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Disease Profile

COG6-CDG (CDG-IIL)

Prevalence
Prevalence estimates on Rare Medical Network websites are calculated based on data available from numerous sources, including US and European government statistics, the NIH, Orphanet, and published epidemiologic studies. Rare disease population data is recognized to be highly variable, and based on a wide variety of source data and methodologies, so the prevalence data on this site should be assumed to be estimated and cannot be considered to be absolutely correct.

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US Estimated

Europe Estimated

Age of onset

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ICD-10

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Inheritance

Autosomal dominant A pathogenic variant in only one gene copy in each cell is sufficient to cause an autosomal dominant disease.

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Autosomal recessive Pathogenic variants in both copies of each gene of the chromosome are needed to cause an autosomal recessive disease and observe the mutant phenotype.

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X-linked
dominant X-linked dominant inheritance, sometimes referred to as X-linked dominance, is a mode of genetic inheritance by which a dominant gene is carried on the X chromosome.

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X-linked
recessive Pathogenic variants in both copies of a gene on the X chromosome cause an X-linked recessive disorder.

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Mitochondrial or multigenic Mitochondrial genetic disorders can be caused by changes (mutations) in either the mitochondrial DNA or nuclear DNA that lead to dysfunction of the mitochondria and inadequate production of energy.

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Multigenic or multifactor Inheritance involving many factors, of which at least one is genetic but none is of overwhelming importance, as in the causation of a disease by multiple genetic and environmental factors.

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Not applicable

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Other names (AKA)

CDG2L; CDG IIl; CDGIIl;

Symptoms

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.

Medical Terms Other Names
Learn More:
HPO ID
1%-4% of people have these symptoms
Abnormal bleeding
Bleeding tendency
0001892
Abnormal cortical gyration
0002536
Atrial septal defect
An opening in the wall separating the top two chambers of the heart
Hole in heart wall separating two upper heart chambers

[ more ]

0001631
Cerebellar atrophy
Degeneration of cerebellum
0001272
Cerebral atrophy
Degeneration of cerebrum
0002059
Cholestasis
Slowed or blocked flow of bile from liver
0001396
Chronic diarrhea
0002028
Cirrhosis
Scar tissue replaces healthy tissue in the liver
0001394
Death in infancy
Infantile death
Lethal in infancy

[ more ]

0001522
Decreased specific anti-polysaccharide antibody level
0002848
Dry skin
0000958
Elevated alkaline phosphatase
Greatly elevated alkaline phosphatase
High serum alkaline phosphatase
Increased alkaline phosphatase
Increased serum alkaline phosphatase

[ more ]

0003155
Elevated gamma-glutamyltransferase level
0030948
Elevated hepatic transaminase
High liver enzymes
0002910
Elevated serum creatine kinase
Elevated blood creatine phosphokinase
Elevated circulating creatine phosphokinase
Elevated creatine kinase
Elevated serum CPK
Elevated serum creatine phosphokinase
High serum creatine kinase
Increased CPK
Increased creatine kinase
Increased creatine phosphokinase
Increased serum CK
Increased serum creatine kinase
Increased serum creatine phosphokinase

[ more ]

0003236
Epicanthus
Eye folds
Prominent eye folds

[ more ]

0000286
Esophageal varix
Enlarged vein in esophagus
0002040
Failure to thrive
Faltering weight
Weight faltering

[ more ]

0001508
Generalized hypotonia
Decreased muscle tone
Low muscle tone

[ more ]

0001290
Global developmental delay
0001263
Hepatomegaly
Enlarged liver
0002240
Hip dysplasia
0001385
Hydrocephalus
Too much cerebrospinal fluid in the brain
0000238
Hyperechogenic kidneys
0004719
Hyperkeratosis
0000962
Hypohidrosis
Decreased ability to sweat
Decreased sweating
Sweating, decreased

[ more ]

0000966
Hypoplasia of dental enamel
Underdeveloped teeth enamel
0006297
Hypoplasia of the corpus callosum
Underdevelopment of part of brain called corpus callosum
0002079
Impaired T cell function
T-cell dysfunction
0005435
Inflammation of the large intestine
0002037
Microcephaly
Abnormally small skull
Decreased circumference of cranium
Decreased size of skull
Reduced head circumference
Small head circumference

[ more ]

0000252
Optic atrophy
0000648
Pancytopenia
Low blood cell count
0001876
Patent ductus arteriosus
0001643
Peau d'orange
0025533
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
Seizure
0001250
Splenomegaly
Increased spleen size
0001744
Thrombocytopenia
Low platelet count
0001873
Type II transferrin isoform profile
0012301
Unilateral renal agenesis
Absent kidney on one side
Missing one kidney
Single kidney

[ more ]

0000122
Ventricular septal defect
Hole in heart wall separating two lower heart chambers
0001629
Ventriculomegaly
0002119
Percent of people who have these symptoms is not available through HPO
Autosomal recessive inheritance
0000007
Congenital onset
Symptoms present at birth
0003577
Intellectual disability
Mental deficiency
Mental retardation
Mental retardation, nonspecific
Mental-retardation

[ more ]

0001249
Intrauterine growth retardation
Prenatal growth deficiency
Prenatal growth retardation

[ more ]

0001511

Organizations

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).

      Learn more

      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.