Variant chr18-32190123-T-C 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_005925.3(MEP1B):c.53T>C(p.Ile18Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000657 in 152,228 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Consequence

MEP1B
NM_005925.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.345

Variant links:

Genes affected

MEP1B (HGNC:7020): (meprin A subunit beta) Meprins are multidomain zinc metalloproteases that are highly expressed in mammalian kidney and intestinal brush border membranes, and in leukocytes and certain cancer cells. They are involved in the hydrolysis of a variety of peptide and protein substrates, and have been implicated in cancer and intestinal inflammation. Mature meprins are oligomers of evolutionarily related, but separately encoded alpha and/or beta subunits. Homooligomers of alpha subunit are secreted, whereas, oligomers containing the beta subunit are plasma membrane-bound. This gene encodes the beta subunit. Targeted disruption of this gene in mice affects embryonic viability, renal gene expression profiles, and distribution of the membrane-associated alpha subunit in kidney and intestine. [provided by RefSeq, Oct 2011]

MEP1B links:

GAREM1 (HGNC:26136): (GRB2 associated regulator of MAPK1 subtype 1) This gene encodes an adaptor protein which functions in the epidermal growth factor (EGF) receptor-mediated signaling pathway. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Oct 2011]

GAREM1 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=0.1656813).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
MEP1B	NM_005925.3 linkuse as main transcript	c.53T>C	p.Ile18Thr	missense_variant	1/15	ENST00000269202.11	NP_005916.2
MEP1B	NM_001308171.2 linkuse as main transcript	c.53T>C	p.Ile18Thr	missense_variant	1/15		NP_001295100.1
MEP1B	XM_011526013.3 linkuse as main transcript	c.53T>C	p.Ile18Thr	missense_variant	1/14		XP_011524315.1
MEP1B	XM_011526014.3 linkuse as main transcript	c.53T>C	p.Ile18Thr	missense_variant	1/13		XP_011524316.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MEP1B	ENST00000269202.11 linkuse as main transcript	c.53T>C	p.Ile18Thr	missense_variant	1/15	1	NM_005925.3	ENSP00000269202	P4

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152228

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

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

GnomAD4 exome

Cov.:

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152228

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74368

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000756

ExAC

AF:

0.00000828

AC:

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

Sep 27, 2021

The c.53T>C (p.I18T) alteration is located in exon 1 (coding exon 1) of the MEP1B gene. This alteration results from a T to C substitution at nucleotide position 53, causing the isoleucine (I) at amino acid position 18 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

AlphaMissense

Benign

0.096

BayesDel_addAF

Benign

-0.27

BayesDel_noAF

Benign

-0.62

CADD

Benign

DANN

Benign

0.97

DEOGEN2

Benign

0.13

T;T

Eigen

Benign

-0.45

Eigen_PC

Benign

-0.31

FATHMM_MKL

Benign

0.52

LIST_S2

Benign

0.45

T;T

M_CAP

Benign

0.0052

MetaRNN

Benign

0.17

T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.2

L;.

MutationTaster

Benign

1.0

D;D

PrimateAI

Benign

0.38

PROVEAN

Benign

-0.72

N;.

REVEL

Benign

0.039

Sift

Uncertain

0.019

D;.

Sift4G

Benign

0.087

T;T

Polyphen

0.039

B;.

Vest4

0.12

MutPred

0.59

Loss of stability (P = 0.0148);Loss of stability (P = 0.0148);

MVP

0.36

MPC

0.14

ClinPred

0.31

GERP RS

3.1

Varity_R

0.089

gMVP

0.51

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

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