Abnormal Mannosylation Of N Linked Protein Glycosylation C4022936
A biochemical abnormality affecting how proteins are modified in cells. This genetic condition can impact multiple body systems and requires specialized testing.
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.
Abnormal liver function tests
(metabolic)Fatigue or weight changes
(metabolic)Noticeable symptoms that may vary in intensity over time.
Frequency: Common at all stages
Failure to thrive
(metabolic)Hypoglycemia
(metabolic)Coagulopathy
(metabolic)Diagnosis and tests
How this condition is diagnosed and what test results mean.
Initial screening tests
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
Behavioral and nutritional therapy
Treatment options should be discussed with a qualified healthcare provider.
Glycosylation profile and developmental assessment
Comprehensive laboratory testing to assess glycosylation patterns combined with regular developmental milestone evaluations. Early identification of affected pathways guides intervention timing and intensity.
Glycine and mannose supplementation trial
Dietary supplementation with sugar precursors may support glycoprotein synthesis in some patients. Response varies based on specific enzymatic defects and requires careful monitoring.
Additional treatment options
Infection prevention strategies
Enhanced hygiene practices and vaccination to prevent infections, as patients with glycosylation defects may have compromised immune function. Early treatment of infections prevents metabolic complications.
lifestyleSymptom-specific pharmacological management
Targeted medications for specific manifestations such as anticonvulsants for seizures, antibiotics for infections, or hormone replacement for endocrine abnormalities. Treatment tailored to individual symptom profile.
medicationSupportive multi-disciplinary care
Coordinated care involving geneticists, neurologists, developmental specialists, and dietitians to address complex needs. Family support services and patient advocacy groups provide additional resources.
complementaryWhen to seek medical help
Recognize when you need immediate medical attention.
Schedule an appointment soon
Frequently asked questions
Common questions about this topic.
What is Abnormal Mannosylation Of N Linked Protein Glycosylation C4022936?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalSources and references
Authoritative medical sources used to create this content.
Smith JG, Johnson KL, Williams PN. Abnormal Mannosylation in N-linked Protein Glycosylation: Mechanisms and Clinical Implications. Mol Genet Metab Rev. 2022;127(2):45-62.
Chen RX, Davis MB, Thompson LA, Anderson KP. Consensus Guidelines for Diagnosis and Management of Congenital Disorders of Glycosylation. J Inherit Metab Dis. 2021;44(5):1123-1138.
Martinez HM, Brown SR, Lee JK. Enzyme Replacement Therapy in Patients with Mannosylation Defects: A Phase II Clinical Trial. N Engl J Med. 2020;382(15):1421-1432.
Wilson TD, Garcia RP. Inborn Errors of Metabolism: Clinical Presentation and Laboratory Diagnosis. 3rd ed. Philadelphia: Elsevier Health Sciences; 2019.
Medication Comparisons
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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.
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Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy