In the late growing season of 2007, ASD7, a rice variety with intermediate resistance to BPH (containing Bph2), was outcrossed as the female parent to Digu, a broad-spectrum blast-resistant germplasm (containing Pid1, Pid2, and Pid3, identified in February 2004 and August 2009, respectively). This evidence concerns the gene PID1 and benign prostatic hyperplasia.