Genetic Variant SMAD3:c.207-10G>A (chr15-67164885-G-A) – ACMG Classification: Benign (-13 pts)

Variant summary

Our verdict is Benign. The variant received -13 ACMG points: 0P and 13B. BP4_StrongBP6BS1BS2

The NM_005902.4(SMAD3):c.207-10G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000289 in 1,612,588 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00025 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00029 ( 3 hom. )

Consequence

SMAD3
NM_005902.4 intron

Scores

Splicing: ADA: 0.00005144

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:4B:9

Conservation

PhyloP100: -2.51

Publications

1 publications found

Variant links:

Genes affected

SMAD3 (HGNC:6769): (SMAD family member 3) The SMAD family of proteins are a group of intracellular signal transducer proteins similar to the gene products of the Drosophila gene 'mothers against decapentaplegic' (Mad) and the C. elegans gene Sma. The SMAD3 protein functions in the transforming growth factor-beta signaling pathway, and transmits signals from the cell surface to the nucleus, regulating gene activity and cell proliferation. This protein forms a complex with other SMAD proteins and binds DNA, functioning both as a transcription factor and tumor suppressor. Mutations in this gene are associated with aneurysms-osteoarthritis syndrome and Loeys-Dietz Syndrome 3. [provided by RefSeq, May 2022]

SMAD3 Gene-Disease associations (from GenCC):

aneurysm-osteoarthritis syndrome
Inheritance: Unknown, AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: ClinGen, G2P, Genomics England PanelApp, Orphanet, Labcorp Genetics (formerly Invitae)
familial thoracic aortic aneurysm and aortic dissection
Inheritance: Unknown, AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: ClinGen, Orphanet

SMAD3 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -13 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.9).

BP6

Variant 15-67164885-G-A is Benign according to our data. Variant chr15-67164885-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 284209.

BS1

Variant frequency is greater than expected in population eas. GnomAd4 allele frequency = 0.000249 (38/152336) while in subpopulation EAS AF = 0.000385 (2/5192). AF 95% confidence interval is 0.000185. There are 0 homozygotes in GnomAd4. There are 21 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High AC in GnomAd4 at 38 Unknown,AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_005902.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
SMAD3	NM_005902.4	MANE Select	c.207-10G>A	intron	N/A	NP_005893.1	P84022-1
SMAD3	NM_001407011.1		c.207-10G>A	intron	N/A	NP_001393940.1	H3BQ00
SMAD3	NM_001145103.2		c.75-10G>A	intron	N/A	NP_001138575.1	P84022-2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
SMAD3	ENST00000327367.9	TSL:1 MANE Select	c.207-10G>A	intron	N/A	ENSP00000332973.4	P84022-1
SMAD3	ENST00000439724.7	TSL:1	c.75-10G>A	intron	N/A	ENSP00000401133.3	P84022-2
SMAD3	ENST00000540846.6	TSL:1	c.-109-10G>A	intron	N/A	ENSP00000437757.2	P84022-3

Frequencies

GnomAD3 genomes

AF:

0.000250

AC:

AN:

152218

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000314

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00403

Gnomad EAS

AF:

0.000384

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000118

Gnomad OTH

AF:

0.000478

GnomAD2 exomes

AF:

0.000370

AC:

AN:

251170

AF XY:

0.000309

show subpopulations

Gnomad AFR exome

AF:

0.000123

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00635

Gnomad EAS exome

AF:

0.000381

Gnomad FIN exome

AF:

0.0000462

Gnomad NFE exome

AF:

0.000132

Gnomad OTH exome

AF:

0.000489

GnomAD4 exome

AF:

0.000293

AC:

428

AN:

1460252

Hom.:

Cov.:

AF XY:

0.000279

AC XY:

203

AN XY:

726450

show subpopulations

African (AFR)

AF:

0.000209

AC:

AN:

33428

American (AMR)

AF:

0.0000224

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00742

AC:

194

AN:

26136

East Asian (EAS)

AF:

0.00207

AC:

AN:

39700

South Asian (SAS)

AF:

0.0000348

AC:

AN:

86176

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53408

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4464

European-Non Finnish (NFE)

AF:

0.0000926

AC:

103

AN:

1111964

Other (OTH)

AF:

0.000631

AC:

AN:

60252

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.471

Heterozygous variant carriers

120

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:

0.000249

AC:

AN:

152336

Hom.:

Cov.:

AF XY:

0.000282

AC XY:

AN XY:

74510

show subpopulations

African (AFR)

AF:

0.000313

AC:

AN:

41574

American (AMR)

AF:

0.00

AC:

AN:

15308

Ashkenazi Jewish (ASJ)

AF:

0.00403

AC:

AN:

3472

East Asian (EAS)

AF:

0.000385

AC:

AN:

5192

South Asian (SAS)

AF:

0.00

AC:

AN:

4834

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10618

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000118

AC:

AN:

68022

Other (OTH)

AF:

0.000473

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.521

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:

0.00103

Hom.:

Bravo

AF:

0.000276

Asia WGS

AF:

0.000866

AC:

AN:

3478

ClinVar

ClinVar submissions

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

Familial thoracic aortic aneurysm and aortic dissection (3)

not specified (3)

Aneurysm-osteoarthritis syndrome (2)

Connective tissue disorder (1)

Ehlers-Danlos syndrome (1)

Loeys-Dietz syndrome (1)

not provided (1)

SMAD3-related disorder (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.90

CADD

Benign

0.0080

(source)

DANN

Benign

0.61

PhyloP100

-2.5

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Mutation Taster

=100/0

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.000051

dbscSNV1_RF

Benign

0.024

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over