Plain radiographs in the extremities and joints revealed MCP degeneration in both hands, MCP2-4 bone erosion in the right hand, MCP2 bone erosion in the left hand, MCP2 in the right hand with severe synovial hyperplasia and mild synovitis, MCP3 with severe synovial hyperplasia and moderate synovitis, MCP4 moderate synovial hyperplasia and mild synovitis, MCP2 mild synovial hyperplasia and mild synovitis in both hands and PIP degeneration in both hands. Here, CCL13 is linked to synovitis.