In the sentence extracted from biomedical literature, identify all the disease entities. The required answer format is the same sentence with HTML <span> tags to mark up specific entities. 
### Entity Markup Guides:
Use <span class="disease"> to denote a disease.

### Input Text: While only 5 % of sporadic Wilms tumours have intragenic WT1 mutations , > 90 % of patients with the Denys - Drash syndrome ( renal nephropathy , gonadal anomaly , predisposition to WT ) carry constitutional intragenic WT1 mutations .
### Output Text:
While only 5 % of <span class="disease">sporadic Wilms tumours</span> have intragenic WT1 mutations , > 90 % of patients with the <span class="disease">Denys - Drash syndrome</span> ( <span class="disease">renal nephropathy</span> , <span class="disease">gonadal anomaly</span> , <span class="disease">predisposition to WT</span> ) carry constitutional intragenic WT1 mutations . 