Genetic Variant CGB7:p.Arg63Gly (chr19-49054602-G-C) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 0P and 0B.

The NM_001385261.1(CGB7):c.187C>G(p.Arg63Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. 13/20 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R63C) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000076 ( 0 hom., cov: 18)

Failed GnomAD Quality Control

Consequence

CGB7
NM_001385261.1 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 2.53

Publications

0 publications found

Variant links:

Genes affected

CGB7 (HGNC:16451): (chorionic gonadotropin subunit beta 7) This gene is a member of the glycoprotein hormone beta chain family and encodes the beta 7 subunit of chorionic gonadotropin (CG). Glycoprotein hormones are heterodimers consisting of a common alpha subunit and an unique beta subunit which confers biological specificity. CG is produced by the trophoblastic cells of the placenta and stimulates the ovaries to synthesize the steroids that are essential for the maintenance of pregnancy. The beta subunit of CG is encoded by 6 genes which are arranged in tandem and inverted pairs on chromosome 19q13.3 and contiguous with the luteinizing hormone beta subunit gene. [provided by RefSeq, Jul 2008]

CGB7 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CGB7	NM_001385261.1 link	c.187C>G	p.Arg63Gly	missense_variant	Exon 5 of 5	ENST00000684222.1	NP_001372190.1
CGB7	NM_033142.2 link	c.187C>G	p.Arg63Gly	missense_variant	Exon 5 of 5		NP_149133.1	P0DN87A0A0F7RQF0

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
CGB7	ENST00000684222.1 link	c.187C>G	p.Arg63Gly	missense_variant	Exon 5 of 5		NM_001385261.1	ENSP00000507822.1	P0DN87
CGB7	ENST00000596965.5 link	c.187C>G	p.Arg63Gly	missense_variant	Exon 5 of 5	2		ENSP00000469076.1	P0DN87
CGB7	ENST00000597853.5 link	c.187C>G	p.Arg63Gly	missense_variant	Exon 5 of 5	2		ENSP00000470813.1	P0DN87

Frequencies

GnomAD3 genomes

AF:

0.00000762

AC:

AN:

131200

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000276

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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

GnomAD4 exome

Cov.:

GnomAD4 genome

Data not reliable, filtered out with message: AS_VQSR

AF:

0.00000762

AC:

AN:

131200

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

62760

show subpopulations

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

African (AFR)

AF:

0.0000276

AC:

AN:

36168

American (AMR)

AF:

0.00

AC:

AN:

13158

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3180

East Asian (EAS)

AF:

0.00

AC:

AN:

4498

South Asian (SAS)

AF:

0.00

AC:

AN:

3714

European-Finnish (FIN)

AF:

0.00

AC:

AN:

8176

Middle Eastern (MID)

AF:

0.00

AC:

AN:

300

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

59424

Other (OTH)

AF:

0.00

AC:

AN:

1720

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.225

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.0000843

Hom.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.41

BayesDel_addAF

Benign

-0.066

BayesDel_noAF

Benign

-0.33

CADD

Benign

(source)

DANN

Benign

0.96

DEOGEN2

Uncertain

0.65

D;D;D

Eigen

Benign

-0.42

Eigen_PC

Benign

-0.52

FATHMM_MKL

Uncertain

0.85

LIST_S2

Uncertain

0.87

D;.;.

M_CAP

Benign

0.037

MetaRNN

Uncertain

0.46

T;T;T

MetaSVM

Benign

-1.0

PhyloP100

2.5

PROVEAN

Benign

-2.2

N;.;.

REVEL

Benign

0.21

Sift

Benign

0.15

T;.;.

Sift4G

Benign

0.10

T;T;T

Vest4

0.51

MVP

0.39

MPC

2.4

ClinPred

0.50

GERP RS

1.8

Varity_R

0.11

gMVP

0.34

Mutation Taster

=91/9

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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19-49054602-G-C

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over