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Hyper ORN - Girate atrophy of the retina - Condition Details

Girate atrophy of the retina (also known as gyrate atrophy of the choroid and retina) is an inherited disorder characterized by progressive vision loss. People with this disorder have ongoing retinal atrophy, myopia, night blindness, loss of peripheral vision, and cataracts. Girate atrophy of the retina is caused by mutations in the OAT gene; it has an autosomal recessive pattern of inheritance.

Names and Codes

Condition:1Girate atrophy of the retina
Abbreviation:1Hyper ORN
SACHDNC Category:2Other
SNOMED CT Code:3
314467007Gyrate atrophy
UMLS CUI:4C0018425
ICD-9-CM Code:5
270.6Disorders of urea cycle metabolism
ICD-10-CM Code:6
H31.23Gyrate atrophy, choroid

Affected Protein Names and Codes

Enzyme Commission Number:7
2.6.1.13External Web Site PolicyOrnithine aminotransferase
UniProt Number:8
P04181External Web Site PolicyOrnithine aminotransferase, mitochondrial

Analytes or Measurements

These measurements are associated with the condition:

LOINC Long Common Name9Analyte
Short Name10
LOINC
Number11
Units12
Asparagine+Ornithine [Moles/volume] in Dried blood spotASN + ORN53155-8umol/L
Asparagine+Ornithine/Phenylalanine [Molar ratio] in Dried blood spot[ASN + ORN] / PHE53396-8{ratio}
Asparagine+Ornithine/Serine [Molar ratio] in Dried blood spot[ASN + ORN] / SER53395-0{ratio}

More Information

Additional information is available from Genetics Home Reference13 and from the Online Mendelian Inheritance in Man (OMIM®)14:

Legend

1

Condition Name and Abbreviation — curated by the NLM and selected from among the names used by the Secretary's Advisory Committee on Heritable Disorders in Newborns and Children (SACHDNC), National Newborn Screening Information System (NNSIS), the American College of Medical Genetics (ACMG), the HHS Office of the National Coordinator for Health Information Technology (ONC)/American Health Information Community (AHIC) Personalized Health Care Work Group, and input from the newborn screening community.

2

SACHDNC Category — based on the U.S. Department of Health and Human Services (HHS) Recommended Uniform Screening Panel of the Secretary's Advisory Committee on Heritable Disorders in Newborns and Children (SACHDNC). Conditions designated as "core" by SACHDNC should be included in every newborn screening program, and "secondary" conditions are some of the disorders that may be detected during screening for a core disorder. Conditions classified as "other" are those that are screened for by some states but are not part of the Recommended Uniform Screening Panel.

3

SNOMED CT® CodeSystematized Nomenclature of Medicine — Clinical Terms code is assigned by the International Health Terminology Standards Development Organisation (IHTSDO). SNOMED CT is a concept-oriented clinical terminology that has been designated as a U.S. standard for electronic health information exchange. The Newborn Screening Coding and Terminology Guide uses some codes from the US Extension to SNOMED CT.

4

UMLS CUI — a concept unique identifier (CUI) assigned to every concept in the Unified Medical Language System (UMLS®).

5

ICD-9-CM CodeInternational Classification of Diseases, Ninth Revision, Clinical Modification code is assigned to diagnoses associated with hospital utilization in the U.S. It is a current US standard for use in administrative healthcare transactions. Although ICD-9-CM codes are fairly specific, in certain cases, the same ICD-9-CM code might apply to several disorders in the same group (e.g. amino acid disorders).

6

ICD-10-CM CodeInternational Classification of Diseases, Tenth Revision, Clinical Modification code. Although ICD-10-CM codes are fairly specific, in certain cases, the same ICD-10-CM code might apply to multiple related disorders.

7

Enzyme Commission (EC) Number — a unique identifier for the affected enzyme (if the affected protein is an enzyme); the EC number is assigned by the Recommendations of the Nomenclature Committee of the International Union of Biochemistry and Molecular Biology on the Nomenclature and Classification of Enzymes by the Reactions they CatalyseExternal Web Site Policy.

8

UniProt Number — a unique identifier assigned to all proteins, including enzymes, hemoglobin subunits, and immunoglobulin chains. The UniProt database is maintained by the Universal Protein ResourceExternal Web Site Policy, an international collaboration.

9

LOINC Long Common Name — derived by the Logical Observation Identifiers Names and CodesExternal Web Site Policy (LOINC®) Committee from the measurement's formal name by using conventional names for analytes and procedures. The long common name eliminates the parts of the formal name that are not needed to distinguish the test from related tests.

10

Analyte Short Name — an abbreviation for the analyte.

11

LOINC Number — the unique and permanent code assigned by the Logical Observation Identifiers Names and CodesExternal Web Site Policy (LOINC®) Committee to identify the test measurement. LOINC codes are unique for different test methods and different units of reporting to enable interoperability and comparison of results from different labs. LOINC is a U.S. government standard for electronic health information exchange of laboratory tests and other measurements in Interoperability Specifications produced by the Healthcare Information Technology Standards Panel (HITSP).

12

Units — what is being counted or measured, using the Unified Code for Units of MeasureExternal Web Site Policy (UCUM). Ratios whose units fully cancel each other are indicated by {Ratio}. UCUM is the US standard for reporting units in laboratory messages. Results that are not quantitative have either a link to the specific LOINC answer list for that analyte or appropriate text (such as "Pos or Neg" or "Specific alleles").

13

Genetics Home Reference — the National Library of Medicine's Web site for consumer-friendly information about genetic conditions and the genes or chromosomes related to those conditions. Visit Genetics Home Reference at http://ghr.nlm.nih.gov/.

14

OMIMOnline Mendelian Inheritance in Man®External Web Site Policy is a comprehensive resource about human genes and genetic diseases. It focuses primarily on the relationship between genotype and phenotype. It is currently maintained by Johns Hopkins University.

Record created: December 19, 2008
Record last updated: April 20, 2011