rs281875168

Variant names:

• chr11-57600288-A-C
• rs281875168
• NM_000062.3:c.461A>C

Your query was ambiguous. Multiple possible variants found:

• chr11-57600288-A-C
• chr11-57600288-A-G

Variant summary

Our verdict is Pathogenic. The variant received 12 ACMG points: 12P and 0B. PM1 PM2 PM5 PP3_Strong PP5_Moderate

The NM_000062.3(SERPING1):​c.461A>C​(p.Tyr154Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. Y154C) has been classified as Pathogenic.

• Frequency: Genomes: not found (cov: 32)
• Consequence: SERPING1 NM_000062.3 missense
• Clinical Significance: Likely pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 3.31
• Publications: 0 publications found

Genes affected

SERPING1 (HGNC:1228): (serpin family G member 1) This gene encodes a highly glycosylated plasma protein involved in the regulation of the complement cascade. Its encoded protein, C1 inhibitor, inhibits activated C1r and C1s of the first complement component and thus regulates complement activation. It is synthesized in the liver, and its deficiency is associated with hereditary angioneurotic oedema (HANE). Alternative splicing results in multiple transcript variants encoding the same isoform. [provided by RefSeq, May 2020]

SERPING1 Gene-Disease associations (from GenCC):

• hereditary angioedema with C1Inh deficiency

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: ClinGen, Labcorp Genetics (formerly Invitae)
• C1 inhibitor deficiency

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• hereditary angioedema type 1

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• hereditary angioedema type 2

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Pathogenic. The variant received 12 ACMG points.

• PM1: In a hotspot region, there are 3 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 1 benign, 5 uncertain in NM_000062.3
• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr11-57600288-A-G is described in ClinVar as Pathogenic. ClinVar VariationId is 68251.Status of the report is criteria_provided_single_submitter, 1 stars.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.982
• PP5: Variant 11-57600288-A-C is Pathogenic according to our data. Variant chr11-57600288-A-C is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 2735607.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SERPING1	NM_000062.3	c.461A>C	p.Tyr154Ser	missense_variant	Exon 3 of 8	ENST00000278407.9	NP_000053.2
SERPING1	NM_001032295.2	c.461A>C	p.Tyr154Ser	missense_variant	Exon 2 of 7		NP_001027466.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SERPING1	ENST00000278407.9	c.461A>C	p.Tyr154Ser	missense_variant	Exon 3 of 8	1	NM_000062.3	ENSP00000278407.4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 37

GnomAD4 genome Cov.: 32

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Pathogenic:1

Dec 31, 2023

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces tyrosine, which is neutral and polar, with serine, which is neutral and polar, at codon 154 of the SERPING1 protein (p.Tyr154Ser). This variant is not present in population databases (gnomAD no frequency). This missense change has been observed in individuals with angioedema (PMID: 23123409; Invitae). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt SERPING1 protein function with a positive predictive value of 80%. This variant disrupts the p.Tyr154 amino acid residue in SERPING1. Other variant(s) that disrupt this residue have been observed in individuals with SERPING1-related conditions (PMID: 21864911, 23123409; Invitae), which suggests that this may be a clinically significant amino acid residue. In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has been classified as Likely Pathogenic. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.51
BayesDel_addAF	Pathogenic	0.52	D
BayesDel_noAF	Pathogenic	0.51
CADD	Uncertain	24
DANN	Uncertain	0.99
DEOGEN2	Benign	0.15	T;D;.;.;.;T
Eigen	Uncertain	0.68
Eigen_PC	Uncertain	0.61
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Benign	0.76	T;T;T;T;T;T
M_CAP	Pathogenic	0.68	D
MetaRNN	Pathogenic	0.98	D;D;D;D;D;D
MetaSVM	Pathogenic	1.1	D
MutationAssessor	Pathogenic	3.0	.;M;.;.;.;.
PhyloP100		3.3
PrimateAI	Benign	0.46	T
PROVEAN	Uncertain	-2.6	D;D;D;D;D;D
REVEL	Pathogenic	0.89
Sift	Pathogenic	0.0	D;D;D;D;D;D
Sift4G	Pathogenic	0.0	D;D;D;D;D;D
Polyphen		0.99, 1.0	.;D;.;.;.;D
Vest4		0.86, 0.86, 0.86, 0.85, 0.76
MutPred		0.87		.;.;.;.;.;Gain of disorder (P = 0.0251);
MVP		1.0
MPC		1.2
ClinPred		0.99	D
GERP RS		5.9
Varity_R		0.94
gMVP		0.95
Mutation Taster		=0/100	disease causing

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.040		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: rs281875168; hg19: chr11-57367761; COSMIC: COSV99558026; COSMIC: COSV99558026;