8-89925284-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001126111.3(OSGIN2):c.1402G>A(p.Asp468Asn) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,826 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: OSGIN2 NM_001126111.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.68

Genes affected

OSGIN2 (HGNC:1355): (oxidative stress induced growth inhibitor family member 2) Predicted to enable growth factor activity. Predicted to be involved in negative regulation of cell growth. [provided by Alliance of Genome Resources, Apr 2022]

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.10625383).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
OSGIN2	NM_001126111.3	c.1402G>A	p.Asp468Asn	missense_variant	6/6	ENST00000451899.7
OSGIN2	NM_004337.2	c.1270G>A	p.Asp424Asn	missense_variant	6/6
OSGIN2	XM_011517287.4	c.1270G>A	p.Asp424Asn	missense_variant	6/6
OSGIN2	XM_011517288.4	c.871G>A	p.Asp291Asn	missense_variant	3/3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
OSGIN2	ENST00000451899.7	c.1402G>A	p.Asp468Asn	missense_variant	6/6	1	NM_001126111.3
OSGIN2	ENST00000297438.6	c.1270G>A	p.Asp424Asn	missense_variant	6/6	1		P1
OSGIN2	ENST00000647849.1	c.1270G>A	p.Asp424Asn	missense_variant	6/6			P1
NBN	ENST00000697292.1	c.*96C>T		3_prime_UTR_variant	17/17			P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.00000398 AC: 1 AN: 251116 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 135688

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000882

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461826 Hom.: 0 Cov.: 32 AF XY: 0.00000138 AC XY: 1 AN XY: 727206

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 8.99e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ExAC AF: 0.00000824 AC: 1

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Dec 21, 2021

The c.1402G>A (p.D468N) alteration is located in exon 6 (coding exon 6) of the OSGIN2 gene. This alteration results from a G to A substitution at nucleotide position 1402, causing the aspartic acid (D) at amino acid position 468 to be replaced by an asparagine (N). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.078
BayesDel_addAF	Benign	-0.27	T
BayesDel_noAF	Benign	-0.62
Cadd	Benign	21
Dann	Benign	0.90
DEOGEN2	Benign	0.016	T;T;.
Eigen	Benign	0.030
Eigen_PC	Uncertain	0.26
FATHMM_MKL	Pathogenic	0.99	D
M_CAP	Benign	0.0055	T
MetaRNN	Benign	0.11	T;T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	1.2	L;L;.
MutationTaster	Benign	1.0	D;D
PrimateAI	Benign	0.42	T
Polyphen		0.0020	B;B;B
Vest4		0.11, 0.098
MutPred		0.20		Loss of ubiquitination at K423 (P = 0.0449);Loss of ubiquitination at K423 (P = 0.0449);.;
MVP		0.32
MPC		0.34
ClinPred		0.36	T
GERP RS		5.8
Varity_R		0.13
gMVP		0.46

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

Publications

LitVar

Other links and lift over

dbSNP: rs764336640; hg19: chr8-90937512;