Genetic Variant CBFA2T3:p.Ala451Thr (chr16-88881342-C-T) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_005187.6(CBFA2T3):c.1351G>A(p.Ala451Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000074 in 1,582,006 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 34)

Exomes 𝑓: 0.000080 ( 0 hom. )

Consequence

CBFA2T3
NM_005187.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -1.45

Variant links:

Genes affected

CBFA2T3 (HGNC:1537): (CBFA2/RUNX1 partner transcriptional co-repressor 3) This gene encodes a member of the myeloid translocation gene family which interact with DNA-bound transcription factors and recruit a range of corepressors to facilitate transcriptional repression. The t(16;21)(q24;q22) translocation is one of the less common karyotypic abnormalities in acute myeloid leukemia. The translocation produces a chimeric gene made up of the 5'-region of the runt-related transcription factor 1 gene fused to the 3'-region of this gene. This gene is also a putative breast tumor suppressor. Alternative splicing results in transcript variants. [provided by RefSeq, Nov 2010]

CBFA2T3 links:

ENSG00000259881 (HGNC:):

ENSG00000259881 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.04169321).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CBFA2T3	NM_005187.6 link	c.1351G>A	p.Ala451Thr	missense_variant	Exon 9 of 12	ENST00000268679.9	NP_005178.4	O75081-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CBFA2T3	ENST00000268679.9 link	c.1351G>A	p.Ala451Thr	missense_variant	Exon 9 of 12	1	NM_005187.6	ENSP00000268679.4		O75081-1

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152182

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000355

AC:

AN:

197334

Hom.:

AF XY:

0.0000553

AC XY:

AN XY:

108590

show subpopulations

Gnomad AFR exome

AF:

0.0000878

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000736

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000470

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000804

AC:

115

AN:

1429824

Hom.:

Cov.:

AF XY:

0.0000889

AC XY:

AN XY:

708842

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000598

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000100

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152182

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74352

show subpopulations

Gnomad4 AFR

AF:

0.0000483

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000285

Hom.:

Bravo

AF:

0.0000227

ESP6500AA

AF:

0.000240

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000342

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

May 16, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1351G>A (p.A451T) alteration is located in exon 9 (coding exon 9) of the CBFA2T3 gene. This alteration results from a G to A substitution at nucleotide position 1351, causing the alanine (A) at amino acid position 451 to be replaced by a threonine (T). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.069

BayesDel_addAF

Benign

-0.38

BayesDel_noAF

Benign

-0.59

CADD

Benign

0.49

DANN

Benign

0.74

DEOGEN2

Benign

0.087

.;T;T

Eigen

Benign

-1.3

Eigen_PC

Benign

-1.4

FATHMM_MKL

Benign

0.067

LIST_S2

Benign

0.57

T;T;T

M_CAP

Benign

0.014

MetaRNN

Benign

0.042

T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.5

.;L;.

PrimateAI

Benign

0.35

PROVEAN

Benign

-0.43

N;N;N

REVEL

Benign

0.027

Sift

Benign

0.73

T;T;T

Sift4G

Benign

0.61

T;T;.

Polyphen

0.0010

B;B;.

Vest4

0.12

MVP

0.088

MPC

0.062

ClinPred

0.018

GERP RS

-1.2

Varity_R

0.029

gMVP

0.22

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over