Fam20b Congenital Disorder Of Glycosylation Cn379146
FAM20B congenital disorder of glycosylation is a rare genetic condition affecting how proteins are modified with sugar molecules. This can impact multiple body systems and cause various developmental problems. Treatment addresses specific symptoms and supportive care.
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.
Warning signs - seek immediate care
Hypoglycemia
Fatigue or weight changes
(metabolic)Significant symptoms that substantially affect daily functioning.
Frequency: Common at all stages
Coagulopathy
(hematologic)Skeletal abnormalities
(musculoskeletal)Growth retardation
(endocrine)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
Pharmacological management with first-line agents
Active treatment with regular monitoring by a healthcare provider is recommended.
Systematic clinical and laboratory monitoring
Regular assessment of growth parameters, organ function, and metabolic markers including liver function tests, coagulation studies, and developmental milestones to detect complications early.
Specialized nutritional support
Individualized nutritional planning addressing potential malabsorption, feeding difficulties, and specific micronutrient needs. May include modified textures, supplemental calories, or specific nutrient supplementation as indicated by testing.
Additional treatment options
Developmental therapy interventions
Early intervention physical and occupational therapy to support motor development, muscle tone management, and acquisition of functional skills appropriate to developmental stage.
physical_therapySupportive medical management
Pharmacological interventions addressing specific symptoms such as seizure management, cardiac support, or hepatic protection as determined by organ involvement and clinical presentation.
medicationIntegrative supportive care
Complementary approaches such as massage therapy for muscle tone management and occupational therapy for sensory integration support as part of comprehensive care.
complementaryWhen 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.
What is Fam20b Congenital Disorder Of Glycosylation Cn379146?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
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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.
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