rs6677604

Positions:

• chr1-196717788-G-A

Variant summary

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

The NM_000186.4(CFH):​c.1696+2019G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.232 in 151,982 control chromosomes in the GnomAD database, including 4,775 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 0.23 (4775 hom., cov: 32)
• Consequence: CFH NM_000186.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.529

Genes affected

CFH (HGNC:4883): (complement factor H) This gene is a member of the Regulator of Complement Activation (RCA) gene cluster and encodes a protein with twenty short consensus repeat (SCR) domains. This protein is secreted into the bloodstream and has an essential role in the regulation of complement activation, restricting this innate defense mechanism to microbial infections. Mutations in this gene have been associated with hemolytic-uremic syndrome (HUS) and chronic hypocomplementemic nephropathy. Alternate transcriptional splice variants, encoding different isoforms, have been characterized. [provided by RefSeq, Oct 2011]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.91).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.346 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CFH	NM_000186.4	c.1696+2019G>A		intron_variant		ENST00000367429.9	NP_000177.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CFH	ENST00000367429.9	c.1696+2019G>A		intron_variant		1	NM_000186.4	ENSP00000356399	P2

Frequencies

GnomAD3 genomes AF: 0.232 AC: 35258 AN: 151864 Hom.: 4777 Cov.: 32

Gnomad AFR AF: 0.351

Gnomad AMI AF: 0.122

Gnomad AMR AF: 0.167

Gnomad ASJ AF: 0.270

Gnomad EAS AF: 0.0548

Gnomad SAS AF: 0.326

Gnomad FIN AF: 0.130

Gnomad MID AF: 0.339

Gnomad NFE AF: 0.196

Gnomad OTH AF: 0.250

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

GnomAD4 genome AF: 0.232 AC: 35267 AN: 151982 Hom.: 4775 Cov.: 32 AF XY: 0.231 AC XY: 17186 AN XY: 74300

Gnomad4 AFR AF: 0.351

Gnomad4 AMR AF: 0.167

Gnomad4 ASJ AF: 0.270

Gnomad4 EAS AF: 0.0548

Gnomad4 SAS AF: 0.325

Gnomad4 FIN AF: 0.130

Gnomad4 NFE AF: 0.196

Gnomad4 OTH AF: 0.250

Alfa AF: 0.196 Hom.: 7367

Bravo AF: 0.235

Asia WGS AF: 0.198 AC: 688 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.91
CADD	Benign	0.95
DANN	Benign	0.30

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		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: rs6677604; hg19: chr1-196686918;