<prompt> The following are causes of hematuria in childhood exceptAlpos syndromeE. coli 0157Factor V Leiden deficiencyAlpha thalassemia  <response>: Haemolytic uraemia syndrome may be triggered by E.coli 0157. Factor V leiden deficiency is present in up to 10 of the Caucasian population and results in a pro-coagulation tendency, which in turn may lead to renal thrombosis and haematuria. 