HBEGF and autosomal dominant polycystic kidney disease: Table 1 shows that in patients with ADPKD, urinary EGF excretion was lower [18.6 (11.8–27.8) μg/24 h] compared with healthy controls [51.0 (34.9–65.4) μg/24 h, P < .001], whereas urinary HB-EGF excretion was similar between the two study groups (176 ± 101 versus 170 ± 88 ng/24 h, P = 0.64).