NM_000312.4:c.41G>A

Variant names:

• chr2-127419983-G-A
• rs758576042
• NM_000312.4:c.41G>A

Variant summary

Our verdict is Pathogenic. The variant received 16 ACMG points: 16P and 0B. PVS1 PP5_Very_Strong

The NM_000312.4(PROC):​c.41G>A​(p.Trp14*) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000479 in 1,461,464 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 Likely pathogenic (★★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000048 (0 hom.)
• Consequence: PROC NM_000312.4 stop_gained
• Clinical Significance: Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:3
• Conservation: PhyloP100: 2.24
• Publications: 1 publications found

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):

• thrombophilia due to protein C deficiency, autosomal dominant

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

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

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

ACMG classification

Our verdict: Pathogenic. The variant received 16 ACMG points.

• PVS1: Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant located near the start codon (<100nt), not predicted to undergo nonsense mediated mRNA decay. There are 108 pathogenic variants in the truncated region.
• PP5: Variant 2-127419983-G-A is Pathogenic according to our data. Variant chr2-127419983-G-A is described in ClinVar as Pathogenic/Likely_pathogenic. ClinVar VariationId is 972257.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000312.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PROC	NM_000312.4	MANE Select	c.41G>A	p.Trp14*	stop_gained	Exon 2 of 9	NP_000303.1	P04070-1
	PROC	NM_001375602.1		c.224G>A	p.Trp75*	stop_gained	Exon 2 of 9	NP_001362531.1
	PROC	NM_001375606.1		c.104G>A	p.Trp35*	stop_gained	Exon 2 of 8	NP_001362535.1	B4DPQ3

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PROC	ENST00000234071.8	TSL:1 MANE Select	c.41G>A	p.Trp14*	stop_gained	Exon 2 of 9	ENSP00000234071.4	P04070-1
	PROC	ENST00000883860.1		c.41G>A	p.Trp14*	stop_gained	Exon 2 of 8	ENSP00000553919.1
	PROC	ENST00000883897.1		c.41G>A	p.Trp14*	stop_gained	Exon 1 of 7	ENSP00000553956.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000479 AC: 7 AN: 1461464 Hom.: 0 Cov.: 34 AF XY: 0.00000138 AC XY: 1 AN XY: 727048

African (AFR) AF: 0.00 AC: 0 AN: 33462

American (AMR) AF: 0.00 AC: 0 AN: 44718

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26134

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86232

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53364

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5514

European-Non Finnish (NFE) AF: 0.00000629 AC: 7 AN: 1111994

Other (OTH) AF: 0.00 AC: 0 AN: 60346

GnomAD4 genome Cov.: 33

Alfa AF: 0.0000282 Hom.: 0

Bravo AF: 0.00000378

TwinsUK AF: 0.00 AC: 0

ALSPAC AF: 0.000259 AC: 1

ClinVar

ClinVar submissions

Significance: Pathogenic/Likely pathogenic

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
1	-	-	not provided (1)
1	-	-	Reduced protein C activity (1)
1	-	-	Thrombophilia due to protein C deficiency, autosomal dominant (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.60	D
BayesDel_noAF	Pathogenic	0.49
CADD	Pathogenic	36
DANN	Uncertain	0.99
Eigen	Uncertain	0.56
Eigen_PC	Uncertain	0.36
FATHMM_MKL	Uncertain	0.83	D
PhyloP100		2.2
Vest4		0.82
GERP RS		4.6
PromoterAI		0.028	Neutral
Mutation Taster		=2/198	disease causing (ClinVar)

Splicing

Name	Calibrated prediction	Score	Prediction
Splicevardb		2.0
SpliceAI score (max)		0.11		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: rs758576042; hg19: chr2-128177559;