rs63751208

Variant names:

Your query was ambiguous. Multiple possible variants found:

Variant summary

Our verdict is . The variant received 6 classification points (ACMG Germline Pathogenicity v2019): 8P and 2B. PS3PP5_StrongBP4_Moderate

The ENST00000647020.1(HBB):c.-151C>T variant causes a 5 prime UTR premature start codon gain change involving the alteration of a non-conserved nucleotide. The variant allele was found at a cumulative frequency of 0.0000957 (AC=66) in the gnomAD database across 689,530 control chromosomes, including 1 homozygote. The grpmax filtering allele frequency (95% CI) is 0.000571. In-silico predictor (BayesDel (noAF)) classifies this variant as likely benign. Variant has been reported in ClinVar as Pathogenic/Likely Pathogenic (★★). ClinVar reports functional evidence for this variant: "SCV000697087: This variant decreased promoter activity by 70% (Gonzalez-Redondo_1989)." and additional evidence is available in ClinVar.

Frequency

Genomes: 𝑓 0.000066 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00010 ( 1 hom. )

Consequence

HBB
ENST00000647020.1 5_prime_UTR_premature_start_codon_gain

Scores

Clinical Significance

Pathogenic criteria provided, multiple submitters, no conflicts P:15U:1O:1

Conservation

PhyloP100: 1.81

Publications

13 publications found

Variant links:

Genes affected

HBB (HGNC:4827): (hemoglobin subunit beta) The alpha (HBA) and beta (HBB) loci determine the structure of the 2 types of polypeptide chains in adult hemoglobin, Hb A. The normal adult hemoglobin tetramer consists of two alpha chains and two beta chains. Mutant beta globin causes sickle cell anemia. Absence of beta chain causes beta-zero-thalassemia. Reduced amounts of detectable beta globin causes beta-plus-thalassemia. 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]

HBB Gene-Disease associations (from GenCC):

dominant beta-thalassemia
Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), ClinGen, Orphanet, PanelApp Australia
erythrocytosis, familial, 6
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae), PanelApp Australia, ClinGen
hemoglobin M disease
Inheritance: AD Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: PanelApp Australia, Orphanet, ClinGen, Ambry Genetics
unstable hemoglobin disease
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
beta thalassemia
Inheritance: AR Classification: DEFINITIVE Submitted by: Myriad Women's Health
beta-thalassemia HBB/LCRB
Inheritance: AR, SD Classification: DEFINITIVE, STRONG Submitted by: ClinGen, PanelApp Australia, Labcorp Genetics (formerly Invitae), Ambry Genetics
sickle cell disease and related diseases
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
Heinz body anemia
Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae), PanelApp Australia
hereditary persistence of fetal hemoglobin
Inheritance: AD Classification: STRONG Submitted by: PanelApp Australia
delta-beta-thalassemia
Inheritance: AR, AD Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, PanelApp Australia
sickle cell disease
Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: PanelApp Australia, Labcorp Genetics (formerly Invitae), Orphanet
hereditary persistence of fetal hemoglobin-beta-thalassemia syndrome
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
beta-thalassemia intermedia
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
beta-thalassemia major
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
hemoglobin C disease
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
hemoglobin C-beta-thalassemia syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
hemoglobin E disease
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
hemoglobin E-beta-thalassemia syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
hereditary persistence of fetal hemoglobin-sickle cell disease syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
sickle cell-beta-thalassemia disease syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
sickle cell-hemoglobin c disease syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
sickle cell-hemoglobin d disease syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
sickle cell-hemoglobin E disease syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

HBB links:

ENSG00000298932 (HGNC:):

ENSG00000298932 links:

Genome browser will be placed here

new If you want to explore the variant's impact on the transcript ENST00000647020.1, check out the Mutation Effect Viewer. This is especially useful for frameshift variants or if you want to visualize the effect of exon loss / intron retention.

Classification according to ACMG Germline Pathogenicity v2019

Classification was made for transcript

Our verdict: Likely_pathogenic. The variant received 6 points.

PS3

Well-established functional study supports damaging effect (PS3); SCV000697087: This variant decreased promoter activity by 70% (Gonzalez-Redondo_1989).; SCV004847530: "In vitro functional studies support an impact on promoter activity" PMID:2713503; SCV000961462: Studies have shown that this variant alters HBB gene expression (PMID: 2713503).; SCV001470514: A functional study indicate this variant results in reduced HBB promoter activity (PMID: 2713503 (1989)).; SCV002574669: Published functional studies demonstrate a significant loss of function (Gonzalez-Redondo et al., 1989);; SCV004724943: This variant is predicted to disrupt the CACCC promoter motif and has been reported to be causative for Beta-Thalassemia in the presence of a second pathogenic allele (Gonzalez-Redondo et al. 1989. PubMed ID: 2713503; Rund et al. 1997. PubMed ID: 8980256; Ristaldi et al. 1999. PubMed ID: 10575515).

PP5

ClinVar 2-star pathogenic — strong (PP5); ClinVar submissions overwhelmingly pathogenic (≥10 total, ≥80% P/LP, <10% B/LB) — strong (PP5, count-based); ClinVar germline classification: Pathogenic/Likely Pathogenic, 2 star(s). ClinVar submissions strongly and reliably favor pathogenicity (15/16 total P/LP).

BP4

Computational evidence supports benign — no pathogenic computational or splicing signal (BP4); No splicing predictor data available.; Germline computational verdict: benign (Moderate).

Variant Effect in Transcripts

Automated classification analysis was done for transcript: ENST00000647020.1. You can select a different transcript below to see updated classification assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	HBB	NM_000518.5	MANE Select	c.-151C>T		upstream_gene	N/A	NP_000509.1	D9YZU5

Ensembl Transcripts

Gene	Transcript	HGVSc	Effect	Exon Rank	Protein	UniProt
HBB	ENST00000647020.1	c.-151C>T	5_prime_UTR_premature_start_codon_gain	Exon 1 of 3	ENSP00000494175.1	P68871
HBB	ENST00000647020.1	c.-151C>T	5_prime_UTR	Exon 1 of 3	ENSP00000494175.1	P68871
HBB	ENST00000883533.1	c.-19+29C>T	intron	N/A	ENSP00000553592.1

Frequencies

GnomAD3 genomes

AF:

0.0000657

AC:

AN:

152190

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:

0.000147

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.000104

AC:

AN:

537340

Hom.:

Cov.:

AF XY:

0.000124

AC XY:

AN XY:

290572

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

15442

American (AMR)

AF:

0.0000292

AC:

AN:

34190

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

18616

East Asian (EAS)

AF:

0.00

AC:

AN:

31944

South Asian (SAS)

AF:

0.000117

AC:

AN:

60034

European-Finnish (FIN)

AF:

0.00

AC:

AN:

35136

Middle Eastern (MID)

AF:

0.00168

AC:

AN:

2388

European-Non Finnish (NFE)

AF:

0.000129

AC:

AN:

309916

Other (OTH)

AF:

0.000135

AC:

AN:

29674

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.496

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

AF:

0.0000657

AC:

AN:

152190

Hom.:

Cov.:

AF XY:

0.0000672

AC XY:

AN XY:

74352

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41442

American (AMR)

AF:

0.00

AC:

AN:

15282

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5192

South Asian (SAS)

AF:

0.00

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10622

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.000147

AC:

AN:

68034

Other (OTH)

AF:

0.00

AC:

AN:

2090

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.455

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome 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

Alfa

AF:

0.0000554

Hom.:

Bravo

AF:

0.0000567

Local populations

Turkish Variome

AF:

0.000647

AC:

AN:

1546

Hom.:

ClinVar

ClinVar submissions

Significance:Pathogenic

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (6)

beta Thalassemia (6)

BETA-PLUS-THALASSEMIA (1)

Beta-thalassemia HBB/LCRB (1)

Hb SS disease;C0019025:Hereditary persistence of fetal hemoglobin;C0700299:Heinz body anemia;C1840779:METHEMOGLOBINEMIA, BETA TYPE;C1858990:Dominant beta-thalassemia;C1970028:Malaria, susceptibility to;C4693822:Erythrocytosis, familial, 6;CN322236:Beta-thalassemia HBB/LCRB (1)

HBB-related disorder (1)

Malaria, susceptibility to (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.34

CADD

Benign

(source)

DANN

Benign

0.76

PhyloP100

1.8

PromoterAI

-0.15

Neutral

(source)

Mutation Taster

=8/92

disease causing (ClinVar)

(source)

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

Classification according to ACMG Germline Pathogenicity v2019

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

Local populations

ClinVar

Computational scores

Splicing

Publications

Other links and lift over