Amplification of the ANXA9 gene in human chromosomal region 1q21 in epithelial cancers indicates a likelihood of both in vivo drug resistance and metastasis, and serves as a biomarker indicating these aspects of the disease. ANXA9 can also serve as a therapeutic target. Interfering RNAs (iRNAs) (such as siRNA and miRNA) and shRNA adapted to inhibit ANXA9 expression, when formulated in a therapeutic composition, and delivered to cells of the tumor, function to treat the epithelial cancer.
STATEMENT OF GOVERNMENTAL SUPPORT
This invention was made during work supported by the National Cancer Institute, through Grants CA 58207 and CA 64602 and during work supported by the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. The government has certain rights in this invention.