Variant 17-43820977-G-A details in Genebe, Genetics Data Aggregator

Variant summary

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

The NM_001932.6(MPP3):c.766C>T(p.Arg256Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000116 in 1,460,760 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.000012 ( 0 hom. )

Consequence

MPP3
NM_001932.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.64

Variant links:

Genes affected

MPP3 (HGNC:7221): (MAGUK p55 scaffold protein 3) This gene product is a member of a family of membrane-associated proteins termed MAGUKs (membrane-associated guanylate kinase homologs). MAGUKs interact with the cytoskeleton and regulate cell proliferation, signaling pathways, and intracellular junctions. This protein contains a conserved sequence, called the SH3 (src homology 3) motif, found in several other proteins that associate with the cytoskeleton and are suspected to play important roles in signal transduction. Alternatively spliced transcript variants have been identified. One transcript variant is experimentally supported, but it doesn't encode a protein. [provided by RefSeq, Jul 2008]

MPP3 links:

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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=0.19728988).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MPP3	NM_001932.6 linkuse as main transcript	c.766C>T	p.Arg256Cys	missense_variant	11/20	ENST00000398389.9	NP_001923.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MPP3	ENST00000398389.9 linkuse as main transcript	c.766C>T	p.Arg256Cys	missense_variant	11/20	1	NM_001932.6	ENSP00000381425	P1	Q13368-1
MPP3	ENST00000398393.5 linkuse as main transcript	c.841C>T	p.Arg281Cys	missense_variant	9/18	1		ENSP00000381430
MPP3	ENST00000589375.5 linkuse as main transcript	n.1081C>T		non_coding_transcript_exon_variant	12/13	1
MPP3	ENST00000496503.5 linkuse as main transcript	c.766C>T	p.Arg256Cys	missense_variant, NMD_transcript_variant	11/19	1		ENSP00000465486		Q13368-2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000245

AC:

AN:

244508

Hom.:

AF XY:

0.0000225

AC XY:

AN XY:

133582

show subpopulations

Gnomad AFR exome

AF:

0.0000671

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000657

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000271

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000116

AC:

AN:

1460760

Hom.:

Cov.:

AF XY:

0.0000138

AC XY:

AN XY:

726704

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.0000464

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000899

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Bravo

AF:

0.00000756

ExAC

AF:

0.0000248

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000594

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

May 28, 2024

The c.766C>T (p.R256C) alteration is located in exon 11 (coding exon 9) of the MPP3 gene. This alteration results from a C to T substitution at nucleotide position 766, causing the arginine (R) at amino acid position 256 to be replaced by a cysteine (C). 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

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.36

BayesDel_noAF

Benign

-0.57

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.19

.;T

Eigen

Benign

-0.52

Eigen_PC

Benign

-0.50

FATHMM_MKL

Benign

0.39

LIST_S2

Benign

0.82

T;T

M_CAP

Benign

0.023

MetaRNN

Benign

0.20

T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

2.0

.;M

MutationTaster

Benign

1.0

D;D

PrimateAI

Uncertain

0.48

PROVEAN

Pathogenic

-6.0

D;D

REVEL

Benign

0.073

Sift

Benign

0.035

D;D

Sift4G

Uncertain

0.024

D;D

Polyphen

0.074

B;B

Vest4

0.43

MutPred

0.60

Loss of solvent accessibility (P = 0.1434);.;

MVP

0.42

MPC

0.62

ClinPred

0.85

GERP RS

0.40

Varity_R

0.16

gMVP

0.73

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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