The present invention relates to methods for the in vitro diagnosis of a specific cancer, wherein said methods comprise the use of an antibody binding to progastrin and of a biomarker specific for said cancer.本發明有關體外診斷一特定癌症之方法,其中該方法包含使用會結合前胃泌激素之抗體及對該癌症具專一性之生物標記。