rs200508558
Variant summary
Our verdict is Likely benign. The variant received -6 ACMG points: 0P and 6B. BP4_ModerateBS2
The NM_005188.4(CBL):c.1324C>A(p.Leu442Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000285 in 1,613,870 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 Uncertain significance (★★). Synonymous variant affecting the same amino acid position (i.e. L442L) has been classified as Likely benign.
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: Likely_benign. The variant received -6 ACMG points.
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|
| CBL | NM_005188.4 | c.1324C>A | p.Leu442Met | missense_variant | Exon 9 of 16 | ENST00000264033.6 | NP_005179.2 |
Ensembl
Frequencies
GnomAD3 genomes AF: 0.00000658 AC: 1AN: 152054Hom.: 0 Cov.: 32 show subpopulations
GnomAD2 exomes AF: 0.0000159 AC: 4AN: 251424 AF XY: 0.00000736 show subpopulations
GnomAD4 exome AF: 0.0000308 AC: 45AN: 1461816Hom.: 0 Cov.: 33 AF XY: 0.0000220 AC XY: 16AN XY: 727222 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.00000658 AC: 1AN: 152054Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1AN XY: 74282 show subpopulations
ClinVar
Submissions by phenotype
Juvenile myelomonocytic leukemia;C3150803:CBL-related disorder Uncertain:1
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RASopathy Uncertain:1
This sequence change replaces leucine, which is neutral and non-polar, with methionine, which is neutral and non-polar, at codon 442 of the CBL protein (p.Leu442Met). This variant is present in population databases (rs200508558, gnomAD 0.006%). This missense change has been observed in individual(s) with clinical features of CBL-related conditions (Invitae). ClinVar contains an entry for this variant (Variation ID: 477696). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt CBL protein function with a negative predictive value of 95%. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at