Variant chrX-74739478-A-G details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BS2

The NM_001008537.3(NEXMIF):c.4478T>C(p.Leu1493Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000126 in 1,193,171 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 6 hemizygotes in GnomAD. 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. L1493R) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000091 ( 0 hom., 1 hem., cov: 21)

Exomes 𝑓: 0.000013 ( 0 hom. 5 hem. )

Consequence

NEXMIF
NM_001008537.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.89

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

BS2

High Hemizygotes in GnomAdExome4 at 5 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
NEXMIF	NM_001008537.3 linkuse as main transcript	c.4478T>C	p.Leu1493Pro	missense_variant	4/4	ENST00000055682.12

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris
NEXMIF	ENST00000055682.12 linkuse as main transcript	c.4478T>C	p.Leu1493Pro	missense_variant	4/4	1	NM_001008537.3	P1
NEXMIF	ENST00000616200.2 linkuse as main transcript	c.4478T>C	p.Leu1493Pro	missense_variant	4/5	1		P1
NEXMIF	ENST00000642681.2 linkuse as main transcript	c.*618T>C		3_prime_UTR_variant	3/3

Frequencies

GnomAD3 genomes

AF:

0.00000912

AC:

AN:

109649

Hom.:

Cov.:

AF XY:

0.0000313

AC XY:

AN XY:

31907

show subpopulations

Gnomad AFR

AF:

0.0000332

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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

GnomAD3 exomes

AF:

0.00000596

AC:

AN:

167837

Hom.:

AF XY:

0.0000182

AC XY:

AN XY:

54865

show subpopulations

Gnomad AFR exome

AF:

0.0000801

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000129

AC:

AN:

1083471

Hom.:

Cov.:

AF XY:

0.0000143

AC XY:

AN XY:

350133

show subpopulations

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:

0.0000168

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000912

AC:

AN:

109700

Hom.:

Cov.:

AF XY:

0.0000313

AC XY:

AN XY:

31968

show subpopulations

Gnomad4 AFR

AF:

0.0000331

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jun 29, 2022

The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. 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. Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Deleterious"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0". The proline amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. ClinVar contains an entry for this variant (Variation ID: 1016367). This variant has not been reported in the literature in individuals affected with NEXMIF-related conditions. This sequence change replaces leucine, which is neutral and non-polar, with proline, which is neutral and non-polar, at codon 1493 of the NEXMIF protein (p.Leu1493Pro). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.13

BayesDel_addAF

Pathogenic

0.22

BayesDel_noAF

Uncertain

0.080

CADD

Benign

DANN

Benign

0.97

DEOGEN2

Benign

0.077

T;T

FATHMM_MKL

Uncertain

0.85

LIST_S2

Benign

0.53

.;T

M_CAP

Pathogenic

0.45

MetaRNN

Uncertain

0.61

D;D

MetaSVM

Benign

-0.91

MutationTaster

Benign

1.0

D;D

PrimateAI

Uncertain

0.52

PROVEAN

Benign

0.34

N;.

REVEL

Benign

0.26

Sift

Benign

0.035

D;.

Sift4G

Pathogenic

0.0

D;D

Polyphen

1.0

D;D

Vest4

0.55

MutPred

0.42

Loss of stability (P = 0.0139);Loss of stability (P = 0.0139);

MVP

0.70

MPC

0.40

ClinPred

0.21

GERP RS

5.5

Varity_R

0.48

gMVP

0.69

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over