11-57614474-C-T

Variant names:

• chr11-57614474-C-T
• rs28940870
• NM_000062.3:c.1396C>T

Variant summary

Our verdict is Pathogenic. The variant received 18 ACMG points: 18P and 0B. PM1 PM2 PM5 PP3_Strong PP5_Very_Strong

The NM_000062.3(SERPING1):​c.1396C>T​(p.Arg466Cys) 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 Pathogenic (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R466H) has been classified as Pathogenic.

• Frequency: Genomes: not found (cov: 32)
• Consequence: SERPING1 NM_000062.3 missense
• Clinical Significance: Pathogenic criteria provided, multiple submitters, no conflicts P:8 O:1
• Conservation: PhyloP100: 3.23
• Publications: 28 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: Labcorp Genetics (formerly Invitae), ClinGen
• 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 18 ACMG points.

• PM1: In a hotspot region, there are 11 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 7 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 chr11-57614475-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 3946.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.952
• PP5: Variant 11-57614474-C-T is Pathogenic according to our data. Variant chr11-57614474-C-T is described in ClinVar as Pathogenic. ClinVar VariationId is 3947.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000062.3. 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
	SERPING1	NM_000062.3	MANE Select	c.1396C>T	p.Arg466Cys	missense	Exon 8 of 8	NP_000053.2	P05155-1
	SERPING1	NM_001032295.2		c.1396C>T	p.Arg466Cys	missense	Exon 7 of 7	NP_001027466.1	P05155-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SERPING1	ENST00000278407.9	TSL:1 MANE Select	c.1396C>T	p.Arg466Cys	missense	Exon 8 of 8	ENSP00000278407.4	P05155-1
	SERPING1	ENST00000619430.2	TSL:1	c.1192C>T	p.Arg398Cys	missense	Exon 7 of 7	ENSP00000478572.2	A0A087WUD9
	SERPING1	ENST00000531133.5	TSL:1	n.*765C>T		non_coding_transcript_exon	Exon 6 of 6	ENSP00000435431.1	E9PK97

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions as Germline

Significance: Pathogenic

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
4	-	-	not provided (5)
3	-	-	Hereditary angioedema type 1 (3)
1	-	-	Hereditary C1 esterase inhibitor deficiency - dysfunctional factor (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.84
BayesDel_addAF	Pathogenic	0.41	D
BayesDel_noAF	Pathogenic	0.36
CADD	Uncertain	25
DANN	Pathogenic	1.0
DEOGEN2	Pathogenic	0.86	D
Eigen	Uncertain	0.43
Eigen_PC	Uncertain	0.36
FATHMM_MKL	Uncertain	0.86	D
LIST_S2	Uncertain	0.90	D
M_CAP	Pathogenic	0.32	D
MetaRNN	Pathogenic	0.95	D
MetaSVM	Uncertain	0.59	D
MutationAssessor	Uncertain	2.9	M
PhyloP100		3.2
PrimateAI	Benign	0.46	T
PROVEAN	Pathogenic	-7.0	D
REVEL	Pathogenic	0.72
Sift	Pathogenic	0.0	D
Sift4G	Uncertain	0.0020	D
Polyphen		0.92	P
Vest4		0.67
MutPred		0.74		Gain of catalytic residue at R471 (P = 0.0436)
MVP		0.95
MPC		1.2
ClinPred		0.99	D
GERP RS		4.8
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.96
gMVP		0.96
Mutation Taster		=1/99	disease causing (ClinVar)

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

Other links and lift over

dbSNP: rs28940870; hg19: chr11-57381947;