3-93973667-T-C

Variant names:

Variant summary

Our verdict is Benign. Variant got -7 ACMG points: 0P and 7B. BP4_ModerateBP6BS2

The NM_000313.4(PROS1):c.76+7A>G variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000438 in 1,613,266 control chromosomes in the GnomAD database, including 4 homozygotes. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00054 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00043 ( 4 hom. )

Consequence

PROS1
NM_000313.4 splice_region, intron

Scores

Splicing: ADA: 0.04115

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:3B:4

Conservation

PhyloP100: 3.38

Variant links:

Genes affected

PROS1 (HGNC:9456): (protein S) This gene encodes a vitamin K-dependent plasma protein that functions as a cofactor for the anticoagulant protease, activated protein C (APC) to inhibit blood coagulation. It is found in plasma in both a free, functionally active form and also in an inactive form complexed with C4b-binding protein. Mutations in this gene result in autosomal dominant hereditary thrombophilia. An inactive pseudogene of this locus is located at an adjacent region on chromosome 3. Alternative splicing results in multiple transcript variants encoding different isoforms that may undergo similar processing to generate mature protein. [provided by RefSeq, Oct 2015]

PROS1 links:

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -7 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.29).

BP6

Variant 3-93973667-T-C is Benign according to our data. Variant chr3-93973667-T-C is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 215729.We mark this variant Likely_benign, oryginal submissions are: {Uncertain_significance=3, Benign=2, Likely_benign=1}.

BS2

High Homozygotes in GnomAdExome4 at 4 SD gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PROS1	NM_000313.4 link	c.76+7A>G		splice_region_variant, intron_variant	Intron 1 of 14	ENST00000394236.9	NP_000304.2	P07225A0A0S2Z4K3
PROS1	NM_001314077.2 link	c.76+7A>G		splice_region_variant, intron_variant	Intron 1 of 15		NP_001301006.1	P07225A0A0S2Z4L3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PROS1	ENST00000394236.9 link	c.76+7A>G		splice_region_variant, intron_variant	Intron 1 of 14	1	NM_000313.4	ENSP00000377783.3		P07225

Frequencies

GnomAD3 genomes

AF:

0.000539

AC:

AN:

152218

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.0190

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000206

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.000769

AC:

190

AN:

246970

Hom.:

AF XY:

0.000738

AC XY:

AN XY:

134094

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000583

Gnomad ASJ exome

AF:

0.0163

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000181

Gnomad OTH exome

AF:

0.000825

GnomAD4 exome

AF:

0.000428

AC:

625

AN:

1461048

Hom.:

Cov.:

AF XY:

0.000396

AC XY:

288

AN XY:

726830

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000671

Gnomad4 ASJ exome

AF:

0.0175

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000792

Gnomad4 OTH exome

AF:

0.00129

GnomAD4 genome

AF:

0.000539

AC:

AN:

152218

Hom.:

Cov.:

AF XY:

0.000538

AC XY:

AN XY:

74364

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.0190

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000206

Gnomad4 OTH

AF:

0.000478

Alfa

AF:

0.00148

Hom.:

Bravo

AF:

0.000593

EpiCase

AF:

0.000654

EpiControl

AF:

0.000178

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:3Benign:4

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Thrombophilia due to protein S deficiency, autosomal dominant

Uncertain:1Benign:1

Jun 14, 2016

Illumina Laboratory Services, Illumina

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.76+7A>G variant has been reported in two studies in patients with protein S deficiency in which it was identified in a heterozygous state in one patient who was also heterozygous for the Factor V Leiden variant, and as the only variant in a heterozygous state in four patients including one proband and two first-degree relatives who all showed reduced levels of protein S (Simmonds et al. 1996; Makris et al. 2000; Klostermeier et al. 2015). The c.76+7A>G variant was not found among 70 normal control alleles but is reported at a frequency of is 0.001 in the European (non-Finnish) population of the Exome Aggregation Consortium. The evidence for this variant is limited. The c.76+7A>G variant is therefore classified as a variant of unknown significance but suspicious for pathogenicity for protein S deficiency. -

May 28, 2019

Mendelics

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not provided

Uncertain:1Benign:1

Jun 01, 2024

CeGaT Center for Human Genetics Tuebingen

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

PROS1: BP4 -

Nov 28, 2022

Mayo Clinic Laboratories, Mayo Clinic

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

BS1, PP1 -

Protein S deficiency disease

Uncertain:1

Feb 01, 2019

NIHR Bioresource Rare Diseases, University of Cambridge

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: research

- -

PROS1-related disorder

Benign:1

May 17, 2023

PreventionGenetics, part of Exact Sciences

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Thrombophilia due to protein S deficiency, autosomal recessive

Benign:1

Jan 19, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.29

CADD

Benign

DANN

Benign

0.92

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.041

dbscSNV1_RF

Benign

0.24

SpliceAI score (max)

0.18

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