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Updated: May 27, 2026

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Published on: May 22, 2016
[Congenital glycosylation disorders: a study of two patients]
R Palencia1, N Higuera, S Vázquez
1Neuropediatría, Hospital Clínico, Valladolid, España. palenciar@ono.com
Insights
Congenital glycosylation disorders (CGDs) are rare genetic conditions affecting glycoprotein synthesis. Early recognition is crucial for managing diverse neurological and systemic symptoms in affected children.
Area of Science:
- Biochemistry
- Genetics
- Pediatrics
Background:
- Congenital glycosylation disorders (CGDs) are a group of rare genetic disorders stemming from defects in glycoprotein synthesis.
- These complex disorders can manifest with a wide range of clinical symptoms affecting multiple organ systems.
Observation:
- This report details two pediatric cases of CGD with varying ages and genders.
- Clinical, radiological, and laboratory findings consistent with CGD were observed in both patients.
- One case involved a multi-year follow-up, providing longitudinal data.
Findings:
- The presented cases highlight the diverse clinical presentations of CGD.
- Diagnostic findings underscore the importance of considering CGD in unexplained pediatric neurological conditions.
- Specific symptoms included psychomotor delay, hypotonia, epilepsy, and hepatic/coagulation abnormalities.
Implications:
- Pediatricians should consider CGD in the differential diagnosis of unexplained neurological symptoms.
- Early identification and diagnosis of CGD are essential for appropriate patient management and care.
- Further awareness and research into CGD are vital for improving patient outcomes.
Background:
Congenital glycosylation disorders (CGDs) are a group of disorders caused by a defect in glycoprotein synthesis. Clinical manifestations may affect to different organs.
Aims:
To describe two new patients cases with a CGD in order to make paediatricians aware of this disorder.
Clinical Cases:
Two new cases of different age and gender are presented, showing clinical manifestations, and radiological and laboratory findings compatible with CGD. One of the cases was followed up for several years.
Conclusions:
Glycosylation disorders are a group of conditions to bear in mind when considering the diagnosis of a patient with neurological symptoms of unexplained origin, particularly in those cases that include a delay in psychomotor activity, low muscle tone, epilepsy, and hepatic or coagulation disorders, as well as in patients with cerebellar or olivopontocerebellar atrophy.
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