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NM_006772.3(SYNGAP1):c.3661C>T (p.Arg1221Trp) AND Inborn genetic diseases

Germline classification:
Uncertain significance (1 submission)
Last evaluated:
Dec 7, 2018
Review status:
1 star out of maximum of 4 stars
criteria provided, single submitter
Somatic classification
of clinical impact:
None
Review status:
(0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided
Somatic classification
of oncogenicity:
None
Review status:
(0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided
Record status:
current
Accession:
RCV002456538.2

Allele description [Variation Report for NM_006772.3(SYNGAP1):c.3661C>T (p.Arg1221Trp)]

NM_006772.3(SYNGAP1):c.3661C>T (p.Arg1221Trp)

Genes:
SYNGAP1-AS1:SYNGAP1 antisense RNA 1 [Gene - HGNC]
SYNGAP1:synaptic Ras GTPase activating protein 1 [Gene - OMIM - HGNC]
Variant type:
single nucleotide variant
Cytogenetic location:
6p21.32
Genomic location:
Preferred name:
NM_006772.3(SYNGAP1):c.3661C>T (p.Arg1221Trp)
HGVS:
  • NC_000006.12:g.33446653C>T
  • NG_016137.2:g.31584C>T
  • NM_001130066.2:c.3613C>T
  • NM_006772.3:c.3661C>TMANE SELECT
  • NP_001123538.1:p.Arg1205Trp
  • NP_006763.2:p.Arg1221Trp
  • LRG_1193t1:c.3661C>T
  • LRG_1193:g.31584C>T
  • LRG_1193p1:p.Arg1221Trp
  • NC_000006.11:g.33414430C>T
  • NM_006772.2:c.3661C>T
Protein change:
R1205W
Links:
dbSNP: rs2151199464
NCBI 1000 Genomes Browser:
rs2151199464
Molecular consequence:
  • NM_001130066.2:c.3613C>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_006772.3:c.3661C>T - missense variant - [Sequence Ontology: SO:0001583]

Condition(s)

Name:
Inborn genetic diseases
Identifiers:
MeSH: D030342; MedGen: C0950123

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Assertion and evidence details

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Submission AccessionSubmitterReview Status
(Assertion method)		Clinical Significance
(Last evaluated)		OriginMethodCitations
SCV002617663Ambry Genetics
criteria provided, single submitter

(Ambry Variant Classification Scheme 2023)		Uncertain significance
(Dec 7, 2018) 		germlineclinical testing

Citation Link

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Summary from all submissions

EthnicityOriginAffectedIndividualsFamiliesChromosomes testedNumber TestedFamily historyMethod
not providedgermlineunknownnot providednot providednot providednot providednot providedclinical testing

Details of each submission

From Ambry Genetics, SCV002617663.2

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedclinical testingnot provided

Description

The p.R1221W variant (also known as c.3661C>T), located in coding exon 17 of the SYNGAP1 gene, results from a C to T substitution at nucleotide position 3661. The arginine at codon 1221 is replaced by tryptophan, an amino acid with dissimilar properties. This amino acid position is well conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear.

#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineunknownnot providednot providednot providednot providednot providednot providednot provided

Last Updated: Sep 29, 2024