2-190516330-C-T

Position:

• chr2-190516330-C-T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_001142645.2(NEMP2):​c.667G>A​(p.Val223Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000715 in 1,399,380 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/19 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: 7.1e-7 (0 hom.)
• Consequence: NEMP2 NM_001142645.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.221

Genes affected

NEMP2 (HGNC:33700): (nuclear envelope integral membrane protein 2) Predicted to be located in nuclear inner membrane. Predicted to be integral component of membrane. Predicted to be active in nuclear envelope. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.051502287).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
NEMP2	NM_001142645.2	c.667G>A	p.Val223Ile	missense_variant	6/9	ENST00000409150.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
NEMP2	ENST00000409150.8	c.667G>A	p.Val223Ile	missense_variant	6/9	2	NM_001142645.2	P1
NEMP2	ENST00000343105.9	c.*202G>A		3_prime_UTR_variant, NMD_transcript_variant	6/6	4
NEMP2	ENST00000414176.5	c.405+1190G>A		intron_variant, NMD_transcript_variant		2
NEMP2	ENST00000444545.5	c.*248G>A		3_prime_UTR_variant, NMD_transcript_variant	5/6	3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 7.15e-7 AC: 1 AN: 1399380 Hom.: 0 Cov.: 30 AF XY: 0.00 AC XY: 0 AN XY: 690198

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: 9.27e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

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

Sep 27, 2021

The c.667G>A (p.V223I) alteration is located in exon 6 (coding exon 6) of the NEMP2 gene. This alteration results from a G to A substitution at nucleotide position 667, causing the valine (V) at amino acid position 223 to be replaced by an isoleucine (I). 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	-0.25	T
BayesDel_noAF	Benign	-0.59
CADD	Benign	0.20
DANN	Benign	0.38
DEOGEN2	Benign	0.0038	T
Eigen	Benign	-1.3
Eigen_PC	Benign	-1.3
FATHMM_MKL	Benign	0.011	N
LIST_S2	Benign	0.60	T
M_CAP	Benign	0.0063	T
MetaRNN	Benign	0.052	T
MetaSVM	Benign	-1.0	T
MutationTaster	Benign	1.0	N
PrimateAI	Benign	0.33	T
PROVEAN	Benign	0.32	N
REVEL	Benign	0.039
Sift	Benign	1.0	T
Sift4G	Benign	0.55	T
Polyphen		0.043	B
Vest4		0.10
MutPred		0.54		Loss of catalytic residue at V223 (P = 8e-04);
MVP		0.055
ClinPred		0.018	T
GERP RS		-1.6
Varity_R		0.024
gMVP		0.045

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr2-191381056;