Genetic Variant STEEP1:p.Val120Val (chrX-119544416-G-C) – ACMG Classification: Benign (-11 pts)

Variant summary

Our verdict is Benign. Variant got -11 ACMG points: 0P and 11B. BP4_StrongBP6_ModerateBP7BS2

The NM_022101.4(STEEP1):c.360C>G(p.Val120Val) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000995 in 1,205,494 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 2 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.000027 ( 0 hom., 0 hem., cov: 23)

Exomes 𝑓: 0.0000082 ( 0 hom. 2 hem. )

Consequence

STEEP1
NM_022101.4 synonymous

Scores

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: 2.42

Variant links:

Genes affected

STEEP1 (HGNC:26239): (STING1 ER exit protein 1) While this gene is well-supported by transcript data, no functional information on its protein products is currently available. Three transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Dec 2009]

STEEP1 links:

UBE2A (HGNC:12472): (ubiquitin conjugating enzyme E2 A) The modification of proteins with ubiquitin is an important cellular mechanism for targeting abnormal or short-lived proteins for degradation. Ubiquitination involves at least three classes of enzymes: ubiquitin-activating enzymes, ubiquitin-conjugating enzymes, and ubiquitin-protein ligases. This gene encodes a member of the E2 ubiquitin-conjugating enzyme family. This enzyme is required for post-replicative DNA damage repair, and may play a role in transcriptional regulation. Mutations in this gene are associated with cognitive disability. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Aug 2013]

UBE2A links:

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -11 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.48).

BP6

Variant X-119544416-G-C is Benign according to our data. Variant chrX-119544416-G-C is described in ClinVar as [Likely_benign]. Clinvar id is 3257305.Status of the report is criteria_provided_single_submitter, 1 stars.

BP7

Synonymous conserved (PhyloP=2.42 with no splicing effect.

BS2

High Hemizygotes in GnomAdExome4 at 2 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
STEEP1	NM_022101.4 link	c.360C>G	p.Val120Val	synonymous_variant	Exon 4 of 7	ENST00000644802.2	NP_071384.1	Q9H5V9-1
STEEP1	NM_001170570.2 link	c.318C>G	p.Val106Val	synonymous_variant	Exon 3 of 6		NP_001164041.1	Q9H5V9-3
STEEP1	NM_001170569.1 link	c.213C>G	p.Val71Val	synonymous_variant	Exon 4 of 7		NP_001164040.1	Q9H5V9-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
STEEP1	ENST00000644802.2 link	c.360C>G	p.Val120Val	synonymous_variant	Exon 4 of 7		NM_022101.4	ENSP00000494123.2		Q9H5V9-1

Frequencies

GnomAD3 genomes

AF:

0.0000269

AC:

AN:

111400

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

33602

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.000757

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000188

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000273

AC:

AN:

183399

Hom.:

AF XY:

0.0000147

AC XY:

AN XY:

67833

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.000534

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000122

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000823

AC:

AN:

1094094

Hom.:

Cov.:

AF XY:

0.00000556

AC XY:

AN XY:

359520

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.000258

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000477

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000269

AC:

AN:

111400

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

33602

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.000757

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000188

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000712

Hom.:

Bravo

AF:

0.0000151

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Benign:1

Jul 01, 2024

CeGaT Center for Human Genetics Tuebingen

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

STEEP1: BP4, BP7 -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.48

CADD

Benign

7.5

DANN

Benign

0.81

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