rs7271776

Positions:

chr20-36946776-A-G

Variant summary

Our verdict is Benign. Variant got -17 ACMG points: 0P and 17B. BP4_StrongBP6_Very_StrongBP7BS1

The NM_015474.4(SAMHD1):c.237T>C(p.Pro79=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000343 in 1,613,284 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0019 ( 1 hom., cov: 32)

Exomes 𝑓: 0.00018 ( 1 hom. )

Consequence

SAMHD1
NM_015474.4 synonymous

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:7

Conservation

PhyloP100: 0.142

Variant links:

Genes affected

SAMHD1 (HGNC:15925): (SAM and HD domain containing deoxynucleoside triphosphate triphosphohydrolase 1) This gene may play a role in regulation of the innate immune response. The encoded protein is upregulated in response to viral infection and may be involved in mediation of tumor necrosis factor-alpha proinflammatory responses. Mutations in this gene have been associated with Aicardi-Goutieres syndrome. [provided by RefSeq, Mar 2010]

SAMHD1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -17 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.92).

BP6

Variant 20-36946776-A-G is Benign according to our data. Variant chr20-36946776-A-G is described in ClinVar as [Likely_benign]. Clinvar id is 448231.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr20-36946776-A-G is described in Lovd as [Likely_benign].

BP7

Synonymous conserved (PhyloP=0.142 with no splicing effect.

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00188 (287/152360) while in subpopulation AFR AF= 0.00642 (267/41590). AF 95% confidence interval is 0.00579. There are 1 homozygotes in gnomad4. There are 134 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
SAMHD1	NM_015474.4 linkuse as main transcript	c.237T>C	p.Pro79=	synonymous_variant	2/16	ENST00000646673.2	NP_056289.2
SAMHD1	NM_001363729.2 linkuse as main transcript	c.237T>C	p.Pro79=	synonymous_variant	2/15		NP_001350658.1
SAMHD1	NM_001363733.2 linkuse as main transcript	c.237T>C	p.Pro79=	synonymous_variant	2/16		NP_001350662.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SAMHD1	ENST00000646673.2 linkuse as main transcript	c.237T>C	p.Pro79=	synonymous_variant	2/16		NM_015474.4	ENSP00000493536	P1	Q9Y3Z3-1

Frequencies

GnomAD3 genomes

AF:

0.00187

AC:

285

AN:

152242

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00639

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00105

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:

0.0000147

Gnomad OTH

AF:

0.00143

GnomAD3 exomes

AF:

0.000431

AC:

108

AN:

250488

Hom.:

AF XY:

0.000355

AC XY:

AN XY:

135370

show subpopulations

Gnomad AFR exome

AF:

0.00605

Gnomad AMR exome

AF:

0.000261

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:

0.00000884

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000182

AC:

266

AN:

1460924

Hom.:

Cov.:

AF XY:

0.000165

AC XY:

120

AN XY:

726738

show subpopulations

Gnomad4 AFR exome

AF:

0.00660

Gnomad4 AMR exome

AF:

0.000336

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:

0.00000270

Gnomad4 OTH exome

AF:

0.000447

GnomAD4 genome

AF:

0.00188

AC:

287

AN:

152360

Hom.:

Cov.:

AF XY:

0.00180

AC XY:

134

AN XY:

74506

show subpopulations

Gnomad4 AFR

AF:

0.00642

Gnomad4 AMR

AF:

0.00105

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00142

Alfa

AF:

0.000519

Hom.:

Bravo

AF:

0.00219

Asia WGS

AF:

0.000577

AC:

AN:

3478

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:7

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:3

Likely benign, no assertion criteria provided	clinical testing	Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center	-	- -
Likely benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -
Likely benign, no assertion criteria provided	clinical testing	Genome Diagnostics Laboratory, University Medical Center Utrecht	-	- -

not specified

Benign:2

Likely benign, criteria provided, single submitter	clinical testing	Athena Diagnostics	Sep 21, 2016	- -
Likely benign, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Apr 12, 2018	- -

Aicardi Goutieres syndrome

Benign:1

Likely benign, no assertion criteria provided

clinical testing

Natera, Inc.

Feb 26, 2021

- -

Aicardi-Goutieres syndrome 5

Benign:1

Benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 28, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.92

CADD

Benign

9.2

DANN

Benign

0.61

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