Orchard Therapeutics Announces Presentation of Clinical Proof-of-Concept for OTL-300 for the Treatment of Transfusion-Dependent Beta-Thalassemia at the 22nd American Society of Gene & Cell Therapy Annual Meeting
The primary endpoint of transfusion reduction was achieved after one year of follow-up in eight out of nine TDT patients treated with OTL-300. All nine patients met the safety endpoints with no adverse events related to the therapy.
“We are pleased OTL-300 has shown clinical benefit in severe transfusion-dependent beta-thalassemia and has the potential to be a part of a new wave of treatment options for these patients,” said
The proof-of-concept study utilized a lentiviral vector containing the human beta-globin gene (GLOBE) and an adapted conditioning regimen. The study also included pediatric patients and patients with a spectrum of TDT genotypes, including the most severe genotype, β0/β0, and patients with notably high pre-treatment transfusion requirements.
Two additional abstracts from Orchard’s clinical and preclinical pipeline were also accepted for presentation at ASGCT. All three accepted abstracts will be published online on the ASGCT website later today.
Presentation details for OTL-300:
Title: Gene Therapy for the Treatment of Adult and Pediatric Patients Affected by Transfusion Dependent Beta-Thalassemia
Session: Clinical Gene Therapies for Blood Diseases
Abstract number: 49
Beta-thalassemia is a genetic blood disorder caused by a mutation in the beta-globin gene, a fundamental protein required for red blood cells to work correctly. Over 300 mutations in the beta-globin gene are known, which give rise to many different forms of beta-thalassemia, with variable severity. The most damaging mutations cause the almost complete absence of the protein in a patient’s blood, causing them to rely on frequent blood transfusions to survive or a bone marrow transplant from a compatible donor. OTL-300 is an ex vivo, autologous, hematopoietic stem cell-based gene therapy developed for the treatment of TDT that Orchard acquired from GSK in
Orchard’s portfolio of autologous, ex vivo, hematopoietic stem cell gene therapies includes Strimvelis, the first such treatment approved by the
Orchard currently has offices in the U.K. and the U.S., including
This press release contains certain forward-looking statements which are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Such forward-looking statements may be identified by words such as “anticipates,” “believes,” “expects,” “intends,” “projects,” “anticipates,” and “future” or similar expressions that are intended to identify forward-looking statements. Forward-looking statements include express or implied statements relating to, among other things, the achievement of proof of concept for OTL-300 and the safety and efficacy of this investigational therapy, as well as statements concerning the therapeutic potential of its product candidates generally. These statements are neither promises nor guarantees, but are subject to a variety of risks and uncertainties, many of which are beyond Orchard’s control, which could cause actual results to differ materially from those contemplated in these forward-looking statements. In particular, the risks and uncertainties include, without limitation: the risk that any one or more of Orchard’s product candidates, including OTL-300, will not be successfully developed or commercialized, the risk of cessation or delay of any of Orchard’s ongoing or planned clinical trials, 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 Orchard’s product candidates, and the risk ofdelays in Orchard’s ability to commercialize its product candidates, if approved. Orchard undertakes no 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. For additional disclosure regarding these and other risks faced by Orchard, see the disclosure contained in Orchard’s public filings with the
Source: Orchard Therapeutics Limited