragile X Researcher, Cara Westmark, PhD

The Westmark laboratory continues to study sleep and rest-activity cycles in Fragile X mice as a potential outcome measure that correlates between preclinical and clinical research. The analysis of sleep EEG in the mice has proven more labor intensive than they anticipated, but the team is collaborating with Dr. Rama Maganti’s laboratory at UW-Madison on the development of computer scrips to speed up the analysis.

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Drug Repurposing for Rare Disease and the Future of Health – The Genetics Podcast

In this double-bill episode of The Genetics Podcast, Dr. Patrick Short talks to two key rare disease researchers in the field: Dr. Bruce Bloom, CCO of Healx, and Dr. Mike Tranfaglia, CSO of FRAXA. Both draw on their wide-ranging personal and professional experiences to discuss the successes and opportunities of drug repurposing, the power of using machine learning, and the work they’ve been doing to aid in finding effective treatments for Fragile X.

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Less Active Immune System Evident in Fragile X Patients, Study Suggests

People with Fragile X syndrome are more likely to develop infections, but are less susceptible to autoimmune disorders than the overall population, a new study found. Taken together, this suggests that the immune system is underactive in this patient population. The study, titled, “The phenotypical implications of immune dysregulation in Fragile X syndrome,” was published in the European Journal of Neurology.

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Results Reported: Using EEG Responses to Sound for Fragile X Drug Discovery

Dr. Jonny Lovelace and Dr. Khaleel Razak

Jonathan Lovelace, a FRAXA funded Postdoc at UC Riverside, has made some exciting EEG findings over the past few years studying auditory hypersensitivity in mice and therapeutic drug treatments. A big obstacle in FXS research has been establishing reliable, unbiased, and translation relevant biomarkers that can be used to determine the effectiveness of therapies. One of the most important discoveries they have made is the striking similarity in EEG biomarkers between mice and humans.

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Should You Participate in a Fragile X Clinical Trial?

A Fragile X clinical trial of a new PDE4D allosteric inhibitor from Tetra Therapeutics is nearly complete. Right now there are 3 remaining spots open to males 18-45 years of age with Fragile X syndrome. Dr. Elizabeth Berry-Kravis at the Rush University Medical Center in Chicago is leading this trial. The drug being studied has a unique mechanism of action that might improve cognitive and memory function.  

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FXS Patients’ Social Deficits are Linked to Social Anxiety, Eye-tracking Study Says

Dr. Craig Erickson and colleagues at the University of Cincinnati used eye-tracking technology to understand sociability in Fragile X syndrome. This study affirms what so many parents, caretakers, and educators suspect: people with fragile X want to be social, and it is anxiety – not lack of interest – which usually hold them back. If anxiety could be reduced, more sociability would likely follow. Dr. Erickson is a Fragile X expert and FRAXA investigator who is currently conducting a Fragile X clinical trial of an investigational new drug.

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Tetra Announces $40M to Advance BPN14770 for FXS and Alzheimer’s Disease

Tetra Discovery Partners has signed a multi-part deal that could bring it up to $160 million, plus royalties, from Shionogi & Co, Ltd, a Japanese major research-driven pharmaceutical company. Tetra currently is conducting an investigational Phase 2 study of BPN14770 in adults with Fragile X Syndrome, an indication for which BPN14770 has received Orphan Drug Designation from the US Food and Drug Administration. This clinical trial was made possible by early work with the FRAXA-DVI and over $200,000 from FRAXA.

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Non-Invasive Imaging as a Biomarker for Fragile X Clinical Trials

Andreas Frick and Kamila Castro

FRAXA Research Foundation has renewed Kamila Castro’s 2017 FRAXA Fellowship for a second year. With this $90,000 award, Kamila Castro and Principal Investigator Dr. Andreas Frick are using non-invasive magnetic resonance imaging (MRI) methodology to assess connectivity changes in the brain in Fragile X. If this project is successful, we will have objective outcome measures to evaluate new treatments, both in mice bred to mimic Fragile X and in human patients.

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Mega Green Tea Extract to Treat Fragile X?

Green tea is thought to have many benefits, particularly in cognitive function. In 2012-14, FRAXA Research Foundation funded a clinical trial to assess the effects of EGCG (green tea extract) on cognitive function in adults with FXS. Drs. Rafael de la Torre and Mara Dierssen Sotos, principal researchers in Barcelona, Spain, reported memory, attention, and mental flexibility improvements.

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Retinoic Acid Signaling is Blocked by Fragile X Mutation

Human Neurons

With a 2013-2014 FRAXA Research Grant, Principal Investigator Marius Wernig, PhD and FRAXA Fellow Samuele Marro, PhD at Stanford University found that the Fragile X mutation impairs homeostatic plasticity in human neurons, by blocking synaptic retinoic acid signaling. Retinoic acid is a metabolite of Vitamin A. The system they have developed could provide a powerful new cellular biomarker for screening many treatment approaches.

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