Variant 18-48950037-C-T 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_005904.4(SMAD7):c.388G>A(p.Gly130Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 14/21 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: 0.0 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

SMAD7
NM_005904.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.730

Variant links:

Genes affected

SMAD7 (HGNC:6773): (SMAD family member 7) The protein encoded by this gene is a nuclear protein that binds the E3 ubiquitin ligase SMURF2. Upon binding, this complex translocates to the cytoplasm, where it interacts with TGF-beta receptor type-1 (TGFBR1), leading to the degradation of both the encoded protein and TGFBR1. Expression of this gene is induced by TGFBR1. Variations in this gene are a cause of susceptibility to colorectal cancer type 3 (CRCS3). Several transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jun 2010]

SMAD7 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=0.13939404).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SMAD7	NM_005904.4 linkuse as main transcript	c.388G>A	p.Gly130Ser	missense_variant	1/4	ENST00000262158.8
SMAD7	NM_001190821.2 linkuse as main transcript	c.388G>A	p.Gly130Ser	missense_variant	1/4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SMAD7	ENST00000262158.8 linkuse as main transcript	c.388G>A	p.Gly130Ser	missense_variant	1/4	1	NM_005904.4	P4	O15105-1
SMAD7	ENST00000589634.1 linkuse as main transcript	c.388G>A	p.Gly130Ser	missense_variant	1/4	4		A1	O15105-3

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

Data not reliable, filtered out with message: AC0

AF:

0.00

AC:

AN:

1295680

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

637204

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

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

Apr 07, 2022

The c.388G>A (p.G130S) alteration is located in exon 1 (coding exon 1) of the SMAD7 gene. This alteration results from a G to A substitution at nucleotide position 388, causing the glycine (G) at amino acid position 130 to be replaced by a serine (S). 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

0.091

BayesDel_addAF

Benign

-0.14

BayesDel_noAF

Benign

-0.43

CADD

Benign

DANN

Benign

0.90

DEOGEN2

Uncertain

0.49

T;.

Eigen

Benign

-0.36

Eigen_PC

Benign

-0.31

FATHMM_MKL

Benign

0.60

LIST_S2

Uncertain

0.89

D;D

M_CAP

Uncertain

0.18

MetaRNN

Benign

0.14

T;T

MetaSVM

Benign

-0.65

MutationAssessor

Benign

0.55

N;N

MutationTaster

Benign

0.66

D;D

PrimateAI

Pathogenic

0.84

PROVEAN

Benign

-0.49

N;.

REVEL

Benign

0.10

Sift

Benign

0.39

T;.

Sift4G

Benign

0.72

T;T

Polyphen

0.39

B;.

Vest4

0.12

MutPred

0.37

Loss of methylation at R131 (P = 0.0545);Loss of methylation at R131 (P = 0.0545);

MVP

0.56

MPC

1.1

ClinPred

0.23

GERP RS

3.3

Varity_R

0.16

gMVP

0.32

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