19-48115685-G-A
Variant summary
Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2
The NM_000234.3(LIG1):c.2724C>T(p.Gly908=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000616 in 1,461,786 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).
Frequency
Genomes: not found (cov: 32)
Exomes 𝑓: 0.0000062 ( 0 hom. )
Consequence
LIG1
NM_000234.3 synonymous
NM_000234.3 synonymous
Scores
2
Clinical Significance
Conservation
PhyloP100: -0.111
Genes affected
LIG1 (HGNC:6598): (DNA ligase 1) This gene encodes a member of the ATP-dependent DNA ligase protein family. The encoded protein functions in DNA replication, recombination, and the base excision repair process. Mutations in this gene that lead to DNA ligase I deficiency result in immunodeficiency and increased sensitivity to DNA-damaging agents. Disruption of this gene may also be associated with a variety of cancers. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jan 2014]
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ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 2 ACMG points.
PM2
?
Very rare variant in population databases, with high coverage;
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
LIG1 | NM_000234.3 | c.2724C>T | p.Gly908= | synonymous_variant | 28/28 | ENST00000263274.12 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
LIG1 | ENST00000263274.12 | c.2724C>T | p.Gly908= | synonymous_variant | 28/28 | 1 | NM_000234.3 | P4 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD3 genomes
?
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32
GnomAD3 exomes AF: 0.00000398 AC: 1AN: 251454Hom.: 0 AF XY: 0.00000736 AC XY: 1AN XY: 135906
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GnomAD4 exome AF: 0.00000616 AC: 9AN: 1461786Hom.: 0 Cov.: 30 AF XY: 0.00000688 AC XY: 5AN XY: 727206
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GnomAD4 genome ? Cov.: 32
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ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
not provided Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Mar 20, 2023 | 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. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may create or strengthen a splice site. This variant has not been reported in the literature in individuals affected with LIG1-related conditions. This variant is present in population databases (rs777120650, gnomAD 0.006%). This sequence change affects codon 908 of the LIG1 mRNA. It is a 'silent' change, meaning that it does not change the encoded amino acid sequence of the LIG1 protein. - |
Computational scores
Source:
Name
Calibrated prediction
Score
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BayesDel_noAF
Benign
Cadd
Benign
Dann
Benign
RBP_binding_hub_radar
RBP_regulation_power_radar
Splicing
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SpliceAI score (max)
Details are displayed if max score is > 0.2
DS_DG_spliceai
Position offset: 2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at