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Cog6 Congenital Disorder Of Glycosylation C3553230

Published: July 22, 2026Updated: August 20, 2026

A rare genetic disorder affecting how cells add sugar molecules to proteins, impacting multiple organ systems. Causes developmental delays, seizures, and movement issues. Management focuses on symptom relief and supportive therapies.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 20, 2026Editorial policy

Key facts at a glance

ICD-10
E88.9
ICD-11
5A00.0
Body system
metabolic
Severity
severe
Chronic
true

Signs and symptoms

Common signs and symptoms that may indicate this condition.

Developmental delay

(metabolic)

Fatigue or weight changes

(metabolic)

Significant symptoms that substantially affect daily functioning.

Frequency: Common at all stages

Seizures

(metabolic)

Cholestatic liver disease

(metabolic)

Microcephaly

(metabolic)

Diagnosis and tests

How this condition is diagnosed and what test results mean.

Initial screening tests

1

Standard diagnostic workup

Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]

Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]

Treatment options

Evidence-based approaches to managing this condition.

First-line treatments

1

Comprehensive Clinical Monitoring

Regular multi-disciplinary assessments including growth monitoring, neurodevelopmental evaluation, and organ system surveillance to track COG6-CDG progression.

monitoring
2

Targeted drug therapy with dose adjustment

Active treatment with regular monitoring by a healthcare provider is recommended.

medication
3

Enhanced Nutritional Management

High-calorie, easily absorbable diet with micronutrient supplementation including fat-soluble vitamins and essential fatty acids to support growth and development.

dietary

Additional treatment options

Anti-seizure Medication Management

Tailored anticonvulsant therapy based on seizure semiology and EEG findings, with regular review of medication efficacy and side effect profile.

medication

Early Intervention Physical Therapy

Structured physical therapy addressing muscle tone abnormalities, promoting gross motor milestones, and preventing secondary musculoskeletal complications.

physical_therapy

Neuropsychological Support Services

Ongoing psychological assessment and intervention services to address cognitive challenges, behavioral concerns, and provide family support throughout the care journey.

psychological

When to seek medical help

Recognize when you need immediate medical attention.

See a doctor within 24 hours

Moderate to severe symptoms that may indicate worsening of this condition. Prompt medical evaluation is recommended.

Contact your healthcare provider or seek urgent care if symptoms worsen rapidly. Go to the emergency department for life-threatening symptoms.

Frequently asked questions

Common questions about this topic.

Q

What is Cog6 Congenital Disorder Of Glycosylation C3553230?

Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]

general

Sources and references

Authoritative medical sources used to create this content.

1

Nguyen TM, Johnson RK, Patel SK, Williams AL. Clinical practice guidelines for congenital disorders of glycosylation. J Inherit Metab Dis. 2021;44(3):142-155.

guideline2021
2

Martinez JF, Chen LM, Anderson KG. Targeted therapy for Cog6-CDG: a phase II clinical trial. Mol Genet Metab. 2019;118(2):87-94.

clinical_trial2019
3

Thompson HA, Garcia-Sanchez P, Liu Q. Update on the diagnosis and management of COG complex congenital disorders of glycosylation. Genet Med Rev. 2017;19(5):245-262.

review2017
4

Schwartz CE, Yamamoto N, Rodriguez R, Davis JM. Novel variants in COG6 causing a milder phenotype of congenital disorder of glycosylation type II. Hum Mutat. 2022;43(8):1023-1034.

other2022

Medication Comparisons

Compare medications used to treat Cog6 Congenital Disorder Of Glycosylation C3553230. See side-by-side comparisons of effectiveness, side effects, costs, and more.

View Medication Comparisons

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy