chr1-207756678-T-G

Variant names:

• chr1-207756678-T-G
• rs41317049
• NM_172351.3:c.98-336T>G

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_172359.3(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_172359.3 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.352
• Publications: 3 publications found

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]

CD46 Gene-Disease associations (from GenCC):

• atypical hemolytic-uremic syndrome with MCP/CD46 anomaly

  Inheritance: AD, AR, SD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), Laboratory for Molecular Medicine, Ambry Genetics

ACMG classification

Our verdict: Benign. The variant received -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.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_172359.3. 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
	CD46	NM_172351.3	MANE Select	c.98-336T>G		intron	N/A	NP_758861.1
	CD46	NM_172359.3		c.98-336T>G		intron	N/A	NP_758869.1
	CD46	NM_002389.4		c.98-336T>G		intron	N/A	NP_002380.3

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CD46	ENST00000367042.6	TSL:1 MANE Select	c.98-336T>G		intron	N/A	ENSP00000356009.1
	CD46	ENST00000322875.8	TSL:1	c.98-336T>G		intron	N/A	ENSP00000313875.4
	CD46	ENST00000358170.6	TSL:1	c.98-336T>G		intron	N/A	ENSP00000350893.2

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

African (AFR) AF: 0.0768 AC: 3190 AN: 41560

American (AMR) AF: 0.116 AC: 1781 AN: 15288

Ashkenazi Jewish (ASJ) AF: 0.151 AC: 523 AN: 3466

East Asian (EAS) AF: 0.256 AC: 1322 AN: 5170

South Asian (SAS) AF: 0.206 AC: 991 AN: 4822

European-Finnish (FIN) AF: 0.102 AC: 1084 AN: 10598

Middle Eastern (MID) AF: 0.146 AC: 43 AN: 294

European-Non Finnish (NFE) AF: 0.133 AC: 9017 AN: 68002

Other (OTH) AF: 0.141 AC: 297 AN: 2110

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 v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.81
CADD	Benign	9.9
DANN	Benign	0.76
PhyloP100		-0.35
Mutation Taster		=100/0	polymorphism (auto)

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

Other links and lift over

dbSNP: rs41317049; hg19: chr1-207930023;