disease has basis in dysfunction of GALK1 galactokinase deficiency DOID:14695 GALK deficiency GALK-D GARD:0002422 Galactokinase deficiency is a rare mild form of galactosemia characterized by early onset of cataract and an absence of the usual signs of classic galactosemia, i.e. feeding difficulties, poor weight gain and growth, lethargy, and jaundice. Galk deficiency ICD10:E74.2 ICD10:E74.29 MONDO:0009255 NCIT:C114767 OMIM:230200 Orphanet:79237 SCTID:124302001 UMLS:C0268155 galactokinase deficiency galactokinase deficiency galactosemia galactosemia 2 galactosemia II galactosemia type 2 hereditary galactokinase deficiency https://rarediseases.info.nih.gov/diseases/2422/galactokinase-deficiency galactosemia