Patient developped leg myalgia, weakness and cough. There was CT evidence of interstitial lung disease. CCP was 835 RF 40. No arthralgias. Then creatinine increased from 0.7 to 2. Renal biopsy showed nonimmune crescent glomerulonephritis in 7/18 glomeruli. Treated with prednisone and Rituxan. any similar experience?