Variant 15-99105550-G-C details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The ENST00000336292.11(SYNM):c.351G>C(p.Gln117His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000829 in 1,206,130 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/18 in silico tools predict 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. Q117L) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000076 ( 0 hom. )

Consequence

SYNM
ENST00000336292.11 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.511

Variant links:

Genes affected

SYNM (HGNC:24466): (synemin) The protein encoded by this gene is an intermediate filament (IF) family member. IF proteins are cytoskeletal proteins that confer resistance to mechanical stress and are encoded by a dispersed multigene family. This protein has been found to form a linkage between desmin, which is a subunit of the IF network, and the extracellular matrix, and provides an important structural support in muscle. Two alternatively spliced variants encoding different isoforms have been described for this gene. [provided by RefSeq, Jul 2008]

SYNM links:

SYNM-AS1 (HGNC:55421): (SYNM antisense RNA 1)

SYNM-AS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -6 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.23734808).

BS2

High AC in GnomAdExome4 at 8 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SYNM	NM_145728.3 linkuse as main transcript	c.351G>C	p.Gln117His	missense_variant	1/4	ENST00000336292.11	NP_663780.2
SYNM-AS1	XR_001751810.2 linkuse as main transcript	n.84+2255C>G		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SYNM	ENST00000336292.11 linkuse as main transcript	c.351G>C	p.Gln117His	missense_variant	1/4	1	NM_145728.3	ENSP00000336775	P3	O15061-1
SYNM-AS1	ENST00000559468.1 linkuse as main transcript	n.137+138C>G		intron_variant, non_coding_transcript_variant		4

Frequencies

GnomAD3 genomes

AF:

0.0000134

AC:

AN:

149218

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000243

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000666

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:

0.00000757

AC:

AN:

1056912

Hom.:

Cov.:

AF XY:

0.00000595

AC XY:

AN XY:

504028

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000695

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:

0.00000220

Gnomad4 OTH exome

AF:

0.0000245

GnomAD4 genome

AF:

0.0000134

AC:

AN:

149218

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

72734

show subpopulations

Gnomad4 AFR

AF:

0.0000243

Gnomad4 AMR

AF:

0.0000666

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 submitter

clinical testing

Ambry Genetics

Dec 02, 2021

The c.351G>C (p.Q117H) alteration is located in exon 1 (coding exon 1) of the SYNM gene. This alteration results from a G to C substitution at nucleotide position 351, causing the glutamine (Q) at amino acid position 117 to be replaced by a histidine (H). 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

0.26

BayesDel_addAF

Benign

-0.075

BayesDel_noAF

Benign

-0.34

CADD

Benign

DANN

Uncertain

0.98

DEOGEN2

Benign

0.32

.;T;T

Eigen

Benign

-0.82

Eigen_PC

Benign

-0.78

FATHMM_MKL

Benign

0.17

LIST_S2

Benign

0.52

.;T;T

M_CAP

Pathogenic

0.96

MetaRNN

Benign

0.24

T;T;T

MetaSVM

Benign

-0.62

MutationTaster

Benign

1.0

D;N;N

PrimateAI

Pathogenic

0.89

PROVEAN

Benign

-0.84

N;N;.

REVEL

Benign

0.18

Sift

Benign

0.044

D;T;.

Sift4G

Uncertain

0.026

D;D;D

Polyphen

0.0

.;B;.

Vest4

0.090

MutPred

0.59

Loss of MoRF binding (P = 0.1564);Loss of MoRF binding (P = 0.1564);Loss of MoRF binding (P = 0.1564);

MVP

0.81

MPC

0.14

ClinPred

0.060

GERP RS

0.086

gMVP

0.38

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over