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: We found seven with the LA biochemical phenotype , and all had a 1721C - - > T transition in exon 7 in cis with the N314D missense mutation .
### Output Text:
We found seven with the LA biochemical phenotype , and all had a 1721C - - > T transition in exon 7 in cis with the N314D missense mutation . 