Genetic Variant SUN1:p.Ala689Ala (chr7-869435-C-T) – ACMG Classification: Likely_benign (-5 pts)

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 0P and 5B. BP4_ModerateBP6_ModerateBP7

The NM_001130965.3(SUN1):c.2067C>T(p.Ala689Ala) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00031 in 1,613,888 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

Frequency

Genomes: 𝑓 0.0017 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00017 ( 1 hom. )

Consequence

SUN1
NM_001130965.3 synonymous

Scores

Clinical Significance

Benign criteria provided, single submitter B:2

Conservation

PhyloP100: 0.0320

Publications

2 publications found

Variant links:

Genes affected

SUN1 (HGNC:18587): (Sad1 and UNC84 domain containing 1) This gene is a member of the unc-84 homolog family and encodes a nuclear envelope protein with an Unc84 (SUN) domain. The protein is involved in nuclear anchorage and migration. Alternatively spliced transcript variants have been described. [provided by RefSeq, Jan 2019]

SUN1 links:

LOC124901568 (HGNC:):

LOC124901568 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -5 ACMG points.

BP4

Computational evidence support a benign effect (REVEL=0.026).

BP6

Variant 7-869435-C-T is Benign according to our data. Variant chr7-869435-C-T is described in ClinVar as Benign. ClinVar VariationId is 461647.Status of the report is criteria_provided_single_submitter, 1 stars.

BP7

Synonymous conserved (PhyloP=0.032 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001130965.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
SUN1	NM_001130965.3	MANE Select	c.2067C>T	p.Ala689Ala	synonymous	Exon 17 of 19	NP_001124437.1
SUN1	NM_001367651.1		c.2481C>T	p.Ala827Ala	synonymous	Exon 20 of 22	NP_001354580.1
SUN1	NM_001367705.1		c.2460C>T	p.Ala820Ala	synonymous	Exon 21 of 23	NP_001354634.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
SUN1	ENST00000401592.6	TSL:1 MANE Select	c.2067C>T	p.Ala689Ala	synonymous	Exon 17 of 19	ENSP00000384015.1
SUN1	ENST00000429178.5	TSL:1	c.1842C>T	p.Ala614Ala	synonymous	Exon 15 of 17	ENSP00000409909.1
SUN1	ENST00000475971.5	TSL:1	n.2176C>T		non_coding_transcript_exon	Exon 8 of 10

Frequencies

GnomAD3 genomes

AF:

0.00167

AC:

254

AN:

152056

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00600

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:

0.0000588

Gnomad OTH

AF:

0.000956

GnomAD2 exomes

AF:

0.000437

AC:

109

AN:

249386

AF XY:

0.000355

show subpopulations

Gnomad AFR exome

AF:

0.00652

Gnomad AMR exome

AF:

0.0000580

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000442

Gnomad OTH exome

AF:

0.000165

GnomAD4 exome

AF:

0.000168

AC:

245

AN:

1461714

Hom.:

Cov.:

AF XY:

0.000153

AC XY:

111

AN XY:

727174

show subpopulations

African (AFR)

AF:

0.00559

AC:

187

AN:

33476

American (AMR)

AF:

0.000134

AC:

AN:

44714

Ashkenazi Jewish (ASJ)

AF:

0.0000383

AC:

AN:

26122

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.0000348

AC:

AN:

86256

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53406

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5764

European-Non Finnish (NFE)

AF:

0.0000279

AC:

AN:

1111894

Other (OTH)

AF:

0.000282

AC:

AN:

60382

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.482

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

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:

0.00168

AC:

255

AN:

152174

Hom.:

Cov.:

AF XY:

0.00153

AC XY:

114

AN XY:

74410

show subpopulations

African (AFR)

AF:

0.00600

AC:

249

AN:

41486

American (AMR)

AF:

0.00

AC:

AN:

15294

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3466

East Asian (EAS)

AF:

0.00

AC:

AN:

5180

South Asian (SAS)

AF:

0.00

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10614

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000588

AC:

AN:

67988

Other (OTH)

AF:

0.000946

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.491

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:

0.000631

Hom.:

Bravo

AF:

0.00161

EpiCase

AF:

0.0000545

EpiControl

AF:

0.0000594

ClinVar

Significance: Benign

Submissions summary: Benign:2

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Emery-Dreifuss muscular dystrophy

Benign:1

Oct 29, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

SUN1-related disorder

Benign:1

Dec 26, 2019

PreventionGenetics, part of Exact Sciences

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications).

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.68

CADD

Benign

5.8

(source)

DANN

Benign

0.40

PhyloP100

0.032

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

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

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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

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over