rs1555894626
Positions:
Variant summary
Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2BP4_ModerateBP6_ModerateBP7
The NM_005198.5(CHKB):c.594G>A(p.Gln198=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,736 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: 6.8e-7 ( 0 hom. )
Consequence
CHKB
NM_005198.5 synonymous
NM_005198.5 synonymous
Scores
2
Clinical Significance
Conservation
PhyloP100: 2.32
Genes affected
CHKB (HGNC:1938): (choline kinase beta) Choline kinase (CK) and ethanolamine kinase (EK) catalyze the phosphorylation of choline/ethanolamine to phosphocholine/phosphoethanolamine. This is the first enzyme in the biosynthesis of phosphatidylcholine/phosphatidylethanolamine in all animal cells. The highly purified CKs from mammalian sources and their recombinant gene products have been shown to have EK activity also, indicating that both activities reside on the same protein. The choline kinase-like protein encoded by CHKL belongs to the choline/ethanolamine kinase family; however, its exact function is not known. Read-through transcripts are expressed from this locus that include exons from the downstream CPT1B locus. [provided by RefSeq, Jun 2009]
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ACMG classification
Classification made for transcript
Verdict is Likely_benign. Variant got -3 ACMG points.
PM2
?
Very rare variant in population databases, with high coverage;
BP4
?
Computational evidence support a benign effect (BayesDel_noAF=-0.36).
BP6
?
Variant 22-50580648-C-T is Benign according to our data. Variant chr22-50580648-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 468476.Status of the report is criteria_provided_single_submitter, 1 stars.
BP7
?
Synonymous conserved (PhyloP=2.32 with no splicing effect.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
CHKB | NM_005198.5 | c.594G>A | p.Gln198= | synonymous_variant | 5/11 | ENST00000406938.3 | |
CHKB-CPT1B | NR_027928.2 | n.812G>A | non_coding_transcript_exon_variant | 5/30 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
CHKB | ENST00000406938.3 | c.594G>A | p.Gln198= | synonymous_variant | 5/11 | 1 | NM_005198.5 | P1 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD3 genomes
?
Cov.:
32
GnomAD4 exome AF: 6.84e-7 AC: 1AN: 1461736Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0AN XY: 727162
GnomAD4 exome
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1
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1461736
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32
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0
AN XY:
727162
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GnomAD4 genome ? Cov.: 32
GnomAD4 genome
?
Cov.:
32
ClinVar
Significance: Likely benign
Submissions summary: Benign:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
Megaconial type congenital muscular dystrophy Benign:1
Likely benign, criteria provided, single submitter | clinical testing | Invitae | Feb 03, 2022 | - - |
Computational scores
Source:
Name
Calibrated prediction
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Prediction
BayesDel_noAF
Benign
CADD
Benign
DANN
Benign
Splicing
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SpliceAI score (max)
Details are displayed if max score is > 0.2
DS_AG_spliceai
Position offset: -7
Find out detailed SpliceAI scores and Pangolin per-transcript scores at