Genetic Variant PPM1M:p.Ala133Gly (chr3-52247029-C-G) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_144641.4(PPM1M):c.398C>G(p.Ala133Gly) variant causes a missense change. The variant allele was found at a frequency of 0.000067 in 1,551,512 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000072 ( 1 hom., cov: 32)

Exomes 𝑓: 0.000066 ( 0 hom. )

Consequence

PPM1M
NM_144641.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 6.18

Variant links:

Genes affected

PPM1M (HGNC:26506): (protein phosphatase, Mg2+/Mn2+ dependent 1M) Predicted to enable manganese ion binding activity and phosphoprotein phosphatase activity. Predicted to be involved in protein dephosphorylation. Predicted to be located in nucleus. [provided by Alliance of Genome Resources, Apr 2022]

PPM1M links:

TWF2 (HGNC:9621): (twinfilin actin binding protein 2) The protein encoded by this gene was identified by its interaction with the catalytic domain of protein kinase C-zeta. The encoded protein contains an actin-binding site and an ATP-binding site. It is most closely related to twinfilin (PTK9), a conserved actin monomer-binding protein. [provided by RefSeq, Jul 2008]

TWF2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.076018155).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PPM1M	NM_144641.4 link	c.398C>G	p.Ala133Gly	missense_variant	Exon 3 of 10	ENST00000323588.9	NP_653242.3	Q96MI6-5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PPM1M	ENST00000323588.9 link	c.398C>G	p.Ala133Gly	missense_variant	Exon 3 of 10	1	NM_144641.4	ENSP00000319894.5		Q96MI6-5

Frequencies

GnomAD3 genomes

AF:

0.0000657

AC:

AN:

152200

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:

0.000963

Gnomad SAS

AF:

0.00104

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000956

AC:

AN:

156974

Hom.:

AF XY:

0.000109

AC XY:

AN XY:

82704

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000438

Gnomad SAS exome

AF:

0.000218

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000820

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000665

AC:

AN:

1399194

Hom.:

Cov.:

AF XY:

0.0000724

AC XY:

AN XY:

690210

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.000238

Gnomad4 EAS exome

AF:

0.00101

Gnomad4 SAS exome

AF:

0.000240

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000222

Gnomad4 OTH exome

AF:

0.0000689

GnomAD4 genome

AF:

0.0000722

AC:

AN:

152318

Hom.:

Cov.:

AF XY:

0.0000806

AC XY:

AN XY:

74482

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00116

Gnomad4 SAS

AF:

0.00104

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000453

ExAC

AF:

0.0000474

AC:

Asia WGS

AF:

0.000866

AC:

AN:

3478

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jan 16, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.398C>G (p.A133G) alteration is located in exon 3 (coding exon 3) of the PPM1M gene. This alteration results from a C to G substitution at nucleotide position 398, causing the alanine (A) at amino acid position 133 to be replaced by a glycine (G). 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

-0.18

BayesDel_noAF

Benign

-0.16

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.063

Eigen

Uncertain

0.64

Eigen_PC

Uncertain

0.61

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Benign

0.86

M_CAP

Benign

0.0063

MetaRNN

Benign

0.076

MetaSVM

Benign

-1.1

PrimateAI

Uncertain

0.62

Sift4G

Uncertain

0.0090

Polyphen

0.99

Vest4

0.66

MVP

0.46

ClinPred

0.17

GERP RS

4.5

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.030

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