Tauopathies

STOCKHOLM, Oct. 31, 2024 /PRNewswire/ -- BioArctic AB's (publ) (NASDAQ Stockholm: BIOA B) partner Eisai has presented the latest findings for lecanemab (Leqembi®) at the Clinical Trials on Alzheimer's Disease, CTAD, congress, held in Madrid, Spain, and virtually, October 29 to November 1. Three-year data show that lecanemab continues to give increased patient benefit for patients with early Alzheimer's disease, expanding approximately 1 point on CDR-SB compared to the ADNI[1]-population, with maintained safety profile. In addition, data show that 46% of patients who had low levels of brain amyloid at the start of treatment have improved or maintained cognition and function after three years of treatment. Highlights from the presentations at CTAD included: Benefits of continued treatment with lecanemab for people with early Alzheimer's disease Results from the open-label long-term extension study (OLE) following the core study of the lecanemab phase 3 Clarity AD study presented at AAIC in July, showed that the mean change from baseline in CDR-SB (global cognitive and functional scale) in the lecanemab treated group was -0.45 at 18 months compared to the placebo group. This had expanded to -0.95 compared to the ADNI-population at 36 months. The data also showed a 30% reduction in the risk of progressing to the next disease stage. Furthermore, the tau PET substudy of Clarity AD showed that with three years of continuous treatment with lecanemab, 59% of patients with no or low tau accumulation in the brain (no tau/low tau) at baseline showed improvement or no decline, and 51% showed improvement from baseline on the Clinical Dementia Rating-Sum of Boxes (CDR-SB) global cognitive and functional scale. Clarity AD data presented at CTAD expanded on these initial results to include additional measurements resulting from three years of continuous lecanemab treatment in patients with low levels of amyloid accumulation in the brain at baseline (less than 60 centiloids). These data show that 46% of patients improved or had no decline, and 33% showed improvement from baseline on the CDR-SB, with similar results for ADAS-Cog14 and on the ADCS MCI-ADL scales. These results – from no tau/low tau and low amyloid populations – suggest that earlier initiation of lecanemab treatment may have a positive impact on disease progression of early Alzheimer disease patients and may provide continued benefits to these patients over the long term. Safety matters No new safety findings were observed with continued lecanemab treatment over three years. Most Amyloid-related imaging abnormalities (ARIA) occurred in the first six months of treatment. After the first six months, ARIA rates were low and similar to ARIA rates on placebo. With regards to the incidence of ARIA by ApoE4 status during the continuous treatment, it was shown that the incidence was higher in ApoE4 homozygotes than in heterozygotes or non-carriers, but rates of new ARIA decreased after the completion of the 18 months core study as treatment continued, regardless of ApoE4 status. Alzheimer's disease continues to progress when treatment is stopped – continued treatment even after plaque clearance beneficial for patients Lecanemab continues to positively impact biomarkers over the course of treatment – Clinical data and biomarkers such as Aβ42/40 ratio, pTau181, pTau217 and GFAP suggests that AD does not stop progressing after plaque clearance. Data indicates that patients continue to benefit by remaining on treatment, potentially at a lower maintenance dose, which was shown to prevent reaccumulating of brain amyloid and worsening of plasma biomarkers. Population approved for treatment in Great Britain show greater effect and better safety data In a presentation of the Clarity AD data focused on the Alzheimer's disease population approved for treatment in Great Britain, ApoE4 heterozygotes or non-carriers, showed that the CDR-SB slowing of decline is greater at 33% compared to the 27% which was seen for the total study population. Simultaneously, the rate of the side effect ARIA-E was lower at 8.9% compared to 12.6% for the total population. Progress in the AHEAD 3-45 Study – patient enrollment completed AHEAD 3-45 is a four-year phase 3 clinical study for individuals with preclinical AD, meaning they are clinically unimpaired but have intermediate or elevated levels of amyloid in their brains. Based on the amount of amyloid accumulation in the brain as determined by amyloid PET, subjects were assigned to two (2) trials with different dose settings: the A3 trial (approximately 400 people), for those with intermediate levels of amyloid in the brain, and the A45 trial (approximately 1000 people), for those with increased amyloid levels in the brain. Screening with blood biomarker tests was important to improve eligibility for amyloid PET testing and reduced screening failure on amyloid PET from more than 70% to less than 30%. In particular, plasma p-tau217 was shown to correlate with amyloid PET, supporting its role as a useful blood biomarker to identify elevated amyloid in the brain. Enrollment for the AHEAD 3-45 study was completed in October 2024. "The long-term data for lecanemab which our partner Eisai has presented are impressive. It shows that the patient benefit of lecanemab continues to increase over time, which is exactly what is expected from a disease modifying treatment. In addition, the safety data reported from clinical practice in the US and Japan seems to be at least on par with phase 3 data," said Gunilla Osswald, CEO at BioArctic. "It is also encouraging to see the results of early Alzheimer disease patients from the low amyloid and no tau/low tau populations, with 46 to 59% showing improvement or no decline compared to baseline at 36 months. This suggest that earlier initiation of lecanemab treatment may have a positive impact on disease progression of early Alzheimer disease patients and could provide continued benefits to patients over the long term." Lecanemab is the result of a long-standing collaboration between BioArctic and Eisai, and the antibody was originally developed by BioArctic based on the work of Professor Lars Lannfelt and his discovery of the Arctic mutation in Alzheimer's disease. Eisai is responsible for the clinical development, applications for market approval and commercialization of lecanemab for Alzheimer's disease. BioArctic has the right to commercialize lecanemab in the Nordic region and pending European approval Eisai and BioArctic are preparing for a joint commercialization in the region. The information was released for public disclosure, through the agency of the contact person below, on October 31, 2024, at 08:30 a.m. CET. For further information, please contact: Oskar Bosson, VP Communications and IR E-mail: [email protected] Phone: +46 70 410 71 80 About lecanemab (Leqembi®) Lecanemab is the result of a strategic research alliance between BioArctic and Eisai. It is a humanized immunoglobulin gamma 1 (IgG1) monoclonal antibody directed against aggregated soluble (protofibril) and insoluble forms of amyloid-beta (Aβ). Lecanemab is approved in the U.S., Japan, China, South Korea, Hong Kong, Israel, UAE and Great Britain for the treatment of MCI due to AD and mild AD dementia. Lecanemab's approvals in these countries were primarily based on Phase 3 data from Eisai's global Clarity AD clinical trial, in which it met its primary endpoint and all key secondary endpoints with statistically significant results. The most common adverse events (>10%) in the lecanemab group were infusion reactions, ARIA-H (combined cerebral microhemorrhages, cerebral macrohemorrhages, and superficial siderosis), ARIA-E (edema/effusion), headache, and fall. Lecanemab marketed in the U.S., Japan and China. Eisai has also submitted applications for approval of lecanemab in 10 countries and regions, including the European Union. Since July 2020 Eisai's Phase 3 clinical study (AHEAD 3-45) for individuals with preclinical AD, meaning they are clinically normal and have intermediate or elevated levels of amyloid in their brains, is ongoing. AHEAD 3-45 is conducted as a public-private partnership between the Alzheimer's Clinical Trial Consortium that provides the infrastructure for academic clinical trials in AD and related dementias in the U.S, funded by the National Institute on Aging, part of the National Institutes of Health and Eisai. Since January 2022, the Tau NexGen clinical study for Dominantly Inherited AD (DIAD), that is conducted by Dominantly Inherited Alzheimer Network Trials Unit (DIAN-TU), led by Washington University School of Medicine in St. Louis, is ongoing and includes lecanemab as the backbone anti-amyloid therapy. About the collaboration between BioArctic and Eisai Since 2005, BioArctic has a long-term collaboration with Eisai regarding the development and commercialization of drugs for the treatment of Alzheimer's disease. The most important agreements are the Development and Commercialization Agreement for the lecanemab antibody, which was signed 2007, and the Development and Commercialization agreement for the antibody Leqembi back-up for Alzheimer's disease, which was signed 2015. In 2014, Eisai and Biogen entered into a joint development and commercialization agreement for lecanemab. Eisai is responsible for the clinical development, application for market approval and commercialization of the products for Alzheimer's disease. BioArctic has the right to commercialize lecanemab in the Nordic region under certain conditions and is currently preparing for commercialization in the Nordics together with Eisai. BioArctic has no development costs for lecanemab in Alzheimer's disease and is entitled to payments in connection with regulatory approvals, and sales milestones as well as royalties on global sales. About BioArctic AB BioArctic AB (publ) is a Swedish research-based biopharma company focusing on innovative treatments that can delay or stop the progression of neurodegenerative diseases. The company invented Leqembi® (lecanemab) – the world's first drug proven to slow the progression of the disease and reduce cognitive impairment in early Alzheimer's disease. Leqembi has been developed together with BioArctic's partner Eisai, who are responsible for regulatory interactions and commercialization globally. In addition to Leqembi, BioArctic has a broad research portfolio with antibodies against Parkinson's disease and ALS as well as additional projects against Alzheimer's disease. Several of the projects utilize the company's proprietary BrainTransporter™ technology, which has the potential to actively transport antibodies across the blood-brain barrier to enhance the efficacy of the treatment. BioArctic's B share (BIOA B) is listed on Nasdaq Stockholm Large Cap. For further information, please visit . [1] ADNI is a clinical research project launched in 2005 to develop methods to predict the onset of AD and to confirm the effectiveness of treatments. The ADNI observational cohort represents the exact population of those in Clarity AD study; matched ADNI participants show similar degree of decline to placebo group out to 18 months This information was brought to you by Cision The following files are available for download: WANT YOUR COMPANY'S NEWS FEATURED ON PRNEWSWIRE.COM? 440k+ Newsrooms & Influencers 9k+ Digital Media Outlets 270k+ Journalists Opted In GET STARTED

-- Zero shingles cases after 18.8 months follow-up in 619 patients receiving any dose of amezosvatein, a development-stage adjuvanted subunit vaccine -- Ten shingles cases would have been expected absent vaccination -- Updated data will be featured in an oral presentation at the World Vaccine Congress Barcelona, 31 October 2024, in Theatre 5 at 13:30 CEST SEATTLE, Oct. 31, 2024 (GLOBE NEWSWIRE) -- Curevo Vaccine (Curevo), a privately-held clinical-stage biotechnology company dedicated to developing varicella zoster virus (VZV) vaccines with improved tolerability and accessibility, today announced an upcoming oral presentation at the World Vaccine Congress currently underway in Barcelona of shingles case outcomes data from an 876-patient Phase 2 trial of amezosvatein (a non-mRNA, adjuvanted subunit vaccine also known as CRV-101) head-to-head versus Shingrix® in participants aged 50 years and older. There were zero confirmed cases of herpes zoster (shingles) in the amezosvatein arm of participants, regardless of dose, after mean follow-up of 18.8 months in this post-hoc analysis of the Phase 2 trial. Based on the shingles incidence rate from the placebo arm North American cohort of ZOSTER-006, a Phase 3 trial of Shingrix, 10 of the 876 participants in the Phase 2 trial should have been diagnosed with a confirmed shingles case absent effective vaccination.1 There were also no shingles cases in the Shingrix arm of this Phase 2 trial. “With the duration of follow-up in our Phase 2 trial now sufficient for comparison, we are excited to report zero shingles cases for amezosvatein,” said Dr. Guy De La Rosa, Curevo’s Chief Medical Officer. “These data provide outcomes-based confirmation of the non-inferiority immunogenicity data we reported earlier.” “These data support our efforts to bring a new shingles vaccine to global markets,” stated George Simeon, Curevo’s Chief Executive Officer. “Though somewhat unsurprising, given amezosvatein also showed non-inferior immunogenicity to Shingrix at day 84 in this trial, these longer-term data represent additional de-risking for the program.” About the Phase 2 trialThe Phase 2 trial (NCT05304351) enrolled 876 participants to receive either amezosvatein or Shingrix on an identical two-dose, two months apart schedule. 876 participants were randomized to receive one of four different amezosvatein doses or Shingrix. The mean follow-up of the 619 participants receiving amezosvatein was 18.8 months. Mean follow-up of the 257 participants who received Shingrix was 21.5 months. The co-primary endpoint of the Phase 2 trial was anti-gE antibody humoral immune responses one month after the second vaccine dose (Day 84). The randomized, observer-blind, and active-controlled trial was conducted at multiple centers in the USA. All suspected cases of shingles were confirmed by either PCR test or, if PCR testing was inconclusive or unavailable, by a blinded panel of shingles experts – a system similar to one used in multiple prior shingles vaccine pivotal studies. As presented earlier in the month at the IDWeek scientific conference, this co-primary immunogenicity endpoint was met in the highest amezosvatein dose studied (100 μg gE plus 15 μg SLA-SE) as participants’ immune responses to amezosvatein were non-inferior to participants’ immune responses to Shingrix. High-dose amezosvatein and Shingrix generated similar serum neutralizing antibodies to the varicella zoster virus (VZV) and T-cell responses specific for the gE antigen. Vaccines are studied for both safety and reactogenicity/tolerability. Data on the reactogenicity/tolerability of amezosvatein and Shingrix were collected via a participant diary filled out for the seven days after each injection. Participants were asked to grade the tolerability of each vaccine on a scale of Grade 1 to Grade 3. Grade 1 represents what are considered normal reactions to an active vaccine that do not interfere or prevent daily activity. Grade 2 represents reactogenicity events interfering with daily activities. Grade 3 represents reactogenicity events preventing daily activities. Amezosvatein and Shingrix demonstrated comparable safety in this Phase 2 trial. However, the highest dose of amezosvatein demonstrated a clinically-meaningful and statistically-significant improvement for Grade 2 and Grade 3 reactogenicity versus Shingrix. Just 7.3% of participants in the trial receiving the highest dose of amezosvatein reported a Grade 2 (interferes with daily activity) or Grade 3 (prevents daily activity) reactogenicity event compared to 33.3% of participants receiving Shingrix. This result was statistically significant (p<0.001 in a post hoc analysis unadjusted for multiple comparisons). Reactogenicity events were broken down between local reactions (injection site pain, redness, or swelling) and systemic reactions (fever, headache, fatigue, myalgia/muscle pain, chills). Just 3.6% of high-dose amezosvatein participants had a Grade 2 or Grade 3 local reactogenicity event compared to 25.3% of Shingrix participants. For systemic reactogenicity events, 5.5% of high-dose amezosvatein participants had a Grade 2 or Grade 3 event versus 19.1% for Shingrix. Both results were statistically significant (p=0.0002 and p=0.0139, respectively, in a post hoc analysis unadjusted for multiple comparisons). No Grade 3 reactogenicity events were reported for amezosvatein. About amezosvatein‘Amezosvatein’ is the assigned non-proprietary name for CRV-101, a non-mRNA adjuvanted subunit vaccine under investigation by Curevo. Like Shingrix, amezosvatein uses a subunit protein antigen called glycoprotein ‘E’ (gE). Targeting the gE antigen is proven to elicit a long-term, protective immune response to prevent shingles. Also like Shingrix, amezosvatein uses an adjuvant targeting the TLR4 pathway to boost the immune response to the gE antigen. Amezosvatein was engineered to have a best-in-class safety profile in addition to manufacturing advantages to improve vaccine accessibility. The SLA-SE adjuvant formulation was developed at Seattle-based Access to Advanced Health Institute (AAHI) and amezosvatein was licensed from the Mogam Institute for Biomedical Research, a research institute funded by South Korea’s GC Biopharma. About shinglesAlso called ‘herpes zoster’, shingles occurs when the varicella zoster virus causing childhood chickenpox re-emerges from sensory ganglion nervous system cells where the virus lies dormant after initial exposure. Virtually all adults have been exposed to the varicella zoster virus and around 30% will develop shingles at least once in their lifetime. The blistering skin rash accompanying shingles also causes severe pain, with both pain and rash lasting up to four weeks. Between 10-18% of those who get shingles develop post-herpetic neuralgia (PHN), a condition marked by debilitating nerve pain lasting over six months and often beyond one year. There is no approved treatment for PHN. Shingles may also affect the eyes, potentially causing loss of vision. Contracting shingles has also been linked with increased risk of heart attack, stroke, and dementia/Alzheimer’s disease. About CurevoCurevo is a privately held, clinical-stage biotechnology company based near Seattle dedicated to reducing the burden of infectious disease by developing vaccines with improved tolerability and accessibility. Curevo’s lead product is amezosvatein, a non-mRNA sub-unit vaccine to prevent shingles, a serious medical condition involving a painful, blistering skin rash where 10-18% of people also develop serious, long-lasting nerve pain. The current $4+ billion shingles vaccine market is characterized by accessibility issues and vaccine hesitancy/dose avoidance related to vaccine tolerability. Curevo is also developing a non-live, non-mRNA subunit chickenpox vaccine intended to reduce or eliminate barriers to immunizing immunocompromised children. For more information visit https://curevovaccine.com/. 1. Lal, et al. New England Journal of Medicine, May 2015. Shingrix® is a registered trademark of GlaxoSmithKline, PLC.

Includes initial funding of approximately $5 million, as well as the option for additional proceeds of approximately $5 millionNEW YORK, Oct. 30, 2024 (GLOBE NEWSWIRE) -- Tiziana Life Sciences, Ltd. (Nasdaq: TLSA) (“Tiziana” or the “Company”), a biotechnology company developing breakthrough immunomodulation therapies with its lead development candidate, intranasal foralumab, a fully human, anti-CD3 monoclonal antibody, today announced that it has entered into a securities purchase agreement for the purchase and sale of 5,263,158 common shares at a purchase price of $0.95 per share pursuant to a registered direct offering, resulting in gross proceeds of approximately $5 million, before deducting placement agent commissions and other offering expenses. The closing of the offering is expected to occur on or about November 1, 2024, subject to the satisfaction of customary closing conditions. In addition, the Company has issued the investor an option to acquire up to an additional 5,263,158 common shares at a price of $0.95 per share until the date that is 75 days from the date of the closing of the offering, resulting in additional gross proceeds of up to approximately $5 million, at the election of the investor. The Company intends to use the net proceeds from the offering towards (i) its Phase 2a clinical trial for the intranasal delivery of foralumab in patients with non-active secondary progressive multiple sclerosis, (ii) expediting the clinical development of foralumab in Alzheimer’s disease, (iii) developing foralumab for other indications, and (iv) for working capital and other general corporate purposes. Titan Partners Group, a division of American Capital Partners is acting as the sole placement agent for the offering. This offering is being made pursuant to an effective shelf registration statement on Form F-3 (File No. 333-252441) previously filed with the U.S. Securities and Exchange Commission (the “SEC”) and declared effective on March 3, 2022. The offering is made only by means of a prospectus supplement, which will be filed with the SEC and will be available on the SEC's website located at http://www.sec.gov. Electronic copies of the prospectus supplement may be obtained, when available, by contacting Titan Partners Group LLC, a division of American Capital Partners, LLC, 4 World Trade Center, 29th Floor, New York, NY 10007, by phone at (929) 833-1246 or by email at prospectus@titanpartnersgrp.com. This press release shall not constitute an offer to sell or the solicitation of an offer to buy nor shall there be any sale of these securities in any state or jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction. About Tiziana Life Sciences Tiziana Life Sciences is a clinical-stage biopharmaceutical company developing breakthrough therapies using transformational drug delivery technologies to enable alternative routes of immunotherapy. Tiziana’s innovative nasal approach has the potential to provide an improvement in efficacy as well as safety and tolerability compared to intravenous (IV) delivery. Tiziana’s lead candidate, intranasal foralumab, which is the only fully human anti-CD3 mAb currently in clinical development, has demonstrated a favorable safety profile and clinical response in patients in studies to date. Tiziana’s technology for alternative routes of immunotherapy has been patented with several applications pending and is expected to allow for broad pipeline applications. For more information about Tiziana Life Sciences and its innovative pipeline of therapies, please visit www.tizianalifesciences.com Forward-Looking Statements Certain statements made in this announcement are forward-looking statements. These forward-looking statements are not historical facts but rather are based on the Company's current expectations, estimates, and projections about its industry, its beliefs, and assumptions. Words such as 'anticipates,' 'expects,' 'intends,' 'plans,' 'believes,' 'seeks,' 'estimates,' and similar expressions are intended to identify forward-looking statements. These statements are not guarantees of future performance and are subject to known and unknown risks, uncertainties, and other factors, some of which are beyond the Company's control, are difficult to predict, and could cause actual results to differ materially from those expressed or forecasted in the forward-looking statements. The Company cautions security holders and prospective security holders not to place undue reliance on these forward-looking statements, which reflect the view of the Company only as of the date of this announcement. Actual results may differ materially from those indicated by such forward-looking statements as a result of various important factors, including: the uncertainties related to market conditions and other factors described more fully in the section entitled ‘Risk Factors’ in Tiziana’s Annual Report on Form 20-F for the year ended December 31, 2023, and other periodic reports filed with the Securities and Exchange Commission. The forward-looking statements made in this announcement relate only to events as of the date on which the statements are made. The Company will not undertake any obligation to release publicly any revisions or updates to these forward-looking statements to reflect events, circumstances, or unanticipated events occurring after the date of this announcement except as required by law or by any appropriate regulatory authority. For further inquiries: Tiziana Life Sciences LtdPaul Spencer, Business Development and Investor Relations+44 (0) 207 495 2379email: info@tizianalifesciences.com