NM_002448.3:c.365G>T

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM5BS2

The NM_002448.3(MSX1):c.365G>T(p.Gly122Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000113 in 1,593,390 control chromosomes in the GnomAD database, with no homozygous occurrence. 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. G122E) has been classified as Likely pathogenic.

Frequency

Genomes: 𝑓 0.000046 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00012 ( 0 hom. )

Consequence

MSX1
NM_002448.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.62

Variant links:

Genes affected

MSX1 (HGNC:7391): (msh homeobox 1) This gene encodes a member of the muscle segment homeobox gene family. The encoded protein functions as a transcriptional repressor during embryogenesis through interactions with components of the core transcription complex and other homeoproteins. It may also have roles in limb-pattern formation, craniofacial development, particularly odontogenesis, and tumor growth inhibition. Mutations in this gene, which was once known as homeobox 7, have been associated with nonsyndromic cleft lip with or without cleft palate 5, Witkop syndrome, Wolf-Hirschom syndrome, and autosomoal dominant hypodontia. [provided by RefSeq, Jul 2008]

MSX1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM5

Other missense variant is known to change same aminoacid residue: Variant chr4-4860264-G-A is described in Lovd as [Likely_pathogenic].

BS2

High AC in GnomAd4 at 7 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MSX1	NM_002448.3 link	c.365G>T	p.Gly122Val	missense_variant	Exon 1 of 2	ENST00000382723.5	NP_002439.2	P28360

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MSX1	ENST00000382723.5 link	c.365G>T	p.Gly122Val	missense_variant	Exon 1 of 2	1	NM_002448.3	ENSP00000372170.4		P28360

Frequencies

GnomAD3 genomes

AF:

0.0000464

AC:

AN:

151022

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000487

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:

0.0000739

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000412

AC:

AN:

218628

Hom.:

AF XY:

0.0000410

AC XY:

AN XY:

121930

show subpopulations

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:

0.0000915

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000120

AC:

173

AN:

1442368

Hom.:

Cov.:

AF XY:

0.000116

AC XY:

AN XY:

717742

show subpopulations

Gnomad4 AFR exome

AF:

0.0000905

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:

0.000149

Gnomad4 OTH exome

AF:

0.0000832

GnomAD4 genome

AF:

0.0000464

AC:

AN:

151022

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

73716

show subpopulations

Gnomad4 AFR

AF:

0.0000487

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:

0.0000739

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000963

Hom.:

Bravo

AF:

0.0000567

ESP6500AA

AF:

0.000499

AC:

ESP6500EA

AF:

0.000124

AC:

ExAC

AF:

0.0000340

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Hypoplastic enamel-onycholysis-hypohidrosis syndrome

Uncertain:1

Aug 31, 2021

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces glycine with valine at codon 122 of the MSX1 protein (p.Gly122Val). The glycine residue is moderately conserved and there is a moderate physicochemical difference between glycine and valine. This variant is present in population databases (rs28933081, ExAC 0.02%). This variant has not been reported in the literature in individuals affected with MSX1-related conditions. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C0"). Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may create or strengthen a splice site. 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 v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.18

BayesDel_addAF

Pathogenic

0.19

BayesDel_noAF

Pathogenic

0.22

CADD

Uncertain

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.49

Eigen

Uncertain

0.36

Eigen_PC

Uncertain

0.36

FATHMM_MKL

Uncertain

0.96

LIST_S2

Benign

0.85

M_CAP

Pathogenic

0.85

MetaRNN

Uncertain

0.65

MetaSVM

Uncertain

0.65

MutationAssessor

Uncertain

2.5

PrimateAI

Pathogenic

0.90

PROVEAN

Uncertain

-2.4

REVEL

Pathogenic

0.75

Sift

Benign

0.047

Sift4G

Uncertain

0.024

Vest4

0.41

MVP

0.99

MPC

1.4

ClinPred

0.38

GERP RS

4.7

Varity_R

0.32

gMVP

0.77

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

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