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The Sequence Types and Features Ontology (SO) is downloaded weekly from the SourceForge CVS repository at For more information about this ontology, see the Sequence Ontology Home Page at

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Accession:SO:0002220 term browser browse the term
Definition:A sequence variant in which the function of a gene product is unknown with respect to a reference.
Comment:Added after request from Lea Starita, from the NCBI Feb 2019.
Synonyms:exact_synonym: function uncertain variant

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Term paths to the root
Path 1
Term Annotations click to browse term
  SO ontology 0
    sequence_variant 0
      functional_effect_variant 0
        function_uncertain_variant 0
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