rs764599897
Variant summary
Our verdict is Benign. The variant received -7 ACMG points: 0P and 7B. BP4_ModerateBP6BS2
The NM_005188.4(CBL):c.1423G>A(p.Gly475Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000991 in 1,613,808 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G475V) has been classified as Uncertain significance.
Frequency
Consequence
NM_005188.4 missense
Scores
Clinical Significance
Conservation
Publications
- CBL-related disorderInheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Ambry Genetics, Orphanet, Labcorp Genetics (formerly Invitae), ClinGen, PanelApp Australia, Genomics England PanelApp
- juvenile myelomonocytic leukemiaInheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
- Noonan syndromeInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
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ACMG classification
Our verdict: Benign. The variant received -7 ACMG points.
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|
| CBL | NM_005188.4 | c.1423G>A | p.Gly475Ser | missense_variant | Exon 9 of 16 | ENST00000264033.6 | NP_005179.2 |
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
|---|---|---|---|---|---|---|---|---|---|---|
| CBL | ENST00000264033.6 | c.1423G>A | p.Gly475Ser | missense_variant | Exon 9 of 16 | 1 | NM_005188.4 | ENSP00000264033.3 |
Frequencies
GnomAD3 genomes AF: 0.0000526 AC: 8AN: 152154Hom.: 0 Cov.: 32 show subpopulations
GnomAD2 exomes AF: 0.00000797 AC: 2AN: 250944 AF XY: 0.00000737 show subpopulations
GnomAD4 exome AF: 0.00000547 AC: 8AN: 1461654Hom.: 0 Cov.: 33 AF XY: 0.00000688 AC XY: 5AN XY: 727156 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.0000526 AC: 8AN: 152154Hom.: 0 Cov.: 32 AF XY: 0.0000538 AC XY: 4AN XY: 74320 show subpopulations
Age Distribution
ClinVar
Submissions by phenotype
not specified Uncertain:1
Variant summary: CBL c.1423G>A (p.Gly475Ser) results in a non-conservative amino acid change in the encoded protein sequence. Three of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 8e-06 in 250944 control chromosomes (gnomAD). The available data on variant occurrences in the general population are insufficient to allow any conclusion about variant significance. To our knowledge, no occurrence of c.1423G>A in individuals affected with Noonan Syndrome-Like Disorder and no experimental evidence demonstrating its impact on protein function have been reported. The following publications have been ascertained in the context of this evaluation (PMID: 27069254, 25224413, 19387008, 23690417, 21828135, 19901108, 20619386, 25952305, 20951944, 19620960, 22733026, 23010802, 29296819). Two ClinVar submitters have assessed the variant since 2014: one classified the variant as likely benign, and one as uncertain significance. Based on the evidence outlined above, the variant was classified as uncertain significance. -
Juvenile myelomonocytic leukemia;C3150803:CBL-related disorder Uncertain:1
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Cardiovascular phenotype Uncertain:1
The p.G475S variant (also known as c.1423G>A), located in coding exon 9 of the CBL gene, results from a G to A substitution at nucleotide position 1423. The glycine at codon 475 is replaced by serine, an amino acid with similar properties. This variant was reported in a subject with features of Noonan syndrome, but was also seen in an unaffected parent (Martinelli S et al. Hum Mutat, 2015 Aug;36:787-96). This amino acid position is well conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Based on the available evidence, the clinical significance of this variant remains unclear. -
RASopathy Benign:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at