Genetic Variant ALK:p.Gly1121Ala (chr2-29222605-C-G) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_004304.5(ALK):c.3362G>C(p.Gly1121Ala) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. 1/1 splice prediction tools predict no significant impact on normal splicing. 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. G1121D) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Consequence

ALK
NM_004304.5 missense, splice_region

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 2.73

Publications

0 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

ALK links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004304.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ALK	NM_004304.5	MANE Select	c.3362G>C	p.Gly1121Ala	missense splice_region	Exon 21 of 29	NP_004295.2
	ALK	NM_001353765.2		c.158G>C	p.Gly53Ala	missense splice_region	Exon 2 of 10	NP_001340694.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
ALK	ENST00000389048.8	TSL:1 MANE Select	c.3362G>C	p.Gly1121Ala	missense splice_region	Exon 21 of 29	ENSP00000373700.3
ALK	ENST00000638605.1	TSL:1	n.239G>C		splice_region non_coding_transcript_exon	Exon 3 of 11
ALK	ENST00000618119.4	TSL:5	c.2231G>C	p.Gly744Ala	missense splice_region	Exon 20 of 28	ENSP00000482733.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

Cov.:

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.34

BayesDel_addAF

Pathogenic

0.19

BayesDel_noAF

Uncertain

0.030

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.022

Eigen

Benign

-0.18

Eigen_PC

Benign

0.043

FATHMM_MKL

Uncertain

0.91

LIST_S2

Uncertain

0.87

M_CAP

Uncertain

0.11

MetaRNN

Uncertain

0.50

MetaSVM

Benign

-0.42

MutationAssessor

Benign

-0.23

PhyloP100

2.7

PrimateAI

Pathogenic

0.82

PROVEAN

Uncertain

-2.8

REVEL

Uncertain

0.51

Sift

Benign

1.0

Sift4G

Benign

1.0

Polyphen

0.073

Vest4

0.40

MutPred

0.40

Loss of catalytic residue at L1122 (P = 0.1238)

MVP

0.94

MPC

0.66

ClinPred

0.93

GERP RS

5.2

Varity_R

0.44

gMVP

0.53

Mutation Taster

=46/54

disease causing

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over