Expression

Note

This data class is at a trial use maturity level and may change in future releases. Maturity levels are described in the GKS 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	⋮	Extension	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.