Bcl-xL Inhibition as a Therapeutic Strategy for Fragile X Syndrome
Fragile X neurons show leaky mitochondria and excess Bcl-xL–driven synapses. Targeting this pathway may restore energy balance and healthier brain development.
Roche reports clinical trial negative results
Roche has shared the sad news that their clinical trials in Fragile X have been unsuccessful. They will host a Webcast on Thursday, September 18, from 12:30pm – 1:30pm (EDT) to explain the results. For details and dial-in information please see this letter from Luca Santarelli, the Head of Neuroscience, Ophthalmology and Rare Diseases at Roche Pharma Research and Early Development on…
Seizures in Fragile X Syndrome and Therapeutic Potential of NMDA Receptor Antagonists
Dr. Wong studies how NMDA and mGluR receptors interact to trigger seizures in Fragile X, revealing NR2B-specific blockers as a promising targeted treatment.
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 Syndrome Treatment Target: MMP-9
Dr. Ethell was awarded FRAXA Research Foundation funding from 2008-2011 and 2012-present. This latest work shows that human Fragile X tissues have elevated levels of the extracellular enzyme MMP-9, as well as an increase in the active fraction of that protein (like most enzymes, MMP-9 can exist in an inactive form which can be switched on rapidly; this kind of regulation is important in most biological pathways.)
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 for the first time (though advisors and advocates had been given a private peak months ago.) 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.
New Clue to Fragile X and Autism Found Inside Brain Cells
FRAXA-funded research revealed that mGluR5 isn’t only on the cell surface. Drugs may need to reach internal receptors to be effective in Fragile X.
What Treatments Work for FXTAS?
FXTAS affects many in our Fragile X community. Research aims to uncover its cause and guide more effective treatments.
Scientists Uncover Trigger for Fragile X Syndrome
A Weill Cornell team discovered that Fragile X stems from a gene being shut off—and a compound that blocks this process may prevent the condition.
Small Molecules To Target r(CGG) Expansions to Treat Fragile X Syndrome
FRAXA-funded scientists created small molecules that target the CGG repeat “off-switch” in Fragile X, aiming to restore the missing FMRP protein at its source.
Molecular mechanisms: Enzyme blockers help Fragile X mice
Dr. Jope won the 2013 FRAXA Pioneer Award for showing that lithium and other GSK-3–blocking drugs can reverse cognitive deficits in Fragile X mice.
This Is My Brother, speech by Elizabeth Clark at FRAXA’s Fall X Ball
At FRAXA’s 11th Annual Fall X Ball, Elizabeth Higgins Clark spoke with humor and heart about her brother David, who has Fragile X.
Fragile X Syndrome Protein Linked to Breast Cancer Progression
Dr. Claudia Bagni’s team discovered that FMRP can act as a master switch in aggressive breast cancer, controlling proteins that drive invasion and metastasis.
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.
Translation-Independent Functions of FMRP in Excitability, Synaptic Transmission and Plasticity
Study pinpointed presynaptic calcium dysfunction as the driver of STP defects in Fragile X, and BK channel activation restored normal synaptic signaling.
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.
The mTOR Pathway in Fragile X Syndrome
FRAXA-funded research showed that blocking S6K1 in Fragile X mice improves social, behavioral, and physical symptoms.
Matrix Metalloproteinase Therapeutic Treatments for Fragile X Syndrome
Dr. Broadie showed that MMP enzymes disrupt synapse development in Fragile X. MMP inhibitors (e.g. minocycline) improved connectivity and behavior in fruit flies.
Fragile X Treatment Strategy Emerges from FRAXA Research: IGF-1
Neuren’s Trofinetide, part of a promising IGF-1 drug class, showed standout results in Fragile X mice—outperforming Rett syndrome models.
Makenzie Cote’s Page
In honor of Makenzie, diagnosed with Fragile X at 16 months, our family crafts and sells handmade items to support FRAXA research
Lovastatin Discovery in Fragile X Mice Leads FRAXA to Fund Clinical Trials
FRAXA honored Dr. Emily Osterweil for discovering that lovastatin can correct key Fragile X abnormalities. Her findings were published in Neuron.
Treatment of Fragile X Syndrome via Dopamine Enhancers and Glutamate Inhibitors
In Fragile X mice, low dopamine signaling and excessive glutamate activity were targeted with dual therapy: dopamine enhancers plus glutamate inhibitors.