rs138668699

Variant summary

Our verdict is Benign. The variant received -19 ACMG points: 0P and 19B. BP4_ModerateBP6_Very_StrongBP7BS1BS2

The NM_004304.5(ALK):​c.2676C>T​(p.Ala892Ala) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00117 in 1,601,550 control chromosomes in the GnomAD database, including 9 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Synonymous variant affecting the same amino acid position (i.e. A892A) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0016 ( 0 hom., cov: 30)
Exomes 𝑓: 0.0011 ( 9 hom. )

Consequence

ALK
NM_004304.5 synonymous

Scores

2

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:7

Conservation

PhyloP100: 0.0200

Publications

3 publications found
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]
ALK Gene-Disease associations (from GenCC):
  • neuroblastoma, susceptibility to, 3
    Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: G2P, ClinGen, Labcorp Genetics (formerly Invitae), Ambry Genetics

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -19 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.39).
BP6
Variant 2-29229023-G-A is Benign according to our data. Variant chr2-29229023-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 239811.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BP7
Synonymous conserved (PhyloP=0.02 with no splicing effect.
BS1
Variant frequency is greater than expected in population eas. GnomAd4 allele frequency = 0.00159 (227/142578) while in subpopulation EAS AF = 0.0044 (21/4774). AF 95% confidence interval is 0.00295. There are 0 homozygotes in GnomAd4. There are 137 alleles in the male GnomAd4 subpopulation. Median coverage is 30. This position passed quality control check.
BS2
High AC in GnomAd4 at 227 AD gene.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
ALKNM_004304.5 linkc.2676C>T p.Ala892Ala synonymous_variant Exon 16 of 29 ENST00000389048.8 NP_004295.2 Q9UM73B6D4Y2
ALKXR_001738688.3 linkn.3603C>T non_coding_transcript_exon_variant Exon 16 of 18

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
ALKENST00000389048.8 linkc.2676C>T p.Ala892Ala synonymous_variant Exon 16 of 29 1 NM_004304.5 ENSP00000373700.3 Q9UM73
ALKENST00000618119.4 linkc.1545C>T p.Ala515Ala synonymous_variant Exon 15 of 28 5 ENSP00000482733.1 A0A087WZL3

Frequencies

GnomAD3 genomes
AF:
0.00159
AC:
227
AN:
142506
Hom.:
0
Cov.:
30
show subpopulations
Gnomad AFR
AF:
0.000316
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.000310
Gnomad ASJ
AF:
0.00725
Gnomad EAS
AF:
0.00439
Gnomad SAS
AF:
0.000221
Gnomad FIN
AF:
0.0139
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.000553
Gnomad OTH
AF:
0.00254
GnomAD2 exomes
AF:
0.00220
AC:
554
AN:
251330
AF XY:
0.00198
show subpopulations
Gnomad AFR exome
AF:
0.000246
Gnomad AMR exome
AF:
0.000289
Gnomad ASJ exome
AF:
0.00923
Gnomad EAS exome
AF:
0.00256
Gnomad FIN exome
AF:
0.0134
Gnomad NFE exome
AF:
0.000801
Gnomad OTH exome
AF:
0.00196
GnomAD4 exome
AF:
0.00112
AC:
1639
AN:
1458972
Hom.:
9
Cov.:
34
AF XY:
0.00108
AC XY:
784
AN XY:
725720
show subpopulations
African (AFR)
AF:
0.000239
AC:
8
AN:
33410
American (AMR)
AF:
0.000269
AC:
12
AN:
44618
Ashkenazi Jewish (ASJ)
AF:
0.00794
AC:
207
AN:
26056
East Asian (EAS)
AF:
0.00578
AC:
229
AN:
39586
South Asian (SAS)
AF:
0.000383
AC:
33
AN:
86228
European-Finnish (FIN)
AF:
0.0123
AC:
652
AN:
53178
Middle Eastern (MID)
AF:
0.000522
AC:
3
AN:
5750
European-Non Finnish (NFE)
AF:
0.000361
AC:
401
AN:
1109962
Other (OTH)
AF:
0.00156
AC:
94
AN:
60184
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.474
Heterozygous variant carriers
0
98
196
293
391
489
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
20
40
60
80
100
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
AF:
0.00159
AC:
227
AN:
142578
Hom.:
0
Cov.:
30
AF XY:
0.00200
AC XY:
137
AN XY:
68502
show subpopulations
African (AFR)
AF:
0.000315
AC:
12
AN:
38104
American (AMR)
AF:
0.000310
AC:
4
AN:
12914
Ashkenazi Jewish (ASJ)
AF:
0.00725
AC:
25
AN:
3446
East Asian (EAS)
AF:
0.00440
AC:
21
AN:
4774
South Asian (SAS)
AF:
0.000222
AC:
1
AN:
4510
European-Finnish (FIN)
AF:
0.0139
AC:
122
AN:
8760
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
256
European-Non Finnish (NFE)
AF:
0.000553
AC:
37
AN:
66920
Other (OTH)
AF:
0.00252
AC:
5
AN:
1986
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.498
Heterozygous variant carriers
0
11
23
34
46
57
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
4
8
12
16
20
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
Alfa
AF:
0.00114
Hom.:
0
Bravo
AF:
0.000593
Asia WGS
AF:
0.00404
AC:
14
AN:
3478
EpiCase
AF:
0.000218
EpiControl
AF:
0.000237

ClinVar

Significance: Benign/Likely benign
Submissions summary: Benign:7
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not provided Benign:3
Mar 01, 2025
CeGaT Center for Human Genetics Tuebingen
Significance:Likely benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

ALK: BP4, BP7 -

Feb 24, 2020
GeneDx
Significance:Likely benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

-
Breakthrough Genomics, Breakthrough Genomics
Significance:Likely benign
Review Status:criteria provided, single submitter
Collection Method:not provided

- -

Neuroblastoma, susceptibility to, 3 Benign:2
Feb 02, 2025
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Jan 12, 2018
Illumina Laboratory Services, Illumina
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

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. -

ALK-related disorder Benign:1
Jun 25, 2019
PreventionGenetics, part of Exact Sciences
Significance:Benign
Review Status:no assertion criteria provided
Collection Method:clinical testing

This variant is classified as benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Hereditary cancer-predisposing syndrome Benign:1
Jan 06, 2017
Ambry Genetics
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

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: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.39
CADD
Benign
8.9
DANN
Benign
0.70
PhyloP100
0.020
Mutation Taster
=99/1
polymorphism

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.11
Details are displayed if max score is > 0.2

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

Publications

Other links and lift over

dbSNP: rs138668699; hg19: chr2-29451889; API