Expression
Note
This class is imported from VRS. Its full documentation can be found in the latest VRS specification at vrs.ga4gh.org.
Trial Use
May change in future releases. See Maturity Model.
Computational Definition
Representation of a variation by a specified nomenclature or syntax for a Variation object. Common examples of expressions for the description of molecular variation include the HGVS and ISCN nomenclatures.
Information Model
Some Expression attributes are inherited from Element.
Field |
Flags |
Type |
Limits |
Description |
|---|---|---|---|---|
id |
string |
0..1 |
The ‘logical’ identifier of the data element in the system of record, e.g. a UUID. This ‘id’ is unique within a given system, but may or may not be globally unique outside the system. It is used within a system to reference an object from another. |
|
extensions |
⋮ | 0..m |
A list of extensions to the Entity, that allow for capture of information not directly supported by elements defined in the model. |
|
syntax |
string |
1..1 |
The syntax used to describe the variation. The value should be one of the supported syntaxes. |
|
value |
string |
1..1 |
The expression of the variation in the specified syntax. The value should be a valid expression in the specified syntax. |
|
syntax_version |
string |
0..1 |
The version of the syntax used to describe the variation. This is particularly important for HGVS expressions, as the syntax has evolved over time. |
Inherits: Element
Used in: Adjacency, Allele, CisPhasedBlock, Copy Number Change, Copy Number Count, DerivativeMolecule, MolecularVariation, RelativeAllele, SystemicVariation, Terminus, Variation