Sumitomo Pharma Gets Orphan Designation

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FDA has granted Sumitomo Pharma Oncology an Orphan Drug Designation for TP-1287, an investigational oral CDK9 inhibitor for treating Ewing sarcoma. The rare type of cancer occurs in bones or in the soft tissue around the bones. “The disease occurs when a cell develops changes in its DNA that cause the cell to multiply quickly, resulting in a tumor of abnormal cells that is capable of invading and destroying healthy body tissue,” the company says, adding that abnormal cells can break away and metastasize throughout the body.

Sumitomo says TP-1287 has been shown to exhibit potent inhibition of intracellular kinases including CDK9. “Inhibition of CDK9 leads to downregulation of key antiapoptotic proteins such as MCL-1, which in turn has been shown to inhibit tumor growth in preclinical models of hematologic malignancies and several tumor types,” it says.

Currently, the company says TP-1287 is being evaluated in a Phase 1 study (NCT03604783) in patients with advanced metastatic or progressive solid tumors who are refractory to, or intolerant of, established therapy.

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