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out of our own late-stage development and commercial capabilities. Importantly, this collaboration is designed to fully support AL001 and AL101’s development and to enable Alector to continue building a fully integrated company as we strive to address the high unmet medical need in patients suffering from neurodegenerative diseases. We are confident that GSK’s extensive experience launching ground-breaking medicines at the intersection of immunology and human genetics, will ensure that AL001 and AL101 are developed to their full potential.”
As part of the recent Investor Update day on 23 June 2021, GSK committed to an R&D approach focused on maximizing opportunities by leveraging an increased understanding of the science of the immune system and human genetics. The collaboration with Alector on AL001 and AL101, two antibodies designed to elevate PGRN levels and potentially slow the progression of FTD and other neurological disorders, provides GSK access to a promising clinical program in immuno-neurology.
Terms of the Collaboration
Under the terms of the collaboration agreement, Alector will receive $700 million in upfront payments. In addition, Alector will be eligible to receive up to an additional $1.5 billion in clinical development, regulatory and commercial launch-related milestone payments.
Alector will lead the global clinical development of AL001 and AL101 through Phase 2 proof-of-concept. Thereafter, Alector and GSK will share development responsibilities for all late-stage clinical studies for AL001 and AL101 and all costs for global development will be divided between the two companies.
The companies will be jointly responsible for commercialization in the U.S. and will share profits and losses. Alector will lead commercial efforts associated with AL001 in orphan indications and GSK will lead the commercialization of AL101 in Alzheimer’s and Parkinson’s disease. Outside the U.S., GSK will be responsible for commercialization of AL001 and AL101 and Alector will be eligible for tiered royalties.
The collaboration agreement is conditional upon customary conditions including review by the appropriate regulatory agencies under the Hart-Scott-Rodino Act.
About the Progranulin-Elevating Monoclonal Antibodies - AL001 and AL101
Decreased levels of PGRN, a key regulator of immune response, lysosomal function, and neuronal survival in the brain, are genetically linked to many neurodegenerative disorders. AL001 and AL101 are novel human monoclonal antibodies that elevate levels of progranulin by blocking the sortilin receptor responsible for progranulin degradation. AL001 is currently in a pivotal Phase 3 clinical study in people at risk for or with frontotemporal dementia due to a progranulin gene mutation (FTD-GRN). AL001 is also currently in a Phase 2 study in symptomatic FTD patients with a C9orf72 mutation, with another Phase 2 study in patients with ALS planned to begin in the second half of 2021. AL101, is designed to treat people suffering from more prevalent neurodegenerative diseases and is currently in a Phase 1a study in healthy volunteers. AL101 is intended to be developed for treatment of Parkinson’s disease and Alzheimer’s disease.
About Frontotemporal Dementia (FTD)
Frontotemporal dementia is a rapidly progressing and severe form of dementia. It affects 50,000 to 60,000 people in the United States and roughly 110,000 in the European Union, with potentially higher prevalence in Asia and Latin America. There are currently no FDA-approved treatment options for FTD.
There are multiple heritable forms of FTD. In one form, FTD-GRN, people have a mutation in the progranulin gene. This population represents 5% to 10% of all people with FTD. Mutations in a single copy of a progranulin gene leads to a 50% or greater decrease in the level of progranulin protein and invariably leads to development of FTD. In another form, people with mutations in the chromosome 9 open reading frame 72 (C9orf72) gene can develop FTD. FTD-C9orf72 is associated with abnormal accumulation of the protein TDP-43, which is also a hallmark in FTD-GRN. To date researchers have identified more than 120 inherited loss of function mutations in the progranulin gene that lead to FTD.
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