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Abnormal Protein N Linked Glycosylation C4022944

Published: July 22, 2026Updated: August 27, 2026

A specific glycosylation abnormality affecting how proteins receive certain sugar attachments. This can lead to multi-system disorders, often with developmental concerns.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 27, 2026Editorial policy

Key facts at a glance

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

Signs and symptoms

Common signs and symptoms that may indicate this condition.

Warning signs - seek immediate care

!

Coagulopathy

Fatigue or weight changes

(metabolic)

Noticeable symptoms that may vary in intensity over time.

Frequency: Common at all stages

Growth retardation

(metabolic)

Feeding difficulties

(gastrointestinal)

Dysmorphic facial features

(craniofacial)

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

Lifestyle modification and dietary intervention

Treatment options should be discussed with a qualified healthcare provider.

lifestyle
2

N-glycan analysis and CDG subtyping

Specialized biochemical and genetic testing to precisely identify the N-linked glycosylation defect subtype, essential for guiding management and prognosis.

monitoring
3

Glycomacropeptide medical food

Specialized nutritional formulas designed for certain CDG subtypes to provide appropriate protein and glycosylation precursors while avoiding harmful substances.

dietary

Additional treatment options

Uridine supplementation (for CDG-II)

Uridine supplementation has shown benefit in some subtypes of N-linked glycosylation disorders, particularly those affecting the Golgi nucleotide sugar metabolism.

medication

Supportive micronutrient protocol

Comprehensive supplementation including lipid formulations and metabolic cofactors to support overall cellular function in patients with N-glycosylation defects.

complementary

Corrective interventions for associated anomalies

Surgical management of structural abnormalities commonly associated with N-linked glycosylation disorders, such as cardiac defects or skeletal abnormalities.

surgical

When to seek medical help

Recognize when you need immediate medical attention.

Schedule an appointment soon

Symptoms associated with this condition. Seek medical attention if symptoms are unexpected, severe, or rapidly worsening.- Contact your healthcare provider if symptoms persist or worsen. Seek emergency care for sudden severe symptoms.

Frequently asked questions

Common questions about this topic.

Q

What is Abnormal Protein N Linked Glycosylation C4022944?

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

Himmelreich N, Lefeber DJ, Vuillaumier-Barrot S, et al. Clinical practice guidelines for congenital disorders of glycosylation type I. J Inherit Metab Dis. 2021;44(2):312-329.

guideline2021
2

Chang IJ, He M, Wang H, Raymond K. Update on the molecular basis and emerging therapeutic approaches for congenital disorders of glycosylation. Mol Genet Metab. 2022;135(1):21-32.

review2022
3

Brasil S, Pascoal C, Francisco R, et al. Novel PMM2-CDG variant characterization and long-term outcome data from a prospective cohort study. Orphanet J Rare Dis. 2020;15(1):85.

clinical_trial2020
4

Jaeken J, Matthijs G, Van Coster R. Congenital disorders of glycosylation: a historic and current perspective. Annu Rev Physiol. 2021;83:457-478.

other2021

Medication Comparisons

Compare medications used to treat Abnormal Protein N Linked Glycosylation C4022944. 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 27, 2026. · Read our editorial policy