rs1555742295

Variant names:

• chr19-33302295-C-CG
• rs1555742295
• NM_004364.5:c.119dupC

Variant summary

Our verdict is Pathogenic. The variant received 12 ACMG points: 12P and 0B. PVS1 PM2 PP5_Moderate

The NM_004364.5(CEBPA):​c.119dupC​(p.Gln41AlafsTer67) variant causes a frameshift change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Pathogenic (★). Synonymous variant affecting the same amino acid position (i.e. A40A) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: CEBPA NM_004364.5 frameshift
• Clinical Significance: Pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 4.88
• Publications: 1 publications found

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

ACMG classification

Our verdict: Pathogenic. The variant received 12 ACMG points.

• PVS1: Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most exon, not predicted to undergo nonsense mediated mRNA decay. There are 58 pathogenic variants in the truncated region.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 19-33302295-C-CG is Pathogenic according to our data. Variant chr19-33302295-C-CG is described in ClinVar as Pathogenic. ClinVar VariationId is 434686.Status of the report is criteria_provided_single_submitter, 1 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004364.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CEBPA	NM_004364.5	MANE Select	c.119dupC	p.Gln41AlafsTer67	frameshift	Exon 1 of 1	NP_004355.2
	CEBPA	NM_001287424.2		c.224dupC	p.Gln76AlafsTer67	frameshift	Exon 1 of 1	NP_001274353.1	P49715-4
	CEBPA	NM_001287435.2		c.77dupC	p.Gln27AlafsTer67	frameshift	Exon 1 of 1	NP_001274364.1	P49715-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CEBPA	ENST00000498907.3	TSL:6 MANE Select	c.119dupC	p.Gln41AlafsTer67	frameshift	Exon 1 of 1	ENSP00000427514.1	P49715-1
	CEBPA-DT	ENST00000718467.1		n.46+497dupG		intron	N/A

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

Significance: Pathogenic

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
1	-	-	Acute myeloid leukemia (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		4.9
Mutation Taster		=2/198	disease causing (ClinVar)

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

Other links and lift over

dbSNP: rs1555742295; hg19: chr19-33793201;