1-207756678-T-G

Position:

• chr1-207756678-T-G

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_172351.3(CD46):​c.98-336T>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.12 in 152,222 control chromosomes in the GnomAD database, including 1,244 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.12 (1244 hom., cov: 32)
• Consequence: CD46 NM_172351.3 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.352

Genes affected

CD46 (HGNC:6953): (CD46 molecule) The protein encoded by this gene is a type I membrane protein and is a regulatory part of the complement system. The encoded protein has cofactor activity for inactivation of complement components C3b and C4b by serum factor I, which protects the host cell from damage by complement. In addition, the encoded protein can act as a receptor for the Edmonston strain of measles virus, human herpesvirus-6, and type IV pili of pathogenic Neisseria. Finally, the protein encoded by this gene may be involved in the fusion of the spermatozoa with the oocyte during fertilization. Mutations at this locus have been associated with susceptibility to hemolytic uremic syndrome. Alternatively spliced transcript variants encoding different isoforms have been described. [provided by RefSeq, Jun 2010]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.81).
• BA1: GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.244 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CD46	NM_172351.3	c.98-336T>G		intron_variant		ENST00000367042.6	NP_758861.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CD46	ENST00000367042.6	c.98-336T>G		intron_variant		1	NM_172351.3	ENSP00000356009	A2

Frequencies

GnomAD3 genomes AF: 0.120 AC: 18300 AN: 152106 Hom.: 1245 Cov.: 32

Gnomad AFR AF: 0.0769

Gnomad AMI AF: 0.0559

Gnomad AMR AF: 0.117

Gnomad ASJ AF: 0.151

Gnomad EAS AF: 0.256

Gnomad SAS AF: 0.205

Gnomad FIN AF: 0.102

Gnomad MID AF: 0.142

Gnomad NFE AF: 0.133

Gnomad OTH AF: 0.142

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

GnomAD4 genome AF: 0.120 AC: 18299 AN: 152222 Hom.: 1244 Cov.: 32 AF XY: 0.120 AC XY: 8938 AN XY: 74444

Gnomad4 AFR AF: 0.0768

Gnomad4 AMR AF: 0.116

Gnomad4 ASJ AF: 0.151

Gnomad4 EAS AF: 0.256

Gnomad4 SAS AF: 0.206

Gnomad4 FIN AF: 0.102

Gnomad4 NFE AF: 0.133

Gnomad4 OTH AF: 0.141

Alfa AF: 0.130 Hom.: 272

Bravo AF: 0.117

Asia WGS AF: 0.209 AC: 727 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.81
CADD	Benign	9.9
DANN	Benign	0.76

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

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

Publications

LitVar

Other links and lift over

dbSNP: rs41317049; hg19: chr1-207930023;