1-32695130-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_030786.3(SYNC):​c.968G>A​(p.Arg323Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000497 in 1,609,770 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict 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. R323R) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 31)
Exomes 𝑓: 0.0000034 ( 0 hom. )

Consequence

SYNC
NM_030786.3 missense

Scores

2
17

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.11
Variant links:
Genes affected
SYNC (HGNC:28897): (syncoilin, intermediate filament protein) This gene encodes a member of the intermediate filament family which contains an N-terminal head domain, followed by a central coiled-coil region and a short C-terminal tail. The protein is highly expressed in skeletal and cardiac muscle. The protein links the dystrophin associated protein complex (DAPC) to desmin filaments in muscle and may have a structural role in striated muscle. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jun 2009]

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.16186509).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
SYNCNM_030786.3 linkuse as main transcriptc.968G>A p.Arg323Gln missense_variant 2/5 ENST00000409190.8 NP_110413.3 Q9H7C4-1

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
SYNCENST00000409190.8 linkuse as main transcriptc.968G>A p.Arg323Gln missense_variant 2/52 NM_030786.3 ENSP00000386439.3 Q9H7C4-1
SYNCENST00000373484.4 linkuse as main transcriptc.968G>A p.Arg323Gln missense_variant 2/42 ENSP00000362583.3 Q9H7C4-2

Frequencies

GnomAD3 genomes
AF:
0.0000197
AC:
3
AN:
152030
Hom.:
0
Cov.:
31
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.000197
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:
0.00
Gnomad OTH
AF:
0.00
GnomAD4 exome
AF:
0.00000343
AC:
5
AN:
1457740
Hom.:
0
Cov.:
30
AF XY:
0.00000414
AC XY:
3
AN XY:
725008
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:
0.00000450
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
AF:
0.0000197
AC:
3
AN:
152030
Hom.:
0
Cov.:
31
AF XY:
0.0000135
AC XY:
1
AN XY:
74262
show subpopulations
Gnomad4 AFR
AF:
0.00
Gnomad4 AMR
AF:
0.000197
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.00
Gnomad4 OTH
AF:
0.00

ClinVar

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

Submissions by phenotype

not specified Uncertain:1
Uncertain significance, criteria provided, single submitterclinical testingAmbry GeneticsJul 14, 2021The c.968G>A (p.R323Q) alteration is located in exon 2 (coding exon 2) of the SYNC gene. This alteration results from a G to A substitution at nucleotide position 968, causing the arginine (R) at amino acid position 323 to be replaced by a glutamine (Q). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.087
BayesDel_addAF
Benign
-0.020
T
BayesDel_noAF
Benign
-0.27
CADD
Benign
18
DANN
Uncertain
0.99
DEOGEN2
Benign
0.20
T;.
Eigen
Benign
-0.51
Eigen_PC
Benign
-0.44
FATHMM_MKL
Benign
0.74
D
LIST_S2
Uncertain
0.86
D;D
M_CAP
Benign
0.041
D
MetaRNN
Benign
0.16
T;T
MetaSVM
Benign
-0.58
T
MutationAssessor
Benign
0.69
N;N
PrimateAI
Benign
0.23
T
PROVEAN
Benign
-0.41
N;N
REVEL
Benign
0.15
Sift
Benign
0.29
T;T
Sift4G
Benign
0.21
T;T
Polyphen
0.26
B;B
Vest4
0.18
MutPred
0.49
Loss of MoRF binding (P = 0.0269);Loss of MoRF binding (P = 0.0269);
MVP
0.57
MPC
0.54
ClinPred
0.33
T
GERP RS
-0.93
Varity_R
0.086
gMVP
0.18

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: rs909486368; hg19: chr1-33160731; API