Genetic Variant SRRM4:p.Arg117Trp (chr12-119114348-C-T) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_194286.4(SRRM4):c.349C>T(p.Arg117Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000018 in 1,607,754 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. R117Q) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000017 ( 0 hom. )

Consequence

SRRM4
NM_194286.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.889

Variant links:

Genes affected

SRRM4 (HGNC:29389): (serine/arginine repetitive matrix 4) SRRM4 promotes alternative splicing and inclusion of neural-specific exons in target mRNAs (Calarco et al., 2009 [PubMed 19737518]).[supplied by OMIM, Oct 2009]

SRRM4 links:

ENSG00000257095 (HGNC:):

ENSG00000257095 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.37497458).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SRRM4	NM_194286.4 link	c.349C>T	p.Arg117Trp	missense_variant	Exon 3 of 13	ENST00000267260.5	NP_919262.2	A7MD48V5T9A0
LOC105370021	XR_945429.3 link	n.147+2539G>A		intron_variant	Intron 2 of 2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
SRRM4	ENST00000267260.5 link	c.349C>T	p.Arg117Trp	missense_variant	Exon 3 of 13	1	NM_194286.4	ENSP00000267260.4	A7MD48
SRRM4	ENST00000545224.5 link	n.124C>T		non_coding_transcript_exon_variant	Exon 2 of 7	4
ENSG00000257095	ENST00000537730.1 link	n.75+2539G>A		intron_variant	Intron 1 of 3	3

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152068

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

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:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000168

AC:

AN:

238732

Hom.:

AF XY:

0.0000232

AC XY:

AN XY:

129108

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000575

Gnomad SAS exome

AF:

0.0000700

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000924

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000172

AC:

AN:

1455686

Hom.:

Cov.:

AF XY:

0.0000180

AC XY:

AN XY:

723374

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000227

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000253

Gnomad4 SAS exome

AF:

0.0000709

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000153

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152068

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74264

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.0000655

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000772

Hom.:

Bravo

AF:

0.0000453

ExAC

AF:

0.0000248

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Apr 23, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.349C>T (p.R117W) alteration is located in exon 3 (coding exon 3) of the SRRM4 gene. This alteration results from a C to T substitution at nucleotide position 349, causing the arginine (R) at amino acid position 117 to be replaced by a tryptophan (W). 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

0.27

BayesDel_addAF

Benign

-0.21

BayesDel_noAF

Benign

-0.36

CADD

Benign

DANN

Uncertain

0.98

DEOGEN2

Benign

0.18

Eigen

Benign

0.10

Eigen_PC

Benign

0.0070

FATHMM_MKL

Benign

0.49

LIST_S2

Uncertain

0.88

M_CAP

Benign

0.021

MetaRNN

Benign

0.37

MetaSVM

Benign

-0.83

MutationAssessor

Uncertain

2.1

PrimateAI

Uncertain

0.67

PROVEAN

Pathogenic

-4.8

REVEL

Benign

0.16

Sift

Uncertain

0.0010

Sift4G

Pathogenic

0.0010

Polyphen

1.0

Vest4

0.50

MVP

0.16

MPC

0.16

ClinPred

0.87

GERP RS

2.7

Varity_R

0.28

gMVP

0.10

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