passages.id: split_5_test_645_passage
passages.type: progene_text
passages.text: Initial renal biopsy showed the following WHO classes of LN : 2 patients ( 1 % ) , class I ; 9 patients ( 5 % ) , class II ; 46 patients ( 25 % ) , class III ; 101 patients ( 55 % ) , class IV ; and 25 patients ( 14 % ) , class V .