Variant chr8-89947815-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBA1

The ENST00000265433.8(NBN):c.1914+9C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00328 in 1,521,356 control chromosomes in the GnomAD database, including 122 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.018 ( 77 hom., cov: 32)

Exomes 𝑓: 0.0017 ( 45 hom. )

Consequence

NBN
ENST00000265433.8 intron

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:14

Conservation

PhyloP100: 0.0970

Variant links:

Genes affected

NBN (HGNC:7652): (nibrin) Mutations in this gene are associated with Nijmegen breakage syndrome, an autosomal recessive chromosomal instability syndrome characterized by microcephaly, growth retardation, immunodeficiency, and cancer predisposition. The encoded protein is a member of the MRE11/RAD50 double-strand break repair complex which consists of 5 proteins. This gene product is thought to be involved in DNA double-strand break repair and DNA damage-induced checkpoint activation. [provided by RefSeq, Jul 2008]

NBN links:

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -20 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.9).

BP6

Variant 8-89947815-G-A is Benign according to our data. Variant chr8-89947815-G-A is described in ClinVar as [Benign]. Clinvar id is 132686.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr8-89947815-G-A is described in Lovd as [Benign].

BA1

GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0576 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
NBN	NM_002485.5 linkuse as main transcript	c.1914+9C>T		intron_variant		ENST00000265433.8	NP_002476.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
NBN	ENST00000265433.8 linkuse as main transcript	c.1914+9C>T		intron_variant		1	NM_002485.5	ENSP00000265433	P1

Frequencies

GnomAD3 genomes

AF:

0.0174

AC:

2648

AN:

151938

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0592

Gnomad AMI

AF:

0.00330

Gnomad AMR

AF:

0.0100

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000414

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.000250

Gnomad OTH

AF:

0.0100

GnomAD3 exomes

AF:

0.00388

AC:

861

AN:

221874

Hom.:

AF XY:

0.00273

AC XY:

327

AN XY:

119806

show subpopulations

Gnomad AFR exome

AF:

0.0554

Gnomad AMR exome

AF:

0.00243

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000581

Gnomad SAS exome

AF:

0.000288

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000125

Gnomad OTH exome

AF:

0.00290

GnomAD4 exome

AF:

0.00169

AC:

2317

AN:

1369300

Hom.:

Cov.:

AF XY:

0.00148

AC XY:

1009

AN XY:

683760

show subpopulations

Gnomad4 AFR exome

AF:

0.0591

Gnomad4 AMR exome

AF:

0.00344

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000244

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000744

Gnomad4 OTH exome

AF:

0.00388

GnomAD4 genome

AF:

0.0176

AC:

2669

AN:

152056

Hom.:

Cov.:

AF XY:

0.0172

AC XY:

1282

AN XY:

74362

show subpopulations

Gnomad4 AFR

AF:

0.0596

Gnomad4 AMR

AF:

0.0100

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000415

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000250

Gnomad4 OTH

AF:

0.00993

Alfa

AF:

0.00441

Hom.:

Bravo

AF:

0.0194

Asia WGS

AF:

0.00751

AC:

AN:

3478

ClinVar

Significance: Benign

Submissions summary: Benign:14

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:4

Benign, no assertion criteria provided	clinical testing	Genome Diagnostics Laboratory, Amsterdam University Medical Center	-	- -
Benign, criteria provided, single submitter	clinical testing	PreventionGenetics, part of Exact Sciences	Nov 22, 2016	- -
Benign, no assertion criteria provided	clinical testing	Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center	-	- -
Benign, criteria provided, single submitter	clinical testing	Quest Diagnostics Nichols Institute San Juan Capistrano	Oct 09, 2020	- -

Microcephaly, normal intelligence and immunodeficiency

Benign:3

Benign, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Jan 13, 2018	This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -
Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 31, 2024	- -
Benign, no assertion criteria provided	clinical testing	Natera, Inc.	Sep 16, 2020	- -

not provided

Benign:2

Benign, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	Nov 28, 2022	- -
Benign, criteria provided, single submitter	clinical testing	GeneDx	Mar 03, 2015	- -

Hereditary cancer-predisposing syndrome

Benign:2

Benign, criteria provided, single submitter	clinical testing	Color Diagnostics, LLC DBA Color Health	Apr 06, 2015	- -
Benign, criteria provided, single submitter	clinical testing	Ambry Genetics	Aug 07, 2012	This alteration is classified as benign based on a combination of the following: population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Acute lymphoid leukemia

Benign:1

Benign, criteria provided, single submitter

clinical testing

KCCC/NGS Laboratory, Kuwait Cancer Control Center

Jul 07, 2023

- -

Malignant tumor of breast

Benign:1

Benign, no assertion criteria provided

clinical testing

Department of Pathology and Laboratory Medicine, Sinai Health System

The NBN c.1914+9C>T variant was not identified in the literature nor was it identified in the Cosmic, LOVD 3.0, and Zhejiang Colon Cancer Database. The variant was identified in dbSNP (ID: rs13312938) â€šÃ„ÃºWith other alleleâ€šÃ„Ã¹, ClinVar (benign by Invitae and Ambry Genetics, and likely benign by Illumina), Clinvitae (2x), and in control databases in 1353 (42 homozygous) of 246988 chromosomes at a frequency of 0.005 increasing the likelihood this could be a low frequency benign variant (Genome Aggregation Consortium Feb 27, 2017), being identified in the following populations: African in 1230 (41 homozygous) of 21232 chromosomes (frequency: 0.06), Other in 19 of 5832 chromosomes (frequency: 003), Latino in 82 of 32908 chromosomes (frequency: 0.002), European Non-Finnish in 13 of 108340 chromosomes (frequency: 0.0001), East Asian in 1 of 17718 chromosomes (frequency: 0.00006), South Asian in 8 (1 homozygous) of 27888 chromosomes (frequency: 0.0003). The variant occurs outside of the splicing consensus sequence and in silico or computational prediction software programs (SpliceSiteFinder, MaxEntScan, NNSPLICE, GeneSplicer, HumanSpliceFinder) do not predict a difference in splicing. In summary, based on the above information this variant meets our laboratory's criteria to be classified as benign. -

Hereditary breast ovarian cancer syndrome

Benign:1

Benign, criteria provided, single submitter

clinical testing

National Health Laboratory Service, Universitas Academic Hospital and University of the Free State

Apr 19, 2022

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.90

CADD

Benign

2.6

DANN

Benign

0.71

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.050

Details are displayed if max score is > 0.2

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

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over