19-33302308-C-T

Variant names:

Variant summary

Our verdict is Benign. The variant received -7 ACMG points: 0P and 7B. BP4_ModerateBP6BS2

The NM_004364.5(CEBPA):c.107G>A(p.Gly36Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000492 in 1,444,136 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G36V) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000051 ( 1 hom. )

Consequence

CEBPA
NM_004364.5 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:3B:1

Conservation

PhyloP100: 0.738

Publications

1 publications found

Variant links:

Genes affected

CEBPA (HGNC:1833): (CCAAT enhancer binding protein alpha) This intronless gene encodes a transcription factor that contains a basic leucine zipper (bZIP) domain and recognizes the CCAAT motif in the promoters of target genes. The encoded protein functions in homodimers and also heterodimers with CCAAT/enhancer-binding proteins beta and gamma. Activity of this protein can modulate the expression of genes involved in cell cycle regulation as well as in body weight homeostasis. Mutation of this gene is associated with acute myeloid leukemia. The use of alternative in-frame non-AUG (GUG) and AUG start codons results in protein isoforms with different lengths. Differential translation initiation is mediated by an out-of-frame, upstream open reading frame which is located between the GUG and the first AUG start codons. [provided by RefSeq, Dec 2013]

CEBPA links:

CEBPA-DT (HGNC:25710): (CEBPA divergent transcript)

CEBPA-DT links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -7 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.110432595).

BP6

Variant 19-33302308-C-T is Benign according to our data. Variant chr19-33302308-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 456669.

BS2

High AC in GnomAd4 at 5 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein
CEBPA	NM_004364.5 link	c.107G>A	p.Gly36Asp	missense_variant	Exon 1 of 1	ENST00000498907.3	NP_004355.2
CEBPA	NM_001287424.2 link	c.212G>A	p.Gly71Asp	missense_variant	Exon 1 of 1		NP_001274353.1
CEBPA	NM_001287435.2 link	c.65G>A	p.Gly22Asp	missense_variant	Exon 1 of 1		NP_001274364.1
CEBPA	NM_001285829.2 link	c.-251G>A		5_prime_UTR_variant	Exon 1 of 1		NP_001272758.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CEBPA	ENST00000498907.3 link	c.107G>A	p.Gly36Asp	missense_variant	Exon 1 of 1	6	NM_004364.5	ENSP00000427514.1
CEBPA-DT	ENST00000718467.1 link	n.46+509C>T		intron_variant	Intron 1 of 1

Frequencies

GnomAD3 genomes

AF:

0.0000330

AC:

AN:

151410

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000657

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:

0.0000590

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000133

AC:

AN:

75442

AF XY:

0.00

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000382

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000511

AC:

AN:

1292726

Hom.:

Cov.:

AF XY:

0.0000408

AC XY:

AN XY:

636738

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

25850

American (AMR)

AF:

0.0000450

AC:

AN:

22214

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

21382

East Asian (EAS)

AF:

0.00

AC:

AN:

28096

South Asian (SAS)

AF:

0.00

AC:

AN:

66274

European-Finnish (FIN)

AF:

0.00

AC:

AN:

45520

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5126

European-Non Finnish (NFE)

AF:

0.0000614

AC:

AN:

1025822

Other (OTH)

AF:

0.0000381

AC:

AN:

52442

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.497

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:

0.0000330

AC:

AN:

151410

Hom.:

Cov.:

AF XY:

0.0000271

AC XY:

AN XY:

73914

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41334

American (AMR)

AF:

0.0000657

AC:

AN:

15230

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3466

East Asian (EAS)

AF:

0.00

AC:

AN:

5080

South Asian (SAS)

AF:

0.00

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10380

Middle Eastern (MID)

AF:

0.00

AC:

AN:

314

European-Non Finnish (NFE)

AF:

0.0000590

AC:

AN:

67792

Other (OTH)

AF:

0.00

AC:

AN:

2076

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.545

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:

0.0000477

Hom.:

Bravo

AF:

0.0000189

ExAC

AF:

0.0000630

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:3Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Acute myeloid leukemia

Uncertain:2

Apr 08, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces glycine, which is neutral and non-polar, with aspartic acid, which is acidic and polar, at codon 36 of the CEBPA protein (p.Gly36Asp). This variant is present in population databases (rs746522150, gnomAD 0.007%). This variant has not been reported in the literature in individuals affected with CEBPA-related conditions. ClinVar contains an entry for this variant (Variation ID: 456669). Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Not Available"; PolyPhen-2: "Benign"; Align-GVGD: "Not Available". The aspartic acid amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Apr 14, 2023

St. Jude Molecular Pathology, St. Jude Children's Research Hospital

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The CEBPA c.107G>A (p.Gly36Asp) missense change has a maximum subpopulation frequency of 0.0073% in gnomAD v2.1.1, however this data may be unreliable due to poor data quality at this location (https://gnomad.broadinstitute.org/). The in silico tool REVEL predicts a benign effect on protein function, but to our knowledge this prediction has not been confirmed by functional studies. To our knowledge, this variant has not been reported in individuals with familial acute myeloid leukemia. In summary, the evidence currently available is insufficient to determine the clinical significance of this variant. It has therefore been classified as of uncertain significance. -

not provided

Uncertain:1

Apr 13, 2022

GeneDx

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

In silico analysis supports that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -

Inborn genetic diseases

Benign:1

Jan 10, 2025

Ambry Genetics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This alteration is classified as likely 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. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.19

BayesDel_addAF

Benign

-0.35

BayesDel_noAF

Benign

-0.63

CADD

Benign

(source)

DANN

Benign

0.96

DEOGEN2

Benign

0.27

Eigen

Benign

-0.60

Eigen_PC

Benign

-0.43

FATHMM_MKL

Uncertain

0.87

LIST_S2

Benign

0.52

M_CAP

Pathogenic

0.66

MetaRNN

Benign

0.11

MetaSVM

Benign

-1.1

MutationAssessor

Benign

-0.34

PhyloP100

0.74

PrimateAI

Pathogenic

0.91

PROVEAN

Benign

-0.77

REVEL

Benign

0.059

Sift

Benign

0.089

Sift4G

Benign

0.67

Polyphen

0.0

Vest4

0.089

MutPred

0.20

Gain of relative solvent accessibility (P = 0.0215);

MVP

0.17

ClinPred

0.069

GERP RS

2.8

PromoterAI

0.014

Neutral

(source)

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.6

Varity_R

0.12

gMVP

0.21

Mutation Taster

=76/24

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over