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: Analysis of the intragenic polymorphism D17S855 supports common origins of the mutations .
### Output Text:
Analysis of the intragenic polymorphism D17S855 supports common origins of the mutations . 