PKU and Me This blog post will be an introduction to a number of blogs discussing ‘PKU’. A rare genetic disorder that affects thousands of individuals worldwide yet is so rarely talked about. What Is It? PKU, also known as Phenylketonuria, is a rare genetic disorder. It affects a person’s ability to metabolize an amino acid by the name of Phenylalanine. How Is Phenylalanine Obtained? Phenylalanine