A 7-year-old girl is brought with complaints of generalized swelling of the body. Urinary examination reveals grade 3 proteinuria and the presence of hyaline and fatty casts. She has no history of hematuria. Which of the following statements about her condition is true?

Grade 3 proteinuria, and the presence of hyaline and fatty cast in urine suggest the diagnosis of nephrotic syndrome. Most common cause of nephrotic syndrome in a child is minimal change disease ( not IgA nephropathy or Alport syndrome) In minimal change disease there is no deposition of immune reactants (immunoglobulin or complement), and serum complement levels are normal.