rs301276

Variant names:

• chr5-83251912-G-A
• rs301276
• NM_003401.5:c.746-6618G>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.746-6618G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.174 in 152,184 control chromosomes in the GnomAD database, including 2,885 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 0.17 (2885 hom., cov: 32)
• Consequence: XRCC4 NM_003401.5 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.104
• 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=-0.73).
• BA1: GnomAd4 highest subpopulation (NFE) allele frequency at 95% confidence interval = 0.248 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
XRCC4	NM_003401.5	c.746-6618G>A		intron_variant	Intron 6 of 7	ENST00000396027.9	NP_003392.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
XRCC4	ENST00000396027.9	c.746-6618G>A		intron_variant	Intron 6 of 7	5	NM_003401.5	ENSP00000379344.4

Frequencies

GnomAD3 genomes AF: 0.174 AC: 26533 AN: 152066 Hom.: 2883 Cov.: 32

Gnomad AFR AF: 0.0502

Gnomad AMI AF: 0.285

Gnomad AMR AF: 0.196

Gnomad ASJ AF: 0.228

Gnomad EAS AF: 0.0566

Gnomad SAS AF: 0.173

Gnomad FIN AF: 0.164

Gnomad MID AF: 0.203

Gnomad NFE AF: 0.252

Gnomad OTH AF: 0.179

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

GnomAD4 genome AF: 0.174 AC: 26544 AN: 152184 Hom.: 2885 Cov.: 32 AF XY: 0.170 AC XY: 12612 AN XY: 74388

African (AFR) AF: 0.0502 AC: 2087 AN: 41548

American (AMR) AF: 0.197 AC: 3008 AN: 15280

Ashkenazi Jewish (ASJ) AF: 0.228 AC: 789 AN: 3468

East Asian (EAS) AF: 0.0564 AC: 292 AN: 5180

South Asian (SAS) AF: 0.174 AC: 840 AN: 4822

European-Finnish (FIN) AF: 0.164 AC: 1735 AN: 10594

Middle Eastern (MID) AF: 0.207 AC: 61 AN: 294

European-Non Finnish (NFE) AF: 0.252 AC: 17101 AN: 67972

Other (OTH) AF: 0.176 AC: 372 AN: 2116

Alfa AF: 0.214 Hom.: 511

Bravo AF: 0.169

Asia WGS AF: 0.123 AC: 432 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.73
CADD	Benign	1.0
DANN	Benign	0.40
PhyloP100		-0.10
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: rs301276; hg19: chr5-82547731;