chr22-46695334-G-T

Variant names:

• chr22-46695334-G-T
• rs9616098
• NM_022766.6:c.944-19C>A

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_022766.6(CERK):​c.944-19C>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000793 in 1,261,646 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. There are indicators that this mutation may affect the branch point..

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 7.9e-7 (0 hom.)
• Consequence: CERK NM_022766.6 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.685
• Publications: 0 publications found

Genes affected

CERK (HGNC:19256): (ceramide kinase) CERK converts ceramide to ceramide 1-phosphate (C1P), a sphingolipid metabolite. Both CERK and C1P have been implicated in various cellular processes, including proliferation, apoptosis, phagocytosis, and inflammation (Kim et al., 2006 [PubMed 16488390]).[supplied by OMIM, Mar 2008]

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: This position, referring to a specific DNA site, is a probable branch point but is likely benign (scored 3 / 10, using the threshold of <=3). The score ranges from 0 to 10, with values ≤3 considered benign and >5 classified as pathogenic. Computational evidence support a benign effect (BayesDel_noAF=-0.89).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_022766.6. 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
	CERK	NM_022766.6	MANE Select	c.944-19C>A		intron	N/A	NP_073603.2

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CERK	ENST00000216264.13	TSL:1 MANE Select	c.944-19C>A		intron	N/A	ENSP00000216264.8
	CERK	ENST00000443629.5	TSL:1	n.*322-19C>A		intron	N/A	ENSP00000400859.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 7.93e-7 AC: 1 AN: 1261646 Hom.: 0 Cov.: 19 AF XY: 0.00000157 AC XY: 1 AN XY: 638076

⚠️ 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: 29418

American (AMR) AF: 0.00 AC: 0 AN: 44454

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 24888

East Asian (EAS) AF: 0.00 AC: 0 AN: 38786

South Asian (SAS) AF: 0.00 AC: 0 AN: 82260

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53070

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5380

European-Non Finnish (NFE) AF: 0.00000108 AC: 1 AN: 929558

Other (OTH) AF: 0.00 AC: 0 AN: 53832

⚠️ 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.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.89
CADD	Benign	0.12
DANN	Benign	0.33
PhyloP100		-0.69
BranchPoint Hunter		3.0

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: rs9616098; hg19: chr22-47091231;