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NM_206937.2(LIG4):c.2449A>G (p.Thr817Ala) AND DNA ligase IV deficiency

Germline classification:
Uncertain significance (1 submission)
Last evaluated:
Dec 29, 2021
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:
RCV003079036.2

Allele description [Variation Report for NM_206937.2(LIG4):c.2449A>G (p.Thr817Ala)]

NM_206937.2(LIG4):c.2449A>G (p.Thr817Ala)

Gene:
LIG4:DNA ligase 4 [Gene - OMIM - HGNC]
Variant type:
single nucleotide variant
Cytogenetic location:
13q33.3
Genomic location:
Preferred name:
NM_206937.2(LIG4):c.2449A>G (p.Thr817Ala)
HGVS:
  • NC_000013.11:g.108208820T>C
  • NG_007396.1:g.11715A>G
  • NM_001098268.2:c.2449A>G
  • NM_001330595.2:c.2248A>G
  • NM_001352598.2:c.2449A>G
  • NM_001352599.2:c.2449A>G
  • NM_001352600.2:c.2449A>G
  • NM_001352601.2:c.2449A>G
  • NM_001352602.2:c.2449A>G
  • NM_001352603.1:c.2449A>G
  • NM_001352604.2:c.2485A>G
  • NM_001379095.1:c.2449A>G
  • NM_002312.3:c.2449A>G
  • NM_206937.2:c.2449A>GMANE SELECT
  • NP_001091738.1:p.Thr817Ala
  • NP_001317524.1:p.Thr750Ala
  • NP_001339527.1:p.Thr817Ala
  • NP_001339528.1:p.Thr817Ala
  • NP_001339529.1:p.Thr817Ala
  • NP_001339530.1:p.Thr817Ala
  • NP_001339531.1:p.Thr817Ala
  • NP_001339532.1:p.Thr817Ala
  • NP_001339533.1:p.Thr829Ala
  • NP_001366024.1:p.Thr817Ala
  • NP_002303.2:p.Thr817Ala
  • NP_996820.1:p.Thr817Ala
  • LRG_79t1:c.2449A>G
  • LRG_79:g.11715A>G
  • LRG_79p1:p.Thr817Ala
  • NC_000013.10:g.108861168T>C
Protein change:
T750A
Molecular consequence:
  • NM_001098268.2:c.2449A>G - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001330595.2:c.2248A>G - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001352598.2:c.2449A>G - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001352599.2:c.2449A>G - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001352600.2:c.2449A>G - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001352601.2:c.2449A>G - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001352602.2:c.2449A>G - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001352603.1:c.2449A>G - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001352604.2:c.2485A>G - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001379095.1:c.2449A>G - missense variant - [Sequence Ontology: SO:0001583]
  • NM_002312.3:c.2449A>G - missense variant - [Sequence Ontology: SO:0001583]
  • NM_206937.2:c.2449A>G - missense variant - [Sequence Ontology: SO:0001583]

Condition(s)

Name:
DNA ligase IV deficiency
Synonyms:
Lig4 syndrome
Identifiers:
MONDO: MONDO:0011686; MedGen: C1847827; Orphanet: 99812; OMIM: 606593

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Assertion and evidence details

Help
Submission AccessionSubmitterReview Status
(Assertion method)		Clinical Significance
(Last evaluated)		OriginMethodCitations
SCV003459854Labcorp Genetics (formerly Invitae), Labcorp
criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))		Uncertain significance
(Dec 29, 2021) 		germlineclinical testing

PubMed (1)
[See all records that cite this PMID]

Help

Summary from all submissions

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

Citations

PubMed

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, SCV003459854.1

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

Description

This sequence change replaces threonine, which is neutral and polar, with alanine, which is neutral and non-polar, at codon 817 of the LIG4 protein (p.Thr817Ala). This variant is present in population databases (rs779103198, gnomAD 0.002%). This variant has not been reported in the literature in individuals affected with LIG4-related conditions. Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Tolerated"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0". The alanine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. 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.

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

Last Updated: Sep 29, 2024