Abatacept is a soluble fusion protein, which links the extracellular domain of human cytotoxic T-lymphocyte-associated antigen 4 (CTLA-4) to the modified Fc (hinge, CH2, and CH3 domains) portion of human immunoglobulin G1 (IgG1). Structurally, abatacept is a glycosylated fusion protein with a MALDI-MS molecular weight of 92,300 Da and it is a homodimer of two homologous polypeptide chains of 357 amino acids each. It is produced through recombinant DNA technology in mammalian CHO cells. The drug has activity as a selective co-stimulation modulator with inhibitory activity on T lymphocytes. Although approved for the treatment of rheumatoid arthritis, Repligen has entered a slightly different formulation of CTLA4-Ig into clinical trials (RG2077).
Abatacept is indicated in adult patients for the treatment of moderately-to-severely active rheumatoid arthritis and for the treatment of active psoriatic arthritis. In patients two years of age and older, abatacept is also indicated for the treatment of moderately-to-severely active juvenile idiopathic arthritis.
Abatacept is also indicated for the prophylaxis of acute graft-versus-host disease, in combination with methotrexate and a calcineurin inhibitor such as tacrolimus, in patients two years of age and older who are undergoing hematopoietic stem cell transplantation from a matched or 1 allele-mismatched unrelated donor.
Local Institution - 0047, San Luis Potosi, Mexico
Local Institution - 0037, Stockholm, Sweden
Local Institution - 0018, Fort Lauderdale, Florida, United States
North Carolina Cancer Hospital, Chapel Hill, North Carolina, United States
Columbia University Irving Medical Center, New York, New York, United States
Children's National Medical Center, Washington, District of Columbia, United States
Necker Children's Hospital, Paris, France
Charite Berlin, Berlin, Germany
Clinic Burghausen, Burghausen, Germany
University Clinic Erlangen, Erlangen, Germany
Peking union medical college hospital, Beijing, Beijing, China
NHS Greater Glasgow and Clyde, Glasgow, United Kingdom
Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom
Local Institution, Shinjuku-ku, Tokyo, Japan
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