Nine abstracts accepted demonstrating potential of HSC gene therapy to treat multiple neurodegenerative disorders

New clinical data from all eight patients treated with OTL-203 for Mucopolysaccharidosis type I (MPS I)

Biomarker data from first three patients treated with OTL-201 for Mucopolysaccharidosis type IIIA (MPS-IIIA or Sanfilippo Syndrome Type A)

Multiple abstracts highlighting clinical and real-world data for OTL-200 and Metachromatic Leukodystrophy (MLD)

Company to host virtual investor webinar to review symposium data on Tuesday, February 9, 2021 at 4:30 p.m. ET

BOSTON and LONDON, Jan. 28, 2021 (GLOBE NEWSWIRE) -- Orchard Therapeutics(Nasdaq: ORTX), a global gene therapy leader, today outlined nine upcoming presentations from its neurodegenerative portfolio to be featured at the 17th Annual WORLDSymposium being held on February 8-12, 2021. Accepted abstracts include clinical data from three of its hematopoietic stem cell (HSC) gene therapy programs OTL-200 for MLD, OTL-203 for MPS-I and OTL-201 for MPS-IIIA as well as data supporting Orchards multi-pronged patient identification and market access strategies for eligible MLD patients in Europe.

Together with our clinical partners, were proud of our presence at the upcoming WORLDSymposium, which for the first time features clinical data on cognitive function and growth in all eight MPS-I patients treated with gene therapy, said Bobby Gaspar, M.D., Ph.D., chief executive officer of Orchard. Alongside emerging data in MPS-IIIA and our extensive body of clinical and real-world data in MLD, our programs are establishing a clear picture of the transformative potential of HSC gene therapy across multiple fatal neurodegenerative conditions.

The presentations are listed below and the full preliminary program is available online on the WORLDSymposium website. The ePosters will open at 2:30 p.m. ET on Monday, February 8, 2021 and will remain open throughout WORLDSymposium 2021.

Orchard is planning to host a virtual investor webinar on Tuesday, February 9th, 2021 at 4:30 p.m. ET to review the data from its neurodegenerative programs presented at the WORLDSymposium. A live webcast will be available under Events in the Investors & Media section of the companys website at http://www.orchard-tx.com and a replay of the webcast will be archived following the event.

Platform Oral Presentation Details:

Ex-vivo autologous stem cell gene therapy clinical trial for mucopolysaccharidosis type IIIA: Update on phase I/II clinical trialPresenting Author: Jane Kinsella, Royal Manchester Childrens Hospital 2021 Young Investigator Award RecipientDate/Time: Tuesday, February 9, 2021, 11:12 a.m. ET

Ex vivo hematopoietic stem cell gene therapy for mucopolysaccharidosis type I (Hurler syndrome)Presenting Author: Bernhard Gentner, San Raffaele Telethon Institute for Gene TherapyDate/Time: Tuesday, February 9, 2021, 11:24 a.m. ET

Lentiviral hematopoietic stem and progenitor cell gene therapy provides durable clinical benefit in early-symptomatic early juvenile metachromatic leukodystrophyPresenting Author: Francesca Fumagalli, San Raffaele Telethon Institute for Gene Therapy, IRCCS San Raffaele Scientific InstituteDate/Time: Wednesday, February 10, 2021, 11:36 a.m. ET

ePoster Presentation Details:

Lentiviral haematopoietic stem cell gene therapy for metachromatic leukodystrophy: Results in nine patients treated with a cryopreserved formulation of OTL-200Abstract Number: 25Presenting Author: Valeria Calbi, San Raffaele Telethon Institute for Gene TherapyDate/Time: Wednesday, February 10, 2021, 2:30 3:30 p.m. ET

Initial signs and symptoms of metachromatic leukodystrophy: A caregiver perspectiveAbstract Number: 64Presenting Author: Florian Eichler, Massachusetts General HospitalDate/Time: Thursday, February 11, 2021, 2:30 3:30 p.m. ET

Demographic and clinical characteristics of patients with metachromatic leukodystrophy in the United Kingdom: Interim results from an observational real-world studyAbstract Number: 110Presenting Author: Simon Jones, Manchester Centre for Genomic Medicine Date/Time: Thursday, February 11, 2021, 2:30 3:30 p.m. ET

Quality of life of patients with metachromatic leukodystrophy and their caregivers in the US, UK, Germany and FranceAbstract Number: 186Presenting Author: Francis Pang, Orchard TherapeuticsDate/Time: Thursday, February 11, 2021, 2:30 3:30 p.m. ET

Health-related quality of life in metachromatic leukodystrophy based on a societal utility study in the UKAbstract Number: 187Presenting Author: Francis Pang, Orchard TherapeuticsDate/Time: Thursday, February 11, 2021, 2:30 3:30 p.m. ET

Newborn screening for metachromatic leukodystrophy in Northern Germany - a prospective studyAbstract Number: 269Presenting Author: Thomas Wiesinger, ARCHIMEDlifeDate/Time: Thursday, February 11, 2021, 2:30 3:30 p.m. ET

About Libmeldy / OTL-200Libmeldy (autologous CD34+ cell enriched population that contains hematopoietic stem and progenitor cells (HSPC) transduced ex vivo using a lentiviral vector encoding the human arylsulfatase-A (ARSA) gene), also known as OTL-200, has been approved by the European Commission for the treatment of MLD in eligible early-onset patients characterized by biallelic mutations in the ARSA gene leading to a reduction of the ARSA enzymatic activity in children with i) late infantile or early juvenile forms, without clinical manifestations of the disease, or ii) the early juvenile form, with early clinical manifestations of the disease, who still have the ability to walk independently and before the onset of cognitive decline. Libmeldy is the first therapy approved for eligible patients with early-onset MLD.

The most common adverse reaction attributed to treatment with Libmeldy was the occurrence of anti-ARSA antibodies. In addition to the risks associated with the gene therapy, treatment with Libmeldy is preceded by other medical interventions, namely bone marrow harvest or peripheral blood mobilization and apheresis, followed by myeloablative conditioning, which carry their own risks. During the clinical studies, the safety profiles of these interventions were consistent with their known safety and tolerability.

For more information about Libmeldy, please see the Summary of Product Characteristics (SmPC) available on the EMA website.

Libmeldy is not approved outside of the European Union, UK, Iceland, Liechtenstein and Norway. OTL-200 is an investigational therapy in the US.

Libmeldy was developed in partnership with the San Raffaele-Telethon Institute for Gene Therapy (SR-Tiget) in Milan, Italy.

About OrchardOrchard Therapeutics is a global gene therapy leader dedicated to transforming the lives of people affected by rare diseases through the development of innovative, potentially curative gene therapies. Our ex vivo autologous gene therapy approach harnesses the power of genetically modified blood stem cells and seeks to correct the underlying cause of disease in a single administration. In 2018, Orchard acquired GSKs rare disease gene therapy portfolio, which originated from a pioneering collaboration between GSK and theSan Raffaele Telethon Institute for Gene Therapy in Milan, Italy. Orchard now has one of the deepest and most advanced gene therapy product candidate pipelines in the industry spanning multiple therapeutic areas where the disease burden on children, families and caregivers is immense and current treatment options are limited or do not exist.

Orchard has its global headquarters in London and U.S. headquarters in Boston. For more information, please visit http://www.orchard-tx.com, and follow us on Twitter and LinkedIn.

Availability of Other Information About OrchardInvestors and others should note that Orchard communicates with its investors and the public using the company website (www.orchard-tx.com), the investor relations website (ir.orchard-tx.com), and on social media (Twitter andLinkedIn), including but not limited to investor presentations and investor fact sheets,U.S. Securities and Exchange Commissionfilings, press releases, public conference calls and webcasts. The information that Orchard posts on these channels and websites could be deemed to be material information. As a result, Orchard encourages investors, the media, and others interested in Orchard to review the information that is posted on these channels, including the investor relations website, on a regular basis. This list of channels may be updated from time to time on Orchards investor relations website and may include additional social media channels. The contents of Orchards website or these channels, or any other website that may be accessed from its website or these channels, shall not be deemed incorporated by reference in any filing under the Securities Act of 1933.

Forward-Looking StatementsThis press release contains certain forward-looking statements about Orchards strategy, future plans and prospects, which are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Forward-looking statements include express or implied statements relating to, among other things, Orchards business strategy and goals, and the therapeutic potential of Orchards product candidates, including the product candidate or candidates referred to in this release. These statements are neither promises nor guarantees and are subject to a variety of risks and uncertainties, many of which are beyond Orchards control, which could cause actual results to differ materially from those contemplated in these forward-looking statements. In particular, these risks and uncertainties include, without limitation: the risk that prior results, such as signals of safety, activity or durability of effect, observed from preclinical studies or clinical trials will not be replicated or will not continue in ongoing or future studies or trials involving Orchards product candidates, will be insufficient to support regulatory submissions or marketing approval in the US or EU, as applicable, or that long-term adverse safety findings may be discovered; the risk that any one or more of Orchards product candidates, including the product candidates referred to in this release, will not be approved, successfully developed or commercialized; the risk of cessation or delay of any of Orchards ongoing or planned clinical trials; the risk that Orchard may not successfully recruit or enroll a sufficient number of patients for its clinical trials; the delay of any of Orchards regulatory submissions; the failure to obtain marketing approval from the applicable regulatory authorities for any of Orchards product candidates or the receipt of restricted marketing approvals; the inability or risk of delays in Orchards ability to commercialize its product candidates, if approved, or Libmeldy in the EU; the risk that the market opportunity for Libmeldy, or any of Orchards product candidates, may be lower than estimated; and the severity of the impact of the COVID-19 pandemic on Orchards business, including on clinical development, its supply chain and commercial programs. Given these uncertainties, the reader is advised not to place any undue reliance on such forward-looking statements.

Other risks and uncertainties faced by Orchard include those identified under the heading "Risk Factors" in Orchards quarterly report on Form 10-Q for the quarter endedSeptember 30, 2020, as filed with theU.S. Securities and Exchange Commission(SEC), as well as subsequent filings and reports filed with theSEC. The forward-looking statements contained in this press release reflect Orchards views as of the date hereof, and Orchard does not assume and specifically disclaims any obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as may be required by law.

Contacts

InvestorsRenee LeckDirector, Investor Relations+1 862-242-0764Renee.Leck@orchard-tx.com

MediaChristine HarrisonVice President, Corporate Affairs+1 202-415-0137media@orchard-tx.com

Read more:

Orchard Therapeutics Outlines Comprehensive Presence at 2021 WORLDSymposium - GlobeNewswire