Protagonist Therapeutics, Inc., a biopharmaceutical company, develops peptide-based drugs for hematology and blood disorders, and inflammatory and immunomodulatory diseases. It is developing Rusfertide (PTG-300), an injectable hepcidin mimetic that completed phase 2 clinical trials for the treatment of polycythemia vera and other blood disorders; and JNJ-2113, an orally delivered investigational drug to block biological pathways that completed phase 2b clinical trials for the treatment of moderate-to-severe plaque psoriasis; and PN-943, an orally delivered, gut-restricted alpha 4 beta 7 specific integrin antagonist completed a phase 2 clinical trials in patients with moderate to severe ulcerative colitis. The company has a license and collaboration agreement with Takeda to commercialize rusfertide; and JNJ Innovative Medicines to co-develop Interleukin-23 receptor antagonist compound JNJ-2113. Protagonist Therapeutics, Inc. was incorporated in 2006 and is headquartered in Newark, California.

Phathom Pharmaceuticals, Inc., biopharmaceutical company, focuses on developing and commercializing treatments for gastrointestinal diseases. The company has the rights in the United States, Europe, and Canada for an investigational potassium-competitive acid blocker (P-CAB) that blocks acid secretion in the stomach. It is also developing vonoprazan for the treatment of erosive gastroesophageal reflux disease; and in combination with antibiotics for the treatment of Helicobacter pylori infection. The company was incorporated in 2018 and is headquartered in Florham Park, New Jersey.

Ventyx Biosciences, Inc., a clinical-stage biopharmaceutical company, develops small molecule product candidates to address a range of inflammatory diseases. The company's lead clinical product candidate is VTX958, a selective allosteric tyrosine kinase type 2 inhibitor for psoriasis, psoriatic arthritis, and Crohn's disease. It is also developing VTX002, a sphingosine 1 phosphate receptor modulator that is in Phase II clinical trials for the treatment of ulcerative colitis; and VTX2735, a peripheral-targeted NOD-like receptor protein 3 inflammasome inhibitor to treat patients with cryopyrin-associated periodic syndrome. In addition, the company develops VTX3232, a CNS-penetrant NLRP3 inhibitor. Ventyx Biosciences, Inc. was incorporated in 2018 and is based in San Diego, 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.

MediciNova, Inc., a biopharmaceutical company, focuses on developing novel and small molecule therapeutics for the treatment of serious diseases with unmet medical needs in the United States. It is developing MN-166 (ibudilast), an oral anti-inflammatory and neuroprotective agent for treating neurological and other disorders, such as primary and secondary progressive multiple sclerosis, amyotrophic lateral sclerosis, chemotherapy-induced peripheral neuropathy, degenerative cervical myelopathy, glioblastoma, and substance dependence and addiction, as well as prevention of acute respiratory distress syndrome, and long COVID. The company's product pipeline also includes MN-221 (bedoradrine), a selective beta-2-adrenergic receptor agonist for the treatment of acute exacerbations of asthma; MN-001 (tipelukast), an orally bioavailable small molecule compound to treat fibrotic and other diseases, including nonalcoholic fatty liver disease and idiopathic pulmonary fibrosis; and MN-029 (denibulin), a tubulin binding agent for treating solid tumor cancers. It has license agreements with Kyorin Pharmaceutical Co., Ltd; Angiogene Pharmaceuticals, Ltd.; and Meiji Seika Kaisha, Ltd. The company was incorporated in 2000 and is headquartered in La Jolla, California.

CalciMedica, Inc., a clinical-stage biopharmaceutical company, focuses on developing therapeutics for illnesses caused by inflammatory and immunologic processes and direct cellular damage. The company's lead product candidate comprises Auxora, an intravenous formulated small molecule calcium release-activated (CRAC) channel inhibitors, which is in phase 2 clinical trials for the treatment of acute pancreatitis, asparaginase induced pancreatic toxicity, and acute kidney injury, as well as severe COVID-19 pneumonia. It also develops CM6336, an oral CRAC channel inhibitors for chronic inflammatory indications; and Auxora, for the treatment of acute ulcerative colitis and allergic asthma. The company is based in La Jolla, California.

Palatin Technologies, Inc., a biopharmaceutical company, develops targeted receptor-specific therapeutics for the treatment of various diseases in the United States. The company's lead product is Vyleesi, a melanocortin receptor (MCr) agonist for the treatment of premenopausal women with hypoactive sexual desire disorder. It is also developing oral PL8177, a selective MC1r agonist peptide that is in Phase 2 clinical trial for the treatment of inflammatory bowel diseases. In addition, the company engages in the development of PL9643, a peptide melanocortin agonist active at multiple MCrs, including MC1r and MC5r for anti-inflammatory ocular indications, such as dry eye disease, which is in Phase 3 clinical trial; and melanocortin peptides for diabetic retinopathy. Further, it is developing PL8177, an oral peptide formulation for treatment of ulcerative colitis, which entered Phase 2 clinical trials. Palatin Technologies, Inc. was founded in 1986 and is based in Cranbury, New Jersey.

Landos Biopharma, Inc., a clinical-stage biopharmaceutical company, discovers and develops oral therapeutics for patients with autoimmune diseases. Its lead product candidate is NX-13, an oral gut-selective Nucleotide Oligomerization Domain (NLRX1), a mitochondria-associated receptor associated with the modulation of inflammatory cytokines that is in Phase 2 clinical trial to treat ulcerative colitis (UC) and completed Phase 1 to treat Crohn's disease (CD). The company's preclinical candidates in development include LABP-73, an oral and small molecule NLRX1 pathway agonist for the treatment of asthma and eosinophilic disorders; LABP-66 is an oral and small molecule NLRX1 pathway agonist for the treatment of multiple sclerosis and neurodegenerative disorders; and LABP-69, an oral PLXDC2 agonist for the treatment of rheumatoid arthritis, UC, and CD. The company has a license and collaboration agreement with LianBio Respiratory Limited to develop, manufacture, and commercialize omilancor and NX-13. Landos Biopharma, Inc. was incorporated in 2017 and is headquartered in Blacksburg, Virginia.