NM_130439.3:c.67C>A

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_130439.3(MXI1):c.67C>A(p.Pro23Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000041 in 1,242,394 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/19 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: 31)

Exomes 𝑓: 0.000039 ( 0 hom. )

Consequence

MXI1
NM_130439.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.37

Publications

0 publications found

Variant links:

Genes affected

MXI1 (HGNC:7534): (MAX interactor 1, dimerization protein) Expression of the c-myc gene, which produces an oncogenic transcription factor, is tightly regulated in normal cells but is frequently deregulated in human cancers. The protein encoded by this gene is a transcriptional repressor thought to negatively regulate MYC function, and is therefore a potential tumor suppressor. This protein inhibits the transcriptional activity of MYC by competing for MAX, another basic helix-loop-helix protein that binds to MYC and is required for its function. Defects in this gene are frequently found in patients with prostate tumors. Three alternatively spliced transcripts encoding different isoforms have been described. Additional alternatively spliced transcripts may exist but the products of these transcripts have not been verified experimentally. [provided by RefSeq, Jul 2008]

MXI1 links:

ENSG00000228417 (HGNC:):

ENSG00000228417 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.18326259).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MXI1	NM_130439.3 link	c.67C>A	p.Pro23Thr	missense_variant	Exon 1 of 6	ENST00000332674.9	NP_569157.2	P50539-3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
MXI1	ENST00000332674.9 link	c.67C>A	p.Pro23Thr	missense_variant	Exon 1 of 6	1	NM_130439.3	ENSP00000331152.5	P50539-3
MXI1	ENST00000453116.5 link	c.67C>A	p.Pro23Thr	missense_variant	Exon 1 of 4	5		ENSP00000398981.1	F6U3F6
ENSG00000228417	ENST00000451656.1 link	n.445G>T		non_coding_transcript_exon_variant	Exon 3 of 3	3
ENSG00000303571	ENST00000795696.1 link	n.-51G>T		upstream_gene_variant

Frequencies

GnomAD3 genomes

AF:

0.0000535

AC:

AN:

149436

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000666

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000895

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000370

AC:

AN:

27020

AF XY:

0.00

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 FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000952

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000393

AC:

AN:

1092848

Hom.:

Cov.:

AF XY:

0.0000434

AC XY:

AN XY:

529354

show subpopulations

African (AFR)

AF:

0.0000481

AC:

AN:

20782

American (AMR)

AF:

0.00

AC:

AN:

7192

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

13136

East Asian (EAS)

AF:

0.00

AC:

AN:

21066

South Asian (SAS)

AF:

0.0000591

AC:

AN:

33868

European-Finnish (FIN)

AF:

0.00

AC:

AN:

31642

Middle Eastern (MID)

AF:

0.00

AC:

AN:

2728

European-Non Finnish (NFE)

AF:

0.0000391

AC:

AN:

920926

Other (OTH)

AF:

0.0000964

AC:

AN:

41508

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.560

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.0000535

AC:

AN:

149546

Hom.:

Cov.:

AF XY:

0.0000411

AC XY:

AN XY:

73002

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41240

American (AMR)

AF:

0.0000665

AC:

AN:

15046

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3428

East Asian (EAS)

AF:

0.00

AC:

AN:

5122

South Asian (SAS)

AF:

0.000207

AC:

AN:

4822

European-Finnish (FIN)

AF:

0.00

AC:

AN:

9572

Middle Eastern (MID)

AF:

0.00

AC:

AN:

292

European-Non Finnish (NFE)

AF:

0.0000895

AC:

AN:

67030

Other (OTH)

AF:

0.00

AC:

AN:

2084

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.519

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.0000567

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

May 18, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.67C>A (p.P23T) alteration is located in exon 1 (coding exon 1) of the MXI1 gene. This alteration results from a C to A substitution at nucleotide position 67, causing the proline (P) at amino acid position 23 to be replaced by a threonine (T). 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

BayesDel_addAF

Benign

-0.21

BayesDel_noAF

Benign

-0.54

CADD

Benign

(source)

DANN

Uncertain

0.99

Eigen

Benign

0.13

Eigen_PC

Benign

0.14

FATHMM_MKL

Benign

0.43

LIST_S2

Benign

0.78

T;T

M_CAP

Benign

0.040

MetaRNN

Benign

0.18

T;T

MetaSVM

Benign

-0.92

PhyloP100

1.4

PrimateAI

Pathogenic

0.81

PROVEAN

Benign

0.050

N;N

REVEL

Benign

0.11

Sift

Benign

0.17

T;D

Sift4G

Uncertain

0.014

D;T

Polyphen

0.94

P;.

Vest4

0.33

MutPred

0.19

Gain of phosphorylation at P23 (P = 0.0042);Gain of phosphorylation at P23 (P = 0.0042);

MVP

0.14

MPC

0.65

ClinPred

0.79

GERP RS

3.8

PromoterAI

0.039

Neutral

(source)

gMVP

0.32

Mutation Taster

=90/10

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.

NM_130439.3:c.67C>A

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over