DALLAS--(BUSINESS WIRE)--Taysha Gene Therapies, Inc. (Nasdaq: TSHA) (Taysha), a patient-centric, clinical-stage gene therapy company focused on developing and commercializing AAV-based gene therapies for the treatment of monogenic diseases of the central nervous system (CNS) in both rare and large patient populations, today highlighted its strategic priorities and provided a business outlook for 2021.

We enter 2021 having built a strong foundation on which to execute our corporate and pipeline objectives. Notably, we expanded our seasoned leadership team and esteemed board of directors steeped in gene therapy development and commercialization expertise, successfully raised funds in our initial public offering, transitioned from a preclinical- to a clinical-stage company, and achieved important progress on R&D initiatives and our three-pillar manufacturing strategy, said RA Session II, President, Founder and CEO of Taysha. 2021 will be a transformational year as we intend to rapidly advance multiple drug candidates to clinical proof-of-concept, further expand our platform-enabled pipeline and advance next-generation technologies. Specifically, we expect to report clinical data for our GM2 gangliosidosis program in the second half of this year and have multiple ongoing clinical studies by year end. We also anticipate several IND/CTA submissions across three CNS franchises and have multiple therapies in IND/CTA-enabling studies while advancing four new programs into preclinical development. In addition, we are excited to advance our next-generation platform technologies and further our efforts in redosing, transgene regulation and capsid development. We believe that our platform will drive future sustained innovation and value creation and look forward to highlighting the productivity of our platform in an R&D day later this year. Lastly, we continue to make progress on cGMP facility and process development capabilities with the completion of the design phase and initiation of procurement of long lead equipment.

Anticipated Milestones by Program

TSHA-101 for infantile GM2 gangliosidosis: the first bicistronic gene therapy in clinical development designed to deliver two genes HEXA and HEXB intrathecally for the treatment of infantile GM2 gangliosidosis, also called Tay-Sachs or Sandhoff disease

TSHA-118 in CLN1: a self-complementary AAV9 viral vector designed to express a human codon-optimized CLN1 transgene to potentially treat CLN1, a rapidly progressing rare lysosomal storage disease with no approved treatments

TSHA-102 in Rett syndrome: a self-complementary AAV9 gene therapy in development for one of the most common genetic causes of severe intellectual disability, designed to deliver MECP2 as well as a novel miRARE platform that regulates transgene expression on a cell-by-cell basis

TSHA-104 in SURF1-associated Leigh syndrome: a self-complementary AAV9 viral vector with a codon optimized transgene encoding the human SURF1 protein to potentially treat SURF1-associated Leigh syndrome, a monogenic mitochondrial disorder with no approved treatments

Pipeline programs advancing into IND/CTA-enabling studies

Discovery programs

Next-generation technology platform

Anticipated Corporate Milestones in 2021

About Taysha Gene Therapies

Taysha Gene Therapies (Nasdaq: TSHA) is on a mission to eradicate monogenic CNS disease. With a singular focus on developing curative medicines, we aim to rapidly translate our treatments from bench to bedside. We have combined our teams proven experience in gene therapy drug development and commercialization with the world-class UT Southwestern Gene Therapy Program to build an extensive, AAV gene therapy pipeline focused on both rare and large-market indications. Together, we leverage our fully integrated platforman engine for potential new cureswith a goal of dramatically improving patients lives. More information is available at http://www.tayshagtx.com.

Forward-Looking Statements

This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Words such as anticipates, believes, expects, intends, projects, and future or similar expressions are intended to identify forward-looking statements. Forward-looking statements include statements concerning or implying the potential of our product candidates to positively impact quality of life and alter the course of disease in the patients we seek to treat, our research, development and regulatory plans for our product candidates and early-stage programs, the potential for these product candidates to receive regulatory approval from the FDA or equivalent foreign regulatory agencies, and whether, if approved, these product candidates will be successfully distributed and marketed, our corporate growth plans and our plans to establish a commercial-scale cGMP manufacturing facility to provide preclinical, clinical and commercial supply. Forward-looking statements are based on managements current expectations and are subject to various risks and uncertainties that could cause actual results to differ materially and adversely from those expressed or implied by such forward-looking statements. Accordingly, these forward-looking statements do not constitute guarantees of future performance, and you are cautioned not to place undue reliance on these forward-looking statements. Risks regarding our business are described in detail in our Securities and Exchange Commission (SEC) filings, including in our Quarterly Report on Form 10-Q for the quarter ended September 30, 2020, which is available on the SECs website at http://www.sec.gov. Additional information will be made available in other filings that we make from time to time with the SEC. Such risks may be amplified by the impacts of the COVID-19 pandemic. These forward-looking statements speak only as of the date hereof, and we disclaim any obligation to update these statements except as may be required by law.

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Taysha Gene Therapies Highlights Strategic Priorities and Provides 2021 Business Outlook - Business Wire