19-33301893-C-A

Variant names:

• chr19-33301893-C-A
• rs1272249243
• NM_004364.5:c.522G>T

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 2P and 11B. PM2 BP4_Moderate BP6_Very_Strong BP7

The NM_004364.5(CEBPA):​c.522G>T​(p.Ala174Ala) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Synonymous variant affecting the same amino acid position (i.e. A174A) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: CEBPA NM_004364.5 synonymous
• Clinical Significance: Likely benign criteria provided, multiple submitters, no conflicts B:2
• Conservation: PhyloP100: -0.370
• Publications: 0 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]

ENSG00000267727 (HGNC:):

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

ACMG classification

Our verdict: Benign. The variant received -9 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.42).
• BP6: Variant 19-33301893-C-A is Benign according to our data. Variant chr19-33301893-C-A is described in ClinVar as Likely_benign. ClinVar VariationId is 748725.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BP7: Synonymous conserved (PhyloP=-0.37 with no splicing effect.

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

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CEBPA	NM_004364.5	MANE Select	c.522G>T	p.Ala174Ala	synonymous	Exon 1 of 1	NP_004355.2
	CEBPA	NM_001287424.2		c.627G>T	p.Ala209Ala	synonymous	Exon 1 of 1	NP_001274353.1
	CEBPA	NM_001287435.2		c.480G>T	p.Ala160Ala	synonymous	Exon 1 of 1	NP_001274364.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CEBPA	ENST00000498907.3	TSL:6 MANE Select	c.522G>T	p.Ala174Ala	synonymous	Exon 1 of 1	ENSP00000427514.1
	ENSG00000267727	ENST00000587312.1	TSL:3	n.435C>A		non_coding_transcript_exon	Exon 2 of 2
	CEBPA-DT	ENST00000718467.1		n.46+94C>A		intron	N/A

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1172768 Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0 AN XY: 574674

African (AFR) AF: 0.00 AC: 0 AN: 23374

American (AMR) AF: 0.00 AC: 0 AN: 17440

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 17822

East Asian (EAS) AF: 0.00 AC: 0 AN: 23872

South Asian (SAS) AF: 0.00 AC: 0 AN: 50618

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 28738

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 3170

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 962020

Other (OTH) AF: 0.00 AC: 0 AN: 45714

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000756

ClinVar

ClinVar submissions as Germline

Significance: Likely benign

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	-	1	Acute myeloid leukemia (1)
-	-	1	Inborn genetic diseases (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.42
CADD	Benign	15
DANN	Benign	0.89
PhyloP100		-0.37

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: rs1272249243; hg19: chr19-33792799;