NM_001733.7:c.1337G>A

Variant names:

• chr12-7082043-C-T
• rs773720903
• NM_001733.7:c.1337G>A

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 0P and 5B. BP4 BS2

The NM_001733.7(C1R):​c.1337G>A​(p.Arg446Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000939 in 1,384,806 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 11/13 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)
  • Exomes 𝑓: 0.0000094 (1 hom.)
• Consequence: C1R NM_001733.7 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.290

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]

ACMG classification

Verdict is Likely_benign. Variant got -5 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.34554937).
• BS2: High AC in GnomAdExome4 at 13 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
C1R	NM_001733.7	c.1337G>A	p.Arg446Gln	missense_variant	Exon 10 of 11	ENST00000647956.2	NP_001724.4
C1R	NM_001354346.2	c.1379G>A	p.Arg460Gln	missense_variant	Exon 10 of 11		NP_001341275.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
C1R	ENST00000647956.2	c.1337G>A	p.Arg446Gln	missense_variant	Exon 10 of 11		NM_001733.7	ENSP00000497341.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.0000141 AC: 2 AN: 141676 Hom.: 0 AF XY: 0.0000264 AC XY: 2 AN XY: 75808

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.0000440

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000172

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000939 AC: 13 AN: 1384806 Hom.: 1 Cov.: 30 AF XY: 0.0000102 AC XY: 7 AN XY: 683324

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000631

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000649

Gnomad4 OTH exome AF: 0.0000173

GnomAD4 genome Cov.: 32

Alfa AF: 0.0000936 Hom.: 0

Bravo AF: 0.00000756

ExAC AF: 0.000134 AC: 3

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Mar 01, 2022

CeGaT Center for Human Genetics Tuebingen

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.11
BayesDel_addAF	Benign	-0.31	T
BayesDel_noAF	Benign	-0.55
CADD	Benign	17
DANN	Benign	0.94
DEOGEN2	Benign	0.010	.;.;T;T;.
Eigen	Benign	-0.19
Eigen_PC	Benign	-0.087
FATHMM_MKL	Benign	0.69	D
LIST_S2	Benign	0.60	T;.;T;T;T
MetaRNN	Benign	0.35	T;T;T;T;T
MetaSVM	Benign	-1.1	T
PrimateAI	Benign	0.26	T
REVEL	Benign	0.073
Sift4G	Benign	0.61	.;.;T;.;.
Vest4		0.067, 0.065, 0.11
MutPred		0.57		Loss of MoRF binding (P = 0.0398);Loss of MoRF binding (P = 0.0398);.;.;.;
MVP		0.44
ClinPred		0.62	D
GERP RS		3.4
gMVP		0.48

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs773720903; hg19: chr12-7189347;