Increased urinary albumin excretion rate in breast cancer patients.
A high frequency of slightly increased urinary albumin excretion (UAE) has been reported in patients with malignancies. Earlier studies have indicated a prognostic significance of UAE in some malignant diseases. We measured urinary albumin in 24-h urine samples in 44 patients with newly diagnosed early breast cancer and in 22 patients with relapse of metastatic breast cancer disease. The prevalence of microalbuminuria ( > or = 20 microg/min) was 20.5% in patients with early breast cancer and 54.5% in patients with metastatic disease. Median UAE was significantly higher in patients with metastatic breast cancer compared with the early breast cancer group (20.5 microg/min vs. 9.2 microg/min; p < 0.01). In patients with metastatic breast cancer, univariate survival analysis revealed a significantly lower survival rate in patients with microalbuminuria compared with the normoalbuminuric group (p <0.001). The present study demonstrates a high frequency of microalbuminuria in patients with breast cancer. Increased UAE was most prevalent in patients with metastatic disease. Our results also suggest that UAE may be a prognostic marker in metastatic breast cancer. Further prospective studies with a larger number of patients and controls are needed to test the validity of these observations.
Pedersen
L M
LM
Department of Oncology and Haematology, Roskilde County Hospital, Denmark. larsmp@dadlnet.dk
Sørensen
P G
PG
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000419:Albuminuria / Q000652:urine*; D014408:Biomarkers, Tumor / Q000652:urine*; D001943:Breast Neoplasms / Q000473:pathology / Q000652:urine*; D005260:Female; D006801:Humans; D008875:Middle Aged; D009362:Neoplasm Metastasis; D011237:Predictive Value of Tests; D011379:Prognosis; D012680:Sensitivity and Specificity
D014408:Biomarkers, Tumor