chr7-157005560-G-A

Position:

chr7-157005560-G-A

Variant summary

Our verdict is Benign. Variant got -9 ACMG points: 0P and 9B. BP4_StrongBS1_SupportingBS2

The NM_005515.4(MNX1):c.1166C>T(p.Ser389Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000307 in 1,561,544 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000053 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000028 ( 0 hom. )

Consequence

MNX1
NM_005515.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.838

Variant links:

Genes affected

MNX1 (HGNC:4979): (motor neuron and pancreas homeobox 1) This gene encodes a nuclear protein, which contains a homeobox domain and is a transcription factor. Mutations in this gene result in Currarino syndrome, an autosomic dominant congenital malformation. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Sep 2009]

MNX1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -9 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.038835138).

BS1

Variant frequency is greater than expected in population sas. gnomad4 allele frequency = 0.0000526 (8/152060) while in subpopulation SAS AF= 0.00103 (5/4832). AF 95% confidence interval is 0.000408. There are 0 homozygotes in gnomad4. There are 6 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

BS2

High AC in GnomAd4 at 8 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
MNX1	NM_005515.4 linkuse as main transcript	c.1166C>T	p.Ser389Leu	missense_variant	3/3	ENST00000252971.11
MNX1	NM_001165255.2 linkuse as main transcript	c.530C>T	p.Ser177Leu	missense_variant	3/3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MNX1	ENST00000252971.11 linkuse as main transcript	c.1166C>T	p.Ser389Leu	missense_variant	3/3	1	NM_005515.4	P2	P50219-1
MNX1	ENST00000543409.5 linkuse as main transcript	c.530C>T	p.Ser177Leu	missense_variant	3/3	1		A2	P50219-2
MNX1	ENST00000469500.5 linkuse as main transcript	c.55+3438C>T		intron_variant		1
MNX1	ENST00000479817.1 linkuse as main transcript	c.38+4100C>T		intron_variant		1

Frequencies

GnomAD3 genomes

AF:

0.0000526

AC:

AN:

151952

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000193

Gnomad SAS

AF:

0.00103

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000638

AC:

AN:

172340

Hom.:

AF XY:

0.0000731

AC XY:

AN XY:

95738

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000872

Gnomad SAS exome

AF:

0.000372

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000223

GnomAD4 exome

AF:

0.0000284

AC:

AN:

1409484

Hom.:

Cov.:

AF XY:

0.0000429

AC XY:

AN XY:

698500

show subpopulations

Gnomad4 AFR exome

AF:

0.0000339

Gnomad4 AMR exome

AF:

0.0000257

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000397

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000183

Gnomad4 OTH exome

AF:

0.0000688

GnomAD4 genome

AF:

0.0000526

AC:

AN:

152060

Hom.:

Cov.:

AF XY:

0.0000807

AC XY:

AN XY:

74330

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000194

Gnomad4 SAS

AF:

0.00103

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000151

ExAC

AF:

0.0000776

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

Oct 09, 2022

This sequence change replaces serine, which is neutral and polar, with leucine, which is neutral and non-polar, at codon 389 of the MNX1 protein (p.Ser389Leu). This variant is present in population databases (rs200578176, gnomAD 0.03%). This variant has not been reported in the literature in individuals affected with MNX1-related conditions. Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Tolerated"; PolyPhen-2: "Not Available"; Align-GVGD: "Class C15". The leucine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. 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

0.088

BayesDel_addAF

Benign

-0.26

BayesDel_noAF

Benign

-0.31

CADD

Benign

DANN

Benign

0.96

DEOGEN2

Benign

0.31

.;T

Eigen

Benign

-0.81

Eigen_PC

Benign

-0.78

FATHMM_MKL

Uncertain

0.89

LIST_S2

Benign

0.49

T;T

M_CAP

Pathogenic

0.48

MetaRNN

Benign

0.039

T;T

MetaSVM

Benign

-0.42

MutationAssessor

Uncertain

2.3

.;M

MutationTaster

Benign

0.99

N;N

PrimateAI

Uncertain

0.64

PROVEAN

Benign

-2.3

N;N

REVEL

Benign

0.14

Sift

Benign

0.058

T;T

Sift4G

Benign

0.15

T;T

Polyphen

0.013

.;B

Vest4

0.14

MVP

0.51

ClinPred

0.30

GERP RS

2.3

Varity_R

0.062

gMVP

0.23

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