chr11-5225609-T-A

Variant names:

• chr11-5225609-T-A
• rs33964352
• NM_000518.5:c.433A>T
• HBB p.Lys145*

GermlineCancer (beta)

Variant summary

Our verdict is Uncertain significance.

+4 Uncertain · Hot

-7

-6

-1

0

+5

+6

+9

+10

BenignB

Likely BenignLB

UncertainVUS

Likely PathogenicLP

PathogenicP

The variant received 4 classification points (ACGS-UK Somatic Oncogenicity v2025). O3_ModerateO9_Moderate

The NM_000518.5(HBB):c.433A>T (p.Lys145*) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. This is a loss-of-function variant that does not trigger NMD. The gene HBB is a known oncogene (CancerMine: 4 oncogene, 1 driver citations). The gene HBB is a cancer driver gene (CancerMine: 4 oncogene, 1 driver citations). The variant is absent from the gnomAD population database at sites with sufficient sequencing coverage. In-silico predictor (BayesDel (noAF)) classifies this variant as likely damaging/oncogenic. Splicing prediction tools (SpliceAI) predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain Significance (★). The variant has been observed in cBioPortal in 1 sample across 1 study and 1 cancer type; somatic enrichment level: NONE (Observed in at most one deduplicated cBioPortal case.).

• Frequency: Genomes: not found (cov: 33)
• Consequence: HBB NM_000518.5 stop_gained
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.23
• Publications: 2 publications found

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: ClinGen, Orphanet, Labcorp Genetics (formerly Invitae), PanelApp Australia, Natera
• erythrocytosis, familial, 6

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: ClinGen, PanelApp Australia, Genomics England PanelApp, Labcorp Genetics (formerly Invitae)
• hemoglobin M disease

  Inheritance: AD Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: Orphanet, ClinGen, PanelApp Australia, 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 and related diseases

  Inheritance: AR Classification: DEFINITIVE Submitted by: Natera
• beta-thalassemia HBB/LCRB

  Inheritance: AR, SD Classification: DEFINITIVE, STRONG Submitted by: ClinGen, Labcorp Genetics (formerly Invitae), PanelApp Australia, Ambry Genetics
• sickle cell disease

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), PanelApp Australia, Natera
• 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
• 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

ENSG00000298932 (HGNC:):

Classification according to ACGS-UK Somatic Oncogenicity v2025

Classification was made for transcript:

Our verdict: Uncertain_significance. The variant received 4 points.

Apply	Criterion Code & Title / Strength	Strength	Rationale / Clinical Context
	O3Absent or very rare in population		Absent or extremely rare in gnomAD (AC ≤ 2) — O3 moderate; GnomAD: AF = absent, AC = 0 — absent/extremely rare (O3 moderate [+2])
	O9Protein length change in non-repeat region		Truncating variant in final exon of oncogene — predicted GOF (O9 moderate); Truncating variant in final exon of oncogene — predicted to escape NMD and result in GOF

Variant Effect in Transcripts

Automated classification analysis was done for transcript: NM_000518.5. 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.433A>T p.Lys145*	stop_gained	Exon 3 of 3	Prot: NP_000509.1 UniProt:

HBB NM_000518.5

MANE Select

HGVSc / HGVSpc.433A>Tp.Lys145*

Exon rankExon 3 of 3

stop_gained

Prot: NP_000509.1UniProt: P68871D9YZU5

Ensembl Transcripts

Sel.	Gene / Transcript	Tags	HGVSc / HGVSp	Effect	Exon rank	Protein / UniProt
	HBB ENST00000335295.4	TSL:1MANE Select	c.433A>T p.Lys145*	stop_gained	Exon 3 of 3	Prot: ENSP00000333994.3 UniProt:
	HBB ENST00000647020.1		c.433A>T p.Lys145*	stop_gained	Exon 3 of 3	Prot: ENSP00000494175.1 UniProt:
	HBB ENST00000883533.1		c.433A>T p.Lys145*	stop_gained	Exon 4 of 4	Prot: ENSP00000553592.1 UniProt:

HBB ENST00000335295.4

TSL:1MANE Select

HGVSc / HGVSpc.433A>Tp.Lys145*

Exon rankExon 3 of 3

stop_gained

Prot: ENSP00000333994.3UniProt: P68871

HBB ENST00000647020.1

HGVSc / HGVSpc.433A>Tp.Lys145*

Exon rankExon 3 of 3

stop_gained

Prot: ENSP00000494175.1UniProt: P68871

HBB ENST00000883533.1

HGVSc / HGVSpc.433A>Tp.Lys145*

Exon rankExon 4 of 4

stop_gained

Prot: ENSP00000553592.1UniProt: P68871

Frequencies

Allele frequencies (AF), counts (AC/AN), homozygotes and coverage

Common (AF > 0.05 / Hom > 5)

Rare (AF ≤ 0.0001 / Hom ≤ 1)

Source / population	AF	AC	Hom	AN	Coverage
Global population databases 3 sources Large-scale international reference populations
GnomAD3 genomes	AF:	AC:	Hom:	AN:	Cov:33
GnomAD4 exome	AF:	AC:	Hom:	AN:	Cov:31
GnomAD4 genome	AF:	AC:	Hom:	AN:	Cov:33

Showing 3 sources

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not provided (1)

Computational Scores

Algorithm	Calibrated pred.	Score	Prediction
AlphaGenome AVI	Pathogenic	35
BayesDel_addAF	Pathogenic	0.54	D
BayesDel_noAF	Pathogenic	0.54
CADD	Pathogenic	40
DANN	Uncertain	0.99
Eigen	Uncertain	0.52
Eigen_PC	Uncertain	0.35
FATHMM_MKL	Uncertain	0.89	D
GPN-Star LLR	N/A	-9.2
GPN-Star score	N/A	9.2
Mutation Taster	N/A	13/187	disease causing
PhyloP100	Benign	1.2

Showing 12 of 12 scores

Splicing Scores

Algorithm	Calibrated pred.	Score	Prediction
Pangolin (max)	Benign	0.020
SpliceAI score (max)	Benign	0.0	Details are displayed if max score is > 0.2

Showing 2 of 2 scores

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.

MaveDB functional evidence

MaveDB is a public repository of laboratory assays that test the effect of thousands of variants at once — treat this as supporting research data and interpret it with great caution; it is not a clinical classification.

No MaveDB functional evidence found for this variant.

Other links and lift over

dbSNP: rs33964352;

hg19: chr11-5246839;

ACMG debug oncogenicity

ACGS debug oncogenicity

ACMG debug germline

Submit to ClinVar