Acelyrin, Inc., a clinical biopharma company, focuses on identifying, acquiring, and accelerating the development and commercialization of transformative medicines. The company's lead product candidate is izokibep, a small protein therapeutic designed to inhibit IL-17A with high potency, which is in Phase 3 clinical trials for use in the treatment of Hidradenitis Suppurativa, Psoriatic Arthritis, and uveitis, as well as in Phase 2 clinical trials for use in the treatment of Axial Spondyloarthritis. It is also developing lonigutamab, a humanized immunoglobulin G1 (IgG1) monoclonal antibody which is in Phase 1 clinical trials for use in the treatment of thyroid eye disease. In addition, the company's develops SLRN-517, a fully human IgG1 monoclonal antibody targeting c-KIT, which is in preclinical stage for use in the treatment of chronic urticaria. Acelyrin, Inc. was incorporated in 2020 and is headquartered in Agoura Hills, California.

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.

Kyverna Therapeutics, Inc., a clinical-stage biopharmaceutical company, focuses on developing cell therapies for patients suffering from autoimmune diseases. Its lead product candidate is KYV-101, an autologous CD19 CAR T-cell product candidate for the treatment of patients with lupus nephritis and systemic sclerosis that is in Phase I clinical trial; and for myasthenia gravis and multiple sclerosis that is in Phase II clinical trial. The company is also developing KYV-201, an allogeneic CD19 CAR T-cell product candidate that is in preclinical stage to treat multiple autoimmune diseases. In addition, it is developing product candidates to treat other autoimmune diseases, such as inflammatory bowel disease that includes Crohn's disease and ulcerative colitis. Kyverna Therapeutics, Inc. has a license and collaboration agreement with Intellia Therapeutics, Inc. to research and develop an allogeneic CD19-directed CAR cell therapy product; and with Kite to research and develop programs for the treatment, diagnosis, and prevention of autoimmune, inflammatory, and allogeneic stem cell transplant inflammatory diseases. The company was formerly known as BAIT Therapeutics, Inc. and changed its name to Kyverna Therapeutics, Inc. in October 2019. Kyverna Therapeutics, Inc. was incorporated in 2018 and is headquartered in Emeryville, California.

Avalo Therapeutics, Inc., a clinical stage biotechnology company, focuses on the development of therapies for the treatment of immune dysregulation in the Unites States. The company's drug candidates include AVTX-009, an Anti-IL-1ß monoclonal antibody which is under Phase I targeting inflammatory diseases; and AVTX-008, a fully human B and T lymphocyte attenuator agonist fusion protein for the treatment of immune dysregulation disorders. It also develops Quisovalimab (AVTX-002), an Anti-LIGHT mAb which is in phase II for immune-inflammatory diseases. The company was formerly known as Cerecor Inc. and changed its name to Avalo Therapeutics, Inc. in August 2021. Avalo Therapeutics, Inc. was incorporated in 2011 and is headquartered in Rockville, Maryland.

Quince Therapeutics, Inc., a biopharmaceutical company, focuses on acquiring, developing, and commercializing therapeutics for patients with debilitating and rare diseases. The company's lead asset candidature comprises EryDex for the treatment of rare pediatric neurodegenerative disease, including A-T, an inherited autosomal recessive neurodegenerative and immunodeficiency disorder caused by mutations in ATM gene. Its AIDE technology platform, a drug/device combination platform that uses an automated process to encapsulate a drug into a patient's own red blood cells, as well as consists of an automated equipment the RCL, a sterile single-use consumable treatment kit comprising EryKit, Syringe Kit, drugs, and process solutions. The company was formerly known as Cortexyme, Inc. and changed its name to Quince Therapeutics, Inc. in August 2022. Quince Therapeutics, Inc. was incorporated in 2012 and is headquartered in South San Francisco, California.

Allakos Inc., a clinical stage biotechnology company, develops therapeutics that target immunomodulatory receptors present on immune effector cells in allergy, inflammatory, and proliferative diseases in the United States. The company's lead product candidate is AK006, which in a Phase I clinical trial for the treatment of chronic spontaneous urticaria (CSU) and other indications. The company was incorporated in 2012 and is headquartered in San Carlos, California.

Equillium, Inc., a clinical-stage biotechnology company, develops and sells products to treat severe autoimmune and inflammatory, or immuno-inflammatory disorders with unmet medical need. The company's lead product candidate is itolizumab (EQ001), a first-in-class monoclonal antibody that targets the immune checkpoint receptor CD6, which is in Phase III clinical trials for the treatment of acute graft-versus-host disease; completed Phase I clinical trial for the treatment of ulcerative colitis; and Phase I clinical trial for the treatment of lupus nephritis. It also develops EQ101 completed phase 1/2 for treatment of cutaneous T cell lymphoma and alopecia areata; and EQ302 to treat gastrointestinal indications. In addition, it serves dermatology, gastroenterology, rheumatology, hematology, transplant science, oncology, and pulmonology area. Equillium, Inc. has a research collaboration agreement with Vivtex Corporation to develop GI-targeted formulations for Bi-specific peptide therapy. The company was formerly known as Attenuate Biopharmaceuticals, Inc. and changed its name to Equillium, Inc. in May 2017. Equillium, Inc. was incorporated in 2017 and is headquartered in La Jolla, California.

Alpine Immune Sciences, Inc. operates as a clinical-stage biopharmaceutical company. It focuses on the discovery and development of immunotherapies through protein engineering technologies for treating autoimmune and inflammatory diseases. The company's product pipeline includes Povetacicept, a dual B cell cytokine antagonist, which is in Phase 2 clinical trial for the treatment of multiple autoimmune and inflammatory diseases; and Acazicolcept, a dual inhibitor of the CD28 and ICOS T cell costimulatory pathways that is in preclinical trial for the treatment of systemic lupus erythematosus. It is also developing RUBY-3 that has completed Phase 1 clinical trial for the treatment of glomerulonephritis; and RUBY-4, which has completed Phase 1 clinical trial for the treatment of cytopenias. The company was incorporated in 2007 and is headquartered in Seattle, Washington.