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Living with D,L-2-hydroxyglutaric aciduria

A rare metabolic condition that starts in newborns with seizures, breathing pauses, low muscle tone, and severe delays in development.

Understanding D,L-2-hydroxyglutaric aciduria

D,L-2-hydroxyglutaric aciduria is a rare inherited metabolic condition that affects the brain and development beginning in the newborn period.

Babies with this condition can have severe seizures, pauses in breathing (apnea), and trouble breathing. They often have very low muscle tone, feeding problems, poor weight gain, and severe delays in development. Brain scans may show differences in the brain's structure. Tests show raised levels of certain substances in the blood, spinal fluid, and urine.

Signs & symptoms

Symptoms vary from person to person. GARD lists these among the most common:

  • Global developmental delay
  • Low muscle tone (hypotonia)
  • Seizures

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Specialists who may be involved include brain and nervous system specialists, genetic specialists and seizure and epilepsy specialists.

  3. Consider genetic testing

    Changes in SLC25A1 are linked to this condition. Genetic testing and counseling can help confirm a diagnosis and explain what it means for your family.

  4. Connect with expert centers

    Epilepsy Foundation may keep lists of experts for this condition.

Care & treatment

Care team
Brain and nervous system specialists (neurologists); Genetic specialists (geneticists); Seizure and epilepsy specialists (epileptologist)
Expert care
Expert lists: Epilepsy Foundation
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with Epilepsy Foundation
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
Would genetic testing for the SLC25A1 gene help our family?
What seizure care and feeding support are available?
Which specialists should be part of my child's care team?

Quick facts

Symptoms usually startNewborn and as an Infant
InheritanceAutosomal Recessive
GenesSLC25A1

GARD says changes in the SLC25A1 gene cause this condition. It is autosomal recessive, meaning a child inherits a changed copy of the gene from each parent.

GeneticNeurologicalInherited Metabolic

Also known as: combined d-2- and l-2-hydroxyglutaric aciduria; combined d-2-hydroxyglutaric acidemia and l-2-hydroxyglutaric acidemia; combined d-2-hydroxyglutaric aciduria and l-2-hydroxyglutaric aciduria; d,l-2-hga; d,l-2-hydroxyglutaric acidemia; d2l2ad

Patient organizations

Broader rare-disease groups

Source: NIH GARD · D,L-2-hydroxyglutaric aciduriaGARD ID 17540 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

You are more than your diagnosis

Perspectives from people navigating life with D,L-2-hydroxyglutaric aciduria.

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