I cannot create the summary of the requested article because the article titled "Dual Immunotherapy Improves DFS in Resectable Kidney Cancer" is not found in the search results provided. The available results include information on durvalumab and tremelimumab in the treatment of other types of cancer (lung cancer, hepatocellular carcinoma, rare tumors), but not specifically on their use in resectable renal cell carcinoma as measured by DFS (disease-free survival). In order to create an accurate and factual summary as per your requirements, I would need access to the full text of this particular article.