rs147814237

chr6-152143657-G-A

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 1P and 5B. PP2 BP4 BS2

The NM_182961.4(SYNE1):c.25085C>T(p.Thr8362Met) variant causes a missense change. The variant allele was found at a frequency of 0.0000446 in 1,614,072 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. T8362T) has been classified as Likely benign.

• Frequency:
  • Genomes: 𝑓 0.000092 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000040 (0 hom.)
• Consequence: SYNE1 NM_182961.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 6.15

Genes affected

SYNE1 (HGNC:17089): (spectrin repeat containing nuclear envelope protein 1) This gene encodes a spectrin repeat containing protein expressed in skeletal and smooth muscle, and peripheral blood lymphocytes, that localizes to the nuclear membrane. Mutations in this gene have been associated with autosomal recessive spinocerebellar ataxia 8, also referred to as autosomal recessive cerebellar ataxia type 1 or recessive ataxia of Beauce. Alternatively spliced transcript variants encoding different isoforms have been described. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Likely_benign. Variant got -4 ACMG points.

• PP2: Missense variant where missense usually causes diseases, SYNE1
• BP4: Computational evidence support a benign effect (MetaRNN=0.2903782).
• BS2: High AC in GnomAd at 14 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SYNE1	NM_182961.4	c.25085C>T	p.Thr8362Met	missense_variant	138/146	ENST00000367255.10
SYNE1	NM_001347702.2	c.1619C>T	p.Thr540Met	missense_variant	10/18	ENST00000354674.5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SYNE1	ENST00000367255.10	c.25085C>T	p.Thr8362Met	missense_variant	138/146	1	NM_182961.4	P1
SYNE1	ENST00000354674.5	c.1619C>T	p.Thr540Met	missense_variant	10/18	5	NM_001347702.2

Frequencies

GnomAD3 genomes AF: 0.0000920 AC: 14 AN: 152180 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0000655

Gnomad ASJ AF: 0.000288

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000176

Gnomad OTH AF: 0.00

GnomAD3 exomes AF: 0.0000398 AC: 10 AN: 251492 Hom.: 0 AF XY: 0.0000441 AC XY: 6 AN XY: 135922

Gnomad AFR exome AF: 0.0000615

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.0000327

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000703

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000397 AC: 58 AN: 1461892 Hom.: 0 Cov.: 30 AF XY: 0.0000371 AC XY: 27 AN XY: 727246

Gnomad4 AFR exome AF: 0.0000299

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000464

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000468

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome AF: 0.0000920 AC: 14 AN: 152180 Hom.: 0 Cov.: 32 AF XY: 0.000108 AC XY: 8 AN XY: 74352

Gnomad4 AFR AF: 0.00

Gnomad4 AMR AF: 0.0000655

Gnomad4 ASJ AF: 0.000288

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000176

Gnomad4 OTH AF: 0.00

Alfa AF: 0.000123 Hom.: 0

Bravo AF: 0.0000642

ESP6500AA AF: 0.00 AC: 0

ESP6500EA AF: 0.000116 AC: 1

ExAC AF: 0.0000412 AC: 5

EpiCase AF: 0.000327

EpiControl AF: 0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Autosomal recessive ataxia, Beauce type;C2751807:Emery-Dreifuss muscular dystrophy 4, autosomal dominant Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Aug 09, 2022

This sequence change replaces threonine, which is neutral and polar, with methionine, which is neutral and non-polar, at codon 8314 of the SYNE1 protein (p.Thr8314Met). This variant is present in population databases (rs147814237, gnomAD 0.007%). This variant has not been reported in the literature in individuals affected with SYNE1-related conditions. ClinVar contains an entry for this variant (Variation ID: 538379). 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: "Possibly Damaging"; Align-GVGD: "Class C0"). 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
AlphaMissense	Benign	0.10
BayesDel_addAF	Benign	-0.19	T
BayesDel_noAF	Benign	-0.33
Cadd	Uncertain	23
Dann	Uncertain	1.0
DEOGEN2	Benign	0.33	T;.;.;T;T;T;T
Eigen	Uncertain	0.67
Eigen_PC	Uncertain	0.66
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.91	D;D;D;D;D;D;D
M_CAP	Benign	0.035	D
MetaRNN	Benign	0.29	T;T;T;T;T;T;T
MetaSVM	Benign	-0.48	T
MutationAssessor	Uncertain	2.5	M;.;.;.;.;.;.
MutationTaster	Benign	1.0	D;D;D;D;D;D;D;D
PrimateAI	Benign	0.41	T
PROVEAN	Benign	-1.9	N;.;D;N;N;N;D
REVEL	Benign	0.14
Sift	Uncertain	0.028	D;.;T;D;D;D;T
Sift4G	Uncertain	0.0040	D;D;D;D;D;T;T
Polyphen		1.0	D;.;.;.;.;.;.
Vest4		0.24
MVP		0.60
MPC		0.18
ClinPred		0.40	T
GERP RS		5.2
Varity_R		0.092
gMVP		0.37

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs147814237; hg19: chr6-152464792; COSMIC: COSV54979201; COSMIC: COSV54979201;