rs776969264

Variant names:

• chr3-93874023-AT-A
• rs776969264
• NM_000313.4:c.*221delA

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 0P and 0B.

The NM_000313.4(PROS1):​c.*221delA variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000835 in 479,206 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★).

• Frequency:
  • Genomes: 𝑓 0.000066 (0 hom., cov: 33)
  • Exomes 𝑓: 0.000092 (0 hom.)
• Consequence: PROS1 NM_000313.4 3_prime_UTR
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 0.0170
• 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: Uncertain_significance. The variant received 0 ACMG points.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PROS1	NM_000313.4	c.*221delA		3_prime_UTR_variant	Exon 15 of 15	ENST00000394236.9	NP_000304.2
PROS1	NM_001314077.2	c.*221delA		3_prime_UTR_variant	Exon 16 of 16		NP_001301006.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PROS1	ENST00000394236.9	c.*221delA		3_prime_UTR_variant	Exon 15 of 15	1	NM_000313.4	ENSP00000377783.3

Frequencies

GnomAD3 genomes AF: 0.0000657 AC: 10 AN: 152152 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.0000483

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

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: 0.000118

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.0000917 AC: 30 AN: 327054 Hom.: 0 Cov.: 5 AF XY: 0.0000954 AC XY: 16 AN XY: 167694

African (AFR) AF: 0.00 AC: 0 AN: 9438

American (AMR) AF: 0.00 AC: 0 AN: 9904

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 9470

East Asian (EAS) AF: 0.00 AC: 0 AN: 20650

South Asian (SAS) AF: 0.00 AC: 0 AN: 20432

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 21608

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 1320

European-Non Finnish (NFE) AF: 0.000139 AC: 30 AN: 215790

Other (OTH) AF: 0.00 AC: 0 AN: 18442

GnomAD4 genome AF: 0.0000657 AC: 10 AN: 152152 Hom.: 0 Cov.: 33 AF XY: 0.0000404 AC XY: 3 AN XY: 74324

African (AFR) AF: 0.0000483 AC: 2 AN: 41436

American (AMR) AF: 0.00 AC: 0 AN: 15278

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5196

South Asian (SAS) AF: 0.00 AC: 0 AN: 4826

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10620

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.000118 AC: 8 AN: 68004

Other (OTH) AF: 0.00 AC: 0 AN: 2092

Alfa AF: 0.000142 Hom.: 0

Bravo AF: 0.000102

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Thrombophilia due to protein S deficiency, autosomal dominant Uncertain:1

Jun 14, 2016

Illumina Laboratory Services, Illumina

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Thrombophilia due to protein S deficiency, autosomal dominant;C3281092:Thrombophilia due to protein S deficiency, autosomal recessive Uncertain:1

Sep 01, 2021

Fulgent Genetics, Fulgent Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
PhyloP100		0.017

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: rs776969264; hg19: chr3-93592867;