2-127419994-G-T

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_000312.4(PROC):c.52G>T(p.Gly18Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,346 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G18S) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: PROC NM_000312.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -2.43

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PROC	NM_000312.4	c.52G>T	p.Gly18Cys	missense_variant	2/9	ENST00000234071.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PROC	ENST00000234071.8	c.52G>T	p.Gly18Cys	missense_variant	2/9	1	NM_000312.4	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD3 exomes AF: 0.00000398 AC: 1 AN: 251292 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 135850

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.000163

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461346 Hom.: 0 Cov.: 34 AF XY: 0.00000138 AC XY: 1 AN XY: 726986

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 8.99e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

ExAC AF: 0.00000824 AC: 1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.098
BayesDel_addAF	Uncertain	0.098	D
BayesDel_noAF	Benign	-0.10
Cadd	Benign	1.9
Dann	Benign	0.96
DEOGEN2	Benign	0.37	T;T;.;.;.
Eigen	Benign	-1.1
Eigen_PC	Benign	-1.4
FATHMM_MKL	Benign	0.073	N
LIST_S2	Benign	0.68	T;T;T;T;T
M_CAP	Pathogenic	0.49	D
MetaRNN	Uncertain	0.57	D;D;D;D;D
MetaSVM	Pathogenic	1.2	D
MutationAssessor	Uncertain	2.4	M;.;.;.;.
MutationTaster	Benign	1.0	N;N;N;N
PrimateAI	Benign	0.32	T
PROVEAN	Benign	-0.98	N;N;N;N;N
REVEL	Uncertain	0.43
Sift4G	Benign	0.071	T;D;D;D;D
Polyphen		0.99	D;.;.;.;P
Vest4		0.29
MutPred		0.59		Loss of disorder (P = 0.0397);Loss of disorder (P = 0.0397);Loss of disorder (P = 0.0397);Loss of disorder (P = 0.0397);Loss of disorder (P = 0.0397);
MVP		0.86
MPC		0.49
ClinPred		0.71	D
GERP RS		-8.3
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.24
gMVP		0.73

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.060		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs146793243; hg19: chr2-128177570;