19-6696167-G-C

Variant names:

• chr19-6696167-G-C
• rs10410674
• NM_000064.4:c.2950+212C>G

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_000064.4(C3):​c.2950+212C>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000693 in 144,336 control chromosomes in the GnomAD database, with no homozygous occurrence. 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 0.0000069 (0 hom., cov: 22)
• Consequence: C3 NM_000064.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.546
• Publications: 1 publications found

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]

C3 Gene-Disease associations (from GenCC):

• atypical hemolytic-uremic syndrome with C3 anomaly

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), ClinGen
• complement component 3 deficiency

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, Laboratory for Molecular Medicine
• C3 glomerulonephritis

  Inheritance: AD Classification: MODERATE Submitted by: ClinGen

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.95).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000064.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	C3	NM_000064.4	MANE Select	c.2950+212C>G		intron	N/A	NP_000055.2

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	C3	ENST00000245907.11	TSL:1 MANE Select	c.2950+212C>G		intron	N/A	ENSP00000245907.4
	C3	ENST00000695654.1		c.2074+212C>G		intron	N/A	ENSP00000512085.1
	C3	ENST00000695652.1		c.2827+212C>G		intron	N/A	ENSP00000512083.1

Frequencies

GnomAD3 genomes AF: 0.00000693 AC: 1 AN: 144336 Hom.: 0 Cov.: 22

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.000207

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

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

GnomAD4 genome AF: 0.00000693 AC: 1 AN: 144336 Hom.: 0 Cov.: 22 AF XY: 0.0000144 AC XY: 1 AN XY: 69618

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 38240

American (AMR) AF: 0.00 AC: 0 AN: 14250

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3444

East Asian (EAS) AF: 0.000207 AC: 1 AN: 4838

South Asian (SAS) AF: 0.00 AC: 0 AN: 4506

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 9034

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 298

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 66900

Other (OTH) AF: 0.00 AC: 0 AN: 1932

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Alfa AF: 0.00 Hom.: 610

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.95
CADD	Benign	0.96
DANN	Benign	0.55
PhyloP100		-0.55

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: rs10410674; hg19: chr19-6696178;