A mouse monoclonal antibody MX35 targeting SLC34A2 protein developed by Kiyamova et al.23, 24 have provided data on the pattern of SLC34A2 expression and cellular localization in human breast, lung and ovarian cancers.10, 17 However, the origin of murine limited the antibody's full therapeutic potential. The gene discussed is SLC34A2; the disease is ovarian cancer.