Genetic Variant HBD:p.Ala71Val (chr11-5234094-G-A) – ACMG Classification: Uncertain_significance (3 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2PP3

The NM_000519.4(HBD):c.212C>T(p.Ala71Val) variant causes a missense change. The variant allele was found at a frequency of 0.00000658 in 152,058 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Consequence

HBD
NM_000519.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 4.73

Publications

1 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:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.759

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000519.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	HBD	NM_000519.4	MANE Select	c.212C>T	p.Ala71Val	missense	Exon 2 of 3	NP_000510.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
HBD	ENST00000650601.1	MANE Select	c.212C>T	p.Ala71Val	missense	Exon 2 of 3	ENSP00000497529.1
HBD	ENST00000643122.1		c.212C>T	p.Ala71Val	missense	Exon 3 of 4	ENSP00000494708.1
HBD	ENST00000292901.7	TSL:3	c.212C>T	p.Ala71Val	missense	Exon 2 of 3	ENSP00000292901.3

Frequencies

GnomAD3 genomes

AF:

0.00000658

AC:

AN:

152058

Hom.:

Cov.:

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD4 exome

Cov.:

GnomAD4 genome

AF:

0.00000658

AC:

AN:

152058

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74272

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41382

American (AMR)

AF:

0.00

AC:

AN:

15260

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3466

East Asian (EAS)

AF:

0.00

AC:

AN:

5178

South Asian (SAS)

AF:

0.00

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10596

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68028

Other (OTH)

AF:

0.00

AC:

AN:

2090

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.425

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.72

BayesDel_addAF

Pathogenic

0.29

BayesDel_noAF

Pathogenic

0.18

CADD

Benign

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.023

Eigen

Benign

0.095

Eigen_PC

Benign

-0.058

FATHMM_MKL

Uncertain

0.82

LIST_S2

Benign

0.81

M_CAP

Uncertain

0.17

MetaRNN

Pathogenic

0.76

MetaSVM

Uncertain

0.28

MutationAssessor

Pathogenic

3.3

PhyloP100

4.7

PrimateAI

Benign

0.35

PROVEAN

Uncertain

-2.9

REVEL

Uncertain

0.61

Sift

Uncertain

0.0010

Sift4G

Uncertain

0.021

Polyphen

0.97

Vest4

0.42

MutPred

0.63

Loss of disorder (P = 0.0975)

MVP

0.97

MPC

0.045

ClinPred

0.98

GERP RS

3.4

PromoterAI

-0.0080

Neutral

(source)

Varity_R

0.57

gMVP

0.71

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over