Biogen Inc. discovers, develops, manufactures, and delivers therapies for treating neurological and neurodegenerative diseases in the United States, Europe, Germany, Asia, and internationally. The company provides TECFIDERA, VUMERITY, AVONEX, PLEGRIDY, TYSABRI, and FAMPYRA for multiple sclerosis (MS); SPINRAZA for spinal muscular atrophy; ADUHELM to treat Alzheimer's disease; FUMADERM to treat plaque psoriasis; BENEPALI, an etanercept biosimilar referencing ENBREL; IMRALDI, an adalimumab biosimilar referencing HUMIRA; FLIXABI, an infliximab biosimilar referencing REMICADE; and BYOOVIZ, a ranibizumab biosimilar referencing LUCENTIS. It offers RITUXAN for treating non-Hodgkin's lymphoma, chronic lymphocytic leukemia (CLL), rheumatoid arthritis, two forms of ANCA-associated vasculitis, and pemphigus vulgaris; RITUXAN HYCELA for non-Hodgkin's lymphoma and CLL; GAZYVA to treat CLL and follicular lymphoma; OCREVUS for relapsing MS and primary progressive MS; LUNSUMIO to treat relapsed or refractory follicular lymphoma; glofitamab for non-Hodgkin's lymphoma; and other anti-CD20 therapies. In addition, the company is developing various products for the treatment of MS, Alzheimer's disease and dementia, neuromuscular disorders, Parkinson's disease and movement disorders, neuropsychiatry, genetic neurodevelopmental disorders, and biosimilars, which are under various stages of development. It has collaboration and license agreements with Acorda Therapeutics, Inc.; Alkermes Pharma Ireland Limited; Denali Therapeutics Inc.; Eisai Co., Ltd.; Genentech, Inc.; Neurimmune SubOne AG; Ionis Pharmaceuticals, Inc.; Samsung Bioepis Co., Ltd.; Sangamo Therapeutics, Inc.; and Sage Therapeutics, Inc., as well as collaboration with Fujirebio to potentially identify and develop blood-based biomarkers for tau pathology in the brain. The company was founded in 1978 and is headquartered in Cambridge, Massachusetts.

BridgeBio Pharma, Inc., a commercial-stage biopharmaceutical company, discovers, creates, tests, and delivers transformative medicines to treat patients who suffer from genetic diseases and cancers. Its products in development programs include AG10, a next-generation oral small molecule near-complete TTR stabilizer that is in Phase 3 clinical trial for the treatment of TTR amyloidosis, or transthyretin amyloid cardiomyopathy (ATTR-CM); low-dose infigratinib, an oral FGFR1-3 selective tyrosine kinase inhibitor, which is in Phase 3 double-blinded, placebo-controlled pivotal study for the treatment option for children with achondroplasia; and BBP-631, an AAV5 gene transfer product candidate that is in Phase 1/2 clinical trial for the treatment of congenital adrenal hyperplasia, or CAH, driven by 21-hydroxylase deficiency, or 21OHD. The company also develops Encaleret, a small molecule antagonist of the calcium sensing receptor, or CaSR, which is in phase 3 clinical trial for treating autosomal dominant hypocalcemia type 1, or ADH1; and BBP-418, a glycosylation substrate pro-drug that is in Phase 3 clinical trial for treating limb-girdle muscular dystrophy type 2I/R9 (LGMD2I/R9). In addition, it engages in developing products for mendelian, oncology, and gene therapy diseases. BridgeBio Pharma, Inc. has license and collaboration agreements with the Leland Stanford Junior University; and Leidos Biomedical Research, Inc. The company was founded in 2015 and is headquartered in Palo Alto, California.

Ionis Pharmaceuticals, Inc. discovers and develops RNA-targeted therapeutics in the United States. The company offers SPINRAZA for spinal muscular atrophy (SMA) in pediatric and adult patients; TEGSEDI, an antisense injection for the treatment of polyneuropathy caused by hereditary transthyretin amyloidosis in adults; and WAYLIVRA, an antisense medicine for treatment for familial chylomicronemia syndrome (FCS) and familial partial lipodystrophy. It also develops medicines for various indications that are in phase 3 study, including Eplontersen as a monthly self-administered subcutaneous injection to treat all types of ATTR; Olezarsen for patients with FCS and severe hypertriglyceridemia (SHTG); Donidalorsen for patients with hereditary angioedema; ION363 for patients with amyotrophic lateral sclerosis; Tofersen to inhibit the production of superoxide dismutase 1; Pelacarsen for patients with established cardiovascular disease and elevated lipoprotein(a); and Bepirovirsen to inhibit the production of viral proteins associated with hepatitis B virus. In addition, the company develops IONIS-FB-LRx to inhibit the production of complement factor B and the alternative complement pathway; and ION224 to reduce the production of diacylglycerol acyltransferase 2. It has a strategic collaboration with Biogen for the treatment of neurological disorders; and collaboration and license agreement with Metagenomi, Inc, AstraZeneca, Bayer AG, GlaxoSmithKline plc, Novartis, Roche, Swedish Orphan Biovitrum AB, and PTC Therapeutics. The company was incorporated in 1989 and is based in Carlsbad, California.

Biohaven Ltd., together with its subsidiaries, focuses on discovering, developing, and commercializing therapies for immunology, neuroscience, and oncology worldwide. The company's pipeline products include Troriluzole, which is in Phase 3 clinical trial for the treatment of neurological and neuropsychiatric illnesses; BHV-5500 that blocks glutamate signaling mediated by post-synaptic NMDA receptors; Taldefgrobep Alfa, which is in Phase 3 clinical trial for the treatment of spinal muscular atrophy and obesity; BHV-7000, a candidate in Phase 2/3 clinical trials for the treatment of focal and generalized epilepsy, bipolar disorder, and major depressive disorder; BHV-2100 that is in Phase 1 clinical trials for the treatment of migraines and neuropathic pain; and BHV-8000, a product candidate in Phase 1 clinical trials for the treatment of early Alzheimer's and Parkinson's disease, sclerosis, and amyloid-related imaging abnormalities. It also offers BHV-1300, a product candidate in Phase 1 clinical trials to treat rheumatoid arthritis; BHV-1310 for the treatment of generalized myasthenia gravis and acute exacerbations or flares; BHV-1400 to treat IgA Nephropathy; and BHV-1600 for the treatment of dilated cardiomyopathy. In addition, the company develops BHV-1100, a product candidate in Phase 1a/1b clinical trials for multiple myeloma patients; BHV-1510, a preclinical product that targets carcinomas; and BHV-1500 for Hodgkin's lymphoma. It has license, development, and commercialization agreements with Yale University, AstraZeneca, University of Connecticut, Artizan Biosciences Inc., Reliant Glycosciences LLC, Katholieke Universiteit Leuven, BMS, and Highlightll Pharmaceutical Co. Ltd. The company was formerly known as Biohaven Research Ltd and changed its name to Biohaven Ltd. in September 2022. Biohaven Ltd. was incorporated in 2022 and is headquartered in New Haven, Connecticut. Biohaven Ltd. was formerly a subsidiary of Biohaven Pharmaceutical Holding Company Ltd.

Prothena Corporation plc, a late-stage clinical biotechnology company, focuses on discovery and development of novel therapies to treat diseases caused by protein dysregulation in the United States. The company is involved in developing birtamimab, an investigational humanized antibody that is in Phase III clinical trial for the treatment of AL amyloidosis; Prasinezumab, a humanized monoclonal antibody, for the treatment of Parkinson's disease and other related synucleinopathies which is in Phase IIb clinical trial; NNC6019 that is in Phase lI clinical trial for the treatment of ATTR amyloidosis; and BMS-986446 and PRX012, which is in Phase I clinical trial for the treatment of Alzheimer's disease. Its discovery and preclinical programs include PRX123, a dual Aß-Tau vaccine for the treatment and prevention of Alzheimer's disease; and PRX019 for the treatment of neurogenerative diseases, as well as TDP-43 for the treatment of amyotrophic lateral sclerosis. Prothena Corporation plc has a license, development, and commercialization agreement with F. Hoffmann-La Roche Ltd. and Hoffmann-La Roche Inc. to develop and commercialize antibodies that target a-synuclein, including prasinezumab; and a collaboration agreement with Bristol-Myers Squibb to develop and commercialize antibodies targeting tau, TDP-43. The company was incorporated in 2012 and is based in Dublin, Ireland.

Voyager Therapeutics, Inc., a biotechnology company, focuses on the treatment of gene therapy and neurology diseases. The company's lead clinical candidate is VY-TAU01, an anti-tau antibody program for the treatment of alzheimer's disease. Its product pipeline includes superoxide dismutase 1 silencing gene therapy, which is in preclinical trial for the treatment of amyotrophic lateral sclerosis; tau silencing gene therapy, which is in preclinical trial for the treatment of alzheimer's disease; and vectorized anti-amyloid antibody, a gene therapy targeting anti-amyloid for the treatment of alzheimer's disease and is in preclinical trial. In addition, the company develops VY-FXN01, which is in preclinical trial to treat friedreich's ataxia; and GBA1 gene replacement to treat parkinson's disease and is in preclinical trial. Further, it provides research program for the treatment of Huntington's disease. The company has collaboration and license agreements with Alexion; AstraZeneca Rare Disease; Novartis Pharma AG; Neurocrine Biosciences, Inc; and Sangamo Therapeutics, Inc. Voyager Therapeutics, Inc. was incorporated in 2013 and is headquartered in Lexington, Massachusetts.

AC Immune SA, a clinical stage biopharmaceutical company, discovers, designs, and develops medicines and diagnostic products for the prevention and treatment of neurodegenerative diseases associated with protein misfolding. The company's SupraAntigen and Morphomer platforms are designed to generate biologics and small molecules, which selectively interact with misfolded proteins that are common in a range of neurodegenerative diseases. It is developing Crenezumab, a humanized, conformation-specific monoclonal antibody used to slow Alzheimer's disease (AD) progression; and Semorinemab, an investigational monoclonal anti-Tau antibody that targets the N-terminal portion of the Tau protein and is designed to bind to Tau and slow its spread between neurons for the treatment of AD. The company is also developing ACI-24.060 for the treatment of down syndrome-related AD; ACI-7104.056, to treat Parkinson's disease; and ACI-35.030, designs to stimulate a patient's immune system to produce antibodies against pathological phosphorylated Tau. In addition, it is developing diagnostic programs, consisting of PI-2620, a Tau diagnostic for AD, as well as non-AD Tauopathies; and ACI-12589, a-sync PET tracer that supports the differential diagnosis of multiple system atrophy from other neurodegenerative disease. Further, the company is researching and developing Morphomer Tau aggregation inhibitors to evaluate candidates in AD and NeuroOrphan Tauopathies. Additionally, it has discovery and preclinical stage molecules targeting range of neurodegenerative diseases, which include diagnostics targeting TDP-43, alpha-synuclein, and NLRP3. The company has license agreements and collaborations with Genentech, Inc.; Janssen Pharmaceuticals, Inc.; Life Molecular Imaging SA; and Eli Lilly and Company. AC Immune SA was incorporated in 2003 and is headquartered in Lausanne, Switzerland.

Alector, Inc., a clinical stage biopharmaceutical company, develops therapies for the treatment of neurodegeneration diseases. Its products include AL001, an immune activity in the brain with genetic links to multiple neurodegenerative disorders, which is in Phase III clinical trial for the treatment of frontotemporal dementia, Alzheimer's, Parkinson's, and amyotrophic lateral sclerosis diseases; and AL101 that is in Phase I clinical trial for the treatment of neurodegenerative diseases, including Alzheimer's and Parkinson's diseases. The company also offers AL002, a product candidate that is in Phase II clinical trial for the treatment of Alzheimer's disease. Alector, Inc. has a collaboration agreement with Adimab, LLC for the research and development of antibodies; and a strategic collaboration agreement with GlaxoSmithKline plc for the development and commercialization of monoclonal antibodies, such as AL001 and AL101 to treat neurodegenerative diseases. The company was founded in 2013 and is headquartered in South San Francisco, California.