Genetic Variant NM_005194.4:c.757G>A (chr20-50191790-G-A) – ACMG Classification: Benign (-8 pts)

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BP4_StrongBS2

The NM_005194.4(CEBPB):c.757G>A(p.Ala253Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000329 in 1,550,488 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00024 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000011 ( 0 hom. )

Consequence

CEBPB
NM_005194.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.649

Variant links:

Genes affected

CEBPB (HGNC:1834): (CCAAT enhancer binding protein beta) This intronless gene encodes a transcription factor that contains a basic leucine zipper (bZIP) domain. The encoded protein functions as a homodimer but can also form heterodimers with CCAAT/enhancer-binding proteins alpha, delta, and gamma. Activity of this protein is important in the regulation of genes involved in immune and inflammatory responses, among other processes. The use of alternative in-frame AUG start codons results in multiple protein isoforms, each with distinct biological functions. [provided by RefSeq, Oct 2013]

CEBPB links:

CEBPB-AS1 (HGNC:51226): (CEBPB antisense RNA 1)

CEBPB-AS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -8 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.006512016).

BS2

High AC in GnomAd4 at 36 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CEBPB	NM_005194.4 link	c.757G>A	p.Ala253Thr	missense_variant	Exon 1 of 1	ENST00000303004.5	NP_005185.2	P17676-1
CEBPB	NM_001285878.1 link	c.688G>A	p.Ala230Thr	missense_variant	Exon 1 of 1		NP_001272807.1	P17676-2
CEBPB	NM_001285879.1 link	c.163G>A	p.Ala55Thr	missense_variant	Exon 1 of 1		NP_001272808.1	P17676-3
CEBPB-AS1	NR_125739.1 link	n.280C>T		non_coding_transcript_exon_variant	Exon 1 of 7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CEBPB	ENST00000303004.5 link	c.757G>A	p.Ala253Thr	missense_variant	Exon 1 of 1	6	NM_005194.4	ENSP00000305422.3		P17676-1

Frequencies

GnomAD3 genomes

AF:

0.000237

AC:

AN:

152062

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00216

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:

0.000956

GnomAD3 exomes

AF:

0.0000260

AC:

AN:

153972

Hom.:

AF XY:

0.0000482

AC XY:

AN XY:

83014

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000829

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000467

GnomAD4 exome

AF:

0.0000107

AC:

AN:

1398314

Hom.:

Cov.:

AF XY:

0.0000101

AC XY:

AN XY:

690876

show subpopulations

Gnomad4 AFR exome

AF:

0.0000325

Gnomad4 AMR exome

AF:

0.000196

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

9.25e-7

Gnomad4 OTH exome

AF:

0.000103

GnomAD4 genome

AF:

0.000237

AC:

AN:

152174

Hom.:

Cov.:

AF XY:

0.000242

AC XY:

AN XY:

74412

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00216

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:

0.000946

Bravo

AF:

0.000400

ExAC

AF:

0.00000860

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Nov 29, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.757G>A (p.A253T) alteration is located in exon 1 (coding exon 1) of the CEBPB gene. This alteration results from a G to A substitution at nucleotide position 757, causing the alanine (A) at amino acid position 253 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

0.080

BayesDel_addAF

Benign

-0.43

BayesDel_noAF

Benign

-0.67

CADD

Benign

DANN

Benign

0.97

DEOGEN2

Benign

0.18

Eigen

Benign

-0.65

Eigen_PC

Benign

-0.52

FATHMM_MKL

Benign

0.27

LIST_S2

Benign

0.58

M_CAP

Uncertain

0.27

MetaRNN

Benign

0.0065

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.90

PrimateAI

Pathogenic

0.86

PROVEAN

Benign

-0.32

REVEL

Benign

0.044

Sift

Benign

0.67

Sift4G

Benign

0.67

Polyphen

0.018

Vest4

0.046

MutPred

0.12

Gain of glycosylation at A253 (P = 0.0013);

MVP

0.17

MPC

1.3

ClinPred

0.038

GERP RS

2.9

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.065

gMVP

0.53

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