Seres Therapeutics, Inc., a microbiome therapeutics company, develop microbiome therapeutics to treat the modulation of the colonic microbiome. It develops a novel class of biological drugs that are designed to treat by modulating the microbiome to restore health by repairing the function of a disrupted microbiome to a non-disease state. The company's lead product candidate is VOWST, an oral microbiome therapeutic that has completed Phase III clinical trial for the treatment of recurrent Clostridioides difficile infection. Its product pipeline also includes SER-155, an investigational oral fermented microbiome therapeutic which is in Phase 1b clinical trials for the treatment of gastrointestinal infections, bacteremia, and graft versus host disease in immunocompromised patients including patients receiving allogeneic hematopoietic stem cell transplantation. In addition, the company engages in the development of SER-287 which is in Phase 2b and SER-301 that is in Phase 1b to treat ulcerative colitis. Further, it has license Agreement with NHSc Rx License GmbH for the therapeutic products based on the microbiome technology, which includes VOWST product candidate, which is developed for the treatment of CDI and recurrent CDI; and collaboration license agreement with Société des Produits Nestlé S.A. (Nestlé) for the development and commercialization of certain product candidates for the treatment and management of CDI and inflammatory bowel disease including UC and Crohn's disease. The company was formerly known as Seres Health, Inc. and changed its name to Seres Therapeutics, Inc. in May 2015. Seres Therapeutics, Inc. was incorporated in 2010 and is headquartered in Cambridge, Massachusetts.

Spyre Therapeutics, Inc., a preclinical stage biotechnology company, focuses on developing therapeutics for patients living with inflammatory bowel disease (IBD). It develops SPY001, a human monoclonal immunoglobulin G1 antibody designed to bind selectively to the a4ß7 integrin being developed for the treatment of IBD (ulcerative colitis and Crohn's disease). The company is also developing SPY002, a human monoclonal antibody (mAb)candidates designed to bind to tumor necrosis factor-like ligand 1A; and SPY120, a combination of SPY001 (anti-a4ß7) and SPY002 (anti-TL1A) antibodies, which are in preclinical studies. In addition, its other early-stage programs include SPY003, an anti-IL-23 mAb; SPY004, a novel mechanism of action (MOA) mAb; SPY130, a combination of anti-a4ß7 and anti-IL-23 mAbs; and SPY230, a combination of anti-TL1A and anti-IL-23 mAbs. The company was formerly known as Aeglea BioTherapeutics, Inc. and changed its name to Spyre Therapeutics, Inc. in November 2023. Spyre Therapeutics, Inc. was incorporated in 2013 and is based in Waltham, Massachusetts.

Ironwood Pharmaceuticals, Inc., a healthcare company, focuses on the development and commercialization of gastrointestinal (GI) products. It markets linaclotide, a guanylate cyclase type-C (GC-C) agonist for the treatment of adults suffering from irritable bowel syndrome with constipation or chronic idiopathic constipation under the LINZESS name in the United States, Mexico, Japan, Saudi Arabia, and China, as well as under the CONSTELLA name in the Canada and European countries. The company is also developing IW-3300, a GC-C agonist for the treatment of visceral pain conditions, including interstitial cystitis/bladder pain syndrome and endometriosis; Apraglutide, a next-generation, long-acting synthetic peptide analog of glucagon-like peptide-2, as a differentiated therapeutic for rare diseases, including short bowel syndrome dependent on parenteral support and acute graft versus host disease; and CNP-104, an immune nanoparticle for the treatment of primary biliary cholangitis. The company has strategic partnerships with AbbVie Inc., AstraZeneca AB, and Astellas Pharma Inc. for the development and commercialization of linaclotide. The company was formerly known as Microbia, Inc. and changed its name to Ironwood Pharmaceuticals, Inc. in April 2008. Ironwood Pharmaceuticals, Inc. was incorporated in 1998 and is headquartered in Boston, Massachusetts.

GRI Bio, Inc., a clinical-stage biopharmaceutical company, focuses on discovering, developing, and commercializing therapies that target diseases leading to inflammatory, fibrotic, and autoimmune disorders in the United States. Its lead product candidate is GRI-0621, an oral inhibitor of type 1 Natural Killer T cells, which is in phase II clinical trial for the treatment of severe fibrotic lung diseases, such as idiopathic pulmonary fibrosis. The company's portfolio also includes GRI-0803, a novel oral agonist of type 2 Natural Killer T cells that is in preclinical development for the treatment of autoimmune disorders; a proprietary library of 500+ compounds; and GRI-0124 for the treatment of primary sclerosing cholangitis, and GRI-0729, which are in pre-clinical development. GRI Bio, Inc. was formerly known as Glycoregimmune, Inc. GRI Bio, Inc. was founded in 2009 and is based in LA Jolla, 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.

Biora Therapeutics, Inc., a clinical-stage biotechnology company, engages in developing oral biotherapeutics in the United States. The company offers NaviCap, a targeted oral delivery platform for delivery of therapeutics in the gastrointestinal tract to enhance the treatment of inflammatory bowel diseases; and BioJet, a systemic oral delivery platform designs to replace injection with needle-free, oral delivery of large molecules for management of chronic diseases. The company was formerly known as Progenity, Inc. and changed its name to Biora Therapeutics, Inc. in April 2022 to reflect its focus on its therapeutics pipeline. Biora Therapeutics, Inc. was founded in 2010 and is headquartered in San Diego, California.

Entero Therapeutics, Inc., a clinical-stage biopharmaceutical company, engages in the development of targeted and orally delivered therapies for the treatment of patients with gastrointestinal diseases. The company's pipeline candidates include latiglutenase, a targeted oral biotherapeutic for celiac disease designed to breakdown gluten into non-immunogenic peptides, currently under Phase 2 studies; and capeserod, a selective 5-HT4 receptor partial agonist under Phase 1 studies for the treatment of gastroparesis. It is also involved in the development of adrulipase, a recombinant lipase enzyme designed to enable the digestion of fats and other nutrients, currently under Phase 2 studies for the treatment of exocrine pancreatic insufficiency in patients with cystic fibrosis and chronic pancreatitis; and niclosamide, an oral small molecule with anti-inflammatory inhibitor therapy, currently under Phase 2 studies for the treatment of ulcerative proctitis and ulcerative proctosigmoiditis, as well as immune checkpoint inhibitor-associated colitis and diarrhea in metastatic cancer patients. The company was formerly known as First Wave BioPharma, Inc. and changed its name to Entero Therapeutics, Inc. in May 2024. Entero Therapeutics, Inc. was incorporated in 2014 and is based in Boca Raton, Florida.

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.