Variant 20-5916350-A-G details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001819.3(CHGB):c.74A>G(p.Asn25Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000799 in 1,613,554 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00059 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00082 ( 0 hom. )

Consequence

CHGB
NM_001819.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.375

Variant links:

Genes affected

CHGB (HGNC:1930): (chromogranin B) This gene encodes a tyrosine-sulfated secretory protein abundant in peptidergic endocrine cells and neurons. This protein may serve as a precursor for regulatory peptides. [provided by RefSeq, Jan 2009]

CHGB links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.10011637).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CHGB	NM_001819.3 linkuse as main transcript	c.74A>G	p.Asn25Ser	missense_variant	2/5	ENST00000378961.9	NP_001810.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris
CHGB	ENST00000378961.9 linkuse as main transcript	c.74A>G	p.Asn25Ser	missense_variant	2/5	1	NM_001819.3	ENSP00000368244	P1
CHGB	ENST00000455042.1 linkuse as main transcript	c.14A>G	p.Asn5Ser	missense_variant	3/5	3		ENSP00000416643
CHGB	ENST00000488832.1 linkuse as main transcript	n.853A>G		non_coding_transcript_exon_variant	1/2	2

Frequencies

GnomAD3 genomes

AF:

0.000591

AC:

AN:

152234

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000193

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000981

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:

0.000985

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000366

AC:

AN:

251128

Hom.:

AF XY:

0.000339

AC XY:

AN XY:

135718

show subpopulations

Gnomad AFR exome

AF:

0.000123

Gnomad AMR exome

AF:

0.000405

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:

0.000616

Gnomad OTH exome

AF:

0.000979

GnomAD4 exome

AF:

0.000820

AC:

1199

AN:

1461320

Hom.:

Cov.:

AF XY:

0.000746

AC XY:

542

AN XY:

726948

show subpopulations

Gnomad4 AFR exome

AF:

0.0000598

Gnomad4 AMR exome

AF:

0.000380

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:

0.000999

Gnomad4 OTH exome

AF:

0.00116

GnomAD4 genome

AF:

0.000591

AC:

AN:

152234

Hom.:

Cov.:

AF XY:

0.000632

AC XY:

AN XY:

74364

show subpopulations

Gnomad4 AFR

AF:

0.000193

Gnomad4 AMR

AF:

0.000981

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000985

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000604

Hom.:

Bravo

AF:

0.000552

TwinsUK

AF:

0.000809

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000698

AC:

ExAC

AF:

0.000272

AC:

EpiCase

AF:

0.000654

EpiControl

AF:

0.00107

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

Jun 18, 2021

The c.74A>G (p.N25S) alteration is located in exon 2 (coding exon 2) of the CHGB gene. This alteration results from a A to G substitution at nucleotide position 74, causing the asparagine (N) at amino acid position 25 to be replaced by a serine (S). 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

0.077

BayesDel_addAF

Benign

-0.67

BayesDel_noAF

Benign

-0.77

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.12

T;T

Eigen

Benign

-0.35

Eigen_PC

Benign

-0.25

FATHMM_MKL

Benign

0.53

LIST_S2

Benign

0.68

T;T

M_CAP

Benign

0.0033

MetaRNN

Benign

0.10

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.2

L;.

MutationTaster

Benign

0.94

PrimateAI

Benign

0.33

PROVEAN

Benign

-0.36

N;N

REVEL

Benign

0.056

Sift

Benign

0.063

T;T

Sift4G

Benign

0.15

T;T

Polyphen

0.022

B;.

Vest4

0.13

MVP

0.42

MPC

0.076

ClinPred

0.016

GERP RS

0.74

Varity_R

0.031

gMVP

0.061

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

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