Genetic Variant SMC5:p.Arg317Cys (chr9-70282551-C-T) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_015110.4(SMC5):c.949C>T(p.Arg317Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000756 in 1,586,672 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R317H) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000046 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000035 ( 0 hom. )

Consequence

SMC5
NM_015110.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.44

Publications

1 publications found

Variant links:

Genes affected

SMC5 (HGNC:20465): (structural maintenance of chromosomes 5) Predicted to enable ATP binding activity. Involved in several processes, including DNA recombination; cellular senescence; and positive regulation of maintenance of mitotic sister chromatid cohesion. Located in cell junction; chromosome; and nuclear body. Part of Smc5-Smc6 complex. [provided by Alliance of Genome Resources, Apr 2022]

SMC5 Gene-Disease associations (from GenCC):

Atelis syndrome 2
Inheritance: AR Classification: STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, PanelApp Australia, G2P

SMC5 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.039560795).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_015110.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SMC5	NM_015110.4	MANE Select	c.949C>T	p.Arg317Cys	missense	Exon 7 of 25	NP_055925.2	Q8IY18

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
SMC5	ENST00000361138.7	TSL:1 MANE Select	c.949C>T	p.Arg317Cys	missense	Exon 7 of 25	ENSP00000354957.5	Q8IY18
SMC5	ENST00000912980.1		c.949C>T	p.Arg317Cys	missense	Exon 7 of 26	ENSP00000583039.1
SMC5	ENST00000884400.1		c.949C>T	p.Arg317Cys	missense	Exon 7 of 24	ENSP00000554459.1

Frequencies

GnomAD3 genomes

AF:

0.0000460

AC:

AN:

152082

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000724

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000193

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.00000882

AC:

AN:

226768

AF XY:

0.00000815

show subpopulations

Gnomad AFR exome

AF:

0.000136

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000349

AC:

AN:

1434472

Hom.:

Cov.:

AF XY:

0.00000421

AC XY:

AN XY:

711962

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

32026

American (AMR)

AF:

0.00

AC:

AN:

39702

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25716

East Asian (EAS)

AF:

0.0000265

AC:

AN:

37720

South Asian (SAS)

AF:

0.0000127

AC:

AN:

78696

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53224

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5720

European-Non Finnish (NFE)

AF:

0.00000272

AC:

AN:

1102296

Other (OTH)

AF:

0.00

AC:

AN:

59372

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.425

Heterozygous variant carriers

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:

0.0000460

AC:

AN:

152200

Hom.:

Cov.:

AF XY:

0.0000806

AC XY:

AN XY:

74414

show subpopulations

African (AFR)

AF:

0.0000722

AC:

AN:

41532

American (AMR)

AF:

0.0000654

AC:

AN:

15286

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.000193

AC:

AN:

5172

South Asian (SAS)

AF:

0.00

AC:

AN:

4822

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10592

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000294

AC:

AN:

68004

Other (OTH)

AF:

0.00

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.561

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:

0.00

Hom.:

Bravo

AF:

0.0000113

ExAC

AF:

0.0000247

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

Inborn genetic diseases (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.38

BayesDel_noAF

Benign

-0.54

CADD

Benign

(source)

DANN

Benign

0.95

DEOGEN2

Benign

0.050

Eigen

Benign

-0.56

Eigen_PC

Benign

-0.47

FATHMM_MKL

Benign

0.10

LIST_S2

Uncertain

0.87

M_CAP

Benign

0.016

MetaRNN

Benign

0.040

MetaSVM

Benign

-1.0

MutationAssessor

Benign

-0.34

PhyloP100

1.4

PrimateAI

Benign

0.38

PROVEAN

Benign

-0.77

REVEL

Benign

0.061

Sift

Benign

0.18

Sift4G

Benign

0.18

Polyphen

0.058

Vest4

0.25

MVP

0.082

MPC

0.21

ClinPred

0.078

GERP RS

3.7

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.060

gMVP

0.49

Mutation Taster

=92/8

polymorphism

(source)

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

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