Encoded Therapeutics

Great article from Endpoints News today highlighting our latest ETX101 data in #DravetSyndrome presented at #ASGCT2026. Check out the article here: endpoints.news/encodeds-gene-… endpoints.news/encodeds-gene-…

Appreciating the coverage from @BiotechTV on our latest ETX101 data in #DravetSyndrome presented at #ASGCT2026. Thanks for helping share the story.

Big moment at #ASGCT2026 today! Read our release for details on ETX101 data in #dravetsyndrome being featured today in the Presidential Symposium presentation: bit.ly/4djirul

Today’s release shares preclinical data from #ASGCT2026 showing the potential of our precision vector engineering platform to enable one time gene therapies. bit.ly/4ntVZU4

Announcing strong pipeline momentum with new milestones for ETX101 in Dravet syndrome and ETX301, our candidate for post-amputation neuroma pain. Learn more: bit.ly/4wbByPn

Don’t miss Dr. Joe Sullivan, VP Clinical Development, speaking in Session 12 at #EILATXVIII on Developing Gene Therapies for DEEs on May 6.

Encoded will present data and insights from our POLARIS program for ETX101 for Dravet syndrome at #EILATXVIII on 5/ 4 from 4:15 – 4:35 CET. Learn more: bit.ly/3P4z7NY

We’re back from Epilepsy Awareness Day presented by Sofie's Journey. We’re grateful for the opportunity to connect with the epilepsy community in a meaningful way and for the insights that directly shape how we show up as partners. Thank you to everyone – patients, physicians, and other collaborators – who spent time and shared their stories with us. We’re inspired to carry this momentum forward — grounded in real experiences and focused on what matters most.

Encoded is headed to #ASGCT2026, where we’ll present three abstracts — an oral presentation in the Presidential Symposium highlighting continued progress with ETX101, and two scientific posters showcasing our vector engineering approach and its potential to deliver precision one time genetic medicines for neurological disorders. Details are below and in the link: ow.ly/azgZ50YQNTj Oral Presentation: Safety and Efficacy of ETX101, an Investigational AAV9-based Gene Therapy for SCN1A+ Dravet Syndrome: Interim Results from the POLARIS Phase 1/2 Clinical Trials • Session: General Session: Presidential Symposium • Location: Exhibit Hall B1 (Exhibit Level) • Date and Time: Wednesday, May 13, 2026; 2:26 PM – 2:37 PM ET Poster Presentation: NociPro: A Novel Modality-Agnostic Promoter Platform for Precise Cellular Targeting of Nociceptor Sensory Neurons in Gene Therapy for Chronic Pain • Abstract Number: 1312 • Location: Poster Hall • Date and Time: Tuesday, May 12, 2026; 5:00 PM – 6:30 PM ET Poster Presentation: An Experimental Intravenous AAV-miRNA-based Approach Achieves Broad Neuronal Transduction and UBE3A Unsilencing for the Treatment of Angelman Syndrome • Abstract Number: 1468 • Location: Poster Hall • Date and Time: Tuesday, May 12, 2026; 5:00 PM – 6:30 PM ET

Thank you, @neurology_live, for featuring our POLARIS program for ETX101 for Dravet syndrome in this month’s Clinical Trial in Focus. Every opportunity to elevate the science—and the needs of this community—helps move us closer to meaningful, lasting change for patients and caregivers. neurologylive.com/view/exploring…

Today, we announced the successful completion of our Initial Comprehensive Multidisciplinary Regenerative Medicine Advanced Therapy (RMAT) meeting with the FDA, confirming the pivotal study design in 30 patients with Dravet syndrome and aligning on expansion of the Phase 1/2 open label study to include older children and adolescents. The initiation of both studies is already underway. In addition, new data from the POLARIS clinical program of ETX101 will be presented during the Presidential Symposium at the #ASGCT2026 Annual Meeting taking place in Boston, from May 11 – 15, 2026. We look forward to advancing ETX101 toward its next milestones and continuing our work on behalf of the Dravet community. Learn more: ow.ly/5Xnj50YyE4M

This International Epilepsy Day, we’re proud to support efforts to raise visibility for epilepsy and deepen understanding for those affected. We know it takes a community to advance new therapies, and we’re committed to working alongside patients and their families every step of the way — so that together we can transform hope into possibilities. #epilepsyday

New insights from up to two-year ENVISION natural history data, published in Epilepsia, shed light on the early emergence and progression of behavioral and social–emotional challenges in young children with SCN1A+ Dravet syndrome: Problematic behaviors often begin before age 3 years and intensify through early childhood, spanning inattention, externalizing behaviors (including aggression), social withdrawal, and autistic features. Notably, poorer communication and adaptive skills were associated with more severe behavioral difficulties—underscoring the importance of early diagnosis to enable targeted management. Scheffer IE, et al. Characterizing early behavioral and social-emotional problems in young children with SCN1A+ Dravet syndrome: Findings from the ENVISION prospective natural history study. Epilepsia. 2026 Feb 2. doi: 10.1002/epi.70127. Epub ahead of print. PMID: 41627953. You can access the published article here: onlinelibrary.wiley.com/doi/10.1002/ep… #dravet, #dravetsyndrome, #naturalhistorystudy, #envision, #SCN1A+

Exciting news: The FDA granted Breakthrough Therapy Designation to ETX101 based on clinical evidence from the POLARIS Phase 1/2 trials. This designation is reserved for therapies that show early signs of meaningful improvement and is intended to accelerate development and regulatory review. This marks an important milestone in advancing ETX101 with urgency and care for patients and families living with Dravet syndrome. Read today’s release for more information: ow.ly/qQNH50XVKtb #DravetSyndrome

Today, we provided a summary of the significant progress made in 2025 with our Dravet syndrome candidate, ETX101, including positive interim Phase 1/2 results presented at the American Epilepsy Society Annual Meeting, advances across our gene therapy pipeline, and anticipated 2026 milestones. Read today’s press release for details: ow.ly/lcLe50XTymY #JPM2026 #DravetSyndrome #AES2026

Today, we announced that our CEO, Dr. Kartik Ramamoorthi, will present a corporate overview and 2026 outlook at the 44th Annual J.P. Morgan Healthcare Conference. We hope to see you there! Read today’s press release for details: ow.ly/4Y8950XS3fU #JPM2026

We are delighted to welcome Dr. Joseph Sullivan, M.D., to Encoded as Vice President of Clinical Development. A globally recognized pediatric epileptologist and clinical researcher, Dr. Sullivan brings deep expertise in Dravet syndrome and genetic medicine. He joins us after two decades at the University of California, San Francisco (UCSF), where he directed the Pediatric Epilepsy Program and served as Professor of Clinical Neurology and Pediatrics. Check out today’s press release for more information: ow.ly/HiAh50XKm5C #Dravetsyndrome