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: Individuals who have rare alleles of the VNTR have an increased risk of certain types of cancers , including breast cancer ( 2 - 4 ) .
### Output Text:
Individuals who have rare alleles of the VNTR have an increased risk of certain types of <span class="disease">cancers</span> , including <span class="disease">breast cancer</span> ( 2 - 4 ) . 