NCIt definition : Human PDE5A wild-type allele is located in the vicinity of 4q27 and is approximately
135 kb in length. This allele, which encodes cGMP-specific 3',5'-cyclic phosphodiesterase
protein, is involved in the regulation of second messenger metabolism.;
NCIt note : Downregulation of the PDE5A gene by BRAF may be associated with malignant melanoma.
(Cancer Cell. 2011; 19: 45-57.);