Group photo of Callum Cup IX participants gathered at Millburn High School during the annual charity soccer match supporting Fragile X research.

Callum Cup IX Brings Community Together, Raising $20,000 for Fragile X Research

Callum Cup IX brought the Millburn FC community together, raising $20,000 for the FRAXA Research Foundation in support of Fragile X research.

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FRAXA Drug Validation Initiative (FRAXA-DVI)

The FRAXA Drug Validation Initiative (FRAXA-DVI) provides speedy, cost-effective, objective preclinical testing to validate investigational and repurposed compounds for Fragile X.

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Dr. Gary Feldman, Principal Investigator for the MRM-3379 Phase 2 clinical trial at the Irvine, California site, standing with an individual with Fragile X syndrome.

Recruiting: Mirum Launches Clinical Trial of MRM-3379 for Fragile X Syndrome

Mirum’s MRM-3379 Phase 2 trial builds on FRAXA-funded PDE4D research and is now enrolling males ages 13–45 with Fragile X syndrome. View eligibility and study sites.

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Shionogi Shares Update on Zatolmilast Fragile X Clinical Trials

Shionogi shares an update on its zatolmilast Fragile X clinical trials, outlining progress in U.S. studies and next steps in data analysis and evaluation.

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Drs. Peng Jin, Zhexing Wen, and Jie Xu

FMRP Regulatory Role in Human Hippocampal Development and Therapeutic Interventions in Fragile X

Fragile X syndrome hippocampal organoids show neuron–glia imbalance. This team will map disrupted gene networks and test PDE inhibitors to restore brain function.

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FRAXA Q&A Webinar with Dr. Elizabeth Berry-Kravis on the Harmony RECONNECT Trial

Fragile X Research Q&A: Dr. Berry-Kravis on the RECONNECT Trial

Fragile X Research Q&A with Dr. Berry-Kravis on RECONNECT results, placebo effects, outcome measures, methylation, and research directions for families.

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RECONNECT Trial Results: ZYN002 Does Not Meet Primary Endpoint in Fragile X

Harmony Biosciences announced that the Phase 3 RECONNECT trial of ZYN002 in Fragile X syndrome failed to meet its primary endpoint.

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Fragile X Research Update: A Turning Point for Treatments and Curative Approaches

Fragile X research is at a turning point. FRAXA is funding ASO therapy and CRISPR-based gene reactivation to target the root cause of Fragile X.

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Shionogi’s EXPERIENCE Phase 3 Clinical Trial of Zatolmilast in Fragile X Syndrome

Learn more about Shionogi’s EXPERIENCE clinical trials for adults and adolescents with Fragile X syndrome, FRAXA’s role, and the open-label extension of these trials.

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Dr. Thomas Maurin and Dr. Barbara Bardoni, Fragile X researchers and co-authors of a 2025 review on PDE inhibitors published in Cell Reports Medicine.

Fragile X and PDE Inhibitors: A Promising Path Forward for Brain Disorders

Fragile X syndrome research shows PDE inhibitors may improve brain function and behavior, with promise for related neurodevelopmental disorders.

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Callum Cup VIII Scores $19,400 for Fragile X Research – A Milestone Event

Callum Cup VIII, Millburn FC’s annual charity match, scored big with $19,400 raised for Fragile X research, bringing total funds to $148,000!

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NPR Spotlights Zatolmilast: A Potential Breakthrough for Fragile X Syndrome

NPR spotlights zatolmilast, a promising investigational drug to treat Fragile X syndrome. Families report life-changing improvements in learning and independence.

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Exploring Advances Fragile X Research: Comprehensive Webinar Highlights – May 2024

Learn about new FRAXA grants, key clinical trials, and scientific updates that are shaping the future of Fragile X syndrome. Webinar presented by Mike Tranfaglia and Katie Clapp.

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Inside the FRAXA Drug Validation Initiative: Advancing Fragile X Treatments

FRAXA-DVI is revolutionizing Fragile X syndrome research, providing efficient, comprehensive and objective preclinical testing of potential treatments.

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Two-Med Combo Normalized Behavior, Improved Memory in Fragile X Mice

Treating Fragile X might require a combination of drugs. FRAXA-DVI tested ibudilast and gaboxadol in Fragile X mice. Together they rescued a wide array of symptoms.

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ASOs and Fragile X: Addressing the Most Asked Questions

Explore the potential of ASOs in treating Fragile X syndrome & FXTAS. Dive into a comprehensive Q&A addressing key questions and breakthrough findings.

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Coming Together for Rare Disease Day 2023

Today we mark Rare Disease Day. FRAXA is committed to advancing research on Fragile X, one of the most common rare diseases worldwide.

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Fragile X Clinical Trial of New PDE4D Inhibitor from Tetra

A $200K FRAXA grant enabled a successful Phase 2 trial of a PDE4D inhibitor for adult men with Fragile X, showing strong cognitive gains without side effects or tolerance.

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Transcriptional Signatures Sensitive to Cognition-Improving Pharmacological Treatments in Fragile X Syndrome

This team is defining Fragile X “molecular signatures” to use as biomarkers. They’ll test CBD and other drugs in mice and compare findings to human brain data.

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Tetra’s Fragile X Clinical Trial – The Most Successful So Far

Dr. Mark Gurney, CEO of Tetra Therapeutics, discusses how one of the earliest clues to the biology of Fragile X led to the most successful Fragile X clinical trial to date. FRAXA and Tetra began working together after a key FRAXA-funded study caught the attention of Dr. Gurney. Through the FRAXA Drug Validation Initiative, Dr. Patricia Cogram was able to conduct preclinical validation experiments with Tetra’s lead compound in record time, paving the way for clinical trials.

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Positive Results Reported in Phase II Fragile X Clinical Trial of PDE4D Inhibitor Zatolmilast from Tetra Therapeutics

Today, Tetra Therapeutics announces the first unequivocally positive phase 2 clinical trial in Fragile X syndrome, press release below. The results do not depend on carving out a subset of patients or post hoc analysis.

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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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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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Tetra Discovery Partners

Tetra Discovery Partners Initiates Phase 2 Trial of BPN14770 in Fragile X Syndrome

This 2-Period Crossover Study of BPN14770 is accepting adults males with Fragile X syndrome at Rush University Medical Center in Chicago. Principal Investigator of the study is Elizabeth Berry-Kravis, MD, PhD.
A selective inhibitor of the phosphodiesterase type-4D (PDE4D), BPN14770 has shown the ability to improve the quality of connections between neurons and to improve multiple behavioral outcomes in the Fragile X mouse model.

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FRAXA Funded Research

Current Research Grants (37)