Genetic Variant MMP9:p.Arg621Thr (chr20-46014235-G-C) – ACMG Classification: Likely_benign (-5 pts)

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 0P and 5B. BP4_StrongBS2_Supporting

The NM_004994.3(MMP9):c.1862G>C(p.Arg621Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000111 in 1,534,518 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R621K) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000066 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000051 ( 0 hom. )

Consequence

MMP9
NM_004994.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.100

Publications

3 publications found

Variant links:

Genes affected

MMP9 (HGNC:7176): (matrix metallopeptidase 9) 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. Most MMP's are secreted as inactive proproteins which are activated when cleaved by extracellular proteinases. The enzyme encoded by this gene degrades type IV and V collagens. Studies in rhesus monkeys suggest that the enzyme is involved in IL-8-induced mobilization of hematopoietic progenitor cells from bone marrow, and murine studies suggest a role in tumor-associated tissue remodeling. [provided by RefSeq, Jul 2008]

MMP9 links:

SLC12A5-AS1 (HGNC:53143): (SLC12A5 and MMP9 antisense RNA 1)

SLC12A5-AS1 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -5 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.06421149).

BS2

High AC in GnomAd4 at 10 Unknown,AD gene. Variant has AC lower than other variant known as pathogenic in the gene, so the strength is limited to Supporting.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MMP9	NM_004994.3 link	c.1862G>C	p.Arg621Thr	missense_variant	Exon 11 of 13	ENST00000372330.3	NP_004985.2
SLC12A5-AS1	NR_147699.1 link	n.1222C>G		non_coding_transcript_exon_variant	Exon 3 of 3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MMP9	ENST00000372330.3 link	c.1862G>C	p.Arg621Thr	missense_variant	Exon 11 of 13	1	NM_004994.3	ENSP00000361405.3
SLC12A5-AS1	ENST00000535913.2 link	n.1222C>G		non_coding_transcript_exon_variant	Exon 3 of 3	2

Frequencies

GnomAD3 genomes

AF:

0.0000657

AC:

AN:

152196

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000241

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

GnomAD2 exomes

AF:

0.00000751

AC:

AN:

133204

AF XY:

0.00

show subpopulations

Gnomad AFR exome

AF:

0.000152

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000506

AC:

AN:

1382322

Hom.:

Cov.:

AF XY:

0.00000147

AC XY:

AN XY:

681180

show subpopulations

African (AFR)

AF:

0.000192

AC:

AN:

31218

American (AMR)

AF:

0.00

AC:

AN:

34868

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

24858

East Asian (EAS)

AF:

0.00

AC:

AN:

35568

South Asian (SAS)

AF:

0.00

AC:

AN:

78800

European-Finnish (FIN)

AF:

0.00

AC:

AN:

40470

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4788

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1074390

Other (OTH)

AF:

0.0000174

AC:

AN:

57362

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.496

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:

0.0000657

AC:

AN:

152196

Hom.:

Cov.:

AF XY:

0.0000807

AC XY:

AN XY:

74370

show subpopulations

African (AFR)

AF:

0.000241

AC:

AN:

41450

American (AMR)

AF:

0.00

AC:

AN:

15284

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5186

South Asian (SAS)

AF:

0.00

AC:

AN:

4836

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10626

Middle Eastern (MID)

AF:

0.00

AC:

AN:

314

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68028

Other (OTH)

AF:

0.00

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.480

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:

0.0000680

ExAC

AF:

0.0000328

AC:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.086

BayesDel_addAF

Benign

-0.28

BayesDel_noAF

Benign

-0.63

CADD

Benign

0.16

(source)

DANN

Benign

0.49

DEOGEN2

Benign

0.12

Eigen

Benign

-1.7

Eigen_PC

Benign

-1.7

FATHMM_MKL

Benign

0.044

LIST_S2

Benign

0.46

M_CAP

Benign

0.0066

MetaRNN

Benign

0.064

MetaSVM

Benign

-0.99

MutationAssessor

Benign

0.17

PhyloP100

-0.10

PrimateAI

Benign

0.26

PROVEAN

Benign

-1.6

REVEL

Benign

0.015

Sift

Benign

0.59

Sift4G

Benign

0.59

Vest4

0.25

ClinPred

0.015

GERP RS

-2.0

Varity_R

0.31

gMVP

0.40

Mutation Taster

=95/5

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over