rs745707616

chr6-152367343-T-Achr6-152367343-T-G

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 3P and 1B. PM2 PP2 BP4

The NM_182961.4(SYNE1):c.9847A>T(p.Asn3283Tyr) variant causes a missense change. The variant allele was found at a frequency of 0.00000137 in 1,461,886 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 (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. N3283H) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: SYNE1 NM_182961.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.89

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 Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant where missense usually causes diseases, SYNE1
• BP4: Computational evidence support a benign effect (MetaRNN=0.27585936).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SYNE1	NM_182961.4	c.9847A>T	p.Asn3283Tyr	missense_variant	62/146	ENST00000367255.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SYNE1	ENST00000367255.10	c.9847A>T	p.Asn3283Tyr	missense_variant	62/146	1	NM_182961.4	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461886 Hom.: 0 Cov.: 31 AF XY: 0.00000275 AC XY: 2 AN XY: 727248

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: 0.00000180

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

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

Mar 22, 2021

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. 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: "Benign"; Align-GVGD: "Class C15"). This variant has not been reported in the literature in individuals with SYNE1-related conditions. This variant is not present in population databases (ExAC no frequency). This sequence change replaces asparagine with tyrosine at codon 3290 of the SYNE1 protein (p.Asn3290Tyr). The asparagine residue is highly conserved and there is a large physicochemical difference between asparagine and tyrosine. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.088
BayesDel_addAF	Benign	-0.057	T
BayesDel_noAF	Benign	-0.32
Cadd	Benign	21
Dann	Uncertain	0.99
DEOGEN2	Uncertain	0.56	D;.;T;T
Eigen	Benign	0.11
Eigen_PC	Benign	0.19
FATHMM_MKL	Uncertain	0.92	D
LIST_S2	Uncertain	0.94	D;D;D;D
M_CAP	Benign	0.023	T
MetaRNN	Benign	0.28	T;T;T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.9	M;.;.;.
MutationTaster	Benign	1.0	N;N;N;N;N
PrimateAI	Benign	0.31	T
PROVEAN	Benign	-2.3	N;D;N;.
REVEL	Benign	0.16
Sift	Uncertain	0.020	D;D;D;.
Sift4G	Uncertain	0.0040	D;D;D;D
Polyphen		0.97	D;.;.;.
Vest4		0.57
MutPred		0.39		Loss of helix (P = 0.079);.;.;.;
MVP		0.55
MPC		0.22
ClinPred		0.91	D
GERP RS		3.7
Varity_R		0.10
gMVP		0.16

Splicing

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr6-152688478;