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rs755364227

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_001130965.3(SUN1):​c.2348C>A​(p.Pro783His) variant causes a missense change. The variant allele was found at a frequency of 0.00000558 in 1,613,870 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 34)
Exomes 𝑓: 0.0000041 ( 0 hom. )

Consequence

SUN1
NM_001130965.3 missense

Scores

3
6
6

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.76
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]

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2
Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
SUN1NM_001130965.3 linkuse as main transcriptc.2348C>A p.Pro783His missense_variant 19/19 ENST00000401592.6

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
SUN1ENST00000401592.6 linkuse as main transcriptc.2348C>A p.Pro783His missense_variant 19/191 NM_001130965.3 P3O94901-8

Frequencies

GnomAD3 genomes
AF:
0.0000197
AC:
3
AN:
152234
Hom.:
0
Cov.:
34
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:
0.0000294
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.0000120
AC:
3
AN:
249472
Hom.:
0
AF XY:
0.0000148
AC XY:
2
AN XY:
135344
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000265
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000410
AC:
6
AN:
1461636
Hom.:
0
Cov.:
30
AF XY:
0.00000825
AC XY:
6
AN XY:
727122
show subpopulations
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:
0.00000540
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
AF:
0.0000197
AC:
3
AN:
152234
Hom.:
0
Cov.:
34
AF XY:
0.0000269
AC XY:
2
AN XY:
74374
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:
0.0000294
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.0000282
Hom.:
0
Bravo
AF:
0.00000378
ExAC
AF:
0.0000331
AC:
4

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Emery-Dreifuss muscular dystrophy Uncertain:1
Uncertain significance, criteria provided, single submitterclinical testingInvitaeMar 18, 2022In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C0"). ClinVar contains an entry for this variant (Variation ID: 570996). This variant has not been reported in the literature in individuals affected with SUN1-related conditions. This variant is present in population databases (rs755364227, gnomAD 0.003%). This sequence change replaces proline, which is neutral and non-polar, with histidine, which is basic and polar, at codon 783 of the SUN1 protein (p.Pro783His). -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Benign
-0.013
T
BayesDel_noAF
Benign
-0.19
CADD
Uncertain
24
DANN
Uncertain
0.99
Eigen
Uncertain
0.55
Eigen_PC
Uncertain
0.40
FATHMM_MKL
Uncertain
0.95
D
M_CAP
Benign
0.051
D
MetaRNN
Uncertain
0.74
D;D;D;D;D;D
MetaSVM
Benign
-0.49
T
MutationTaster
Benign
1.0
D;D;D;D;D;D;D
PrimateAI
Uncertain
0.50
T
PROVEAN
Pathogenic
-7.5
D;D;D;D;D;D
REVEL
Benign
0.28
Sift
Pathogenic
0.0
D;D;D;D;D;D
Sift4G
Pathogenic
0.0
D;D;D;D;D;D
Polyphen
1.0
D;.;.;.;D;.
Vest4
0.64
MVP
0.29
MPC
1.8
ClinPred
1.0
D
GERP RS
4.6
gMVP
0.90

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.

Other links and lift over

dbSNP: rs755364227; hg19: chr7-912958; API