| Disease | li-fraumeni syndrome | 
| Comorbidity | C0029463|osteosarcoma | 
| Sentences | 2 | 
| PubMedID- 20465837 | The genetic change most commonly associated with osteosarcoma is the loss of the tp53 tumor suppressor gene through either genetic mutation or loss of gene expression [13-15]. | 
| PubMedID- 23031740 | li-fraumeni syndrome with simultaneous osteosarcoma and liver cancer: increased expression of a cd44 variant isoform after chemotherapy. | 
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