The present invention relates to an inhibitor of glycerol-3-phosphate dehydrogenase 1 (GPD1 inhibitor) for use in treatment and/or prevention of cancer. The present invention further relates to a kit comprising a GPD1 inhibitor comprised in a housing； to a method for identifying a subject suffering from cancer susceptible to cancer treatment by administration of a GPD1 inhibitor comprising a) determining in a sample of said subject the amount of a GPD1 gene product, b) comparing said amount determined in step a) to a reference, and c) based on the result of step b), identifying a subject susceptible to cancer treatment by administration of a GPD1 inhibitor； and to further means and methods related thereto.
