3-Methylglutaconic Aciduria, Type Viib, also known as 3-methylglutaconic aciduria, type vii, with cataracts, neurologic involvement and neutropenia, is related to clpb deficiency and 3-methylglutaconic aciduria, type viia. An important gene associated with 3-Methylglutaconic Aciduria, Type Viib is CLPB (ClpB Family Mitochondrial Disaggregase). Affiliated tissues include brain and bone marrow.