Genetic Variant HBD:p.Gln88Glu (chr11-5234044-G-C) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_000519.4(HBD):c.262C>G(p.Gln88Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000547 in 1,461,862 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000055 ( 0 hom. )

Consequence

HBD
NM_000519.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -1.26

Publications

0 publications found

Variant links:

Genes affected

HBD (HGNC:4829): (hemoglobin subunit delta) The delta (HBD) and beta (HBB) genes are normally expressed in the adult: two alpha chains plus two beta chains constitute HbA, which in normal adult life comprises about 97% of the total hemoglobin. Two alpha chains plus two delta chains constitute HbA-2, which with HbF comprises the remaining 3% of adult hemoglobin. Five beta-like globin genes are found within a 45 kb cluster on chromosome 11 in the following order: 5'-epsilon--Ggamma--Agamma--delta--beta-3'. Mutations in the delta-globin gene are associated with beta-thalassemia. [provided by RefSeq, Jul 2008]

HBD Gene-Disease associations (from GenCC):

delta-beta-thalassemia
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

HBD links:

ENSG00000298932 (HGNC:):

ENSG00000298932 links:

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ACMG classification

Classification was made for transcript

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

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.17848942).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
HBD	NM_000519.4 link	c.262C>G	p.Gln88Glu	missense_variant	Exon 2 of 3	ENST00000650601.1	NP_000510.1	P02042A0N071

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
HBD	ENST00000650601.1 link	c.262C>G	p.Gln88Glu	missense_variant	Exon 2 of 3		NM_000519.4	ENSP00000497529.1		P02042

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000547

AC:

AN:

1461862

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

727240

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44716

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53420

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00000719

AC:

AN:

1111988

Other (OTH)

AF:

0.00

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.431

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Uncertain

0.024

BayesDel_noAF

Benign

-0.20

CADD

Benign

1.0

(source)

DANN

Benign

0.79

DEOGEN2

Benign

0.0021

T;T;T;T;T

Eigen

Benign

-1.5

Eigen_PC

Benign

-1.5

FATHMM_MKL

Benign

0.065

LIST_S2

Benign

0.57

T;.;.;T;T

M_CAP

Uncertain

0.12

MetaRNN

Benign

0.18

T;T;T;T;T

MetaSVM

Benign

-0.61

MutationAssessor

Benign

0.39

.;N;N;N;.

PhyloP100

-1.3

PrimateAI

Benign

0.29

PROVEAN

Benign

-0.55

N;.;N;.;N

REVEL

Uncertain

0.40

Sift

Benign

0.045

D;.;T;.;T

Sift4G

Benign

0.76

T;.;T;.;.

Polyphen

0.0

.;B;B;B;.

Vest4

0.17

MutPred

0.30

Gain of ubiquitination at K83 (P = 0.0609);Gain of ubiquitination at K83 (P = 0.0609);Gain of ubiquitination at K83 (P = 0.0609);Gain of ubiquitination at K83 (P = 0.0609);Gain of ubiquitination at K83 (P = 0.0609);

MVP

0.68

MPC

0.012

ClinPred

0.11

GERP RS

-7.9

PromoterAI

-0.0065

Neutral

(source)

Varity_R

0.15

gMVP

0.28

Mutation Taster

=6/94

disease causing

(source)

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

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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