Genetic Variant STMND1:p.Arg103Gln (chr6-17120655-G-A) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_001190766.2(STMND1):c.308G>A(p.Arg103Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000508 in 1,535,070 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/17 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000079 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000048 ( 0 hom. )

Consequence

STMND1
NM_001190766.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.0500

Variant links:

Genes affected

STMND1 (HGNC:44668): (stathmin domain containing 1) Predicted to enable tubulin binding activity. Predicted to be involved in microtubule depolymerization; neuron projection development; and regulation of microtubule polymerization or depolymerization. Predicted to be active in cytoplasm and neuron projection. [provided by Alliance of Genome Resources, Apr 2022]

STMND1 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.04274261).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
STMND1	NM_001190766.2 link	c.308G>A	p.Arg103Gln	missense_variant	Exon 3 of 5	ENST00000536551.6	NP_001177695.1	H3BQB6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
STMND1	ENST00000536551.6 link	c.308G>A	p.Arg103Gln	missense_variant	Exon 3 of 5	5	NM_001190766.2	ENSP00000455698.1		H3BQB6
STMND1	ENST00000354384.5 link	c.284G>A	p.Arg95Gln	missense_variant	Exon 3 of 5	5		ENSP00000454363.1		H3BMF7

Frequencies

GnomAD3 genomes

AF:

0.0000789

AC:

AN:

152062

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.000176

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000448

AC:

AN:

133986

Hom.:

AF XY:

0.0000548

AC XY:

AN XY:

72978

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000412

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000951

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000477

AC:

AN:

1383008

Hom.:

Cov.:

AF XY:

0.0000469

AC XY:

AN XY:

682426

show subpopulations

Gnomad4 AFR exome

AF:

0.0000317

Gnomad4 AMR exome

AF:

0.0000281

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000127

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000584

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000789

AC:

AN:

152062

Hom.:

Cov.:

AF XY:

0.0000673

AC XY:

AN XY:

74264

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

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:

0.000130

Hom.:

Bravo

AF:

0.0000642

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000519

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Feb 17, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.308G>A (p.R103Q) alteration is located in exon 3 (coding exon 3) of the STMND1 gene. This alteration results from a G to A substitution at nucleotide position 308, causing the arginine (R) at amino acid position 103 to be replaced by a glutamine (Q). 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

0.089

BayesDel_addAF

Benign

-0.37

BayesDel_noAF

Benign

-0.57

CADD

Benign

5.0

DANN

Benign

0.90

DEOGEN2

Benign

0.0087

T;.

FATHMM_MKL

Benign

0.060

LIST_S2

Benign

0.59

T;T

M_CAP

Benign

0.014

MetaRNN

Benign

0.043

T;T

MutationAssessor

Benign

0.48

N;.

PrimateAI

Benign

0.22

PROVEAN

Benign

-0.38

N;N

Sift

Benign

0.55

T;T

Sift4G

Benign

0.42

T;T

Vest4

0.080

MVP

0.22

GERP RS

2.5

Varity_R

0.028

gMVP

0.066

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