NCIt related terms : Phosphofructokinase Deficiency;
NCIt definition : A rare, autosomal recessive inherited metabolic disorder caused by mutation in the
PFKM gene. It results in the deficiency of the M subunit of the phosphofructokinase
enzyme. It is characterized by the presence of muscle pain and weakness and sometimes
rhabdomyolysis with myoglobinuria, following exercise. Affected infants develop muscle
weakness. Patients with the hemolytic form of this disorder develop hemolytic anemia
without signs or symptoms of muscle pain and weakness.;
Alternative definition : NICHD: A rare, autosomal recessive, inherited, metabolic disorder that is caused by
mutation of the PFKM gene, resulting in the deficiency of the M subunit of the phosphofructokinase
enzyme. It is characterized by the presence of muscle pain and weakness and sometimes
rhabdomyolysis with myoglobinuria, following exercise; affected infants develop muscle
weakness. Patients with the hemolytic form of this disorder develop hemolytic anemia
without signs or symptoms of muscle pain and weakness.;