Encouraging preliminary 6-month results in the Phase I/II trial of Batten-1 in Batten disease (CLN3)

Lyon, France – Austin, Texas, United States – 14 June 2023 – 7.30am CEST – Theranexus, a biopharmaceutical company innovating in the treatment of rare neurological diseases, and the Beyond Batten Disease Foundation (BBDF), have today announced encouraging preliminary results achieved with their drug candidate, Batten-1, in juvenile Batten disease as part of the Phase I/II ongoing trial after 6 months of treatment. These preliminary results suggest an effect of Batten-1 on neuronal death and initial signs of clinical efficacy.

Theranexus and BBDF are conducting a Phase I/II trial of their drug candidate in six patients with Batten disease (CLN3) aged 17 years and over who are due to receive treatment over a 24-month period. The first results of this Phase I/II trial after 9 weeks of treatment showed a good tolerability and pharmacokinetic profile for Batten-1. The new preliminary results, achieved after 6 months of treatment, show an average 17% decline in neurofilament light chain (NfL) levels in the blood of dosed patients. Neurofilaments are a recognized biomarker of neurodegeneration. Moreover, motor symptoms assessed by the modified physical subscale of the disease- specific UBDRS did not progress over the same period (mean score of 31.8 after 6 months of treatment as against 32.4 at baseline), whereas according to data available describing the natural course of the disease, this clinical score should have progressedby around one point in these patients. Lastly, the drug candidate continues to show a good tolerability profile after six months of treatment.

Read the full press release here.

Expert Insights on Gene Therapy for International Batten Awareness Day

Neuronal ceroid lipofuscinosis (NCL) is a group of 13 rare inherited lysosomal disorders affecting the nervous system which are collectively referred to as Batten disease.1 According to the Batten Disease Support and Research Association (BDSRA), Batten disease is estimated to occur in approximately 2 to 4 in 100,000 births in the United States; however, the BDSRA indicates that the actual occurrence may be even higher.

Several companies are currently developing gene therapies intended to treat specific forms of Batten disease. Among these are REGENXBIO, which is developing RGX-181 and RGX-381 for the CLN2 subtype; Lexeo Therapeutics, which is developing LX1004 for the CLN2 subtype; and Taysha Gene Therapies, which is developing TSHA-118 for the CLN1 subtype.2-4 RGX-381 is specifically intended to address the ocular manifestations of CLN2; as of March 30, 2023, a phase 1/2 clinical trial (NCT05791864) for the therapy is active, but not yet recruiting. RGX-181 remains in preclinical development. According to Lexeo and Taysha’s respective pipeline overviews, LX1004 and TSHA-118 have entered clinical development.

Read the full article here.

Theranexus and BBDF granted positive opinion by EMA for the design of Phase III trial to evaluate Batten-1 in CLN3 Batten disease

Lyon, France – Austin, Texas, United States – 7 June 2023 – 7.30 am CEST – Theranexus, a biopharmaceutical company innovating in the treatment of rare neurological diseases, and the Beyond Batten Disease Foundation (BBDF), have today announced receipt of a positive opinion from the European Medicines Agency (EMA) for the design of the pivotal Phase III trial to evaluate their Batten-1 drug candidate for Batten disease.

Read the full press release here.

Theranexus and BBDF win FDA approval on efficacy endpoints for the Phase III trial to evaluate Batten-1 in CLN3 Batten disease

Theranexus and BBDF win FDA approval on efficacy endpoints for the Phase III trial to evaluate Batten-1 in CLN3 Batten disease

  • Phase III’s primary endpoint will be visual acuity, with secondary endpoints including assessment of cognitive and motor functions,
  • The FDA confirmed that this sole Phase III trial would secure Batten-1 approval for Batten CLN3 disease.

Lyon, France Austin, Texas, United States 9 May 2023 7.30am CEST Theranexus, a biopharmaceutical company innovating in the treatment of neurological diseases, and the Beyond Batten Disease Foundation (BBDF), have today announced receipt of approval from the Food and Drug Administration (FDA) for the design and primary and secondary endpoints of the pivotal Phase III trial for Batten disease CLN3, at a meeting with the Division of Rare Diseases and Medical Genetics (DRDMG) held in mid-April.

We are delighted with the constructive discussions we had with the FDA on defining the endpoints of Batten-1 and the design of our pivotal Phase III trial. Its valuable guidance allows us to get fully prepared for the trial launch,” explained Theranexus’ Chief Medical Officer Marie Sebille.

We would like to thank the FDA for its support, which is fundamental to the development of our Batten-1 drug candidate, the only asset in active clinical development for Batten disease (CLN3). Our pivotal Phase III trial will enable us to gain approval for Batten-1, and also deliver rich news flow throughout the duration of the Phase III trial thanks to the parallel open-label patient cohort. More generally, we have no doubt that we can deliver a therapeutic response for patients suffering from Batten disease,” added Theranexus’ CEO Mathieu Charvériat.

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BBDF Presents at World Symposia 19th Annual Scientify Meeting

BBDF was proud to partner with Theranexus and Engaged Health to present Understanding the Functional Burden of CLN3 Through the Eyes of Patients and Families at the World Symposia 19th Annual Scientify Meeting.

Contributors and attendees are contributing to the ongoing goal of providing the latest advances in lysosomal disease research and treatment to a global audience.

View the Presentation Slides

 THERANEXUS, BBDF AND CARDIFF UNIVERSITY PRESENT THEIR NOVEL RESEARCH ON BATTEN-1 AND BATTEN DISEASE AT WORLDSYMPOSIUM 2023 

From 22 to 26 February 2023 in Orlando, Florida 

Presentation of preclinical data demonstrating how Batten-1 drastically reduces the buildup of toxic glycosphingolipids in Batten disease and a poster describing for the first time the burden of Batten disease. 

Lyon, France – Austin, Texas, United States – Cardiff, UK – 20 February 2023 – 6pm CET – Theranexus, a biopharmaceutical company innovating in the treatment of neurological diseases and pioneer in the development of drug candidates modulating the interaction between neurons and glial cells, and its partners Beyond Batten Disease Foundation (BBDF) and Cardiff University, today announced several presentations at WORLDSymposium 2023, an international scientific event focused on lysosomal diseases (22 to 26 February in Orlando, Florida – United States). 

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NCL Congress Report

BBDF sponsored Ineka Whiteman, PhD to attend the 7th Meeting Translational Research Conference for the Management of NCLs in Chicago, November 2022.

As part of the grant, Dr. Whiteman prepared a Research Report for Families, a comprehensive update of the research landscape for CLN3 disease. This information was shared on the January 2023 Family Research update call. If you are interested in joining BBDF’s quarterly family calls, please email info@beyondbatten.org and let us know that you would like to be added to our list.

 

View the full report here

New Advance to the Theranexus and BBDF Batten-1 Program for Juvenile Batten Disease (CLN3)

Beyond Batten Disease Foundation is excited to share the latest accomplishment on our journey to find a treatment for juvenile Batten disease. Six young adults over 17 years old have been successfully treated with miglustat over the past year. The results show that the drug is safe to use at the maximum dose. These results, in conjunction with a recent meeting with the FDA, allow us to proceed to the Phase III efficacy trial in 2023. Your support has been critical in the development of this program. We are one step closer to having the first ever treatment for CLN3 disease. Thank you for making this possible.

Theranexus and BBDF Finalize Recruitment For Phase I/II Trial to Evaluate Batten-1 in Batten Disease

Lyon, France – Austin, Texas, United States – 6 September 2022 – 6 pm CEST – Theranexus, a biopharmaceutical company innovating in the treatment of neurological diseases and pioneer in the development of drug candidates modulating the interaction between neurons and glial cells, and the Beyond Batten Disease Foundation (BBDF), have today announced finalization of recruitment of the last patient for the Phase I/II clinical trial to evaluate the tolerability, pharmacokinetics of the Batten-1 drug candidate in juvenile (CLN3) Batten disease.

A total of six patients with juvenile Batten disease aged 17 and over are enrolled in the Phase I/II clinical trial. The Batten-1 drug candidate containing the active ingredient miglustat is administered in escalating doses. The initial tolerability and pharmacokinetic data for miglustat obtained after the first 9 weeks of treatment in this population will serve to initiate Phase III, and Phase I/II patients are being treated and evaluated over a 24-month period.

Franck Mouthon, Chairman of Theranexus, said: “Finalization of recruitment for our Phase I/II trial is an important milestone in the development of Batten-1, a drug candidate that aims to significantly slow progression of juvenile Batten disease for which there is currently no available treatment. Our goal for the next stages in the development process is to launch an international pivotal Phase II/III trial in 2023.”

Craig Benson, Chair of the Beyond Batten Disease Foundation, added: “As parents and representatives of patients with juvenile Batten disease and their families, we are delighted with the enrollment of the last patient in the Phase I/II trial. This new Batten-1 treatment offers tremendous hope for our children affected by the disease.”

The Phase I/II trial is being conducted by referral centers for Batten disease in the United States, with Dr. Gary Clark, Chief of Child Neurology at Texas Children’s Hospital in Houston, as principal investigator.

About Batten-1
Batten-1 is a novel and exclusive proprietary drug containing the active ingredient miglustat. The mechanism of action of this substance blocks the accumulation of glycosphingolipids and neuroinflammation to prevent brain cell death. In the Phase I/II trial, Batten-1 is administered to patients over 17 years of age in solid form, and in Phase III it will be administered in a liquid form better suited to children.

About Batten disease
Juvenile Batten disease, also known as Spielmeyer-Vogt or CLN3 disease, is a rare, fatal, inherited disorder of the nervous system for which there is no treatment or cure. Juvenile Batten disease belongs to a group of disorders referred to as neuronal ceroid lipofuscinoses (NCLs). Over 400 different errors in 13 genes have been attributed to various forms of NCL, which differ from one another primarily by when symptoms first appear. The first symptom in the juvenile form, progressive vision loss, appears between the ages of 4 and 6 which is followed by personality changes, behavioral problems, and slowed learning. Seizures commonly appear within 2-4 years of the onset of disease. Over time, patients continue to decline mentally and physically. Eventually, those affected become wheelchair-bound, are bedridden, and die prematurely. Psychiatric symptoms or psychosis can appear at any time.

Juvenile Batten disease is always fatal; usually by the late teens to early 20s. In the United States and Europe, the juvenile form is the most common of the NCLs, which together, affect nearly 3,000 patients. In pathophysiological terms, interactions between neurons and glial cells play key roles in the emergence and progression of all the NCLs.
About Beyond Batten Disease Foundation

Beyond Batten Disease Foundation (BBDF) is the world’s largest nonprofit organization dedicated to funding research for a treatment and cure for juvenile (CLN3) Batten disease. Since its inception in 2008, over $35 million has been invested in research by leveraging donations, co-funding and strategic partnerships. BBDF is spearheading a unique, cohesive strategy, incorporating independent scientific resources and collaboration with related organizations to drive research in juvenile Batten Disease . Today there is a treatment in sight. BBDF funded research has discovered a drug – Batten-1 – that slows the progression of the disease in Batten models. More information can be found at www.beyondbatten.org

About Theranexus
Theranexus is an innovative biopharmaceutical company that emerged from the French Alternative Energies and Atomic Energy Commission (CEA). It specializes in the treatment of central nervous system disorders and is a pioneer in the development of drug candidates targeting both neurons and glial cells.

The company has a unique platform for the identification and characterization of advanced therapy drug candidates targeting rare neurological disorders and an initial drug candidate in clinical development for Batten disease.
Theranexus is listed on the Euronext Growth market in Paris (FR0013286259- ALTHX).

Next financial publication:
Tuesday 27 September 2022: First half 2022 financial results

More information at http://www.theranexus.com

Contacts
THERANEXUS
Thierry Lambert
Chief Financial Officer
contact@theranexus.com

NEWCAP
Théo Martin/Pierre Laurent
Investor Relations
+33 (0)1 44 71 94 97
theranexus@newcap.eu

FP2COM
Florence Portejoie
Media Relations
+ 33 (0)6 07 76 82 83
fportejoie@fp2com.fr

Disclaimer
This press release contains certain forward-looking statements concerning Theranexus and its business, including its prospects and product candidate development. Such forward-looking statements are based on assumptions that Theranexus considers to be reasonable. However, there can be no assurance that the estimates contained in such forward-looking statements will be verified, which estimates are subject to numerous risks including the risks set forth in the universal registration document of Theranexus filed with the AMF on 28 April 2021 under number D.21-0379 (a copy of which is available on www.theranexus.com) and to the development of economic conditions, financial markets and the markets in which Theranexus operates. The forward-looking statements contained in this press release are also subject to risks not yet known to Theranexus or not currently considered material by Theranexus. The occurrence of all or part of such risks could cause actual results, financial conditions, performance or achievements of Theranexus to be materially different from such forward-looking statements. Theranexus expressly declines any obligation to update such forward-looking statements.

 

[1] National Organization for Rare Disorders (NORD)/Orphanet
[2] Settembre et al, TFEB links autophagy to lysosomal biogenesis, Science 2011

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