Achieving Predictability: Developing Biomarkers for Fragile X Patients
FRAXA funds biomarker research to identify objective, measurable signals of Fragile X, helping predict who will respond to treatments and improving clinical trial success.
New compound from Anavex Improves Learning and Behavior in Fragile X Mice
The investigational drug Anavex 2-73 was able to improve intellectual, learning and hyperactivity measures in a mouse model of Fragile X syndrome. This is a sigma-1 receptor agonist.
Meltdown no more? Targeting Hypersensitivity in Fragile X
Meet Khaleel Razak, PhD, and Jonathan W. Lovelace, PhD, FRAXA-funded researchers at University of California, Riverside who are tackling Fragile X.
Double Down: Fragile X Clinical Trial Combines Two Available Drugs
FRAXA funded a trial combining lovastatin and minocycline to test whether targeting multiple pathways can improve brain activity and behavior in Fragile X.
Fragile X Fruit Fly Research Bears Fruit
A FRAXA-funded study shows how the hormone insulin – usually associated with diabetes — is involved in daily activity patterns and learning deficits in the fruit fly model of Fragile X Syndrome.
Can STEP Inhibitors Treat Fragile X Syndrome? Yale Professor Investigates
Yale Professor Paul Lombroso, MD, is testing STEP inhibitors to improve cognitive and social behaviors in those affected by Fragile X syndrome.
Abnormalities of Synaptic Plasticity in the Fragile X Amygdala
With FRAXA funding, Dr. Sumantra Chattarji at NCBS explored how Fragile X alters amygdala function. Results were published.
Resources for Families: Fragile X – A to Z and Medication Guide
FRAXA welcomed intern Emily Fluet from the University of St. Andrews, who transformed our Fragile X A–Z and Medication Guide into online resources!
Targeting AMP-Activated Protein Kinase Pathway in Fragile X Syndrome
With this grant from FRAXA, Dr. Peter Vanderklish explored AMPK activators to treat Fragile X. Both metformin and resveratrol, found in red wine, are AMPK activators.
Fruit Flies to Model and Test Fragile X Treatments
Boosting cAMP signaling restores memory and fixes brain-signaling defects in Fragile X models, suggesting diabetes drugs like metformin may help.
Analysis of Developmental Brain Dysfunction in Families
No strong behavioral similarities were found between parents and children with Fragile X, indicating family history may not guide clinical trial recruitment.
Crossroads of Fragile X and Alzheimers Research
Researchers at VIB Leuven in Belgium published evidence that a brain pathway involving the protein APP (Amyloid Precursor Protein) plays a vital role in development of Fragile X syndrome.
Fragile X Treatment: New Research Directions
In the wake of negative results from several high-profile clinical trials in Fragile X, we find ourselves questioning many of our previous assumptions about the nature of this disorder.
Fragile X Programs at UMASS – University of MA, Worcester
Fragile X Syndrome Behavioral Health Clinic The Center for Autism and Neurodevelopmental Disorders (CANDO) is opening a specialty clinic for individuals with Fragile X Syndrome (under the direction of Dr. Jean Frazier) to evaluate and provide treatment for behavioral challenges.
Inhibitors of STEP as a Novel Treatment of Fragile X Syndrome
STEP inhibition reversed behavioral and synaptic Fragile X deficits in mice (Neuropharmacology, 2018), highlighting STEP as a promising treatment target.
Molecular Mechanisms of Cytoskeletal Regulation by FMRP
With FRAXA funding, Dr. Jaffrey linked FMR1 loss to abnormal dendritic spines via RhoA signaling, suggesting RhoA-targeted therapies could help treat Fragile X.
Neuren’s NNZ-2566 Shows Clinical Benefit in Rett Syndrome Trial
This isn’t a Fragile X trial, but the Neuren compound, NNZ-2566, that is in trials now for Fragile X has shown significant positive effects in a Phase 2 trial for Rett syndrome.
Clinical Trials Outcome Measures
There is a critical need for reliable biomarkers and clinical outcome measures for Fragile X syndrome. Treatment trials depend on this.
Why Did Fragile X Clinical Trials of mGluR Antagonists Fail?
by Michael Tranfaglia, MD. In my opinion, the Fragile X clinical trials of AFQ056 sponsored by Novartis failed because of a dose range that was inadequate for Fragile X, and because of the unexpected development of tolerance.
Fragile X Clinical Trial: Novartis Trial Results Are In, and They’re Not Pretty
This year’s Gordon Conference just finished, and Novartis presented their results. To say that the trial results for AFQ056 were disappointing would be the understatement of the century!
Novartis Discontinues Development of mavoglurant (AFQ056) for Fragile X Syndrome
Mavoglurant trials in Fragile X did not show improvement vs. placebo, leading Novartis to end the program and wind down the open-label extension.
Social Behavior as an Outcome Measure for Fragile X Clinical Trials
FRAXA funding helped identify reliable social behavior tests in Fragile X mice and showed an mGluR5 treatment could improve sociability, guiding future trials.
Glycogen Synthase Kinase-3 (GSK3), Lithium and Fragile X
Dr. Jope found that lithium (at usual therapeutic doses) and investigational GSK3 inhibitors can reverse a number of cognitive deficits in FMR1 knockout mice.
Development of a Novel GABA-A Agonist in Fragile X Syndrome
FRAXA funded analysis of a selective GABA-A drug for Fragile X, leading to a clinical trial at Cincinnati Children’s to test this potential treatment.