chr6-152225723-T-C

Variant names:

• chr6-152225723-T-C
• rs766914765
• NM_182961.4:c.21349A>G

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_182961.4(SYNE1):​c.21349A>G​(p.Met7117Val) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000041 in 1,461,826 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/23 in silico tools predict a benign outcome for this variant. 2/2 splice prediction tools predict no significant impact on normal splicing. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. M7117L) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000041 (0 hom.)
• Consequence: SYNE1 NM_182961.4 missense, splice_region
• Scores: Splicing: ADA: 0.001621
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.484
• Publications: 0 publications found

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]

SYNE1 Gene-Disease associations (from GenCC):

• autosomal recessive ataxia, Beauce type

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Laboratory for Molecular Medicine, Ambry Genetics, Orphanet, PanelApp Australia, G2P
• Emery-Dreifuss muscular dystrophy 4, autosomal dominant

  Inheritance: AD Classification: STRONG, MODERATE, LIMITED Submitted by: Illumina, Ambry Genetics, PanelApp Australia, Labcorp Genetics (formerly Invitae)
• arthrogryposis multiplex congenita 3, myogenic type

  Inheritance: AR Classification: STRONG, MODERATE Submitted by: PanelApp Australia, Labcorp Genetics (formerly Invitae)
• autosomal dominant Emery-Dreifuss muscular dystrophy

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• autosomal recessive myogenic arthrogryposis multiplex congenita

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.10930374).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_182961.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SYNE1	NM_182961.4	MANE Select	c.21349A>G	p.Met7117Val	missense splice_region	Exon 116 of 146	NP_892006.3	Q8NF91-1
	SYNE1	NM_033071.5		c.21136A>G	p.Met7046Val	missense splice_region	Exon 115 of 146	NP_149062.2	Q8NF91-4

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SYNE1	ENST00000367255.10	TSL:1 MANE Select	c.21349A>G	p.Met7117Val	missense splice_region	Exon 116 of 146	ENSP00000356224.5	Q8NF91-1
	SYNE1	ENST00000423061.6	TSL:1	c.21136A>G	p.Met7046Val	missense splice_region	Exon 115 of 146	ENSP00000396024.1	A0A0C4DG40
	SYNE1	ENST00000367251.7	TSL:1	c.115A>G	p.Met39Val	missense splice_region	Exon 1 of 31	ENSP00000356220.3	H0Y325

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000410 AC: 6 AN: 1461826 Hom.: 0 Cov.: 31 AF XY: 0.00000275 AC XY: 2 AN XY: 727222

African (AFR) AF: 0.00 AC: 0 AN: 33474

American (AMR) AF: 0.00 AC: 0 AN: 44722

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26134

East Asian (EAS) AF: 0.00 AC: 0 AN: 39694

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53410

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00000540 AC: 6 AN: 1111972

Other (OTH) AF: 0.00 AC: 0 AN: 60394

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.085
BayesDel_addAF	Benign	-0.17	T
BayesDel_noAF	Benign	-0.48
CADD	Benign	12
DANN	Benign	0.29
DEOGEN2	Benign	0.17	T
Eigen	Benign	-0.33
Eigen_PC	Benign	-0.25
FATHMM_MKL	Uncertain	0.84	D
LIST_S2	Uncertain	0.86	D
M_CAP	Benign	0.0092	T
MetaRNN	Benign	0.11	T
MetaSVM	Benign	-1.1	T
MutationAssessor	Uncertain	2.0	M
PhyloP100		0.48
PrimateAI	Benign	0.26	T
PROVEAN	Benign	-2.1	N
REVEL	Benign	0.038
Sift	Benign	0.17	T
Sift4G	Benign	0.088	T
Polyphen		0.011	B
Vest4		0.22
MutPred		0.45		Gain of ubiquitination at K7122 (P = 0.1278)
MVP		0.44
MPC		0.14
ClinPred		0.50	D
GERP RS		3.1
PromoterAI		0.099	Neutral
Varity_R		0.11
gMVP		0.24
Mutation Taster		=78/22	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.0016
dbscSNV1_RF	Benign	0.22

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

Other links and lift over

dbSNP: rs766914765; hg19: chr6-152546858;