1-196949602-G-T

Position:

chr1-196949602-G-T

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 2P and 6B. PM2BP4_StrongBP6_Moderate

The NM_005666.4(CFHR2):c.206G>T(p.Arg69Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000129 in 1,613,968 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.00072 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000067 ( 0 hom. )

Consequence

CFHR2
NM_005666.4 missense

Scores

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: -3.22

Variant links:

Genes affected

CFHR2 (HGNC:4890): (complement factor H related 2) This gene belongs to a family of complement factor H-related genes (CFHR), which are clustered together with complement factor H gene on chromosome 1, and are involved in regulation of complement. Mutations in CFHR genes have been associated with dense deposit disease and atypical haemolytic-uraemic syndrome. Alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Aug 2015]

CFHR2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.013626069).

BP6

Variant 1-196949602-G-T is Benign according to our data. Variant chr1-196949602-G-T is described in ClinVar as [Likely_benign]. Clinvar id is 2581641.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CFHR2	NM_005666.4 linkuse as main transcript	c.206G>T	p.Arg69Leu	missense_variant	2/5	ENST00000367415.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CFHR2	ENST00000367415.8 linkuse as main transcript	c.206G>T	p.Arg69Leu	missense_variant	2/5	1	NM_005666.4	P2	P36980-1

Frequencies

GnomAD3 genomes

AF:

0.000703

AC:

107

AN:

152186

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00244

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000393

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

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

GnomAD3 exomes

AF:

0.000255

AC:

AN:

251208

Hom.:

AF XY:

0.000140

AC XY:

AN XY:

135776

show subpopulations

Gnomad AFR exome

AF:

0.00314

Gnomad AMR exome

AF:

0.000348

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000880

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000670

AC:

AN:

1461664

Hom.:

Cov.:

AF XY:

0.0000619

AC XY:

AN XY:

727134

show subpopulations

Gnomad4 AFR exome

AF:

0.00197

Gnomad4 AMR exome

AF:

0.000269

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000270

Gnomad4 OTH exome

AF:

0.000282

GnomAD4 genome

AF:

0.000722

AC:

110

AN:

152304

Hom.:

Cov.:

AF XY:

0.000712

AC XY:

AN XY:

74474

show subpopulations

Gnomad4 AFR

AF:

0.00250

Gnomad4 AMR

AF:

0.000392

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000219

Hom.:

Bravo

AF:

0.000941

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.00318

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000362

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Aug 10, 2023

Variant summary: CFHR2 c.206G>T (p.Arg69Leu) results in a non-conservative amino acid change in the encoded protein sequence. Three of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 0.00025 in 251208 control chromosomes, predominantly at a frequency of 0.0031 within the African or African-American subpopulation in the gnomAD database. The observed variant frequency within African or African-American control individuals in the gnomAD database is approximately 19.61 fold of the estimated maximal expected allele frequency for a pathogenic variant in CFHR2 causing Genetic Atypical Hemolytic Uremic Syndrome phenotype (0.00016), strongly suggesting that the variant is a benign polymorphism found primarily in populations of African or African-American origin. To our knowledge, no occurrence of c.206G>T in individuals affected with Genetic Atypical Hemolytic Uremic Syndrome and no experimental evidence demonstrating its impact on protein function have been reported. No submitters have cited clinical-significance assessments for this variant to ClinVar after 2014. Based on the evidence outlined above, the variant was classified as likely benign. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.27

BayesDel_addAF

Benign

-0.47

BayesDel_noAF

Benign

-0.46

CADD

Benign

0.40

DANN

Benign

0.93

DEOGEN2

Benign

0.021

.;T;T

Eigen

Benign

-0.97

Eigen_PC

Benign

-1.3

FATHMM_MKL

Benign

0.0047

LIST_S2

Benign

0.58

T;T;T

M_CAP

Benign

0.043

MetaRNN

Benign

0.014

T;T;T

MetaSVM

Benign

-0.75

MutationAssessor

Uncertain

2.2

.;M;.

MutationTaster

Benign

1.0

N;N

PrimateAI

Benign

0.26

PROVEAN

Benign

-2.2

.;N;.

REVEL

Benign

0.27

Sift

Benign

0.36

.;T;.

Sift4G

Benign

0.47

.;T;T

Polyphen

0.98

.;D;.

Vest4

0.14, 0.15

MVP

0.40

MPC

0.033

ClinPred

0.060

GERP RS

-6.3

Varity_R

0.066

gMVP

0.43

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.090

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over