More than 4,000 Albertans forced to flee fires, critical infrastructure believed destroyed in northern Alberta
At least two-dozen structures are believed to have been destroyed by wildfire in northern Alberta, the chief of one of the evacuated communities says.
Chief Andy Alook of Bigstone Cree Nation, which sits more than 300 kilometres north of Edmonton, announced the news to his members in a video posted to social media on Sunday.
'Based on pictures shared by the firefighters that were in the community, we believe we have lost 27 structures, including the senior centre, the water treatment plant, the church and the Bigstone Health Centre,' he said.
Alook said the information was based on the final assessment done by firefighters before they left the area on Thursday.
Wildfire breached Chipewyan Lake around 8 p.m., just three hours after the community was evacuated.
'Please keep in mind this is not a boots-on-the-ground assessment yet, an aerial assessment team was in Chipewyan Lake and will have a preliminary report along with photos for us [Monday.]'
Alook added fire was so intense it destroyed fire protection hoses and equipment.
Chipewyan Lake is part of the Slave Lake forest area, which contains nearly half of the out-of-control wildfires in Alberta.
Several of the communities in the area have been evacuated, and the province says wildfire damage remains high.
Rain over the weekend wasn't enough to help and warm temperatures are expected to evaporate any surface moisture quickly.
Yellowhead County evacuations
Closer to Edmonton, residents in three communities in Yellowhead County will be able to return home on Tuesday starting at noon.
Wade Williams, the county's mayor, says firefighters managed to stop a fire burning near the hamlet of Peers at the railroad tracks at the edge of the hamlet.
'I don't know if people realize how close we came to losing the entire hamlet of Peers, but had the system we had in place not been in place, that hamlet was in huge trouble,' Williams said.
Residents of Peers, as well as Robb and Mercoal, are being told to expect to see firefighting equipment still in the area when they return home later this week.
'We are not out of this as of yet, but we have some breathing room for the moment. Crews will continue working these active fires for days to come, until they are completely out.
'The fire hazard is high and the potential for new starts is high. Everyone in the county should have an evacuation plan,' Williams said.
Swan Hills fire
Meanwhile, residents of Swan Lake, Alta., can now apply for emergency evacuation payments from the province.
The wildfire threatening the town is still burning out of control and firefighters are working to protect structures in the community.
Additional firefighting resources from Yukon and the United States are on route to help fight the fire.
The province says as of Monday, about 4,625 Albertans have been forced out of their homes due to wildfires.
With files from CTV News Edmonton's Nicole Lampa
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Genentech and Roche Present New Insights in Alzheimer's Disease Research Across Its Diagnostics and Pharmaceutical Portfolios at AAIC
Article content – Trontinemab's Phase Ib/IIa Brainshuttle™ AD study continues to show rapid and robust clearance of amyloid plaques, with 91% becoming amyloid PET negative and ARIA-E remaining <5% – Article content – Design of the Phase III TRONTIER 1 and 2 studies of trontinemab in early symptomatic Alzheimer's disease featured, with initiation planned in 2025 – Article content Article content – Plans for new Phase III trial investigating trontinemab in preclinical Alzheimer's disease, in people at high risk of cognitive decline – Article content – New real-world data support Elecsys pTau217 as a standalone blood test, comparable to a PET scan, for rule-in and rule-out identification of amyloid pathology – Article content SOUTH SAN FRANCISCO, Calif. — Genentech, a member of the Roche Group (SIX: RO, ROG; OTCQX: RHHBY) announced today that new data from its Alzheimer's development portfolio is being presented at the Alzheimer's Association International Conference (AAIC) in Toronto, Canada (July 27-30). These data exemplify the comprehensive approach Roche is taking in addressing Alzheimer's across the entire patient journey. Article content Featured oral presentations include the latest results from the ongoing Phase Ib/IIa Brainshuttle™ AD study, which continue to support rapid and robust reduction of amyloid plaques, and design of the Phase III TRONTIER 1 and 2 studies of investigational trontinemab for early symptomatic Alzheimer's disease, with initiation planned later this year. As part of its growing Alzheimer's development program, Roche announced today its plans for an additional Phase III trial to investigate trontinemab in preclinical Alzheimer's disease. The trial will focus on individuals at risk of cognitive decline, with the goal of potentially delaying or preventing the progression of the disease to symptomatic stages. Article content 'Alzheimer's disease represents one of the greatest challenges in healthcare today and tackling it requires early detection and effective therapeutics,' said Levi Garraway, M.D., Ph.D., chief medical officer and head of Global Product Development. 'Trontinemab is designed to target a key driver of Alzheimer's disease biology more effectively in the brain. Combining new treatment avenues with advanced diagnostics may enable earlier and potentially more effective intervention. With plans for Phase III trials in both early symptomatic and preclinical Alzheimer's disease, we are advancing science with the goal of delaying—and ultimately preventing—progression of this devastating condition.' Article content Late-breaking oral and poster presentations highlight the potential of Roche's Elecsys ® pTau217 as a reliable and accessible blood-based biomarker test, providing comparable results to PET scan and cerebrospinal fluid (CSF) diagnostics for rule-in and rule-out diagnosis of amyloid pathology, a hallmark of Alzheimer's disease, across care settings. The test, which received Breakthrough Device Designation from the U.S. Food and Drug Administration last year, will also be utilized in Roche's TRONTIER studies. Article content 'Blood based testing for Alzheimer's disease has the potential to greatly improve patient access and decrease the time to definitive disease diagnosis,' said Matt Sause, CEO of Roche Diagnostics. 'Our data show that the Elecsys pTau217 test performs comparably to PET scans but can be performed with a simple blood draw and analyzed in a routine clinical laboratory. This has the potential to transform the diagnosis of Alzheimer's and provide clear answers to caregivers, patients, and their families.' Article content Up to 75% of people living with symptoms of Alzheimer's disease globally have not been diagnosed, and those who have, waited an average of 2.8 years, and even less have received any form of treatment. Diagnostics play a crucial role in addressing the global challenge of Alzheimer's, not only to detect and identify people with the disease early, even before the first symptoms, but also to rule out those who may or may not benefit from specific treatments. Article content Pharmaceuticals Article content In a 90-minute Featured Research session, designs were shared for the Phase III studies, TRONTIER 1 and 2, which will initiate later this year, investigating the efficacy and safety of investigational trontinemab in people with early Alzheimer's disease. The primary endpoint will measure the change in cognition and function based on the Clinical Dementia Rating – Sum of Boxes scale after 18 months of treatment. Secondary endpoints will include assessments of cognition, function, behavioral symptoms, and quality of life. A pre-screening study, TRAVELLER, based on a brief clinical assessment and a plasma biomarker, which will be identified using the Elecsys pTau217 test, has also been initiated, to enable broader community outreach and extend access to these trials to more diverse populations representative of Alzheimer's disease. Article content New data on the latest results for trontinemab from the completed dose-expansion part of the 1.8 mg/kg and 3.6 mg/kg cohorts from the ongoing Phase Ib/IIa Brainshuttle AD study continued to show rapid and robust reduction of amyloid plaques in the brain as measured by amyloid positron emission tomography (PET). In the 3.6 mg/kg cohort, trontinemab reduced amyloid levels below the 24 centiloid positivity threshold in 91% of participants (n=49/54) after 28 weeks of treatment; 72% (n=39/54) achieved deep clearance below 11 centiloids. Article content These data were reinforced by early and significant reductions in fluid biomarkers of Alzheimer's disease, including total tau, phosphorylated Tau (pTau)181, pTau217, and neurogranin measured in CSF and continues to show a favourable safety and tolerability profile. Amyloid-related imaging abnormalities-edema/effusion (ARIA-E) continued to be observed in <5% of participants (blinded data; N=4/149 across 1.8 and 3.6 mg/kg dose cohorts). All cases were radiographically mild, one was associated with mild and transient symptoms. Article content Diagnostics Article content Roche will present data on a new study comparing the pTau217/Ab42 plasma ratio to the high-throughput, fully automated Elecsys pTau217 assay. The presentation will report on the accuracy of these tools in detecting amyloid pathology. Together with the high throughput and full automation of the assay, these data will assess the potential of Elecsys pTau217 as an accurate standalone rule-in and rule-out test that could be scaled up for broad implementation in routine clinical practice worldwide. Article content Additionally, results from a cohort-based model of healthcare utilization in the U.S. demonstrated that using the Elecsys ® pTau181 blood-based rule-out test in primary care scenarios improved diagnostic accuracy and reduced resource use compared with the current standard-of-care clinical, cognitive and imaging tests. If made available in primary care settings, the Roche Elecsys ® pTau181 blood test has the potential to reliably avoid the need for further confirmatory testing in nearly all people who receive a negative result. This will avoid the need for these people to undergo unnecessary testing using CSF or PET, which often come with long wait times and high cost, resulting in further delays to diagnosis and cost to healthcare systems. Article content Medicine Abstract title Presentation number (type) Presentation date (session) Time Abstracts will be available on the AAIC website. Pharmaceuticals Next wave of innovation in Alzheimer's disease therapeutics: The value of novel active transport mechanisms Featured Research Session (FRS), Talk 1 Room 718 27 July 2025, 2pm – 3:30pm EDT Cath Mummery, Roberto Villaseñor, Jens Niewoehner, Scarlett Barker, Luka Kulic Latest results from the dose-expansion part (Part 2) of the Brainshuttle™ AD study of trontinemab in people with Alzheimer's disease Featured Research Session (FRS), Talk 2 Room 718 27 July 2025, 2pm – 3:30pm EDT Luka Kulic, Fabien Alcaraz, Gregory Klein, Stephen Salloway, Carsten Hofmann, João A. Abrantes, Stella Yilmaz, Denise Sickert, Maddalena Marchesi, Jakub Wojtowicz, Andres Schneider, Ruth Croney, David Agnew, Silke Ahlers, Paul Delmar, Hanno Svoboda, Iris Wiesel Interim biomarker results for trontinemab, a novel Brainshuttle™ antibody in development for the treatment of Alzheimer's disease Featured Research Session (FRS), Talk 3 Room 718 27 July 2025, 2pm – 3:30pm EDT Gregory Klein, Gil Rabinovici, Henrik Zetterberg, Matteo Tonietto, Tobias Bittner, Daria Rukina, Fabien Alcaraz, Carsten Hofmann, Maddalena Marchesi, Jakub Wojtowicz, Ruth Croney, David Agnew, João A. Abrantes, Franziska Schaedeli Stark, Silke Ahlers, Paul Delmar, Hanno Svoboda, Iris Wiesel, Luka Kulic TRONTIER 1 and TRONTIER 2: Pivotal trials of trontinemab in early symptomatic Alzheimer's disease Featured Research Session (FRS), Talk 4 Room 718 27 July 2025, 2pm – 3:30pm EDT Janice Smith, Catherine Mummery, Jeffrey L. Cummings, Gil Rabinovici, Stephen Salloway, Reisa Sperling, Henrik Zetterberg, Angeliki Thanasopolou, Christopher Lane, Paul Delmar, Gregory Klein, Ruth Croney, Jakub Wojtowicz, Carsten Hofmann, Luka Kulic, Hideki Garren Diagnostics Evaluating the Impact on Diagnostic Performance and Healthcare Resource Utilization of Introducing a plasma rule-out test in the Alzheimer's Disease Diagnostic Pathway Poster #102729 27 July 2025, 7:30am – 4:15pm EDT Sophie Roth, Gustaf Ortsäter, Joana Amorim Freire Location tbc Evaluating the Clinical Performance of the Elecsys pTau217 Plasma Immunoassay to Detect Amyloid Pathology in a Routine Clinical Practice Cohort Poster #96679 28 July 2025, 7:30am – 4:15pm EDT Sayuri Hortsch, Niels Borlinghaus, Alexander Jethwa, David Caley, Annunziata Di Domenico, Craig Ritchie Clinical performance and effect of pre-analytical variation of plasma pTau217 alone versus the plasma pTau217/Aβ42 ratio for the identification of amyloid pathology Oral Developing Topics #108585 3-23-DEV Developing Topics on Tau Biomarkers 29 July 2025, 2:00pm – 3:30pm EDT Christopher M. Rank, Joana Amorim Freire, Alexander Jethwa, Annunziata Di Domenico, Christina Rabe, Marc Suárez-Calvet, Colin L. Masters, Tobias Bittner Accuracy of cerebrospinal fluid biomarker ratios to determine amyloid positron-emission tomography status: a diagnostic test accuracy meta-analysis Poster #100941 28 July 2025, 7:30am – 4:15pm EDT Pablo Martinez-Lage, Eino Solje, Julian G. Martins, Sraboni Sarkar Equity in diagnosis through adequate clinical trial design in diagnostic performance studies Poster #102804 30 July 2025, 7:30am – 4:15pm EDT Imke Kirste, David Caley, Clara Quijano Rubio, Margherita Carboni Investigating Differences in Patients Enrolled in a Clinical Study Based on Referral Type Poster #108110 30 July 2025, 7:30am – 4:15pm EDT Sophie Roth, Laura Schlieker, Sayuri Hortsch, Joana Amorim Freire, David Caley Article content About trontinemab Article content Trontinemab is an investigational Brainshuttle bispecific 2+1 amyloid-beta targeting monoclonal antibody specifically engineered for enhanced access to the brain to enable rapid reduction of amyloid in people with Alzheimer's disease. Trontinemab is designed for the efficient transport across the blood-brain barrier to target aggregated forms of amyloid beta and remove amyloid plaques in the brain. Article content The uniqueness of trontinemab is based on Roche's proprietary Brainshuttle technology combining an amyloid beta-binding antibody with a transferring receptor (TfR1) shuttle module. As a result, high central nervous system (CNS) exposure of trontinemab may be achieved at low doses, leading to a rapid and deep amyloid clearance. Due to its unique properties, trontinemab might unlock the full potential of disease-modifying monoclonal antibodies by effectively penetrating the brain and potentially leading to slowing of disease progression. Article content About Roche in Alzheimer's Disease Article content With more than two decades of scientific research in Alzheimer's disease, Roche is working towards a day when we can detect and treat the disease early, in order to slow down, stop or even prevent its progression to preserve what makes people who they are. Today, the company's Alzheimer's disease portfolio spans investigational medicines for different targets, types and stages of the disease, including trontinemab. On the diagnostics side, it also includes approved and investigational tools, including digital and blood-based tests and CSF assays, aiming to more effectively detect, diagnose and monitor the disease. Yet the global challenges of Alzheimer's disease go well beyond the capabilities of science, and making a meaningful impact requires collaboration both within the Alzheimer's community and outside of healthcare. Roche will continue to work together with numerous partners with the hope to transform millions of lives. Article content About Genentech in Neuroscience Article content Neuroscience is a major focus of research and development at Genentech. Our goal is to pursue groundbreaking science to develop new treatments that help improve the lives of people with chronic and potentially devastating diseases. Article content Genentech and Roche are investigating more than a dozen medicines for neurological disorders, including multiple sclerosis, spinal muscular atrophy, neuromyelitis optica spectrum disorder, Alzheimer's disease, Huntington's disease, Parkinson's disease and Duchenne muscular dystrophy. Together with our partners, we are committed to pushing the boundaries of scientific understanding to solve some of the most difficult challenges in neuroscience today. Article content Article content Article content Article content Article content
