2-29920191-G-C

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_004304.5(ALK):ā€‹c.469C>Gā€‹(p.Pro157Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P157S) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 33)
Exomes š‘“: 0.000027 ( 0 hom. )
Failed GnomAD Quality Control

Consequence

ALK
NM_004304.5 missense

Scores

1
18

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: 2.37
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]

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.054904193).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
ALKNM_004304.5 linkuse as main transcriptc.469C>G p.Pro157Ala missense_variant 1/29 ENST00000389048.8 NP_004295.2 Q9UM73B6D4Y2
ALKXR_001738688.3 linkuse as main transcriptn.1396C>G non_coding_transcript_exon_variant 1/18

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
ALKENST00000389048.8 linkuse as main transcriptc.469C>G p.Pro157Ala missense_variant 1/291 NM_004304.5 ENSP00000373700.3 Q9UM73
ENSG00000288553ENST00000669284.1 linkuse as main transcriptn.157+35058C>G intron_variant

Frequencies

GnomAD3 genomes
Cov.:
33
GnomAD3 exomes
AF:
0.000168
AC:
41
AN:
244624
Hom.:
0
AF XY:
0.000105
AC XY:
14
AN XY:
133736
show subpopulations
Gnomad AFR exome
AF:
0.000753
Gnomad AMR exome
AF:
0.0000291
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.0000554
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.000238
Gnomad NFE exome
AF:
0.000200
Gnomad OTH exome
AF:
0.000168
GnomAD4 exome
Data not reliable, filtered out with message: AS_VQSR
AF:
0.0000267
AC:
39
AN:
1460546
Hom.:
0
Cov.:
31
AF XY:
0.0000261
AC XY:
19
AN XY:
726592
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:
0.000630
Gnomad4 NFE exome
AF:
0.00000180
Gnomad4 OTH exome
AF:
0.0000663
GnomAD4 genome
Cov.:
33
ExAC
AF:
0.000140
AC:
17

ClinVar

Significance: Likely benign
Submissions summary: Benign:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Hereditary cancer-predisposing syndrome Benign:1
Likely benign, criteria provided, single submitterclinical testingAmbry GeneticsAug 21, 2024This alteration is classified as likely 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: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.062
BayesDel_addAF
Benign
-0.39
T
BayesDel_noAF
Benign
-0.37
CADD
Benign
9.2
DANN
Benign
0.89
DEOGEN2
Benign
0.11
T
Eigen
Benign
-0.82
Eigen_PC
Benign
-0.74
FATHMM_MKL
Benign
0.35
N
LIST_S2
Benign
0.64
T
M_CAP
Uncertain
0.092
D
MetaRNN
Benign
0.055
T
MetaSVM
Benign
-0.94
T
MutationAssessor
Benign
0.69
N
PrimateAI
Benign
0.37
T
PROVEAN
Benign
-0.70
N
REVEL
Benign
0.030
Sift
Benign
0.047
D
Sift4G
Benign
0.080
T
Polyphen
0.0
B
Vest4
0.15
MVP
0.56
MPC
0.16
ClinPred
0.015
T
GERP RS
-0.74
Varity_R
0.027
gMVP
0.075

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

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs74774946; hg19: chr2-30143057; API