12-7091480-G-A

Position:

• chr12-7091480-G-A

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2 PP3_Strong

The NM_001733.7(C1R):​c.203C>T​(p.Ser68Phe) variant causes a missense change involving the alteration of a 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 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: 7.97

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_pathogenic. Variant got 6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.948

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
C1R	NM_001733.7	c.203C>T	p.Ser68Phe	missense_variant	2/11	ENST00000647956.2
C1R	NM_001354346.2	c.245C>T	p.Ser82Phe	missense_variant	2/11

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
C1R	ENST00000647956.2	c.203C>T	p.Ser68Phe	missense_variant	2/11		NM_001733.7	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

Ehlers-Danlos syndrome, periodontal type 1 Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Revvity Omics, Revvity

May 31, 2022

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.75
BayesDel_addAF	Pathogenic	0.26	D
BayesDel_noAF	Uncertain	0.13
CADD	Pathogenic	29
DANN	Uncertain	1.0
Eigen	Pathogenic	0.80
Eigen_PC	Pathogenic	0.80
FATHMM_MKL	Uncertain	0.94	D
LIST_S2	Uncertain	0.95	D;.;D;D;D;D
MetaRNN	Pathogenic	0.95	D;D;D;D;D;D
MetaSVM	Benign	-0.86	T
MutationTaster	Benign	1.0	D;D;D;D
PrimateAI	Uncertain	0.58	T
Polyphen		1.0	.;.;D;D;.;.
Vest4		0.86, 0.86, 0.88
MutPred		0.84		Loss of phosphorylation at Y73 (P = 0.1411);Loss of phosphorylation at Y73 (P = 0.1411);.;Loss of phosphorylation at Y73 (P = 0.1411);Loss of phosphorylation at Y73 (P = 0.1411);Loss of phosphorylation at Y73 (P = 0.1411);
MVP		0.38
ClinPred		1.0	D
GERP RS		5.4
gMVP		0.71

Splicing

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr12-7244076;