In contrast, this same difference is not observed in the case of renal cysts, where prevalence amongst TSC1 and TSC2 patients is almost equal at 27% and 29%, respectively (Fig. 6A), an insignificant difference at p < 0.05 (Z = −0.18, df = 1, p = 0.86). The gene discussed is TSC1; the disease is cystic kidney disease.