A 30-year-old patient presented with body temperature rise up to 38,5°C, pain in the small articulations of hands; face edemata and erythema. In blood: RBCs -2,6 × 1012/l; Hb- 98 r/n; WBCs - 2 × 109/l; ESR - 58 mm/h. In the urine: protein - 3,1 g/l; RBCs -10-15 in the vision field. What disease can be suspected in this case?