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rs34807671

Variant summary

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

The NM_000184.3(HBG2):c.439C>T(p.His147Tyr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000372 in 1,613,946 control chromosomes in the GnomAD database, with no homozygous occurrence. 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.

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)
Exomes 𝑓: 0.0000027 ( 0 hom. )

Consequence

HBG2
NM_000184.3 missense

Scores

3
7
8

Clinical Significance

other no assertion criteria provided O:1

Conservation

PhyloP100: 2.90
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]

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
HBG2NM_000184.3 linkuse as main transcriptc.439C>T p.His147Tyr missense_variant 3/3 ENST00000336906.6

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
HBG2ENST00000336906.6 linkuse as main transcriptc.439C>T p.His147Tyr missense_variant 3/31 NM_000184.3 P1
HBG2ENST00000380252.6 linkuse as main transcriptc.274C>T p.His92Tyr missense_variant 3/33

Frequencies

GnomAD3 genomes
AF:
0.0000131
AC:
2
AN:
152152
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.00
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:
0.0000294
Gnomad OTH
AF:
0.00
GnomAD4 exome
AF:
0.00000274
AC:
4
AN:
1461794
Hom.:
0
Cov.:
32
AF XY:
0.00000275
AC XY:
2
AN XY:
727210
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00000360
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
AF:
0.0000131
AC:
2
AN:
152152
Hom.:
0
Cov.:
32
AF XY:
0.0000135
AC XY:
1
AN XY:
74324
show subpopulations
Gnomad4 AFR
AF:
0.00
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.0000294
Gnomad4 OTH
AF:
0.00
Bravo
AF:
0.00000756
ESP6500AA
AF:
0.00
AC:
0
ESP6500EA
AF:
0.000116
AC:
1

ClinVar

Significance: other
Submissions summary: Other:1
Revision: no assertion criteria provided
LINK: link

Submissions by phenotype

HEMOGLOBIN F (ONODA) Other:1
other, no assertion criteria providedliterature onlyOMIMAug 05, 2011- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.16
BayesDel_addAF
Pathogenic
0.22
D
BayesDel_noAF
Uncertain
0.080
Cadd
Benign
22
Dann
Uncertain
0.99
DEOGEN2
Benign
0.17
T;.
Eigen
Benign
-0.057
Eigen_PC
Benign
-0.19
FATHMM_MKL
Benign
0.73
D
LIST_S2
Benign
0.73
T;T
M_CAP
Uncertain
0.089
D
MetaRNN
Uncertain
0.70
D;D
MetaSVM
Benign
-0.36
T
MutationAssessor
Pathogenic
3.6
H;.
MutationTaster
Benign
0.98
D;D;D
PROVEAN
Uncertain
-4.4
D;.
REVEL
Uncertain
0.57
Sift
Pathogenic
0.0
D;.
Sift4G
Uncertain
0.030
D;.
Polyphen
1.0
D;.
Vest4
0.60
MVP
0.93
ClinPred
0.98
D
GERP RS
2.9
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.3
Varity_R
0.88
gMVP
0.74

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.

Other links and lift over

dbSNP: rs34807671; hg19: chr11-5274512; API