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Living with MGAT2-congenital disorder of glycosylation

A rare inherited condition with distinct facial features, seizures, developmental delay, and easy bleeding.

Understanding MGAT2-congenital disorder of glycosylation

MGAT2-congenital disorder of glycosylation is a rare inherited condition that affects how sugars attach to proteins.

Features include distinct facial features, repeated hand movements, seizures, and developmental delay that varies. A tendency to bleed is seen because platelets do not clump well. It starts in newborns and infants.

Signs & symptoms

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

  • Developmental delay
  • Seizures
  • Low muscle tone
  • Slow weight gain
  • Small head that grows slowly (progressive microcephaly)
  • Distinct facial shape

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 heart and blood vessel specialists.

  3. Consider genetic testing

    Changes in MGAT2 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

    CDG CARE may keep lists of experts for this condition.

Care & treatment

Care team
Brain and nervous system specialists (neurologists); Genetic specialists (geneticists); Heart and blood vessel specialists (cardiologists)
Expert care
Expert lists: CDG CARE
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 CDG CARE
  • 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
Should family members have MGAT2 genetic testing?
How should bleeding risk be handled before surgery?
Which therapies can support seizures and development?

Quick facts

Symptoms usually startNewborn and as an Infant
InheritanceAutosomal Recessive
GenesMGAT2

Changes in the MGAT2 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: alkuraya syndrome; carbohydrate deficient glycoprotein syndrome type 2a; carbohydrate deficient glycoprotein syndrome type iia; carbohydrate-deficient glycoprotein syndrome type ii; cdg - carbohydrate-deficient glycoprotein syndrome type ii; cdg iia

Patient organizations

  • CDG CAREMGAT2-congenital disorder of glycosylation · United States
Source: NIH GARD · MGAT2-congenital disorder of glycosylationGARD ID 9828 · 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 MGAT2-congenital disorder of glycosylation.

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