NM_002485.5:c.628G>C

Variant names:

• chr8-89971247-C-G
• rs61754796
• NM_002485.5:c.628G>C

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_002485.5(NBN):​c.628G>C​(p.Val210Leu) 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. 17/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V210F) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 33)
• Consequence: NBN NM_002485.5 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: -0.408
• Publications: 25 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: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.028203249).

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.628G>C	p.Val210Leu	missense	Exon 6 of 16	NP_002476.2
	NBN	NM_001024688.3		c.382G>C	p.Val128Leu	missense	Exon 7 of 17	NP_001019859.1	A0A0C4DG07
	NBN	NM_001440379.1		c.382G>C	p.Val128Leu	missense	Exon 6 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.628G>C	p.Val210Leu	missense	Exon 6 of 16	ENSP00000265433.4	O60934
	NBN	ENST00000697309.1		c.628G>C	p.Val210Leu	missense	Exon 6 of 15	ENSP00000513244.1	A0A8V8TKY5
	NBN	ENST00000697293.1		c.628G>C	p.Val210Leu	missense	Exon 6 of 17	ENSP00000513230.1	A0A8V8TM80

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 33

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	1	-	Hereditary cancer-predisposing syndrome (1)
-	1	-	Microcephaly, normal intelligence and immunodeficiency (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.12
BayesDel_addAF	Benign	-0.16	T
BayesDel_noAF	Benign	-0.47
CADD	Benign	4.3
DANN	Benign	0.83
DEOGEN2	Benign	0.058	T
Eigen	Benign	-1.1
Eigen_PC	Benign	-0.98
FATHMM_MKL	Benign	0.030	N
LIST_S2	Benign	0.77	T
M_CAP	Benign	0.018	T
MetaRNN	Benign	0.028	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	-0.46	N
PhyloP100		-0.41
PrimateAI	Benign	0.27	T
PROVEAN	Benign	-0.61	N
REVEL	Benign	0.041
Sift	Benign	0.48	T
Sift4G	Benign	0.71	T
Polyphen		0.0	B
Vest4		0.059
MutPred		0.24		Gain of catalytic residue at V210 (P = 0.0407)
MVP		0.71
MPC		0.066
ClinPred		0.14	T
GERP RS		-1.9
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.031
gMVP		0.41
Mutation Taster		=82/18	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: rs61754796; hg19: chr8-90983475;