Skip to content
How It Works
Explore
Ask a Question Resources Pricing
Who It's For
Patients
Decode results, prep for appointments, weigh options.
Caregivers & advocates
Carry the research load for someone you love.
Providers & clinicians
Resources for patients in your practice.
Log In Sign Up
PubMed This is a summary of 32 peer-reviewed journal articles Updated
Pediatrics

D-Glyceric Aciduria (DGA): A Patient Guide

At a Glance

D-glyceric aciduria is an extremely rare inherited metabolic disorder caused by pathogenic variants in both copies of GLYCTK. Children can have symptoms ranging from seizures and developmental delays to no symptoms, so care focuses on individualized monitoring and support.

Finding out that your child has D-Glyceric Aciduria (DGA) means entering a world of medicine that is still being defined. This condition is an extremely rare genetic metabolic disorder, with only about 18 tentative cases identified in recent medical literature worldwide [1][2]. Because DGA is so uncommon, you may find that you are learning about it alongside your child’s healthcare providers. At its core, confirmed DGA involves inheriting two disease-causing (pathogenic) variants in the GLYCTK gene. This deficiency prevents the body from properly processing D-glycerate, leading to its buildup and eventual excretion through the urine [3][4].

The way DGA affects each person can vary dramatically, which is one of the most significant challenges for families and doctors alike. The clinical spectrum is surprisingly wide: some individuals may experience severe neurological challenges starting in infancy, such as seizures or developmental delays, while others with similar genetic markers may be completely asymptomatic and lead typical lives [4][2]. This variability means that a diagnosis of DGA does not come with a single, predetermined outcome. Instead, it serves as a starting point for understanding your child’s unique metabolic and developmental needs [4].

Because there is no single, universal protocol for treating DGA, management is highly personalized and centered on your child’s specific symptoms. Your care team will focus on close monitoring of their growth and development [2]. For some children, metabolic specialists may also recommend a customized acute illness plan, though this is determined on an individual basis rather than being a universal requirement for every child with DGA [5]. This care often involves a partnership between your local pediatrician and a specialized metabolic center to ensure that your child has the necessary support [6].

While the rarity of DGA brings a sense of uncertainty, it also means that you are part of a very small group of families and researchers who are helping to map out this condition. By staying engaged with a multidisciplinary team and focusing on your child’s individual progress, you can ensure they receive the surveillance and supportive care required to help them thrive. Your role as an advocate and an observer is vital as you and your medical team navigate this journey together [6][7].

In this guide

6 chapters

01

Understanding D-Glyceric Aciduria

Learn what D-glyceric aciduria means, how GLYCTK variants cause it, why symptoms vary, and what families should know about diagnosis and uncertainty.

02

Symptoms and the Clinical Spectrum

Learn how D-glyceric aciduria symptoms can range from none to developmental and neurological problems, why severity varies, and what monitoring may involve.

03

The Diagnostic Process and Avoiding 'Look-Alikes'

Learn how D-glyceric aciduria is diagnosed, including urine glycerate testing, D- versus L-glycerate analysis, GLYCTK genetic results, VUS findings, and key look-alikes.

04

Building Your Care Team

Learn how to build a care team for D-glyceric aciduria, coordinate a metabolic center with local doctors, and prepare emergency information for your child.

05

Medical Management and Living with DGA

Learn how D-glyceric aciduria is managed, including seizure care, therapy, diet guidance, illness planning, emergency signs, and metabolic emergency letters.

06

Future Outlook and Prognosis

Learn what D-glyceric aciduria prognosis may involve, why outcomes vary, and how developmental monitoring and symptom-based care support your child over time.

Common questions in this guide

What is D-glyceric aciduria?
D-glyceric aciduria is an extremely rare inherited metabolic disorder linked to disease-causing variants in both copies of the GLYCTK gene. The condition affects how the body processes D-glycerate, which may build up and leave the body in urine.
What symptoms can DGA cause in a child?
Some children with DGA develop serious neurological problems in infancy, including seizures or developmental delays. Others with similar GLYCTK findings may have no symptoms, so the diagnosis alone does not predict a child’s outcome.
How is D-glyceric aciduria managed?
There is no single treatment plan for every child with DGA. Care is tailored to the child and may include monitoring growth and development, treating specific symptoms, and coordinating support between a pediatrician and a metabolic center.
Should my child have an emergency illness plan for DGA?
An acute illness plan may be helpful for some children, but it is not automatically needed for everyone with DGA. A metabolic specialist should decide whether an individualized plan is appropriate based on your child’s symptoms, health, and medical history.
Which specialists should care for a child with GLYCTK variants?
Care commonly involves your child’s local pediatrician and a metabolic specialist or specialized metabolic center. The team can determine whether additional genetics or other specialists are needed based on the child’s symptoms and specific GLYCTK variants.

Get notified when new evidence is published on D-glyceric aciduria.

We monitor PubMed for new peer-reviewed studies on this topic and email a short summary when something meaningful changes.

References

References (7)
  1. 1

    Human d-Glycerate Kinase, Encoded by GLYCTK and Deficient in d-Glyceric Aciduria, Is a Mitochondrial Enzyme.

    Korwitz-Reichelt A, Schulke D, Walter M, Sass JO

    Journal of inherited metabolic disease 2026; (49(1)):e70119 doi:10.1002/jimd.70119.

    PMID: 41330740
  2. 2

    Severe infantile epileptic encephalopathy associated with D-glyceric aciduria: report of a novel case and review.

    Zehavi Y, Mandel H, Eran A, et al.

    Metabolic brain disease 2019; (34(2)):557-563 doi:10.1007/s11011-019-0384-x.

    PMID: 30637540
  3. 3

    D-glyceric aciduria due to GLYCTK mutation: Disease or non-disease?

    Kingma SDK, Steinbusch LKM, Aukema SM, et al.

    Molecular genetics and metabolism reports 2024; (41()):101159 doi:10.1016/j.ymgmr.2024.101159.

    PMID: 39619776
  4. 4

    Further evidence that d-glycerate kinase (GK) deficiency is a benign disorder.

    Kalim A, Fitzsimons P, Till C, et al.

    Brain & development 2017; (39(6)):536-538 doi:10.1016/j.braindev.2017.01.005.

    PMID: 28190537
  5. 5

    Inborn Errors of Metabolism with Acidosis: Organic Acidemias and Defects of Pyruvate and Ketone Body Metabolism.

    Schillaci LP, DeBrosse SD, McCandless SE

    Pediatric clinics of North America 2018; (65(2)):209-230 doi:10.1016/j.pcl.2017.11.003.

    PMID: 29502910
  6. 6

    Multidisciplinary Care of Patients with Inherited Metabolic Diseases and Epilepsy: Current Perspectives.

    Tumienė B, Del Toro Riera M, Grikiniene J, et al.

    Journal of multidisciplinary healthcare 2022; (15()):553-566 doi:10.2147/JMDH.S251863.

    PMID: 35387391
  7. 7

    Perspectives of pediatric patients with inborn errors of metabolism on long-term treatment and metabolic emergency management.

    Harings T, Bertsche T, Thiele AG, et al.

    Orphanet journal of rare diseases 2025; (20(1)):502 doi:10.1186/s13023-025-04046-y.

    PMID: 41053858

This page is for informational purposes only and does not constitute medical advice. Your child’s pediatrician and metabolic or genetics team should guide testing, monitoring, and illness planning.