NM_001733.7:c.1113C>G

Variant names:

• chr12-7086383-G-C
• rs1057519579
• NM_001733.7:c.1113C>G

Variant summary

Our verdict is Uncertain significance. The variant received 5 ACMG points: 6P and 1B. PM2 PM5 PP5_Moderate BP4

The NM_001733.7(C1R):​c.1113C>G​(p.Cys371Trp) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign 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. C371R) has been classified as Likely pathogenic.

• Frequency: Genomes: not found (cov: 32)
• Consequence: C1R NM_001733.7 missense
• Clinical Significance: Pathogenic criteria provided, single submitter P:2
• Conservation: PhyloP100: 4.32
• Publications: 2 publications found

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]

C1R Gene-Disease associations (from GenCC):

• Ehlers-Danlos syndrome, periodontal type 1

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Genomics England PanelApp, G2P, Labcorp Genetics (formerly Invitae)
• autosomal systemic lupus erythematosus type 16

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• Ehlers-Danlos syndrome, periodontitis type

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 5 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr12-7086385-A-G is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 4531436.Status of the report is criteria_provided_single_submitter, 1 stars.
• PP5: Variant 12-7086383-G-C is Pathogenic according to our data. Variant chr12-7086383-G-C is described in ClinVar as Pathogenic. ClinVar VariationId is 375580.Status of the report is criteria_provided_single_submitter, 1 stars.
• BP4: Computational evidence support a benign effect (MetaRNN=0.30920333). . Strength limited to SUPPORTING due to the PP5.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001733.7. 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
	C1R	NM_001733.7	MANE Select	c.1113C>G	p.Cys371Trp	missense	Exon 8 of 11	NP_001724.4	A0A3B3ISR2
	C1R	NM_001354346.2		c.1155C>G	p.Cys385Trp	missense	Exon 8 of 11	NP_001341275.1	B4DPQ0

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	C1R	ENST00000647956.2	MANE Select	c.1113C>G	p.Cys371Trp	missense	Exon 8 of 11	ENSP00000497341.1	A0A3B3ISR2
	C1R	ENST00000903851.1		c.1266C>G	p.Cys422Trp	missense	Exon 9 of 12	ENSP00000573910.1
	C1R	ENST00000903850.1		c.1185C>G	p.Cys395Trp	missense	Exon 9 of 12	ENSP00000573909.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 0

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

Significance: Pathogenic

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
1	-	-	Ehlers-Danlos syndrome, periodontal type 1 (1)
1	-	-	Ehlers-Danlos syndrome, periodontal type 2 (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.98
CADD	Pathogenic	30
DEOGEN2	Benign	0.30	T
LIST_S2	Benign	0.83	T
MetaRNN	Benign	0.31	T
PhyloP100		4.3
PROVEAN	Benign	-1.6	N
Sift	Benign	0.041	D
Sift4G	Pathogenic	0.0	D
Vest4		0.79
gMVP		0.83

Splicing

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

Other links and lift over

dbSNP: rs1057519579;