chr11-5227013-A-G

Position:

• chr11-5227013-A-G

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_Strong BP6_Very_Strong BA1

The NM_000518.5(HBB):​c.9T>C​(p.His3=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.816 in 1,605,108 control chromosomes in the GnomAD database, including 539,839 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

• Frequency:
  • Genomes: 𝑓 0.82 (51260 hom., cov: 33)
  • Exomes 𝑓: 0.82 (488579 hom.)
• Consequence: HBB NM_000518.5 synonymous
• Clinical Significance: Benign criteria provided, multiple submitters, no conflicts B:18
• Conservation: PhyloP100: -0.886

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]

ACMG classification

Verdict is Benign. Variant got -20 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.73).
• BP6: Variant 11-5227013-A-G is Benign according to our data. Variant chr11-5227013-A-G is described in ClinVar as [Benign]. Clinvar id is 193106.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr11-5227013-A-G is described in Lovd as [Benign].
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.861 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
HBB	NM_000518.5	c.9T>C	p.His3=	synonymous_variant	1/3	ENST00000335295.4	NP_000509.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
HBB	ENST00000335295.4	c.9T>C	p.His3=	synonymous_variant	1/3	1	NM_000518.5	ENSP00000333994	P1

Frequencies

GnomAD3 genomes AF: 0.816 AC: 124106 AN: 152044 Hom.: 51226 Cov.: 33

Gnomad AFR AF: 0.868

Gnomad AMI AF: 0.971

Gnomad AMR AF: 0.728

Gnomad ASJ AF: 0.865

Gnomad EAS AF: 0.490

Gnomad SAS AF: 0.635

Gnomad FIN AF: 0.786

Gnomad MID AF: 0.870

Gnomad NFE AF: 0.841

Gnomad OTH AF: 0.825

GnomAD3 exomes AF: 0.763 AC: 191549 AN: 251090 Hom.: 74777 AF XY: 0.763 AC XY: 103534 AN XY: 135708

Gnomad AFR exome AF: 0.868

Gnomad AMR exome AF: 0.659

Gnomad ASJ exome AF: 0.868

Gnomad EAS exome AF: 0.499

Gnomad SAS exome AF: 0.638

Gnomad FIN exome AF: 0.790

Gnomad NFE exome AF: 0.840

Gnomad OTH exome AF: 0.796

GnomAD4 exome AF: 0.816 AC: 1185386 AN: 1452948 Hom.: 488579 Cov.: 32 AF XY: 0.811 AC XY: 586986 AN XY: 723402

Gnomad4 AFR exome AF: 0.874

Gnomad4 AMR exome AF: 0.668

Gnomad4 ASJ exome AF: 0.863

Gnomad4 EAS exome AF: 0.499

Gnomad4 SAS exome AF: 0.648

Gnomad4 FIN exome AF: 0.791

Gnomad4 NFE exome AF: 0.845

Gnomad4 OTH exome AF: 0.808

GnomAD4 genome AF: 0.816 AC: 124197 AN: 152160 Hom.: 51260 Cov.: 33 AF XY: 0.808 AC XY: 60082 AN XY: 74374

Gnomad4 AFR AF: 0.868

Gnomad4 AMR AF: 0.728

Gnomad4 ASJ AF: 0.865

Gnomad4 EAS AF: 0.490

Gnomad4 SAS AF: 0.636

Gnomad4 FIN AF: 0.786

Gnomad4 NFE AF: 0.841

Gnomad4 OTH AF: 0.821

Alfa AF: 0.843 Hom.: 25559

Bravo AF: 0.820

Asia WGS AF: 0.573 AC: 1995 AN: 3476

EpiCase AF: 0.842

EpiControl AF: 0.845

ClinVar

Significance: Benign

Submissions summary: Benign:18

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

beta Thalassemia Benign:5

Benign, no assertion criteria provided	research	College of Science, Al Muthanna University, Al Muthanna University	Jan 01, 2018	- -
Benign, no assertion criteria provided	clinical testing	Natera, Inc.	Mar 29, 2017	- -
Benign, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Jan 13, 2018	This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -
Benign, criteria provided, single submitter	clinical testing	Genome-Nilou Lab	Jul 01, 2021	- -
Benign, no assertion criteria provided	curation	The ITHANET community portal, The Cyprus Institute of Neurology and Genetics	Nov 25, 2019	- -

not specified Benign:4

Benign, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Sep 24, 2014	- -
Benign, no assertion criteria provided	clinical testing	Genome Diagnostics Laboratory, University Medical Center Utrecht	-	- -
Benign, criteria provided, single submitter	clinical testing	PreventionGenetics, part of Exact Sciences	-	- -
Benign, no assertion criteria provided	clinical testing	Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen	-	- -

not provided Benign:4

Benign, criteria provided, single submitter	clinical testing	GeneDx	Mar 03, 2015	- -
Benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -
Benign, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	Nov 30, 2023	- -
Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Feb 01, 2024	- -

Inborn genetic diseases Benign:1

Benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Sep 02, 2016

This alteration is classified as benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

alpha Thalassemia;C0002895: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 Benign:1

Benign, criteria provided, single submitter

clinical testing

Fulgent Genetics, Fulgent Genetics

Aug 11, 2021

- -

Fetal hemoglobin quantitative trait locus 1 Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Hemoglobin E Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Hb SS disease Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.73
CADD	Benign	0.47
DANN	Benign	0.41

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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

Other links and lift over

dbSNP: rs713040; hg19: chr11-5248243; COSMIC: COSV58942515; COSMIC: COSV58942515;