1. A method of predicting a gene pathway, comprising: a first step of generating partial pathways from the gene expression pattern data by using a pathway extraction algorithm, and matching partial pathways to express them as a graph; a second step of generating partial pathways from PPI data by using a pathway extraction algorithm, and matching the partial pathways to express them as a graph; and a third step of combining a graph obtained in the first step and a graph obtained in the second step by using a graph matching algorithm to make a combined graph.