A 65 yo women comes to doctor with painful swollen hands, fingers, wrists that have been present and worsening for last 6 weeks. She states that the pain is worse when she gets out of bed in monring and gradually improves throughout the day. Her vitals are normal. Exam shwos symmetric swelling of proximal phalangeal joints and wrist joints. Joints are warm. ESR and CRP are elevated. 1. Auto antibodies agianst what antigen are associated with this condition?

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1. A 65 yo women comes to doctor with painful swollen hands, fingers, wrists that have been present and worsening for last 6 weeks. She states that the pain is worse when she gets out of bed in monring and gradually improves throughout the day. Her vitals are normal. Exam shwos symmetric swelling of proximal phalangeal joints and wrist joints. Joints are warm. ESR and CRP are elevated. 1. Auto antibodies agianst what antigen are associated with this condition?