Variant chr12-7091446-C-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Benign. Variant got -10 ACMG points: 0P and 10B. BP4_StrongBP6_ModerateBS2

The NM_001733.7(C1R):c.231+6G>A variant causes a splice donor region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0011 in 754,606 control chromosomes in the GnomAD database, including 4 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.0031 ( 3 hom., cov: 32)

Exomes 𝑓: 0.00058 ( 1 hom. )

Consequence

C1R
NM_001733.7 splice_donor_region, intron

Scores

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: 0.0570

Variant links:

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 links:

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]

C1RL links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -10 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.77).

BP6

Variant 12-7091446-C-T is Benign according to our data. Variant chr12-7091446-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 2500100.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr12-7091446-C-T is described in Lovd as [Likely_benign].

BS2

High AC in GnomAd4 at 477 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
C1R	NM_001733.7 linkuse as main transcript	c.231+6G>A		splice_donor_region_variant, intron_variant		ENST00000647956.2
C1R	NM_001354346.2 linkuse as main transcript	c.273+6G>A		splice_donor_region_variant, intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
C1R	ENST00000647956.2 linkuse as main transcript	c.231+6G>A		splice_donor_region_variant, intron_variant			NM_001733.7	P1

Frequencies

GnomAD3 genomes

AF:

0.00312

AC:

475

AN:

152178

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0100

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00236

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.0127

Gnomad NFE

AF:

0.000162

Gnomad OTH

AF:

0.00383

GnomAD3 exomes

AF:

0.000896

AC:

188

AN:

209912

Hom.:

AF XY:

0.000736

AC XY:

AN XY:

112722

show subpopulations

Gnomad AFR exome

AF:

0.0116

Gnomad AMR exome

AF:

0.00101

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000114

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000866

Gnomad OTH exome

AF:

0.000371

GnomAD4 exome

AF:

0.000584

AC:

352

AN:

602310

Hom.:

Cov.:

AF XY:

0.000490

AC XY:

160

AN XY:

326638

show subpopulations

Gnomad4 AFR exome

AF:

0.0120

Gnomad4 AMR exome

AF:

0.00120

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000455

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000119

Gnomad4 OTH exome

AF:

0.00146

GnomAD4 genome

AF:

0.00313

AC:

477

AN:

152296

Hom.:

Cov.:

AF XY:

0.00312

AC XY:

232

AN XY:

74474

show subpopulations

Gnomad4 AFR

AF:

0.0101

Gnomad4 AMR

AF:

0.00235

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000162

Gnomad4 OTH

AF:

0.00379

Alfa

AF:

0.00202

Hom.:

Bravo

AF:

0.00393

Asia WGS

AF:

0.000577

AC:

AN:

3478

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Ehlers-Danlos syndrome, periodontal type 1

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Center for Genomics, Ann and Robert H. Lurie Children's Hospital of Chicago

Jul 25, 2022

This variant has not been reported in the literature but is present in the Genome Aggregation Database (Highest reported MAF 1.0% (416/41446) including 2 homozygotes (https://gnomad.broadinstitute.org/variant/12-7091446-C-T?dataset=gnomad_r3). Evolutionary conservation and computational predictive tools for this variant are limited or unavailable. This variant is an intronic variant with no predicted change in the amino acid sequence but may have an unknown effect on splicing. Splice prediction tools do not suggest that this variant may affect splicing. However, further studies are needed to understand its impact. In summary, data on this variant suggests that this variant does not cause disease but requires further evidence. Therefore, this variant is classified as likely benign. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.77

CADD

Benign

4.3

DANN

Benign

0.53

Splicing

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

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over