19-6678742-A-G

Position:

• chr19-6678742-A-G

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 0P and 14B. BP4_Strong BP6_Moderate BA1

The NM_000064.4(C3):​c.4631-287T>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.498 in 151,808 control chromosomes in the GnomAD database, including 19,057 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

• Frequency: Genomes: 𝑓 0.50 (19057 hom., cov: 31)
• Consequence: C3 NM_000064.4 intron
• Clinical Significance: Benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -0.947

Genes affected

C3 (HGNC:1318): (complement C3) Complement component C3 plays a central role in the activation of complement system. Its activation is required for both classical and alternative complement activation pathways. The encoded preproprotein is proteolytically processed to generate alpha and beta subunits that form the mature protein, which is then further processed to generate numerous peptide products. The C3a peptide, also known as the C3a anaphylatoxin, modulates inflammation and possesses antimicrobial activity. Mutations in this gene are associated with atypical hemolytic uremic syndrome and age-related macular degeneration in human patients. [provided by RefSeq, Nov 2015]

ACMG classification

Verdict is Benign. Variant got -14 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.89).
• BP6: Variant 19-6678742-A-G is Benign according to our data. Variant chr19-6678742-A-G is described in ClinVar as [Benign]. Clinvar id is 1181127.Status of the report is criteria_provided_single_submitter, 1 stars.
• BA1: GnomAd4 highest subpopulation (SAS) allele frequency at 95% confidence interval = 0.573 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
C3	NM_000064.4	c.4631-287T>C		intron_variant		ENST00000245907.11	NP_000055.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
C3	ENST00000245907.11	c.4631-287T>C		intron_variant		1	NM_000064.4	ENSP00000245907	P1

Frequencies

GnomAD3 genomes AF: 0.499 AC: 75628 AN: 151692 Hom.: 19053 Cov.: 31

Gnomad AFR AF: 0.453

Gnomad AMI AF: 0.512

Gnomad AMR AF: 0.521

Gnomad ASJ AF: 0.459

Gnomad EAS AF: 0.538

Gnomad SAS AF: 0.592

Gnomad FIN AF: 0.490

Gnomad MID AF: 0.547

Gnomad NFE AF: 0.513

Gnomad OTH AF: 0.524

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

GnomAD4 genome AF: 0.498 AC: 75645 AN: 151808 Hom.: 19057 Cov.: 31 AF XY: 0.499 AC XY: 36993 AN XY: 74178

Gnomad4 AFR AF: 0.453

Gnomad4 AMR AF: 0.521

Gnomad4 ASJ AF: 0.459

Gnomad4 EAS AF: 0.537

Gnomad4 SAS AF: 0.591

Gnomad4 FIN AF: 0.490

Gnomad4 NFE AF: 0.513

Gnomad4 OTH AF: 0.523

Alfa AF: 0.512 Hom.: 34504

Bravo AF: 0.499

Asia WGS AF: 0.572 AC: 1991 AN: 3478

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Benign:1

Benign, criteria provided, single submitter

clinical testing

GeneDx

Nov 10, 2018

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.89
CADD	Benign	0.92
DANN	Benign	0.45
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.0

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: rs11569562; hg19: chr19-6678753;