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chr7-832595-C-T

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Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_001130965.3(SUN1):​c.71C>T​(p.Ala24Val) variant causes a missense change. The variant allele was found at a frequency of 0.00000617 in 1,458,694 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Synonymous variant affecting the same amino acid position (i.e. A24A) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 32)
Exomes 𝑓: 0.0000062 ( 0 hom. )

Consequence

SUN1
NM_001130965.3 missense

Scores

2
8
6

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.86
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 1 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.31880522).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
SUN1NM_001130965.3 linkuse as main transcriptc.71C>T p.Ala24Val missense_variant 1/19 ENST00000401592.6

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
SUN1ENST00000401592.6 linkuse as main transcriptc.71C>T p.Ala24Val missense_variant 1/191 NM_001130965.3 P3O94901-8

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD3 exomes
AF:
0.00000412
AC:
1
AN:
242662
Hom.:
0
AF XY:
0.00000759
AC XY:
1
AN XY:
131766
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:
0.00000912
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000617
AC:
9
AN:
1458694
Hom.:
0
Cov.:
31
AF XY:
0.00000138
AC XY:
1
AN XY:
725252
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.000135
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.0000252
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00000180
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
32
Bravo
AF:
0.00000378

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 testingInvitaeDec 10, 2023This sequence change replaces alanine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 24 of the SUN1 protein (p.Ala24Val). The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This variant has not been reported in the literature in individuals affected with SUN1-related conditions. An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. In 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. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Uncertain
0.12
D
BayesDel_noAF
Uncertain
-0.070
CADD
Pathogenic
28
DANN
Pathogenic
1.0
Eigen
Uncertain
0.47
Eigen_PC
Uncertain
0.50
FATHMM_MKL
Benign
0.40
N
LIST_S2
Pathogenic
0.98
D;D;D;.;D;D;D;D;D;D;D
M_CAP
Benign
0.049
D
MetaRNN
Benign
0.32
T;T;T;T;T;T;T;T;T;T;T
MetaSVM
Benign
-0.40
T
MutationTaster
Benign
0.99
D;D;D;D;D;D;D;N
PrimateAI
Uncertain
0.68
T
PROVEAN
Uncertain
-3.7
D;D;D;D;D;D;D;D;D;D;D
REVEL
Benign
0.26
Sift
Uncertain
0.0030
D;D;D;D;D;D;D;D;D;D;D
Sift4G
Uncertain
0.0030
D;D;D;D;D;D;D;D;D;D;D
Vest4
0.79
MutPred
0.27
.;Loss of disorder (P = 0.1065);Loss of disorder (P = 0.1065);Loss of disorder (P = 0.1065);Loss of disorder (P = 0.1065);Loss of disorder (P = 0.1065);Loss of disorder (P = 0.1065);Loss of disorder (P = 0.1065);Loss of disorder (P = 0.1065);Loss of disorder (P = 0.1065);Loss of disorder (P = 0.1065);
MVP
0.29
MPC
0.46
ClinPred
0.95
D
GERP RS
5.0
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.7
gMVP
0.33

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.020
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: rs1278902056; hg19: chr7-872232; API