rs1555742292

Variant names:

• chr19-33302295-C-A
• rs1555742292
• NM_004364.5:c.120G>T

Your query was ambiguous. Multiple possible variants found:

• chr19-33302295-C-A
• chr19-33302295-C-G
• chr19-33302295-C-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.120G>T​(p.Ala40Ala) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000762 in 1,313,036 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 Likely benign (★★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 7.6e-7 (0 hom.)
• Consequence: CEBPA NM_004364.5 synonymous
• Clinical Significance: Likely benign criteria provided, multiple submitters, no conflicts B:2
• Conservation: PhyloP100: 0.758
• 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]

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=-0.19).
• BP6: Variant 19-33302295-C-A is Benign according to our data. Variant chr19-33302295-C-A is described in ClinVar as Likely_benign. ClinVar VariationId is 456670.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BP7: Synonymous conserved (PhyloP=0.758 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

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CEBPA	NM_004364.5	MANE Select	c.120G>T	p.Ala40Ala	synonymous	Exon 1 of 1	NP_004355.2
	CEBPA	NM_001287424.2		c.225G>T	p.Ala75Ala	synonymous	Exon 1 of 1	NP_001274353.1	P49715-4
	CEBPA	NM_001287435.2		c.78G>T	p.Ala26Ala	synonymous	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.120G>T	p.Ala40Ala	synonymous	Exon 1 of 1	ENSP00000427514.1	P49715-1
	CEBPA-DT	ENST00000718467.1		n.46+496C>A		intron	N/A

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 7.62e-7 AC: 1 AN: 1313036 Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0 AN XY: 647044

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 26384

American (AMR) AF: 0.00 AC: 0 AN: 25232

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 22332

East Asian (EAS) AF: 0.00 AC: 0 AN: 28476

South Asian (SAS) AF: 0.00 AC: 0 AN: 69766

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 46290

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5304

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1035738

Other (OTH) AF: 0.0000187 AC: 1 AN: 53514

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

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	-0.19
CADD	Benign	14
DANN	Benign	0.95
PhyloP100		0.76
PromoterAI		0.013	Neutral
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.6

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: rs1555742292; hg19: chr19-33793201;