Variant X-21941076-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Benign. Variant got -10 ACMG points: 0P and 10B. BP4_StrongBP6_ModerateBS2

The NM_004595.5(SMS):c.49+203G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000203 in 108,389 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 8 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 0.00020 ( 0 hom., 8 hem., cov: 22)

Exomes 𝑓: 0.0 ( 0 hom. 0 hem. )

Failed GnomAD Quality Control

Consequence

SMS
NM_004595.5 intron

Scores

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: -1.12

Variant links:

Genes affected

SMS (HGNC:11123): (spermine synthase) This gene encodes a protein belonging to the spermidine/spermin synthase family and catalyzes the production of spermine from spermidine. Pseudogenes of this gene are located on chromosomes 1, 5, 6 and X. Mutations in this gene cause an X-linked intellectual disability called Snyder-Robinson Syndrome (SRS). Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2017]

SMS links:

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -10 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.89).

BP6

Variant X-21941076-G-A is Benign according to our data. Variant chrX-21941076-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 2660157.Status of the report is criteria_provided_single_submitter, 1 stars.

BS2

High Hemizygotes in GnomAd4 at 8 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	Effect	#exon/exons	MANE	Protein
SMS	NM_004595.5 linkuse as main transcript	c.49+203G>A	intron_variant		ENST00000404933.7	NP_004586.2
SMS	XM_011545568.3 linkuse as main transcript	c.-345G>A	5_prime_UTR_variant	1/11		XP_011543870.1
SMS	NM_001258423.2 linkuse as main transcript	c.49+203G>A	intron_variant			NP_001245352.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SMS	ENST00000404933.7 linkuse as main transcript	c.49+203G>A		intron_variant		1	NM_004595.5	ENSP00000385746	P1	P52788-1
SMS	ENST00000457085.2 linkuse as main transcript	c.103G>A	p.Ala35Thr	missense_variant	1/6	5		ENSP00000407366
SMS	ENST00000379404.5 linkuse as main transcript	c.49+203G>A		intron_variant		3		ENSP00000368714		P52788-2
SMS	ENST00000478094.1 linkuse as main transcript	n.96+203G>A		intron_variant, non_coding_transcript_variant		4

Frequencies

GnomAD3 genomes

AF:

0.000203

AC:

AN:

108389

Hom.:

Cov.:

AF XY:

0.000243

AC XY:

AN XY:

32935

show subpopulations

Gnomad AFR

AF:

0.0000653

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000953

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.000434

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000330

Gnomad OTH

AF:

0.00

GnomAD4 exome

Data not reliable, filtered out with message: AC0

AF:

0.00

AC:

AN:

2316

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

398

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

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:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.000203

AC:

AN:

108389

Hom.:

Cov.:

AF XY:

0.000243

AC XY:

AN XY:

32935

show subpopulations

Gnomad4 AFR

AF:

0.0000653

Gnomad4 AMR

AF:

0.0000953

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.000434

Gnomad4 NFE

AF:

0.000330

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000108

Hom.:

Bravo

AF:

0.000159

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

CeGaT Center for Human Genetics Tuebingen

Jan 01, 2023

SMS: BS2 -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.89

CADD

Benign

2.5

DANN

Benign

0.78

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.3

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