rs281875174

Positions:

• chr11-57614367-T-A
• chr11-57614367-T-G

Variant summary

Our verdict is Pathogenic. Variant got 14 ACMG points: 14P and 0B. PS1_Moderate PM1 PM2 PM5 PP3_Strong PP5_Moderate

The NM_000062.3(SERPING1):​c.1289T>A​(p.Leu430Gln) variant causes a missense change. 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 Pathogenic (★). Another nucleotide change resulting in same amino acid change has been previously reported as Likely pathogenicin UniProt. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. L430P) has been classified as Pathogenic.

• Frequency: Genomes: not found (cov: 32)
• Consequence: SERPING1 NM_000062.3 missense
• Clinical Significance: Pathogenic criteria provided, single submitter P:1 O:1
• Conservation: PhyloP100: 4.80

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]

ACMG classification

Verdict is Pathogenic. Variant got 14 ACMG points.

• PS1: Transcript NM_000062.3 (SERPING1) is affected with MISSENSE_VARIANT having same AA change as one Pathogenic present in UniProt
• PM1: In a turn (size 2) in uniprot entity IC1_HUMAN there are 7 pathogenic changes around while only 0 benign (100%) 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 chr11-57614367-T-C is described in Lovd as [Pathogenic].
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.961
• PP5: Variant 11-57614367-T-A is Pathogenic according to our data. Variant chr11-57614367-T-A is described in ClinVar as [Pathogenic]. Clinvar id is 68244.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr11-57614367-T-A is described in Lovd as [Likely_pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SERPING1	NM_000062.3	c.1289T>A	p.Leu430Gln	missense_variant	8/8	ENST00000278407.9	NP_000053.2
SERPING1	NM_001032295.2	c.1289T>A	p.Leu430Gln	missense_variant	7/7		NP_001027466.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SERPING1	ENST00000278407.9	c.1289T>A	p.Leu430Gln	missense_variant	8/8	1	NM_000062.3	ENSP00000278407	P2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1 Other:1

Revision: criteria provided, single submitter

Submissions by phenotype

Hereditary angioedema type 1 Pathogenic:1

Pathogenic, criteria provided, single submitter

research

DNA-diagnostics Laboratory, Research Centre For Medical Genetics

Jul 07, 2024

According to our observation and the published information of Xu et al., 2012, the c.1289T>A variant in SERPING1 meets ACMG/ClinGen SVI guidance criteria to be classified as pathogenic: PP4_Str, PM5, PS4_Mod, PM2_Sup, PP1, PP2, PP3 -

not provided Other:1

not provided, no classification provided

literature only

UniProtKB/Swiss-Prot

-

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.81
BayesDel_addAF	Pathogenic	0.28	D
BayesDel_noAF	Pathogenic	0.16
CADD	Pathogenic	28
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.88	D;.;.;.;D
Eigen	Uncertain	0.68
Eigen_PC	Uncertain	0.60
FATHMM_MKL	Uncertain	0.92	D
LIST_S2	Benign	0.74	T;T;T;T;T
M_CAP	Pathogenic	0.41	D
MetaRNN	Pathogenic	0.96	D;D;D;D;D
MetaSVM	Uncertain	0.69	D
MutationAssessor	Pathogenic	3.0	M;.;.;.;.
MutationTaster	Benign	1.0	D;D;D;D;D
PrimateAI	Benign	0.47	T
PROVEAN	Pathogenic	-4.8	D;D;D;D;D
REVEL	Pathogenic	0.86
Sift	Uncertain	0.0020	D;D;D;D;D
Sift4G	Uncertain	0.0030	D;D;D;D;D
Polyphen		1.0	D;.;.;.;.
Vest4		0.73
MutPred		0.82		.;.;Loss of stability (P = 0.0211);.;.;
MVP		0.90
MPC		1.0
ClinPred		0.99	D
GERP RS		5.0
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.96
gMVP		1.0

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: rs281875174; hg19: chr11-57381840;