title: Value of CA 15:3 in the follow-up of breast cancer patients.
abstract: CA 15:3, a new tumour marker detectable by two monoclonal antibodies (115 D 8 and DF 3), was measured by an immunoradiometric technique on the ELSA solid phase. Sixteen percent of patients with localized breast cancer had CA 15:3 levels greater than 25 U ml-1, and levels increased with tumour size. CA 15:3 levels greater than 25 U ml-1 were found in 54% of patients with nodal involvement and in 91% of patients with metastatic breast disease. Measurement of CA 15:3 in 70 women with metastatic breast cancer and a normal CEA revealed positive CA 15:3 levels at diagnosis of the first metastasis in 66% of cases; 63% of these patients could be monitored with CA 15:3.
mesh_terms: D000951:Antigens, Neoplasm / Q000032:analysis*; D000954:Antigens, Surface / Q000032:analysis; D015295:Antigens, Tumor-Associated, Carbohydrate; D001943:Breast Neoplasms / Q000032:analysis* / Q000276:immunology; D002272:Carcinoembryonic Antigen / Q000032:analysis; D005260:Female; D006801:Humans; D009362:Neoplasm Metastasis; D011379:Prognosis; D011863:Radioimmunoassay
chemical_list: D000951:Antigens, Neoplasm; D000954:Antigens, Surface; D015295:Antigens, Tumor-Associated, Carbohydrate; D002272:Carcinoembryonic Antigen