12-7089707-T-C

Position:

• chr12-7089707-T-C

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_001733.7(C1R):​c.451A>G​(p.Lys151Glu) 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 benign outcome for this variant. 12/15 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: C1R NM_001733.7 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.121

Genes affected

C1R (HGNC:1246): (complement C1r) This gene encodes a member of the peptidase S1 protein family. The encoded protein is a proteolytic subunit in the complement system C1 complex. The complement system acts as a mediator in the innate immune response by ultimately triggering phagocytosis, inflammation, and rupturing the bacterial cell wall. Mutations in this gene are associated with Ehlers-Danlos Syndrome. [provided by RefSeq, Dec 2018]

C1RL (HGNC:21265): (complement C1r subcomponent like) Predicted to enable serine-type endopeptidase activity. Predicted to be involved in zymogen activation. Located in extracellular exosome. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.06701872).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
C1R	NM_001733.7	c.451A>G	p.Lys151Glu	missense_variant	4/11	ENST00000647956.2	NP_001724.4
C1R	NM_001354346.2	c.493A>G	p.Lys165Glu	missense_variant	4/11		NP_001341275.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
C1R	ENST00000647956.2	c.451A>G	p.Lys151Glu	missense_variant	4/11		NM_001733.7	ENSP00000497341	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 0

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

CeGaT Center for Human Genetics Tuebingen

Oct 01, 2018

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.064
BayesDel_addAF	Benign	-0.052	T
BayesDel_noAF	Benign	-0.31
CADD	Benign	0.18
DANN	Benign	0.42
DEOGEN2	Benign	0.0064	.;.;T;T;T;.;T;T
Eigen	Benign	-1.3
Eigen_PC	Benign	-1.4
FATHMM_MKL	Benign	0.10	N
LIST_S2	Benign	0.44	T;.;T;T;T;T;T;T
MetaRNN	Benign	0.067	T;T;T;T;T;T;T;T
MetaSVM	Benign	-0.40	T
MutationTaster	Benign	1.0	N;N;N;N
PrimateAI	Benign	0.28	T
PROVEAN	Benign	0.070	.;.;N;N;N;N;N;N
REVEL	Benign	0.084
Sift	Benign	0.75	.;.;T;T;T;T;T;T
Sift4G	Benign	0.78	.;.;T;.;.;.;.;T
Polyphen		0.0020, 0.022	.;.;B;B;.;.;.;.
Vest4		0.051, 0.058, 0.079
MutPred		0.34		Loss of ubiquitination at K151 (P = 0.0056);Loss of ubiquitination at K151 (P = 0.0056);.;.;.;.;.;.;
MVP		0.71
ClinPred		0.034	T
GERP RS		0.32
gMVP		0.19

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs1591590936; hg19: chr12-7242303;