what is mps disease
The MPS Diseases. The Mucopolysaccharidoses (MPSs) are rare genetic disorders in children and adults. They involve an abnormal storage of mucopolysaccharides, caused by the absence of a specific enzyme. Without the enzyme, the breakdown process of mucopolysaccharides is incomplete.he MPS diseases are part of a larger group of disorders known as Lysosomal Storage Disorders (LSDs). The combined incidence of LSDs in the population is 1 in 5,000 live births.