NM_001733.7:c.149_150delTCinsAT

Variant names:

• chr12-7091533-GA-AT
• rs1057519025
• NM_001733.7:c.149_150delTCinsAT

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PP5_Moderate

The NM_001733.7(C1R):​c.149_150delTCinsAT​(p.Val50Asp) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. It is difficult to determine the true allele frequency of this variant because it is of type MNV, and the frequency of such variant types in population databases may be underestimated and unreliable. Variant has been reported in ClinVar as Pathogenic (★). Synonymous variant affecting the same amino acid position (i.e. V50V) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: C1R NM_001733.7 missense
• Clinical Significance: Pathogenic criteria provided, single submitter P:3
• Conservation: PhyloP100: 5.74
• Publications: 5 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]

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

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PP5: Variant 12-7091533-GA-AT is Pathogenic according to our data. Variant chr12-7091533-GA-AT is described in ClinVar as Pathogenic. ClinVar VariationId is 372130.Status of the report is criteria_provided_single_submitter, 1 stars.

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

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	C1R	NM_001733.7	MANE Select	c.149_150delTCinsAT	p.Val50Asp	missense	N/A	NP_001724.4
	C1R	NM_001354346.2		c.191_192delTCinsAT	p.Val64Asp	missense	N/A	NP_001341275.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	C1R	ENST00000647956.2	MANE Select	c.149_150delTCinsAT	p.Val50Asp	missense	N/A	ENSP00000497341.1
	C1R	ENST00000536092.1	TSL:1	n.254_255delTCinsAT		non_coding_transcript_exon	Exon 2 of 2
	C1R	ENST00000536053.6	TSL:2	c.191_192delTCinsAT	p.Val64Asp	missense	N/A	ENSP00000444271.3

Frequencies

GnomAD3 genomes Cov.: 32

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:3

Revision: criteria provided, single submitter

Submissions by phenotype

Ehlers-Danlos syndrome, periodontal type 1 Pathogenic:2

Aug 23, 2016

Institute of Human Genetics, Medical University Innsbruck

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: research

Oct 31, 2016

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

Ehlers-Danlos syndrome, periodontal type 2 Pathogenic:1

Oct 13, 2016

University of Washington Center for Mendelian Genomics, University of Washington

Significance: Likely pathogenic

Review Status: no assertion criteria provided

Collection Method: research

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		5.7

Splicing

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

Other links and lift over

dbSNP: rs1057519025; hg19: chr12-7244129;