NM_000313.4:c.1991dupA

Variant names:

• chr3-93874284-G-GT
• rs1553808038
• NM_000313.4:c.1991dupA

Variant summary

Our verdict is Likely pathogenic. The variant received 8 ACMG points: 8P and 0B. PVS1_Strong PM2 PP5_Moderate

The NM_000313.4(PROS1):​c.1991dupA​(p.His664GlnfsTer35) variant causes a frameshift change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Pathogenic (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: PROS1 NM_000313.4 frameshift
• Clinical Significance: Pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 4.94
• Publications: 0 publications found

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 Gene-Disease associations (from GenCC):

• thrombophilia due to protein S deficiency, autosomal dominant

  Inheritance: AD, SD Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), Genomics England PanelApp
• hereditary thrombophilia due to congenital protein S deficiency

  Inheritance: AR, SD Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, ClinGen
• thrombophilia due to protein S deficiency, autosomal recessive

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), Genomics England PanelApp, Ambry Genetics

ACMG classification

Our verdict: Likely_pathogenic. The variant received 8 ACMG points.

• PVS1: Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most exon, not predicted to undergo nonsense mediated mRNA decay. There are 6 pathogenic variants in the truncated region.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 3-93874284-G-GT is Pathogenic according to our data. Variant chr3-93874284-G-GT is described in ClinVar as Pathogenic. ClinVar VariationId is 472998.Status of the report is criteria_provided_single_submitter, 1 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000313.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PROS1	NM_000313.4	MANE Select	c.1991dupA	p.His664GlnfsTer35	frameshift	Exon 15 of 15	NP_000304.2
	PROS1	NM_001314077.2		c.2087dupA	p.His696GlnfsTer35	frameshift	Exon 16 of 16	NP_001301006.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PROS1	ENST00000394236.9	TSL:1 MANE Select	c.1991dupA	p.His664GlnfsTer35	frameshift	Exon 15 of 15	ENSP00000377783.3
	PROS1	ENST00000407433.6	TSL:1	c.1946dupA	p.His649GlnfsTer35	frameshift	Exon 15 of 15	ENSP00000385794.2
	PROS1	ENST00000650591.1		c.2087dupA	p.His696GlnfsTer35	frameshift	Exon 16 of 16	ENSP00000497376.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions as Germline

Significance: Pathogenic

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
1	-	-	Thrombophilia due to protein S deficiency, autosomal recessive (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		4.9

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

Other links and lift over

dbSNP: rs1553808038; hg19: chr3-93593128;