rs756510939
Variant summary
Our verdict is Likely benign. Variant got -5 ACMG points: 0P and 5B. BP4BS2
The ENST00000389048.8(ALK):āc.383A>Gā(p.Lys128Arg) variant causes a missense change. The variant allele was found at a frequency of 0.00000441 in 1,588,848 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (ā ā ). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. K128T) has been classified as Uncertain significance.
Frequency
Consequence
ENST00000389048.8 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_benign. Variant got -5 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
ALK | NM_004304.5 | c.383A>G | p.Lys128Arg | missense_variant | 1/29 | ENST00000389048.8 | NP_004295.2 | |
ALK | XR_001738688.3 | n.1310A>G | non_coding_transcript_exon_variant | 1/18 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
ALK | ENST00000389048.8 | c.383A>G | p.Lys128Arg | missense_variant | 1/29 | 1 | NM_004304.5 | ENSP00000373700 | P1 | |
ENST00000669284.1 | n.157+34972A>G | intron_variant, non_coding_transcript_variant |
Frequencies
GnomAD3 genomes AF: 0.0000394 AC: 6AN: 152186Hom.: 0 Cov.: 33
GnomAD4 exome AF: 6.96e-7 AC: 1AN: 1436662Hom.: 0 Cov.: 31 AF XY: 0.00000140 AC XY: 1AN XY: 712798
GnomAD4 genome AF: 0.0000394 AC: 6AN: 152186Hom.: 0 Cov.: 33 AF XY: 0.0000673 AC XY: 5AN XY: 74336
ClinVar
Submissions by phenotype
Neuroblastoma, susceptibility to, 3 Uncertain:2
Uncertain significance, criteria provided, single submitter | clinical testing | Labcorp Genetics (formerly Invitae), Labcorp | Dec 11, 2023 | This sequence change replaces lysine, which is basic and polar, with arginine, which is basic and polar, at codon 128 of the ALK protein (p.Lys128Arg). The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This variant has not been reported in the literature in individuals affected with ALK-related conditions. ClinVar contains an entry for this variant (Variation ID: 470852). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. 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. - |
Uncertain significance, criteria provided, single submitter | clinical testing | Baylor Genetics | Dec 02, 2023 | - - |
Hereditary cancer-predisposing syndrome Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Ambry Genetics | May 26, 2024 | The p.K128R variant (also known as c.383A>G), located in coding exon 1 of the ALK gene, results from an A to G substitution at nucleotide position 383. The lysine at codon 128 is replaced by arginine, an amino acid with highly similar properties. This amino acid position is conserved. In addition, the in silico prediction for this alteration is inconclusive. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at