X-74740268-T-G

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_001008537.3(NEXMIF):c.4289A>C(p.Lys1430Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000661 in 1,209,597 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 1 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. 12/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000018 ( 0 hom., 0 hem., cov: 22)

Exomes 𝑓: 0.0000055 ( 0 hom. 1 hem. )

Consequence

NEXMIF
NM_001008537.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.14

Publications

0 publications found

Variant links:

Genes affected

NEXMIF (HGNC:29433): (neurite extension and migration factor) An inversion on the X chromosome which disrupts this gene and a G-protein coupled purinergic receptor gene located in the pseudoautosomal region of the X chromosome has been linked to X linked cognitive disability.[provided by RefSeq, Mar 2009]

NEXMIF Gene-Disease associations (from GenCC):

X-linked complex neurodevelopmental disorder
Inheritance: XL Classification: DEFINITIVE Submitted by: ClinGen
X-linked intellectual disability, Cantagrel type
Inheritance: XL Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae)
myoclonic-astatic epilepsy
Inheritance: Unknown Classification: SUPPORTIVE Submitted by: Orphanet

NEXMIF links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.15190324).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001008537.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NEXMIF	NM_001008537.3	MANE Select	c.4289A>C	p.Lys1430Thr	missense	Exon 3 of 4	NP_001008537.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
NEXMIF	ENST00000055682.12	TSL:1 MANE Select	c.4289A>C	p.Lys1430Thr	missense	Exon 3 of 4	ENSP00000055682.5
NEXMIF	ENST00000616200.2	TSL:1	c.4289A>C	p.Lys1430Thr	missense	Exon 3 of 5	ENSP00000480284.1
NEXMIF	ENST00000642681.2		c.4289A>C	p.Lys1430Thr	missense	Exon 3 of 3	ENSP00000495800.1

Frequencies

GnomAD3 genomes

AF:

0.0000179

AC:

AN:

111498

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000191

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000273

AC:

AN:

183130

AF XY:

0.0000148

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000146

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000221

GnomAD4 exome

AF:

0.00000546

AC:

AN:

1098099

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

363483

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

26393

American (AMR)

AF:

0.000170

AC:

AN:

35205

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

19383

East Asian (EAS)

AF:

0.00

AC:

AN:

30202

South Asian (SAS)

AF:

0.00

AC:

AN:

54145

European-Finnish (FIN)

AF:

0.00

AC:

AN:

40514

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4136

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

842026

Other (OTH)

AF:

0.00

AC:

AN:

46095

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.535

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0000179

AC:

AN:

111498

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

33690

show subpopulations

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

30579

American (AMR)

AF:

0.000191

AC:

AN:

10452

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

2643

East Asian (EAS)

AF:

0.00

AC:

AN:

3567

South Asian (SAS)

AF:

0.00

AC:

AN:

2641

European-Finnish (FIN)

AF:

0.00

AC:

AN:

6059

Middle Eastern (MID)

AF:

0.00

AC:

AN:

238

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

53142

Other (OTH)

AF:

0.00

AC:

AN:

1498

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0.00000000770867), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.400

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.0000151

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Nov 03, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces lysine, which is basic and polar, with threonine, which is neutral and polar, at codon 1430 of the NEXMIF protein (p.Lys1430Thr). This variant is present in population databases (no rsID available, gnomAD 0.02%), including at least one homozygous and/or hemizygous individual. This variant has not been reported in the literature in individuals affected with NEXMIF-related conditions. ClinVar contains an entry for this variant (Variation ID: 573180). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant¬†is likely to be tolerated. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance.

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.12

BayesDel_addAF

Benign

-0.39

BayesDel_noAF

Benign

-0.53

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.021

FATHMM_MKL

Uncertain

0.95

LIST_S2

Benign

0.83

M_CAP

Uncertain

0.16

MetaRNN

Benign

0.15

MetaSVM

Benign

-0.99

PhyloP100

2.1

PrimateAI

Benign

0.39

PROVEAN

Benign

0.84

REVEL

Benign

0.11

Sift

Benign

0.043

Sift4G

Benign

0.61

Polyphen

0.62

Vest4

0.25

MutPred

0.12

Loss of ubiquitination at K1430 (P = 9e-04)

MVP

0.19

MPC

0.42

ClinPred

0.11

GERP RS

5.4

Varity_R

0.13

gMVP

0.14

Mutation Taster

=97/3

polymorphism

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over