What is the role of abatacept in the treatment of rheumatoid arthritis (RA)?

Updated: Mar 05, 2021
  • Author: Howard R Smith, MD; Chief Editor: Herbert S Diamond, MD  more...
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Abatacept is a selective costimulation modulator that inhibits T-cell activation by binding to CD80 and CD86, thereby blocking their interaction with CD28. CD28 interaction provides a signal needed for the full T-cell activation that is implicated in RA pathogenesis.

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