2-127428495-C-T

Variant names:

Variant summary

Our verdict is Pathogenic. The variant received 13 ACMG points: 13P and 0B. PP2PP3_StrongPP5_Very_Strong

The NM_000312.4(PROC):c.935C>T(p.Ser312Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000684 in 1,461,762 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★★). Synonymous variant affecting the same amino acid position (i.e. S312S) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000068 ( 0 hom. )

Consequence

PROC
NM_000312.4 missense

Scores

Clinical Significance

Pathogenic criteria provided, multiple submitters, no conflicts P:3

Conservation

PhyloP100: 1.69

Publications

7 publications found

Variant links:

Genes affected

PROC (HGNC:9451): (protein C, inactivator of coagulation factors Va and VIIIa) This gene encodes a vitamin K-dependent plasma glycoprotein. The encoded protein is cleaved to its activated form by the thrombin-thrombomodulin complex. This activated form contains a serine protease domain and functions in degradation of the activated forms of coagulation factors V and VIII. Mutations in this gene have been associated with thrombophilia due to protein C deficiency, neonatal purpura fulminans, and recurrent venous thrombosis.[provided by RefSeq, Dec 2009]

PROC Gene-Disease associations (from GenCC):

hereditary thrombophilia due to congenital protein C deficiency
Inheritance: AD, SD Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, ClinGen
thrombophilia due to protein C deficiency, autosomal dominant
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae), Ambry Genetics
thrombophilia due to protein C deficiency, autosomal recessive
Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae), Genomics England PanelApp

PROC links:

LOC105373608 (HGNC:):

LOC105373608 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Pathogenic. The variant received 13 ACMG points.

PP2

Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 56 curated pathogenic missense variants (we use a threshold of 10). The gene has 16 curated benign missense variants. Gene score misZ: 0.88339 (below the threshold of 3.09). Trascript score misZ: 1.6095 (below the threshold of 3.09). GenCC associations: The gene is linked to thrombophilia due to protein C deficiency, autosomal dominant, thrombophilia due to protein C deficiency, autosomal recessive, hereditary thrombophilia due to congenital protein C deficiency.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.987

PP5

Variant 2-127428495-C-T is Pathogenic according to our data. Variant chr2-127428495-C-T is described in ClinVar as Pathogenic. ClinVar VariationId is 680.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PROC	NM_000312.4 link	c.935C>T	p.Ser312Leu	missense_variant	Exon 9 of 9	ENST00000234071.8	NP_000303.1	P04070-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
PROC	ENST00000234071.8 link	c.935C>T	p.Ser312Leu	missense_variant	Exon 9 of 9	1	NM_000312.4	ENSP00000234071.4	P04070-1
PROC	ENST00000409048.1 link	c.1037C>T	p.Ser346Leu	missense_variant	Exon 7 of 7	5		ENSP00000386679.1	E7END6
PROC	ENST00000402125.2 link	c.257C>T	p.Ser86Leu	missense_variant	Exon 2 of 2	2		ENSP00000384225.2	H7BYX9

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000796

AC:

AN:

251348

AF XY:

0.00000736

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000578

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000684

AC:

AN:

1461762

Hom.:

Cov.:

AF XY:

0.00000550

AC XY:

AN XY:

727188

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.0000447

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.0000252

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86254

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53296

Middle Eastern (MID)

AF:

0.000173

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00000360

AC:

AN:

1112008

Other (OTH)

AF:

0.0000331

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.485

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<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

Cov.:

Alfa

AF:

0.00

Hom.:

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Thrombophilia due to protein C deficiency, autosomal dominant

Pathogenic:2

Oct 28, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces serine, which is neutral and polar, with leucine, which is neutral and non-polar, at codon 312 of the PROC protein (p.Ser312Leu). This variant is present in population databases (rs121918160, gnomAD 0.006%). This missense change has been observed in individuals with deep vein thrombosis, pulmonary embolism, and protein C deficiency (PMID: 7482420, 11380450, 22545135). It has also been observed to segregate with disease in related individuals. This variant is also known as 8524C>T, p.Ser270Leu. ClinVar contains an entry for this variant (Variation ID: 680). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is expected to disrupt PROC protein function with a positive predictive value of 80%. Experimental studies have shown that this missense change affects PROC function (PMID: 11380450). For these reasons, this variant has been classified as Pathogenic. -

Jun 01, 2001

OMIM

Significance:Pathogenic

Review Status:no assertion criteria provided

Collection Method:literature only

- -

not provided

Pathogenic:1

Jul 21, 2024

GeneDx

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Published functional studies suggest a damaging effect on the secretion of PROC protein in vitro (PMID: 11380450); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Also known as p.(S270L); This variant is associated with the following publications: (PMID: 11380450, 34708097, 34188281, 22545135, 28607330, 7482420, 37647632, 33729509, 17152060) -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.28

BayesDel_addAF

Pathogenic

0.26

BayesDel_noAF

Pathogenic

0.32

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

0.91

D;.

Eigen

Uncertain

0.32

Eigen_PC

Benign

0.17

FATHMM_MKL

Benign

0.33

LIST_S2

Uncertain

0.89

D;D

M_CAP

Pathogenic

0.36

MetaRNN

Pathogenic

0.99

D;D

MetaSVM

Pathogenic

1.1

MutationAssessor

Uncertain

2.5

M;.

PhyloP100

1.7

PrimateAI

Benign

0.43

PROVEAN

Uncertain

-4.0

D;D

REVEL

Uncertain

0.60

Sift4G

Uncertain

0.016

D;D

Polyphen

1.0

D;D

Vest4

0.50

MutPred

0.82

.;Loss of sheet (P = 0.0817);

MVP

0.95

MPC

1.2

ClinPred

0.82

GERP RS

5.5

Varity_R

0.90

gMVP

0.93

Mutation Taster

=6/94

disease causing (ClinVar)

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over