rs1263649
Positions:
Variant summary
Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_StrongBA1
The ENST00000611116.2(TRAC):c.274-845A>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.834 in 150,254 control chromosomes in the GnomAD database, including 53,115 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.
Frequency
Genomes: 𝑓 0.83 ( 53115 hom., cov: 25)
Consequence
TRAC
ENST00000611116.2 intron
ENST00000611116.2 intron
Scores
1
Clinical Significance
Not reported in ClinVar
Conservation
PhyloP100: -0.809
Genes affected
TRAC (HGNC:12029): (T cell receptor alpha constant) T cell receptors recognize foreign antigens which have been processed as small peptides and bound to major histocompatibility complex (MHC) molecules at the surface of antigen presenting cells (APC). Each T cell receptor is a dimer consisting of one alpha and one beta chain or one delta and one gamma chain. In a single cell, the T cell receptor loci are rearranged and expressed in the order delta, gamma, beta, and alpha. If both delta and gamma rearrangements produce functional chains, the cell expresses delta and gamma. If not, the cell proceeds to rearrange the beta and alpha loci. This region represents the germline organization of the T cell receptor alpha and delta loci. Both the alpha and delta loci include V (variable), J (joining), and C (constant) segments and the delta locus also includes diversity (D) segments. The delta locus is situated within the alpha locus, between the alpha V and J segments. During T cell development, the delta chain is synthesized by a recombination event at the DNA level joining a D segment with a J segment; a V segment is then joined to the D-J gene. The alpha chain is synthesized by recombination joining a single V segment with a J segment. For both chains, the C segment is later joined by splicing at the RNA level. Recombination of many different V segments with several J segments provides a wide range of antigen recognition. Additional diversity is attained by junctional diversity, resulting from the random additional of nucleotides by terminal deoxynucleotidyltransferase. Five variable segments can be used in either alpha or delta chains and are described by TRAV/DV symbols. Several V and J segments of the alpha locus are known to be incapable of encoding a protein and are considered pseudogenes. [provided by RefSeq, Aug 2016]
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ACMG classification
Classification made for transcript
Verdict is Benign. Variant got -12 ACMG points.
BP4
?
Computational evidence support a benign effect (BayesDel_noAF=-0.92).
BA1
?
GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.937 is higher than 0.05.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
TRAC | ENST00000611116.2 | c.274-845A>G | intron_variant | P1 |
Frequencies
GnomAD3 genomes ? AF: 0.834 AC: 125178AN: 150142Hom.: 53050 Cov.: 25
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We have no GnomAD4 exomes data on this position. Probably position not covered by the project.
GnomAD4 genome ? AF: 0.834 AC: 125302AN: 150254Hom.: 53115 Cov.: 25 AF XY: 0.824 AC XY: 60332AN XY: 73216
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ClinVar
Not reported inComputational scores
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Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
CADD
Benign
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at