Genetic Variant CEBPA:p.Gly242Cys (chr19-33301691-C-A) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2BP4

The NM_004364.5(CEBPA):c.724G>T(p.Gly242Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000983 in 1,017,754 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G242R) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 9.8e-7 ( 0 hom. )

Consequence

CEBPA
NM_004364.5 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.617

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:

ENSG00000267727 (HGNC:):

ENSG00000267727 links:

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

CEBPA-DT links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.3972453).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CEBPA	NM_004364.5 link	c.724G>T	p.Gly242Cys	missense_variant	Exon 1 of 1	ENST00000498907.3	NP_004355.2	P49715-1
CEBPA	NM_001287424.2 link	c.829G>T	p.Gly277Cys	missense_variant	Exon 1 of 1		NP_001274353.1	P49715-4
CEBPA	NM_001287435.2 link	c.682G>T	p.Gly228Cys	missense_variant	Exon 1 of 1		NP_001274364.1	P49715-2
CEBPA	NM_001285829.2 link	c.367G>T	p.Gly123Cys	missense_variant	Exon 1 of 1		NP_001272758.1	P49715-3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
CEBPA	ENST00000498907.3 link	c.724G>T	p.Gly242Cys	missense_variant	Exon 1 of 1	6	NM_004364.5	ENSP00000427514.1	P49715-1
ENSG00000267727	ENST00000587312.1 link	n.356+57C>A		intron_variant	Intron 1 of 1	3
CEBPA-DT	ENST00000718467.1 link	n.-63C>A		upstream_gene_variant

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

9.83e-7

AC:

AN:

1017754

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

482458

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

20374

American (AMR)

AF:

0.00

AC:

AN:

6042

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

10910

East Asian (EAS)

AF:

0.00

AC:

AN:

18584

South Asian (SAS)

AF:

0.00

AC:

AN:

19294

European-Finnish (FIN)

AF:

0.00

AC:

AN:

17638

Middle Eastern (MID)

AF:

0.00

AC:

AN:

3536

European-Non Finnish (NFE)

AF:

0.00000113

AC:

AN:

882688

Other (OTH)

AF:

0.00

AC:

AN:

38688

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.725

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.16

BayesDel_addAF

Benign

-0.18

BayesDel_noAF

Benign

-0.50

CADD

Benign

(source)

DANN

Benign

0.97

DEOGEN2

Benign

0.28

Eigen

Benign

-0.16

Eigen_PC

Benign

-0.31

FATHMM_MKL

Benign

0.089

LIST_S2

Benign

0.34

M_CAP

Pathogenic

0.80

MetaRNN

Benign

0.40

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.4

PhyloP100

-0.62

PrimateAI

Pathogenic

0.93

PROVEAN

Benign

-1.3

REVEL

Benign

0.12

Sift

Benign

0.13

Sift4G

Benign

0.21

Polyphen

0.99

Vest4

0.30

MutPred

0.31

Gain of catalytic residue at G242 (P = 0.059);

MVP

0.53

ClinPred

0.35

GERP RS

3.2

Varity_R

0.16

gMVP

0.48

Mutation Taster

=98/2

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

ClinVar

Computational scores

Splicing

Publications

Other links and lift over