chr8-89953337-C-A

Variant names:

• chr8-89953337-C-A
• rs1554558267
• NM_002485.5:c.1752G>T

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_002485.5(NBN):​c.1752G>T​(p.Glu584Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another nucleotide change resulting in the same amino acid substitution has been previously reported as Uncertain significance in ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. E584Q) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: NBN NM_002485.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.499
• Publications: 0 publications found

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 Gene-Disease associations (from GenCC):

• Nijmegen breakage syndrome

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Myriad Women’s Health, G2P, Orphanet, ClinGen
• rhabdomyosarcoma

  Inheritance: AR Classification: MODERATE Submitted by: Genomics England PanelApp
• idiopathic aplastic anemia

  Inheritance: AD Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)
• prostate cancer

  Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics
• hereditary breast carcinoma

  Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.086366296).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002485.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NBN	NM_002485.5	MANE Select	c.1752G>T	p.Glu584Asp	missense	Exon 11 of 16	NP_002476.2
	NBN	NM_001024688.3		c.1506G>T	p.Glu502Asp	missense	Exon 12 of 17	NP_001019859.1	A0A0C4DG07
	NBN	NM_001440379.1		c.1506G>T	p.Glu502Asp	missense	Exon 11 of 16	NP_001427308.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NBN	ENST00000265433.8	TSL:1 MANE Select	c.1752G>T	p.Glu584Asp	missense	Exon 11 of 16	ENSP00000265433.4	O60934
	NBN	ENST00000697309.1		c.1752G>T	p.Glu584Asp	missense	Exon 11 of 15	ENSP00000513244.1	A0A8V8TKY5
	NBN	ENST00000697293.1		c.1752G>T	p.Glu584Asp	missense	Exon 11 of 17	ENSP00000513230.1	A0A8V8TM80

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	Hereditary cancer-predisposing syndrome (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.12
BayesDel_addAF	Benign	-0.22	T
BayesDel_noAF	Benign	-0.55
CADD	Benign	10
DANN	Uncertain	1.0
DEOGEN2	Benign	0.31	T
Eigen	Benign	-0.43
Eigen_PC	Benign	-0.54
FATHMM_MKL	Benign	0.030	N
LIST_S2	Benign	0.76	T
M_CAP	Benign	0.013	T
MetaRNN	Benign	0.086	T
MetaSVM	Benign	-0.98	T
MutationAssessor	Uncertain	2.0	M
PhyloP100		-0.50
PrimateAI	Benign	0.34	T
PROVEAN	Benign	-0.84	N
REVEL	Benign	0.061
Sift	Benign	0.11	T
Sift4G	Benign	0.24	T
Polyphen		0.98	D
Vest4		0.11
MutPred		0.20		Loss of methylation at K579 (P = 0.1264)
MVP		0.77
MPC		0.070
ClinPred		0.51	D
GERP RS		-0.31
PromoterAI		0.021	Neutral
Varity_R		0.049
gMVP		0.067
Mutation Taster		=96/4	polymorphism

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: rs1554558267; hg19: chr8-90965565;