Variant 11-5254380-A-G details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PP3_Moderate

The NM_000184.3(HBG2):c.227T>C(p.Ile76Thr) variant causes a missense change. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as other (no stars). Another nucleotide change resulting in same amino acid change has been previously reported as Likely benignin UniProt. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. I76V) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00011 ( 0 hom., cov: 31)

Exomes 𝑓: 0.0000096 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

HBG2
NM_000184.3 missense

Scores

Clinical Significance

other no assertion criteria provided O:2

Conservation

PhyloP100: 4.54

Variant links:

Genes affected

HBG2 (HGNC:4832): (hemoglobin subunit gamma 2) The gamma globin genes (HBG1 and HBG2) are normally expressed in the fetal liver, spleen and bone marrow. Two gamma chains together with two alpha chains constitute fetal hemoglobin (HbF) which is normally replaced by adult hemoglobin (HbA) at birth. In some beta-thalassemias and related conditions, gamma chain production continues into adulthood. The two types of gamma chains differ at residue 136 where glycine is found in the G-gamma product (HBG2) and alanine is found in the A-gamma product (HBG1). The former is predominant at birth. The order of the genes in the beta-globin cluster is: 5'- epsilon -- gamma-G -- gamma-A -- delta -- beta--3'. [provided by RefSeq, Jul 2008]

HBG2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.925

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
HBG2	NM_000184.3 linkuse as main transcript	c.227T>C	p.Ile76Thr	missense_variant	2/3	ENST00000336906.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris
HBG2	ENST00000336906.6 linkuse as main transcript	c.227T>C	p.Ile76Thr	missense_variant	2/3	1	NM_000184.3	P1
HBG2	ENST00000380252.6 linkuse as main transcript	c.62T>C	p.Ile21Thr	missense_variant	2/3	3
HBG2	ENST00000444587.1 linkuse as main transcript	c.*96T>C		3_prime_UTR_variant	2/3	2

Frequencies

GnomAD3 genomes

AF:

0.00

AC:

AN:

152256

Hom.:

Cov.:

FAILED QC

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

Gnomad ASJ

AF:

0.000867

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.000565

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000882

Gnomad OTH

AF:

0.00

GnomAD4 exome

Data not reliable, filtered out with message: AS_VQSR

AF:

0.00000958

AC:

AN:

1461548

Hom.:

Cov.:

AF XY:

0.0000110

AC XY:

AN XY:

727070

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000756

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.0000563

Gnomad4 NFE exome

AF:

0.00000719

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Data not reliable, filtered out with message: AS_VQSR

AF:

0.000112

AC:

AN:

152256

Hom.:

Cov.:

AF XY:

0.000161

AC XY:

AN XY:

74384

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.000867

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.000565

Gnomad4 NFE

AF:

0.0000882

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000237

Hom.:

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: other

Submissions summary: Other:2

Revision: no assertion criteria provided

LINK: link

Submissions by phenotype

HEMOGLOBIN F (WAYNESBORO)

Other:1

other, no assertion criteria provided

literature only

OMIM

Aug 05, 2011

- -

HEMOGLOBIN F (LESVOS)

Other:1

other, no assertion criteria provided

literature only

OMIM

Aug 05, 2011

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.41

BayesDel_addAF

Pathogenic

0.29

BayesDel_noAF

Pathogenic

0.18

Cadd

Benign

Dann

Uncertain

0.99

Eigen

Benign

-0.26

Eigen_PC

Benign

-0.34

FATHMM_MKL

Benign

0.73

LIST_S2

Benign

0.71

T;T;T;T

M_CAP

Uncertain

0.15

MetaRNN

Pathogenic

0.93

D;D;D;D

MetaSVM

Uncertain

0.23

MutationTaster

Benign

1.0

N;N;N

Polyphen

0.35

.;.;B;.

Vest4

0.37

MutPred

0.81

Gain of disorder (P = 0.0095);Gain of disorder (P = 0.0095);Gain of disorder (P = 0.0095);.;

MVP

0.95

ClinPred

0.82

GERP RS

2.9

RBP_binding_hub_radar

1.1

RBP_regulation_power_radar

2.2

Varity_R

0.37

gMVP

0.77

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