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NM_022168.4(IFIH1):c.1114C>G (p.Leu372Val) AND multiple conditions

Germline classification:
Uncertain significance (1 submission)
Last evaluated:
Nov 14, 2020
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:
RCV002005750.6

Allele description [Variation Report for NM_022168.4(IFIH1):c.1114C>G (p.Leu372Val)]

NM_022168.4(IFIH1):c.1114C>G (p.Leu372Val)

Gene:
IFIH1:interferon induced with helicase C domain 1 [Gene - OMIM - HGNC]
Variant type:
single nucleotide variant
Cytogenetic location:
2q24.2
Genomic location:
Preferred name:
NM_022168.4(IFIH1):c.1114C>G (p.Leu372Val)
HGVS:
  • NC_000002.12:g.162282558G>C
  • NG_011495.1:g.40972C>G
  • NM_022168.4:c.1114C>GMANE SELECT
  • NP_071451.2:p.Leu372Val
  • LRG_1235t1:c.1114C>G
  • LRG_1235:g.40972C>G
  • LRG_1235p1:p.Leu372Val
  • NC_000002.11:g.163139068G>C
Protein change:
L372V
Links:
dbSNP: rs587777576
NCBI 1000 Genomes Browser:
rs587777576
Molecular consequence:
  • NM_022168.4:c.1114C>G - missense variant - [Sequence Ontology: SO:0001583]

Condition(s)

Name:
Singleton-Merten syndrome 1 (SGMRT1)
Synonyms:
Widened medullary cavities of bone, aortic calcification, abnormal dentition, and muscular weakness; Syndrome of widened medullary cavities of the metacarpals and phalanges, aortic calcification and abnormal dentition
Identifiers:
MONDO: MONDO:0024535; MedGen: C4225427; Orphanet: 85191; OMIM: 182250
Name:
Aicardi-Goutieres syndrome 7 (AGS7)
Identifiers:
MONDO: MONDO:0014367; MedGen: C3888244; Orphanet: 51; OMIM: 615846

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Assertion and evidence details

Help
Submission AccessionSubmitterReview Status
(Assertion method)		Clinical Significance
(Last evaluated)		OriginMethodCitations
SCV002275671Labcorp Genetics (formerly Invitae), Labcorp
criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))		Uncertain significance
(Nov 14, 2020) 		germlineclinical testing

PubMed (2)
[See all records that cite these PMIDs]

Help

Summary from all submissions

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

Citations

PubMed

Aicardi-Goutières syndrome is caused by IFIH1 mutations.

Oda H, Nakagawa K, Abe J, Awaya T, Funabiki M, Hijikata A, Nishikomori R, Funatsuka M, Ohshima Y, Sugawara Y, Yasumi T, Kato H, Shirai T, Ohara O, Fujita T, Heike T.

Am J Hum Genet. 2014 Jul 3;95(1):121-5. doi: 10.1016/j.ajhg.2014.06.007.

PubMed [citation]
PMID:
24995871
PMCID:
PMC4085581

Sherloc: a comprehensive refinement of the ACMG-AMP variant classification criteria.

Nykamp K, Anderson M, Powers M, Garcia J, Herrera B, Ho YY, Kobayashi Y, Patil N, Thusberg J, Westbrook M; Invitae Clinical Genomics Group., Topper S.

Genet Med. 2017 Oct;19(10):1105-1117. doi: 10.1038/gim.2017.37. Epub 2017 May 11. Erratum in: Genet Med. 2020 Jan;22(1):240. doi: 10.1038/s41436-019-0624-9.

PubMed [citation]
PMID:
28492532
PMCID:
PMC5632818

Details of each submission

From Labcorp Genetics (formerly Invitae), Labcorp, SCV002275671.3

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedclinical testing PubMed (2)

Description

In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. This variant disrupts the p.Leu372 amino acid residue in IFIH1. Other variant(s) that disrupt this residue have been determined to be pathogenic (PMID: 24995871). This suggests that this residue is clinically significant, and that variants that disrupt this residue are likely to be disease-causing. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may create or strengthen a splice site, but this prediction has not been confirmed by published transcriptional studies. Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated, but these predictions have not been confirmed by published functional studies and their clinical significance is uncertain. This variant has not been reported in the literature in individuals with IFIH1-related conditions. This variant is not present in population databases (ExAC no frequency). This sequence change replaces leucine with valine at codon 372 of the IFIH1 protein (p.Leu372Val). The leucine residue is moderately conserved and there is a small physicochemical difference between leucine and valine.

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

Last Updated: Sep 29, 2024