rs141710973
Variant summary
Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2
The NM_005188.4(CBL):c.2542G>A(p.Ala848Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000681 in 1,614,132 control chromosomes in the GnomAD database, including 1 homozygotes. 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 Likely benign (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A848S) 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 -20 ACMG points.
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|
| CBL | NM_005188.4 | c.2542G>A | p.Ala848Thr | missense_variant | Exon 16 of 16 | ENST00000264033.6 | NP_005179.2 |
Ensembl
Frequencies
GnomAD3 genomes AF: 0.000335 AC: 51AN: 152126Hom.: 1 Cov.: 32 show subpopulations
GnomAD2 exomes AF: 0.000151 AC: 38AN: 251470 AF XY: 0.000118 show subpopulations
GnomAD4 exome AF: 0.0000404 AC: 59AN: 1461888Hom.: 0 Cov.: 31 AF XY: 0.0000330 AC XY: 24AN XY: 727242 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.000335 AC: 51AN: 152244Hom.: 1 Cov.: 32 AF XY: 0.000336 AC XY: 25AN XY: 74436 show subpopulations
Age Distribution
ClinVar
Submissions by phenotype
not specified Benign:4
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This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -
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Variant summary: CBL c.2542G>A (p.Ala848Thr) results in a non-conservative amino acid change in the encoded protein sequence. Four of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 0.00015 in 251470 control chromosomes. The observed variant frequency is approximately 60 fold of the estimated maximal expected allele frequency for a pathogenic variant in CBL causing Noonan Syndrome and Related Conditions phenotype (2.5e-06), strongly suggesting that the variant is benign. c.2542G>A has been reported in the literature in a study examining the prevalence of germline mutations in pediatric cancer where it was classified with a panel decision of probably benign (Zhang_2015). This report does 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. One clinical diagnostic laboratory has submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation and classified the variant as likely benign. Based on the evidence outlined above, the variant was classified as likely benign. -
not provided Benign:3
CBL: BP4, BS1 -
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RASopathy Benign:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at