2-29193706-T-C
Variant summary
Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBA1
The NM_004304.5(ALK):c.4381A>G(p.Ile1461Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.998 in 1,611,610 control chromosomes in the GnomAD database, including 803,064 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★). Another nucleotide change resulting in the same amino acid substitution has been previously reported as Likely benign in ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. I1461L) has been classified as Uncertain significance.
Frequency
Consequence
NM_004304.5 missense
Scores
Clinical Significance
Conservation
Publications
Genome browser will be placed here
ACMG classification
Our verdict: Benign. The variant received -20 ACMG points.
Transcripts
RefSeq
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
|---|---|---|---|---|---|---|---|---|---|---|
| ALK | ENST00000389048.8 | c.4381A>G | p.Ile1461Val | missense_variant | Exon 29 of 29 | 1 | NM_004304.5 | ENSP00000373700.3 |
Frequencies
GnomAD3 genomes AF: 0.991 AC: 150841AN: 152166Hom.: 74774 Cov.: 32 show subpopulations
GnomAD2 exomes AF: 0.998 AC: 249995AN: 250608 AF XY: 0.998 show subpopulations
GnomAD4 exome AF: 0.999 AC: 1457866AN: 1459326Hom.: 728231 Cov.: 75 AF XY: 0.999 AC XY: 724917AN XY: 725568 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.991 AC: 150959AN: 152284Hom.: 74833 Cov.: 32 AF XY: 0.992 AC XY: 73842AN XY: 74450 show subpopulations
Age Distribution
ClinVar
Submissions by phenotype
Neuroblastoma, susceptibility to, 3 Benign:9
This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease.
not specified Benign:5Other:1
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.
not provided Benign:2
Variant summary: The c.4381A>G variant affects a non-conserved nucleotide, resulting in amino acid change from Ile to Val. 4/4 in-silico tools predict benign outcome for this variant (SNPs&GO not captured due to low reliability index). This variant is found in 120930/121274 control chromosomes (60296 homozygotes) at a frequency of 0.9971634, which is about 2393192 times of the maximal expected frequency of a pathogenic allele (0.0000004), suggesting the variant to be the ancestral allele; therefore it is classified as Benign.
Squamous cell lung carcinoma Pathogenic:1
Hereditary cancer-predisposing syndrome Benign:1
This alteration is classified as benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity.
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at