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A metabolic disorder characterized by D-glyceric acid excretion. It has been described in several patients. Clinical findings include progressive neurological impairment, hypotonia, seizures, failure to thrive and metabolic acidosis. Some patients had hyperglycinemia secondary to the organic acidemia. However, some of the reported patients were asymptomatic. D-glyceric aciduria is caused by D-glycerate kinase deficiency. The GLYCTK gene has been mapped to 3p21.
Features include always present findings: Encephalopathy, Elevated circulating D-glyceric acid concentration, Elevated CSF D-glyceric acid concentration, and Seizure and others; and common findings: Bilateral tonic-clonic seizure, Delayed CNS myelination, Focal clonic seizure, and Cerebral cortical atrophy and others. 40 total HPO annotations.
Organ System | Phenotype Count | Example Features |
|---|---|---|
Brain and nerves | 13 |
GLYCTK encodes glycerate kinase (523 aa). Highest expression in Liver (178.6 TPM) and Small Intestine Terminal Ileum (36.6 TPM).
D-glyceric aciduria has been associated with mutations in the GLYCTK gene on chromosome 3.
GLYCTK is classified as a druggable target (Enzyme and Kinase categories) with score 0.0.
Genetic testing for GLYCTK is available. Testing is considered supportive for diagnosis.
Phenotype severity distribution: 13 always present features, 18 common features.
Estimated prevalence: Unknown (Unknown prevalence).
No clinical trials have been registered for D-glyceric aciduria.
3 publications have been identified in PubMed for D-glyceric aciduria. Research spans Review / Meta-Analysis (33%), Case Report / Case Series (33%), and Basic Science / Preclinical (33%).
Korwitz-Reichelt A (2026). [PMID: 41330740](https://pubmed.ncbi.nlm.nih.gov/41330740/). *Journal of inherited metabolic disease*. [Review / Meta-Analysis]
Li Y (2025). [PMID: 40467571](https://pubmed.ncbi.nlm.nih.gov/40467571/). *Cell death discovery*. [Basic Science / Preclinical]
Kingma SDK (2024). [PMID: 39619776](https://pubmed.ncbi.nlm.nih.gov/39619776/). *Molecular genetics and metabolism reports*. [Case Report / Case Series]
Data assembled from 7 of 12 sources · Last updated Sep 19, 2026, 3:31 AM UTC
Online Mendelian Inheritance in Man
European rare disease database
Genetic and Rare Diseases Info Center
Common questions about D-glyceric aciduria
Muscles | 4 | Cerebral cortical atrophy, Low muscle tone (hypotonia), Axial hypotonia |
Digestive system | 2 | Gastroesophageal reflux, Reduced hepatic D-glycerate kinase activity |
Growth and development | 2 | Failure to thrive, Growth delay |
Pregnancy and birth | 2 | Neonatal hypotonia, Neonatal respiratory distress |
Lab test results | 1 | Elevated circulating D-glyceric acid concentration |
Metabolism | 1 | Metabolic acidosis |
Bones and joints | 1 | Severe backward arching of the body (opisthotonus) |
Head and neck | 1 | Microcephaly |
Heart and blood vessels | 1 | Bradycardia |
Eyes | 1 | Optic nerve hypoplasia |
Ears | 1 | Inner ear hearing loss (sensorineural hearing impairment) |
Lungs and breathing | 1 | Neonatal respiratory distress |