Immunoglobulin Fab Fragments
Univalent antigen-binding fragments composed of one entire IMMUNOGLOBULIN LIGHT CHAIN and the amino terminal end of one of the IMMUNOGLOBULIN HEAVY CHAINS from the hinge region, linked to each other by disulfide bonds. Fab contains the IMMUNOGLOBULIN VARIABLE REGIONS, which are part of the antigen-binding site, and the first IMMUNOGLOBULIN CONSTANT REGIONS. This fragment can be obtained by digestion of immunoglobulins with the proteolytic enzyme PAPAIN.
|Drug||Drug Name||Drug Indication|
|DB04949||Pexelizumab||For the treatment of inflammation during cardiac surgery.|
|DB06081||Caplacizumab||Capacizumab is approved for the treatment of adults experiencing an episode of acquired thrombotic thrombocytopenic purpura (aTTP) in conjunction with plasma exchange and immunosuppression in patients 18 years or older.[A174634, L5302] aTTP is a rare autoimmune condition presented by a disruption of blood clotting order which is translated into systemic microvascular thrombosis leading to profound thrombocytopenia, hemolytic anemia and organ ischemia. It is caused by the production of autoantibodies against ADAMTS-13 which is the protein in charge of cleaving the von-Wilebrand factor. The lack of this process produces the generation of ultra large von Wilebrand multimers that bind to platelets and form microthrombi and causing thromboembolic complications.[A174649] Previously, capacizumab was under review for the prevention of thrombosis in high-risk patients with acute coronary syndrome undergoing percutaneous coronary intervention but this indication was withdrawn.[A174634]|
|DB08904||Certolizumab pegol||Certolizumab pegol has been approved for several different conditions listed below: - Symptomatic management of Chron's disease patients and for the maintenance of clinical response in patients with moderate to severe disease with inadequate response to conventional therapy. - Treatment of adult patients with moderate to severely active rheumatoid arthritis. - Treatment of adult patients with active psoriatic arthritis. - Treatment of adult patients with active ankylosing spondylitis. - Treatment of adult patients with moderate-to-severe plaque psoriasis that are candidates for systemic therapy or phototherapy.[FDA label] - Treatment of adult patients with active non-radiographic axial spondyloarthritis with objective signs of inflammation.[L5819] In Canada, certolizumab pegol is additionally approved in combination with [methotrexate] for the symptomatic treatment, including major clinical response, and for the reduction of joint damage in adult patients with moderately to severely active rheumatoid arthritis and psoriatic arthritis.[L5825] Inflammation is a biological response against a potential threat. This response can be normal but in certain conditions, the immune system can attack the body's normal cells or tissues which causes an abnormal inflammation.[L5840] TNF-alpha has been identified as a key regulator of the inflammatory response. The signaling cascades of this inflammatory mediator can produce a wide range of reactions including cell death, survival, differentiation, proliferation and migration.[A176660]|