rs78449232

Variant summary

Our verdict is Benign. The variant received -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BS1BS2

The NM_000313.4(PROS1):​c.1032C>T​(p.Ile344Ile) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00179 in 1,613,888 control chromosomes in the GnomAD database, including 38 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0090 ( 21 hom., cov: 32)
Exomes 𝑓: 0.0010 ( 17 hom. )

Consequence

PROS1
NM_000313.4 synonymous

Scores

2

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: -1.34

Publications

0 publications found
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 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

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -21 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.66).
BP6
Variant 3-93893056-G-A is Benign according to our data. Variant chr3-93893056-G-A is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 346884.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BP7
Synonymous conserved (PhyloP=-1.34 with no splicing effect.
BS1
Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00905 (1377/152232) while in subpopulation AFR AF = 0.0309 (1285/41530). AF 95% confidence interval is 0.0295. There are 21 homozygotes in GnomAd4. There are 631 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.
BS2
High Homozygotes in GnomAd4 at 21 AD,AR,SD gene

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
PROS1NM_000313.4 linkc.1032C>T p.Ile344Ile synonymous_variant Exon 10 of 15 ENST00000394236.9 NP_000304.2 P07225A0A0S2Z4K3
PROS1NM_001314077.2 linkc.1128C>T p.Ile376Ile synonymous_variant Exon 11 of 16 NP_001301006.1 P07225A0A0S2Z4L3

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
PROS1ENST00000394236.9 linkc.1032C>T p.Ile344Ile synonymous_variant Exon 10 of 15 1 NM_000313.4 ENSP00000377783.3 P07225

Frequencies

GnomAD3 genomes
AF:
0.00905
AC:
1377
AN:
152114
Hom.:
21
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0311
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00360
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.000622
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.000265
Gnomad OTH
AF:
0.00717
GnomAD2 exomes
AF:
0.00252
AC:
633
AN:
251340
AF XY:
0.00175
show subpopulations
Gnomad AFR exome
AF:
0.0318
Gnomad AMR exome
AF:
0.00231
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.0000544
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.000220
Gnomad OTH exome
AF:
0.000816
GnomAD4 exome
AF:
0.00103
AC:
1508
AN:
1461656
Hom.:
17
Cov.:
31
AF XY:
0.000924
AC XY:
672
AN XY:
727142
show subpopulations
African (AFR)
AF:
0.0343
AC:
1149
AN:
33470
American (AMR)
AF:
0.00235
AC:
105
AN:
44720
Ashkenazi Jewish (ASJ)
AF:
0.000153
AC:
4
AN:
26132
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39682
South Asian (SAS)
AF:
0.000139
AC:
12
AN:
86252
European-Finnish (FIN)
AF:
0.0000187
AC:
1
AN:
53412
Middle Eastern (MID)
AF:
0.000696
AC:
4
AN:
5744
European-Non Finnish (NFE)
AF:
0.0000854
AC:
95
AN:
1111866
Other (OTH)
AF:
0.00229
AC:
138
AN:
60378
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.483
Heterozygous variant carriers
0
82
165
247
330
412
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Exome Hom
Variant carriers
0
40
80
120
160
200
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
AF:
0.00905
AC:
1377
AN:
152232
Hom.:
21
Cov.:
32
AF XY:
0.00848
AC XY:
631
AN XY:
74438
show subpopulations
African (AFR)
AF:
0.0309
AC:
1285
AN:
41530
American (AMR)
AF:
0.00360
AC:
55
AN:
15288
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3468
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5174
South Asian (SAS)
AF:
0.000623
AC:
3
AN:
4818
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10608
Middle Eastern (MID)
AF:
0.00340
AC:
1
AN:
294
European-Non Finnish (NFE)
AF:
0.000265
AC:
18
AN:
68026
Other (OTH)
AF:
0.00710
AC:
15
AN:
2114
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.498
Heterozygous variant carriers
0
65
131
196
262
327
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Genome Hom
Variant carriers
0
20
40
60
80
100
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
Alfa
AF:
0.00396
Hom.:
8
Bravo
AF:
0.0105
Asia WGS
AF:
0.000866
AC:
3
AN:
3478
EpiCase
AF:
0.0000545
EpiControl
AF:
0.000356

ClinVar

Significance: Benign/Likely benign
Submissions summary: Benign:3
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

Thrombophilia due to protein S deficiency, autosomal dominant Benign:1
Jan 12, 2018
Illumina Laboratory Services, Illumina
Significance:Likely benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease. -

not provided Benign:1
-
Breakthrough Genomics, Breakthrough Genomics
Significance:Likely benign
Review Status:criteria provided, single submitter
Collection Method:not provided

- -

Thrombophilia due to protein S deficiency, autosomal recessive Benign:1
Jan 25, 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
-0.66
CADD
Benign
0.63
DANN
Benign
0.71
PhyloP100
-1.3
Mutation Taster
=99/1
polymorphism

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

Other links and lift over

dbSNP: rs78449232; hg19: chr3-93611900; API