19-44778053-C-G

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2 PP3_Strong

The NM_012116.4(CBLC):c.122C>G(p.Pro41Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000755 in 1,456,788 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 0.0000076 (0 hom.)
• Consequence: CBLC NM_012116.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.34

Genes affected

CBLC (HGNC:15961): (Cbl proto-oncogene C) This gene encodes a member of the Cbl family of E3 ubiquitin ligases. Cbl proteins play important roles in cell signaling through the ubiquitination and subsequent downregulation of tyrosine kinases. Expression of this gene may be restricted to epithelial cells, and alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene. [provided by RefSeq, Feb 2012]

ACMG classification

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.945

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CBLC	NM_012116.4	c.122C>G	p.Pro41Arg	missense_variant	1/11	ENST00000647358.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CBLC	ENST00000647358.2	c.122C>G	p.Pro41Arg	missense_variant	1/11		NM_012116.4	P1
CBLC	ENST00000341505.4	c.122C>G	p.Pro41Arg	missense_variant	1/10	1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome AF: 0.00000755 AC: 11 AN: 1456788 Hom.: 0 Cov.: 32 AF XY: 0.00000552 AC XY: 4 AN XY: 724942

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000990

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 31

Bravo AF: 0.00000756

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 09, 2022

The c.122C>G (p.P41R) alteration is located in exon 1 (coding exon 1) of the CBLC gene. This alteration results from a C to G substitution at nucleotide position 122, causing the proline (P) at amino acid position 41 to be replaced by an arginine (R). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.21
BayesDel_addAF	Pathogenic	0.28	D
BayesDel_noAF	Pathogenic	0.17
Cadd	Benign	23
Dann	Uncertain	1.0
DEOGEN2	Pathogenic	0.82	D;.;D
Eigen	Uncertain	0.41
Eigen_PC	Uncertain	0.26
FATHMM_MKL	Uncertain	0.81	D
M_CAP	Pathogenic	0.92	D
MetaRNN	Pathogenic	0.95	D;D;D
MetaSVM	Uncertain	0.63	D
MutationAssessor	Pathogenic	3.0	M;M;M
MutationTaster	Benign	1.0	D;D
PrimateAI	Uncertain	0.75	T
PROVEAN	Pathogenic	-7.7	D;D;.
REVEL	Pathogenic	0.71
Sift	Uncertain	0.0010	D;D;.
Sift4G	Uncertain	0.0020	D;D;.
Polyphen		1.0	D;D;D
Vest4		0.48
MutPred		0.77		Gain of MoRF binding (P = 0.0045);Gain of MoRF binding (P = 0.0045);Gain of MoRF binding (P = 0.0045);
MVP		0.93
MPC		0.87
ClinPred		1.0	D
GERP RS		3.5
Varity_R		0.90
gMVP		0.66

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs1397115734; hg19: chr19-45281310;