19-33302352-G-C

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 2P and 3B. PM2BP4_ModerateBP6

The NM_004364.5(CEBPA):c.63C>G(p.Ser21Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000373 in 1,340,604 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another nucleotide change resulting in the same amino acid substitution has been previously reported as Uncertain significance in ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. S21I) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000034 ( 0 hom. )

Consequence

CEBPA
NM_004364.5 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: -0.605

Publications

4 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: Likely_benign. The variant received -1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.22207639).

BP6

Variant 19-33302352-G-C is Benign according to our data. Variant chr19-33302352-G-C is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 2179945.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein
CEBPA	NM_004364.5 link	c.63C>G	p.Ser21Arg	missense_variant	Exon 1 of 1	ENST00000498907.3	NP_004355.2
CEBPA	NM_001287424.2 link	c.168C>G	p.Ser56Arg	missense_variant	Exon 1 of 1		NP_001274353.1
CEBPA	NM_001287435.2 link	c.21C>G	p.Ser7Arg	missense_variant	Exon 1 of 1		NP_001274364.1
CEBPA	NM_001285829.2 link	c.-295C>G		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.63C>G	p.Ser21Arg	missense_variant	Exon 1 of 1	6	NM_004364.5	ENSP00000427514.1
CEBPA-DT	ENST00000718467.1 link	n.46+553G>C		intron_variant	Intron 1 of 1

Frequencies

GnomAD3 genomes

AF:

0.00000660

AC:

AN:

151464

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000336

AC:

AN:

1189140

Hom.:

Cov.:

AF XY:

0.00000692

AC XY:

AN XY:

578036

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

23444

American (AMR)

AF:

0.00

AC:

AN:

9114

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

15456

East Asian (EAS)

AF:

0.00

AC:

AN:

27172

South Asian (SAS)

AF:

0.00

AC:

AN:

43024

European-Finnish (FIN)

AF:

0.00

AC:

AN:

39828

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4408

European-Non Finnish (NFE)

AF:

0.00000409

AC:

AN:

978862

Other (OTH)

AF:

0.00

AC:

AN:

47832

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.425

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:

0.00000660

AC:

AN:

151464

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

73974

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41344

American (AMR)

AF:

0.00

AC:

AN:

15228

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3466

East Asian (EAS)

AF:

0.00

AC:

AN:

5098

South Asian (SAS)

AF:

0.00

AC:

AN:

4824

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10362

Middle Eastern (MID)

AF:

0.00

AC:

AN:

314

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

67834

Other (OTH)

AF:

0.00

AC:

AN:

2084

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

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:

0.00

Hom.:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Acute myeloid leukemia

Uncertain:1

Jun 11, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

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. Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated. This variant has not been reported in the literature in individuals affected with CEBPA-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces serine, which is neutral and polar, with arginine, which is basic and polar, at codon 21 of the CEBPA protein (p.Ser21Arg).

Inborn genetic diseases

Benign:1

Mar 03, 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

Pathogenic

0.80

BayesDel_addAF

Benign

-0.13

BayesDel_noAF

Benign

-0.43

CADD

Benign

9.7

(source)

DANN

Uncertain

0.98

DEOGEN2

Benign

0.28

Eigen

Benign

-0.52

Eigen_PC

Benign

-0.55

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Benign

0.54

M_CAP

Pathogenic

0.66

MetaRNN

Benign

0.22

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.4

PhyloP100

-0.60

PrimateAI

Pathogenic

0.93

PROVEAN

Benign

-0.89

REVEL

Benign

0.16

Sift

Uncertain

0.0040

Sift4G

Benign

0.39

Vest4

0.17

ClinPred

0.25

GERP RS

-1.2

PromoterAI

0.0016

Neutral

(source)

Varity_R

0.16

gMVP

0.38

Mutation Taster

=78/22

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