AnaptysBio, Inc., a clinical-stage biotechnology company, focuses in delivering immunology therapeutics. Its products include Rosnilimab, an IgG1 antibody that targets PD-1+ T cells, resulting in their agonism or depletion, broadly impacting pathogenic drivers of autoimmune and inflammatory diseases; and ANB032, a non-depleting antibody that binds to the BTLA checkpoint receptor and inhibits activated T cell proliferation; ANB033, a novel anti-CD122 antagonist antibody that targets the shared common beta subunit of the receptors for IL-15 and IL-2; ANB101, a BDCA2 modulator antibody that specifically targets plasmacytoid dendritic cells (pDCs); and Imsidolimab, an antibody that inhibits the interleukin-36 receptor, which is in the Phase 3 development for the treatment of generalized pustular psoriasis. The company also focuses on developing various antibody programs that are advanced to preclinical and clinical milestones under its collaborations. It has a collaboration and license agreement with GlaxoSmithKline, Inc. The company was formerly known as Anaptys Biosciences, Inc. and changed its name to AnaptysBio, Inc. in July 2006. AnaptysBio, Inc. was incorporated in 2005 and is based in San Diego, California.

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.

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.

Cabaletta Bio, Inc., a clinical-stage biotechnology company, focuses on the discovery and development of engineered T cell therapies for patients with B cell-mediated autoimmune diseases. The company's lead product candidate is CABA-201, a fully human anti-CD19 binder for the treatment of Phase 1/2 clinical trials in dermatomyositis, anti-synthetase syndrome, immune-mediated necrotizing myopathy, lupus nephritis, non-renal systemic lupus erythematosus, systemic sclerosis, and generalized myasthenia gravis. It also develops DSG3-CAART, which is in Phase I/II clinical trial for the treatment of mucosal pemphigus vulgaris; and MuSK-CAART, an investigational cell therapy that is in Phase I/II clinical trial for treating patients with anti- muscle-specific kinase antibody positive myasthenia gravis. It has a collaboration with the University of Pennsylvania and the Children's Hospital of Philadelphia; Nanjing IASO Biotherapeutics Co., Ltd; Oxford Biomedica; and WuXi Advanced Therapies, Inc. The company was formerly known as Tycho Therapeutics, Inc. and changed its name to Cabaletta Bio, Inc. in August 2018. Cabaletta Bio, Inc. was incorporated in 2017 and is headquartered in Philadelphia, Pennsylvania.

Artiva Biotherapeutics, Inc., a clinical-stage biotechnology company, focuses on developing natural killer (NK) cell-based therapies for patients suffering from autoimmune diseases and cancers. The company's lead product candidate is AB-101, an off-the-shelf NK cell therapy for patients with autoimmune diseases and cancers, such as lupus nephritis, rheumatoid arthritis, pemphigus vulgaris, the anti-neutrophil cytoplasmic antibody-associated vasculitis subtypes granulomatosis with polyangiitis/microscopic polyangiitis, systemic lupus erythematosus, and B-cell-non-Hodgkin lymphoma. It also develops AB-201, an allogeneic anti- human epidermal growth factor receptor 2 chimeric antigen receptor (CAR)-NK cell product candidate; and AB-205, an allogeneic anti-CD5 CAR-NK cell product candidate. The company was incorporated in 2019 and is headquartered in San Diego, California.

IGM Biosciences, Inc., a clinical-stage biotechnology company, develops Immunoglobulin M (IgM) antibodies for the treatment of cancer and autoimmune and inflammatory diseases. It develops Aplitabart, a Death Receptor 5 Agonist IgM antibody for the treatment of colorectal cancer; imvotamab, a CD20 x CD3 bispecific IgM antibody to treat myositis, as well as for the treatment of systemic lupus erythematosus and rheumatoid arthritis that is Phase Ib clinical trial; and IGM-2644, a bispecific T cell engaging IgM antibody targeting CD38 and CD3 proteins for the treatment of autoimmune diseases. IGM Biosciences, Inc. has a collaboration and license agreement with Genzyme Corporation to generate, develop, manufacture, and commercialize IgM antibodies. The company was formerly known as Palingen, Inc. and changed its name to IGM Biosciences, Inc. in 2010. IGM Biosciences, Inc. was incorporated in 1993 and is headquartered in Mountain View, California.

Connect Biopharma Holdings Limited, a clinical-stage biopharmaceutical company, engages in the development of therapies for the treatment of T cell-driven inflammatory diseases. The company is building a pipeline of small molecules and antibodies using functional T cell assays to screen and discover potent product candidates against validated immune targets. Its lead product candidate is rademikibart (formerly CBP-201), an antibody designed to target interleukin-4 receptor alpha, which is a validated target for the treatment of inflammatory diseases such as atopic dermatitis and asthma, currently under Phase 3 studies; and icanbelimod (formerly CBP-307), an oral small molecule Sphingosine 1-Phosphate Receptor 1 modulator, currently under Phase 2 clinical for the treatment of ulcerative colitis and Crohn's disease. The company was founded in 2012 and is based in San Diego, California.

Q32 Bio Inc., a clinical-stage biotechnology company, develops biologic therapeutics to restore healthy immune balance in patients with autoimmune and inflammatory diseases driven by pathological immune dysfunction in the United States. Its lead product candidate is ADX-097, a humanized anti-C3d monoclonal antibody fusion protein to restore complement regulation, which has completed Phase I clinical trial for the treatment of renal and other complement-mediated diseases of high unmet need, including lupus nephritis, immunoglobulin A nephropathy, complement component 3 glomerulopathy, and anti-neutrophil cytoplasmic antibody-associated vasculitis. The company is also developing Bempikibart (ADX-914), a fully human anti–interleukin-7 receptor alpha antagonist monoclonal antibody designed to re-regulate adaptive immune function by blocking signaling mediated by interleukin-7 and thymic stromal lymphopoietin that is Phase II clinical trial for the treatment of atopic dermatitis and alopecia areata. Q32 Bio Inc. was formerly known as AdMIRx Inc. and changed its name to Q32 Bio Inc. in April 2020. The company was founded in 2017 and is based in Waltham, Massachusetts.