rs538054260
Variant summary
Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP4_StrongBP6BS2
The NM_005188.4(CBL):c.1528C>G(p.Pro510Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000353 in 1,614,158 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 17/22 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. P510R) 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 -9 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
CBL | NM_005188.4 | c.1528C>G | p.Pro510Ala | missense_variant | Exon 10 of 16 | ENST00000264033.6 | NP_005179.2 |
Ensembl
Frequencies
GnomAD3 genomes AF: 0.0000526 AC: 8AN: 152158Hom.: 0 Cov.: 32 show subpopulations
GnomAD2 exomes AF: 0.0000636 AC: 16AN: 251478 AF XY: 0.0000589 show subpopulations
GnomAD4 exome AF: 0.0000335 AC: 49AN: 1461882Hom.: 0 Cov.: 33 AF XY: 0.0000289 AC XY: 21AN XY: 727242 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.0000525 AC: 8AN: 152276Hom.: 0 Cov.: 32 AF XY: 0.0000403 AC XY: 3AN XY: 74468 show subpopulations
Age Distribution
ClinVar
Submissions by phenotype
not specified Uncertain:1Benign:1
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Variant summary: CBL c.1528C>G (p.Pro510Ala) 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 6.4e-05 in 251478 control chromosomes. The observed variant frequency is approximately 25 fold of the estimated maximal expected allele frequency for a pathogenic variant in CBL causing Noonan Syndrome And Related Conditions phenotype (2.5e-06). c.1528C>G has been reported in the literature in a CBL mutation-associated syndrome affected individual who inherited the variant from an unaffected parent, further evidence the variant is benign (Martinelli_2015). These report(s) do not provide unequivocal conclusions about association of the variant with Noonan Syndrome And Related Conditions. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. The following publications have been ascertained in the context of this evaluation (PMID: 26580448, 25952305, 31970404, 27784745). ClinVar contains an entry for this variant (Variation ID: 302781). Based on the evidence outlined above, the variant was classified as likely benign. -
CBL-related disorder Benign:2
This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -
This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -
not provided Benign:1
CBL: BP4 -
RASopathy Benign:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at