Term Name:	developmental and epileptic encephalopathy 55
Synonyms:	DEE55, early infantile epileptic encephalopathy 55, glycosylphosphatidylinositol biosynthesis defect 14, GPIBD14
Definition:	A developmental and epileptic encephalopathy characterized by onset in the first weeks or months of life of refractory seizures, profoundly impaired intellectual development, absent speech, spastic quadriplegia, and dyskinetic movements that has_material_basis_in homozygous or compound heterozygous mutation in the PIGP gene on chromosome 21q22.
Ontology:	Human Disease [DOID:0080283]   ( DOID:0080283 )