Normal range of serum Amphiregulin in healthy adult human females

ObjectivesPrior to large studies in breast cancer patients, we have sought to establish the normal range of a potential serum biomarker, Amphiregulin, in healthy women and to determine whether sampling during the menstrual cycle influences the detected Amphiregulin levels. Design and methodsSerum Amphiregulin levels were quantified using a commercially available ELISA in 85 normal female donors. ResultsThe range of circulating Amphiregulin was 0-4467. pg/mL. The majority of women had no detectable circulating Amphiregulin (n= 54), and only five women had levels exceeding 500. pg/mL. Serum Amphiregulin levels did not vary significantly during the menstrual cycle (n= 7 women). ConclusionsDetection of circulating Amphiregulin in a significant minority of healthy women suggests that it may not have the specificity necessary for a population screening tool; however its potential utility for monitoring response to treatment or disease progression should be examined in breast cancer cases.