A 3-methylglutaconic aciduria that has_material_basis_in homozygous or compound heterozygous mutation in the CLPB gene on chromosome 11q13. The disease is Experimental Factor Ontology identifier EFO_0009014 (3-methylglutaconic aciduria with cataracts, neurologic involvement, and neutropenia). Also known as: 3-methylglutaconic aciduria type 7, 3-methylglutaconic aciduria type VII, MEGCANN, MGA7, MGCA7.