Mereo BioPharma Group plc, a biopharmaceutical company, develops and commercializes therapeutics for the treatment of oncology and rare diseases in the United Kingdom and internationally. Its lead product candidate, etigilimab (OMP-313M32), an antibody T-cell immunoreceptor with Ig and ITIM domains, which is in Phase 1b clinical trial for the treatment of tumor. The company is also developing Navicixizumab (OMP-305B83), which has completed Phase 1b clinical trials for the treatment of the late line ovarian cancer Acumapimod (BCT-197), a p38 MAP kinase inhibitor that is in Phase II clinical trials to treat acute exacerbations of chronic obstructive pulmonary disease and Leflutrozole (BGS-649), an oral aromatase inhibitor for the treatment of hypogonadotropic hypogonadism. In addition, it develops rare disease product candidates, including Setrusumab (BPS-804), a novel antibody for the treatment of osteogenesis imperfecta and Alvelestat (MPH-966), an oral small molecule that is in Phase II clinical trial to treat Alpha-1 antitrypsin deficiency. The company has a collaboration with The University of Texas MD Anderson Cancer Center to evaluate anti-TIGIT therapeutic antibody candidate, etigilimab. Mereo BioPharma Group plc was incorporated in 2015 and is based in London, the United Kingdom.