Variant 19-49047930-C-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_033183.3(CGB8):c.223G>A(p.Val75Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. In-silico tool predicts a benign outcome for this variant. 13/19 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00012 ( 0 hom., cov: 24)

Exomes 𝑓: 0.000080 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

CGB8
NM_033183.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.117

Variant links:

Genes affected

CGB8 (HGNC:16453): (chorionic gonadotropin subunit beta 8) This gene is a member of the glycoprotein hormone beta chain family and encodes the beta 8 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]

CGB8 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.109559745).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CGB8	NM_033183.3 linkuse as main transcript	c.223G>A	p.Val75Met	missense_variant	3/3	ENST00000448456.4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CGB8	ENST00000448456.4 linkuse as main transcript	c.223G>A	p.Val75Met	missense_variant	3/3	1	NM_033183.3	P1	P0DN86-1

Frequencies

GnomAD3 genomes

AF:

0.00

AC:

AN:

144444

Hom.:

Cov.:

FAILED QC

Gnomad AFR

AF:

0.0000271

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000877

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:

0.0000602

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000148

AC:

AN:

54016

Hom.:

AF XY:

0.000147

AC XY:

AN XY:

27212

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000655

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:

0.0000496

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

Data not reliable, filtered out with message: AS_VQSR

AF:

0.0000798

AC:

105

AN:

1316208

Hom.:

Cov.:

AF XY:

0.0000837

AC XY:

AN XY:

656744

show subpopulations

Gnomad4 AFR exome

AF:

0.000104

Gnomad4 AMR exome

AF:

0.000342

Gnomad4 ASJ exome

AF:

0.0000436

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000673

Gnomad4 OTH exome

AF:

0.000307

GnomAD4 genome

Data not reliable, filtered out with message: AS_VQSR

AF:

0.000125

AC:

AN:

144444

Hom.:

Cov.:

AF XY:

0.0000854

AC XY:

AN XY:

70258

show subpopulations

Gnomad4 AFR

AF:

0.0000271

Gnomad4 AMR

AF:

0.000877

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000602

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000843

Hom.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Sep 27, 2021

The c.223G>A (p.V75M) alteration is located in exon 3 (coding exon 3) of the CGB8 gene. This alteration results from a G to A substitution at nucleotide position 223, causing the valine (V) at amino acid position 75 to be replaced by a methionine (M). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.14

BayesDel_addAF

Benign

-0.32

BayesDel_noAF

Benign

-0.33

CADD

Benign

8.7

DANN

Uncertain

0.99

Eigen

Benign

-0.67

Eigen_PC

Benign

-0.84

FATHMM_MKL

Benign

0.022

LIST_S2

Uncertain

0.94

M_CAP

Benign

0.051

MetaRNN

Benign

0.11

MetaSVM

Benign

-0.44

MutationTaster

Benign

1.0

D;N;N

PrimateAI

Uncertain

0.73

PROVEAN

Benign

0.68

REVEL

Benign

0.17

Sift

Benign

0.11

Sift4G

Benign

0.11

Vest4

0.063

MutPred

0.30

Gain of catalytic residue at V75 (P = 0.0037);

MVP

0.48

MPC

0.012

ClinPred

0.062

GERP RS

-0.60

gMVP

0.039

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

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