chr2-29193211-TGTGCGACCGAGCTCAG-T
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Variant summary
Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM4BS2
The NM_004304.5(ALK):c.4860_*12del variant causes a stop lost, 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000753 in 1,460,746 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★).
Frequency
Genomes: not found (cov: 32)
Exomes 𝑓: 0.0000075 ( 0 hom. )
Consequence
ALK
NM_004304.5 stop_lost, 3_prime_UTR
NM_004304.5 stop_lost, 3_prime_UTR
Scores
Not classified
Clinical Significance
Conservation
PhyloP100: 1.22
Genes affected
ALK (HGNC:427): (ALK receptor tyrosine kinase) This gene encodes a receptor tyrosine kinase, which belongs to the insulin receptor superfamily. This protein comprises an extracellular domain, an hydrophobic stretch corresponding to a single pass transmembrane region, and an intracellular kinase domain. It plays an important role in the development of the brain and exerts its effects on specific neurons in the nervous system. This gene has been found to be rearranged, mutated, or amplified in a series of tumours including anaplastic large cell lymphomas, neuroblastoma, and non-small cell lung cancer. The chromosomal rearrangements are the most common genetic alterations in this gene, which result in creation of multiple fusion genes in tumourigenesis, including ALK (chromosome 2)/EML4 (chromosome 2), ALK/RANBP2 (chromosome 2), ALK/ATIC (chromosome 2), ALK/TFG (chromosome 3), ALK/NPM1 (chromosome 5), ALK/SQSTM1 (chromosome 5), ALK/KIF5B (chromosome 10), ALK/CLTC (chromosome 17), ALK/TPM4 (chromosome 19), and ALK/MSN (chromosome X).[provided by RefSeq, Jan 2011]
CLIP4 (HGNC:26108): (CAP-Gly domain containing linker protein family member 4) Predicted to enable microtubule plus-end binding activity. Predicted to be involved in cytoplasmic microtubule organization. Located in intracellular membrane-bounded organelle. [provided by Alliance of Genome Resources, Apr 2022]
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ACMG classification
Classification made for transcript
Verdict is Likely_benign. Variant got -2 ACMG points.
PM4
Stoplost variant in NM_004304.5
BS2
High AC in GnomAdExome4 at 11 AD gene.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
ALK | NM_004304.5 | c.4860_*12del | stop_lost, 3_prime_UTR_variant | 29/29 | ENST00000389048.8 | NP_004295.2 | ||
ALK | NM_001353765.2 | c.1656_*12del | stop_lost, 3_prime_UTR_variant | 10/10 | NP_001340694.1 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
ALK | ENST00000389048.8 | c.4860_*12del | stop_lost, 3_prime_UTR_variant | 29/29 | 1 | NM_004304.5 | ENSP00000373700 | P1 |
Frequencies
GnomAD3 genomes Cov.: 32
GnomAD3 genomes
Cov.:
32
GnomAD4 exome AF: 0.00000753 AC: 11AN: 1460746Hom.: 0 AF XY: 0.00000550 AC XY: 4AN XY: 726694
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GnomAD4 genome Cov.: 32
GnomAD4 genome
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32
Bravo
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ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:2
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
Neuroblastoma, susceptibility to, 3 Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Labcorp Genetics (formerly Invitae), Labcorp | Nov 01, 2022 | This sequence change disrupts the translational stop signal of the ALK mRNA. It is expected to extend the length of the ALK protein by 8 additional amino acid residues. 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. Experimental studies and prediction algorithms are not available or were not evaluated, and the functional significance of this variant is currently unknown. ClinVar contains an entry for this variant (Variation ID: 947158). This variant has not been reported in the literature in individuals affected with ALK-related conditions. This variant is not present in population databases (gnomAD no frequency). - |
not provided Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | GeneDx | Apr 28, 2023 | Not observed at significant frequency in large population cohorts (gnomAD); Normal stop codon changed to a leucine codon, leading to the addition of 8 amino acids at the C-terminus; Has not been previously published as pathogenic or benign to our knowledge - |
Computational scores
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Find out detailed SpliceAI scores and Pangolin per-transcript scores at