The product of the three risk factors can be described by the following equation: logistic (p) = In(p/[1 − p]) = β0 + β1X1 + β2X2 + β3X3, where p is the probability of poor short‐term outcomes of lung cancer‐associated acute ischemic stroke, X1 is the D‐D level, X2 is the CRP level, and X3 is the neutrophil count. This evidence concerns the gene CRP and lung cancer.