rs756986057

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The ENST00000389048.8(ALK):​c.3067G>T​(p.Val1023Leu) variant causes a missense, splice region change. The variant allele was found at a frequency of 0.00000205 in 1,461,824 control chromosomes in the GnomAD database, with no homozygous occurrence. 2/3 splice prediction tools predicting alterations to normal splicing. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another nucleotide change resulting in same amino acid change has been previously reported as Uncertain significancein ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V1023G) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)
Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

ALK
ENST00000389048.8 missense, splice_region

Scores

1
2
16
Splicing: ADA: 0.9999
2

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 4.42
Variant links:
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]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2
Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
ALKNM_004304.5 linkuse as main transcriptc.3067G>T p.Val1023Leu missense_variant, splice_region_variant 18/29 ENST00000389048.8 NP_004295.2

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
ALKENST00000389048.8 linkuse as main transcriptc.3067G>T p.Val1023Leu missense_variant, splice_region_variant 18/291 NM_004304.5 ENSP00000373700 P1
ALKENST00000618119.4 linkuse as main transcriptc.1936G>T p.Val646Leu missense_variant, splice_region_variant 17/285 ENSP00000482733
ALKENST00000431873.6 linkuse as main transcriptc.235G>T p.Val79Leu missense_variant, splice_region_variant, NMD_transcript_variant 2/145 ENSP00000414027

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD4 exome
AF:
0.00000205
AC:
3
AN:
1461824
Hom.:
0
Cov.:
32
AF XY:
0.00000413
AC XY:
3
AN XY:
727222
show subpopulations
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:
0.00000270
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.10
BayesDel_addAF
Benign
-0.048
T
BayesDel_noAF
Benign
-0.31
CADD
Uncertain
24
DANN
Benign
0.89
DEOGEN2
Benign
0.11
T;.
Eigen
Benign
-0.27
Eigen_PC
Benign
-0.085
FATHMM_MKL
Pathogenic
0.98
D
LIST_S2
Benign
0.78
T;T
M_CAP
Benign
0.065
D
MetaRNN
Uncertain
0.46
T;T
MetaSVM
Benign
-0.80
T
MutationAssessor
Benign
0.81
L;.
MutationTaster
Benign
1.0
D;D
PrimateAI
Uncertain
0.54
T
PROVEAN
Benign
-0.93
N;.
REVEL
Benign
0.26
Sift
Benign
0.45
T;.
Sift4G
Benign
0.70
T;T
Polyphen
0.0060
B;.
Vest4
0.58
MutPred
0.40
Gain of sheet (P = 0.0266);.;
MVP
0.60
MPC
0.18
ClinPred
0.34
T
GERP RS
5.3
Varity_R
0.15
gMVP
0.64

Splicing

Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Pathogenic
1.0
dbscSNV1_RF
Pathogenic
0.97
SpliceAI score (max)
0.41
Details are displayed if max score is > 0.2
DS_DL_spliceai
0.41
Position offset: 0

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr2-29449788; API