National Center for Advancing and Translational Sciences Genetic and Rare Diseases Information Center, a program of the National Center for Advancing and Translational Sciences

COG6-CDG (CDG-IIL)



Other Names:
CDG2L; CDG IIl; CDGIIl; CDG2L; CDG IIl; CDGIIl; Congenital disorder of glycosylation, type IIl See More
This disease is grouped under:

This table lists symptoms that people with this disease may have. For most diseases, symptoms will vary from person to person. People with the same disease may not have all the symptoms listed. This information comes from a database called the Human Phenotype Ontology (HPO) . The HPO collects information on symptoms that have been described in medical resources. The HPO is updated regularly. Use the HPO ID to access more in-depth information about a symptom.

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Medical Terms Other Names
Learn More:
HPO ID
5%-29% of people have these symptoms
Chronic diarrhea 0002028
Decreased circulating antibody level 0004313
Elevated hepatic transaminase
High liver enzymes
0002910
Hepatomegaly
Enlarged liver
0002240
Impaired T cell function
T-cell dysfunction
0005435
Inflammation of the large intestine 0002037
Macrovesicular hepatic steatosis 0001403
Micronodular cirrhosis 0001413
Muscular hypotonia of the trunk
Low muscle tone in trunk
0008936
Postaxial polydactyly 0100259
Proximal tubulopathy 0000114
Recurrent infections
Frequent infections
Frequent, severe infections
Increased frequency of infection
infections, recurrent
Predisposition to infections
Susceptibility to infection
[ more ]
0002719
Retrognathia
Receding chin
Receding lower jaw
Weak chin
Weak jaw
[ more ]
0000278
Percent of people who have these symptoms is not available through HPO
Abnormal bleeding
Bleeding tendency
0001892
Anemia
Low number of red blood cells or hemoglobin
0001903
Autosomal recessive inheritance 0000007
Cerebral atrophy
Degeneration of cerebrum
0002059
Cholestasis
Slowed or blocked flow of bile from liver
0001396
Congenital onset
Symptoms present at birth
0003577
Death in infancy
Infantile death
Lethal in infancy
[ more ]
0001522
Epicanthus
Eye folds
Prominent eye folds
[ more ]
0000286
Failure to thrive
Faltering weight
Weight faltering
[ more ]
0001508
Generalized hypotonia
Decreased muscle tone
Low muscle tone
[ more ]
0001290
Global developmental delay 0001263
Hyperbilirubinemia
High blood bilirubin levels
0002904
Hyperkeratosis 0000962
Hypohidrosis
Decreased ability to sweat
Decreased sweating
Sweating, decreased
[ more ]
0000966
Immunodeficiency
Decreased immune function
0002721
Intellectual disability
Mental deficiency
Mental retardation
Mental retardation, nonspecific
Mental-retardation
[ more ]
0001249
Intrauterine growth retardation
Prenatal growth deficiency
Prenatal growth retardation
[ more ]
0001511
Loss of consciousness
Passing out
0007185
Microcephaly
Abnormally small skull
Decreased circumference of cranium
Decreased size of skull
Reduced head circumference
Small head circumference
[ more ]
0000252
Pancytopenia
Low blood cell count
0001876
Seizure 0001250
Splenomegaly
Increased spleen size
0001744
Thrombocytopenia
Low platelet count
0001873
Type II transferrin isoform profile 0012301
Ventriculomegaly 0002119
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Last updated: 7/1/2020

If you need medical advice, you can look for doctors or other healthcare professionals who have experience with this disease. You may find these specialists through advocacy organizations, clinical trials, or articles published in medical journals. You may also want to contact a university or tertiary medical center in your area, because these centers tend to see more complex cases and have the latest technology and treatments.

If you can’t find a specialist in your local area, try contacting national or international specialists. They may be able to refer you to someone they know through conferences or research efforts. Some specialists may be willing to consult with you or your local doctors over the phone or by email if you can't travel to them for care.

You can find more tips in our guide, How to Find a Disease Specialist. We also encourage you to explore the rest of this page to find resources that can help you find specialists.

Healthcare Resources


Support and advocacy groups can help you connect with other patients and families, and they can provide valuable services. Many develop patient-centered information and are the driving force behind research for better treatments and possible cures. They can direct you to research, resources, and services. Many organizations also have experts who serve as medical advisors or provide lists of doctors/clinics. Visit the group’s website or contact them to learn about the services they offer. Inclusion on this list is not an endorsement by GARD.

Organizations Supporting this Disease

Social Networking Websites

  • RareConnect has an online community for patients and families with this condition so they can connect with others and share their experiences living with a rare disease. The project is a joint collaboration between EURORDIS (European Rare Disease Organisation) and NORD (National Organization for Rare Disorders).

These resources provide more information about this condition or associated symptoms. The in-depth resources contain medical and scientific language that may be hard to understand. You may want to review these resources with a medical professional.

In-Depth Information

  • The Monarch Initiative brings together data about this condition from humans and other species to help physicians and biomedical researchers. Monarch’s tools are designed to make it easier to compare the signs and symptoms (phenotypes) of different diseases and discover common features. This initiative is a collaboration between several academic institutions across the world and is funded by the National Institutes of Health. Visit the website to explore the biology of this condition.
  • Online Mendelian Inheritance in Man (OMIM) is a catalog of human genes and genetic disorders. Each entry has a summary of related medical articles. It is meant for health care professionals and researchers. OMIM is maintained by Johns Hopkins University School of Medicine. 
  • PubMed is a searchable database of medical literature and lists journal articles that discuss COG6-CDG (CDG-IIL). Click on the link to view a sample search on this topic.

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