Legend:

• Concept Types
  • target (single disease)
  • classification term
  • pathway-based classification term
  • clinical findings
  • multiple types disease
  • single disease
  • disease type

• Congenital, Hereditary, and Neonatal Diseases and Abnormalities related to Glycans
  • Genetic Diseases, Inborn
    • Metabolism, Inborn Errors
      • Lysosomal Storage Diseases (degradation)
        • Pathogenesis
          • Genetic disorders of glycan degradation
            • Disorders of sphingolipid metabolism and other lipid storage disorders
              • Sphingolipidosis
                • Gangliosidosis
                  • GM2 gangliosidosis
                    • GM2-gangliosidosis, AB variant (GDGDB) [GM2A]
        • Hereditary disorders by systems
          • Genetic disorders of glycan degradation (by systems, signs and symptoms)
            • Diseases
              • Eye Diseases
                • Retinal Diseases
                  • Retinal Degeneration
                    • GM2-gangliosidosis, AB variant (GDGDB) [GM2A]
              • Musculoskeletal Diseases
                • Muscular Diseases
                  • Muscle Weakness
                    • GM2-gangliosidosis, AB variant (GDGDB) [GM2A]
              • Nervous System Diseases
                • Central Nervous System Diseases
                  • Brain Diseases
                    • Brain Diseases, Metabolic
                      • Brain Diseases, Metabolic, Inborn
                        • GM2-gangliosidosis, AB variant (GDGDB) [GM2A]
                • Neurologic Manifestations
                  • Neuromuscular Manifestations
                    • Muscle Weakness
                      • GM2-gangliosidosis, AB variant (GDGDB) [GM2A]
                  • Paralysis
                    • GM2-gangliosidosis, AB variant (GDGDB) [GM2A]
                  • Seizures
                    • GM2-gangliosidosis, AB variant (GDGDB) [GM2A]
                  • Sensation Disorders
                    • Hearing Disorders
                      • Hearing Loss
                        • GM2-gangliosidosis, AB variant (GDGDB) [GM2A]
                    • Vision Disorders
                      • Blindness
                        • GM2-gangliosidosis, AB variant (GDGDB) [GM2A]
              • Otorhinolaryngologic Diseases
                • Ear Diseases
                  • Hearing Disorders
                    • Hearing Loss
                      • GM2-gangliosidosis, AB variant (GDGDB) [GM2A]
              • Pathological Conditions, Signs and Symptoms
                • Signs and Symptoms
                  • Mobility Limitation
                    • GM2-gangliosidosis, AB variant (GDGDB) [GM2A]
            • Psychiatry and Psychology
              • Mental Disorders
                • Mental Disorders Diagnosed in Childhood
                  • Developmental Disabilities
                    • GM2-gangliosidosis, AB variant (GDGDB) [GM2A]
                  • Motor Skills Disorders
                    • GM2-gangliosidosis, AB variant (GDGDB) [GM2A]