Genetic Variant MMP23B:p.Pro8Leu (chr1-1632241-C-T) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

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

The NM_006983.2(MMP23B):c.23C>T(p.Pro8Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000156 in 1,344,574 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 29)

Exomes 𝑓: 0.000015 ( 0 hom. )

Consequence

MMP23B
NM_006983.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.224

Publications

0 publications found

Variant links:

Genes affected

MMP23B (HGNC:7171): (matrix metallopeptidase 23B) This gene (MMP23B) encodes a member of the matrix metalloproteinase (MMP) family, and it is part of a duplicated region of chromosome 1p36.3. Proteins of the matrix metalloproteinase (MMP) family are involved in the breakdown of extracellular matrix in normal physiological processes, such as embryonic development, reproduction, and tissue remodeling, as well as in disease processes, such as arthritis and metastasis. This gene belongs to the more telomeric copy of the duplicated region. [provided by RefSeq, Jul 2008]

MMP23B links:

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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=0.10234654).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_006983.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MMP23B	NM_006983.2	MANE Select	c.23C>T	p.Pro8Leu	missense	Exon 1 of 8	NP_008914.1	O75900-1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
MMP23B	ENST00000356026.10	TSL:1 MANE Select	c.23C>T	p.Pro8Leu	missense	Exon 1 of 8	ENSP00000348308.5	O75900-1
MMP23B	ENST00000378675.7	TSL:1	c.23C>T	p.Pro8Leu	missense	Exon 1 of 7	ENSP00000367945.3	O75086
MMP23B	ENST00000891264.1		c.23C>T	p.Pro8Leu	missense	Exon 1 of 7	ENSP00000561323.1

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152164

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000817

AC:

AN:

12238

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:

0.000218

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000151

AC:

AN:

1192410

Hom.:

Cov.:

AF XY:

0.0000156

AC XY:

AN XY:

578228

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

23728

American (AMR)

AF:

0.00

AC:

AN:

10772

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

16794

East Asian (EAS)

AF:

0.00

AC:

AN:

27184

South Asian (SAS)

AF:

0.00

AC:

AN:

45030

European-Finnish (FIN)

AF:

0.0000706

AC:

AN:

28330

Middle Eastern (MID)

AF:

0.00

AC:

AN:

3386

European-Non Finnish (NFE)

AF:

0.0000142

AC:

AN:

988208

Other (OTH)

AF:

0.0000408

AC:

AN:

48978

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.511

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

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:

0.0000197

AC:

AN:

152164

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74354

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41452

American (AMR)

AF:

0.00

AC:

AN:

15276

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5196

South Asian (SAS)

AF:

0.00

AC:

AN:

4836

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10616

Middle Eastern (MID)

AF:

0.00

AC:

AN:

312

European-Non Finnish (NFE)

AF:

0.0000441

AC:

AN:

68000

Other (OTH)

AF:

0.00

AC:

AN:

2094

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.508

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

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

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.0000189

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

not specified (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.16

BayesDel_noAF

Benign

-0.46

CADD

Benign

(source)

DANN

Benign

0.97

DEOGEN2

Benign

0.097

Eigen

Benign

-0.96

Eigen_PC

Benign

-1.0

FATHMM_MKL

Benign

0.042

LIST_S2

Benign

0.59

M_CAP

Uncertain

0.26

MetaRNN

Benign

0.10

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.90

PhyloP100

0.22

PrimateAI

Uncertain

0.73

PROVEAN

Benign

-0.75

REVEL

Benign

0.020

Sift

Uncertain

0.011

Sift4G

Benign

0.15

Polyphen

0.0

Vest4

0.18

MutPred

0.38

Gain of sheet (P = 0.0125)

MVP

0.20

ClinPred

0.078

GERP RS

2.0

PromoterAI

-0.027

Neutral

(source)

Varity_R

0.037

gMVP

0.37

Mutation Taster

=96/4

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

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over