H, There: In data_clinical_sample.txt, the CANCER_TYPE of lung has three types: [1] "Non-Small Cell Lung Cancer" "Small Cell Lung Cancer" [3] "Lung Cancer, NOS" What is the last one: "Lung Cancer, NOS"? what does "NOS" mean here? Thx Ming

Created by yiming1967
Hi, Tom: Thanks a lot for the info, Even with that, I am still trying understanding what is the difference here especially the 3rd one compared to the 1 and 2. Does it mean it is not clear whether it is "Non-Small Cell Lung Cancer or "Small Cell Lung Cancer", but at least it is lung cancer. Is my understanding correct? [1] "Non-Small Cell Lung Cancer" "Small Cell Lung Cancer" [3] "Lung Cancer, NOS" Thanks and best Ming
Hi @yiming1967, The NOS stands for "not otherwise specified" Best, Tom

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