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NM_000518.5(HBB):c.20A>T (p.Glu7Val) AND HBB-Related Disorders

Germline classification:
Pathogenic (2 submissions)
Last evaluated:
Mar 5, 2022
Review status:
1 star out of maximum of 4 stars
criteria provided, single submitter
Somatic classification
of clinical impact:
None
Review status:
(0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided
Somatic classification
of oncogenicity:
None
Review status:
(0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided
Record status:
current
Accession:
RCV001824571.5

Allele description

NM_000518.5(HBB):c.20A>T (p.Glu7Val)

Genes:
LOC106099062:HBB recombination region [Gene]
HBB:hemoglobin subunit beta [Gene - OMIM - HGNC]
LOC107133510:origin of replication at HBB [Gene]
Variant type:
single nucleotide variant
Cytogenetic location:
11p15.4
Genomic location:
Preferred name:
NM_000518.5(HBB):c.20A>T (p.Glu7Val)
Other names:
E6V; HbS
HGVS:
  • NC_000011.10:g.5227002T>A
  • NG_000007.3:g.70614A>T
  • NG_042296.1:g.533T>A
  • NG_046672.1:g.4937T>A
  • NG_059281.1:g.5070A>T
  • NM_000518.5:c.20A>TMANE SELECT
  • NP_000509.1:p.Glu7Val
  • NP_000509.1:p.Glu7Val
  • LRG_1232t1:c.20A>T
  • LRG_1232:g.5070A>T
  • LRG_1232p1:p.Glu7Val
  • NC_000011.9:g.5248232T>A
  • NM_000518.4:c.20A>T
  • P68871:p.Glu7Val
Protein change:
E7V; Glu6Val
Links:
Genetic Testing Registry (GTR): GTR000115629; Genetic Testing Registry (GTR): GTR000500319; UniProtKB: P68871#VAR_002863; OMIM: 141900.0039; OMIM: 141900.0040; OMIM: 141900.0243; OMIM: 141900.0244; OMIM: 141900.0245; OMIM: 141900.0246; OMIM: 141900.0247; OMIM: 141900.0521; OMIM: 141900.0523; dbSNP: rs334
NCBI 1000 Genomes Browser:
rs334
Molecular consequence:
  • NM_000518.5:c.20A>T - missense variant - [Sequence Ontology: SO:0001583]
Observations:
2

Condition(s)

Name:
HBB-Related Disorders
Identifiers:
MedGen: CN239378

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Assertion and evidence details

Help
Submission AccessionSubmitterReview Status
(Assertion method)		Clinical Significance
(Last evaluated)		OriginMethodCitations
SCV002075077GenomeConnect, ClinGen
no classification provided
not providedunknownphenotyping only

SCV002107097DASA
criteria provided, single submitter

(ACMG Guidelines, 2015)		Pathogenic
(Mar 5, 2022) 		germlineclinical testing

PubMed (23)
[See all records that cite these PMIDs]

Help

Summary from all submissions

EthnicityOriginAffectedIndividualsFamiliesChromosomes testedNumber TestedFamily historyMethod
not providedgermlineyes2not providednot providednot providednot providedclinical testing
not providedunknownunknown3not providednot provided3not providedphenotyping only

Citations

PubMed

Gene mutations in human haemoglobin: the chemical difference between normal and sickle cell haemoglobin.

INGRAM VM.

Nature. 1957 Aug 17;180(4581):326-8. No abstract available.

PubMed [citation]
PMID:
13464827

Primary role for adherent leukocytes in sickle cell vascular occlusion: a new paradigm.

Turhan A, Weiss LA, Mohandas N, Coller BS, Frenette PS.

Proc Natl Acad Sci U S A. 2002 Mar 5;99(5):3047-51.

PubMed [citation]
PMID:
11880644
PMCID:
PMC122470
See all PubMed Citations (23)

Details of each submission

From GenomeConnect, ClinGen, SCV002075077.1

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not provided1not providednot providedphenotyping onlynot provided
2not provided1not providednot providedphenotyping onlynot provided
3not provided1not providednot providedphenotyping onlynot provided

Description

Variant identified in multiple registry participants. Variant interpreted as consistent with alpha thalassemia trait and reported on 02-28-2020 by Lab or GTR ID 500068. Variant interpreted as Pathogenic and reported on 07-21-2020 by Lab or GTR ID 1197. Variant interpreted as Pathogenic and reported on 05-26-2021 by Lab or GTR ID 20290. GenomeConnect assertions are reported exactly as they appear on the patient-provided report from the testing laboratory. GenomeConnect staff make no attempt to reinterpret the clinical significance of the variant.

#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1unknownunknown1not providednot provided1not providednot providednot provided
2unknownunknown1not providednot provided1not providednot providednot provided
3unknownunknown1not providednot provided1not providednot providednot provided

From DASA, SCV002107097.2

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not provided2not providednot providedclinical testing PubMed (23)

Description

Well-established in vitro or in vivo functional studies supportive of a damaging effect on the gene or gene product (PMID: 13464827; 11880644; 11830454; 12124399; 28356267; 1802884) - PS3.The c.20A>T;p.(Glu7Val) missense variant has been observed in affected individual(s) and ClinVar contains an entry for this variant (ClinVar ID: 15333; PMID: 20301551; PMID: 30002798; PMID: 15658184;PMID: 7384810; PMID: 6268660; PMID: 26372199; PMID: 26275168; PMID: 28356267; PMID: 22625666; PMID: 32527859) - PS4. The p.(Glu7Val) was detected in trans with a pathogenic variant (PMID: 15658184; PMID: 20861612; PMID: 21131035) - PM3_very strong. Pathogenic missense variant in this residue have been reported (ClinVar ID: 15126 PMID: 20301551; 27117572; 26372199) - PM5. The variant co-segregated with disease in multiple affected family members (PMID: 21302591; 34334128; 14084634; 26041415) - PP1_strong.and allele frequency is greater than expected for disorder - BS1. In summary, the currently available evidence indicates that the variant is pathogenic.

#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineyesnot providednot providednot provided2not providednot providednot provided

Last Updated: Aug 26, 2023