2-216116756-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_021141.4(XRCC5):​c.233C>T​(p.Thr78Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,882 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)
Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

XRCC5
NM_021141.4 missense

Scores

13
6

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.52
Variant links:
Genes affected
XRCC5 (HGNC:12833): (X-ray repair cross complementing 5) The protein encoded by this gene is the 80-kilodalton subunit of the Ku heterodimer protein which is also known as ATP-dependant DNA helicase II or DNA repair protein XRCC5. Ku is the DNA-binding component of the DNA-dependent protein kinase, and it functions together with the DNA ligase IV-XRCC4 complex in the repair of DNA double-strand break by non-homologous end joining and the completion of V(D)J recombination events. This gene functionally complements Chinese hamster xrs-6, a mutant defective in DNA double-strand break repair and in ability to undergo V(D)J recombination. A rare microsatellite polymorphism in this gene is associated with cancer in patients of varying radiosensitivity. [provided by RefSeq, Jul 2008]

Genome browser will be placed here

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
XRCC5NM_021141.4 linkuse as main transcriptc.233C>T p.Thr78Ile missense_variant 3/21 ENST00000392132.7

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
XRCC5ENST00000392132.7 linkuse as main transcriptc.233C>T p.Thr78Ile missense_variant 3/211 NM_021141.4 P1

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD4 exome
AF:
6.84e-7
AC:
1
AN:
1461882
Hom.:
0
Cov.:
31
AF XY:
0.00
AC XY:
0
AN XY:
727240
show subpopulations
Gnomad4 AFR exome
AF:
0.0000299
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
32

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

not specified Uncertain:1
Uncertain significance, criteria provided, single submitterclinical testingAmbry GeneticsJun 03, 2022The c.233C>T (p.T78I) alteration is located in exon 3 (coding exon 3) of the XRCC5 gene. This alteration results from a C to T substitution at nucleotide position 233, causing the threonine (T) at amino acid position 78 to be replaced by an isoleucine (I). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.20
BayesDel_addAF
Uncertain
0.051
T
BayesDel_noAF
Benign
-0.17
CADD
Uncertain
24
DANN
Uncertain
1.0
DEOGEN2
Uncertain
0.45
T;T;T
Eigen
Uncertain
0.60
Eigen_PC
Uncertain
0.60
FATHMM_MKL
Uncertain
0.81
D
LIST_S2
Uncertain
0.89
.;D;D
M_CAP
Benign
0.012
T
MetaRNN
Uncertain
0.74
D;D;D
MetaSVM
Benign
-0.97
T
MutationAssessor
Uncertain
2.8
M;M;.
MutationTaster
Benign
1.0
D;D
PrimateAI
Uncertain
0.57
T
PROVEAN
Uncertain
-3.8
D;D;D
REVEL
Benign
0.25
Sift
Uncertain
0.0070
D;D;D
Sift4G
Uncertain
0.0050
D;D;D
Polyphen
1.0
D;D;.
Vest4
0.58
MutPred
0.78
Gain of sheet (P = 0.0827);Gain of sheet (P = 0.0827);.;
MVP
0.19
MPC
1.8
ClinPred
0.99
D
GERP RS
4.9
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.1
Varity_R
0.57
gMVP
0.66

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.0
Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr2-216981479; API