rs1120476

Variant names:

• chr5-83126824-G-A
• rs1120476
• NM_003401.5:c.315+15621G>A

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_003401.5(XRCC4):​c.315+15621G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.464 in 152,046 control chromosomes in the GnomAD database, including 17,303 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 0.46 (17303 hom., cov: 33)
• Consequence: XRCC4 NM_003401.5 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.241
• Publications: 5 publications found

Genes affected

XRCC4 (HGNC:12831): (X-ray repair cross complementing 4) The protein encoded by this gene functions together with DNA ligase IV and the DNA-dependent protein kinase in the repair of DNA double-strand breaks. This protein plays a role in both non-homologous end joining and the completion of V(D)J recombination. Mutations in this gene can cause short stature, microcephaly, and endocrine dysfunction (SSMED). Alternate transcript variants such as NM_022406 are unlikely to be expressed in some individuals due to a polymorphism (rs1805377) in the last splice acceptor site. [provided by RefSeq, Oct 2019]

XRCC4 Gene-Disease associations (from GenCC):

• short stature, microcephaly, and endocrine dysfunction

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P, Laboratory for Molecular Medicine
• microcephalic primordial dwarfism-insulin resistance syndrome

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• hereditary nonpolyposis colon cancer

  Inheritance: AD Classification: LIMITED Submitted by: ClinGen

ACMG classification

Our verdict: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.88).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.583 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
XRCC4	NM_003401.5	c.315+15621G>A		intron_variant	Intron 3 of 7	ENST00000396027.9	NP_003392.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
XRCC4	ENST00000396027.9	c.315+15621G>A		intron_variant	Intron 3 of 7	5	NM_003401.5	ENSP00000379344.4

Frequencies

GnomAD3 genomes AF: 0.465 AC: 70576 AN: 151928 Hom.: 17286 Cov.: 33

Gnomad AFR AF: 0.589

Gnomad AMI AF: 0.522

Gnomad AMR AF: 0.326

Gnomad ASJ AF: 0.370

Gnomad EAS AF: 0.138

Gnomad SAS AF: 0.492

Gnomad FIN AF: 0.449

Gnomad MID AF: 0.389

Gnomad NFE AF: 0.450

Gnomad OTH AF: 0.437

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.464 AC: 70623 AN: 152046 Hom.: 17303 Cov.: 33 AF XY: 0.462 AC XY: 34334 AN XY: 74338

African (AFR) AF: 0.589 AC: 24457 AN: 41498

American (AMR) AF: 0.325 AC: 4964 AN: 15266

Ashkenazi Jewish (ASJ) AF: 0.370 AC: 1281 AN: 3462

East Asian (EAS) AF: 0.137 AC: 708 AN: 5160

South Asian (SAS) AF: 0.491 AC: 2369 AN: 4826

European-Finnish (FIN) AF: 0.449 AC: 4745 AN: 10566

Middle Eastern (MID) AF: 0.374 AC: 110 AN: 294

European-Non Finnish (NFE) AF: 0.450 AC: 30592 AN: 67956

Other (OTH) AF: 0.438 AC: 924 AN: 2112

Alfa AF: 0.451 Hom.: 19793

Bravo AF: 0.453

Asia WGS AF: 0.328 AC: 1141 AN: 3476

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.88
CADD	Benign	5.3
DANN	Benign	0.63
PhyloP100		0.24
Mutation Taster		=100/0	polymorphism (auto)

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

Other links and lift over

dbSNP: rs1120476; hg19: chr5-82422643;