Genetic Variant LAMTOR3:p.Ala21Gly (chr4-99887337-G-C) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

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

The NM_021970.4(LAMTOR3):c.62C>G(p.Ala21Gly) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000847 in 1,535,682 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000087 ( 0 hom. )

Consequence

LAMTOR3
NM_021970.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 8.99

Variant links:

Genes affected

LAMTOR3 (HGNC:15606): (late endosomal/lysosomal adaptor, MAPK and MTOR activator 3) This gene encodes a scaffold protein that functions in the extracellular signal-regulated kinase (ERK) cascade. The protein is localized to late endosomes by the mitogen-activated protein-binding protein-interacting protein, and binds specifically to MAP kinase kinase MAP2K1/MEK1, MAP kinase MAPK3/ERK1, and MAP kinase MAPK1/ERK2. Studies of the orthologous gene in mouse indicate that it regulates late endosomal traffic and cell proliferation. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene. A pseudogene of this gene is located on the long arm of chromosome 13. [provided by RefSeq, Aug 2011]

LAMTOR3 links:

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 rank	MANE	Protein	UniProt
LAMTOR3	NM_021970.4 link	c.62C>G	p.Ala21Gly	missense_variant	Exon 4 of 7	ENST00000499666.7	NP_068805.1	Q9UHA4-1
LAMTOR3	NM_001243736.1 link	c.62C>G	p.Ala21Gly	missense_variant	Exon 4 of 7		NP_001230665.1	Q9UHA4-2
LAMTOR3	NR_024170.1 link	n.265C>G		non_coding_transcript_exon_variant	Exon 3 of 6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
LAMTOR3	ENST00000499666.7 link	c.62C>G	p.Ala21Gly	missense_variant	Exon 4 of 7	1	NM_021970.4	ENSP00000424183.1	Q9UHA4-1
LAMTOR3	ENST00000515100.1 link	n.147C>G		non_coding_transcript_exon_variant	Exon 3 of 6	1
LAMTOR3	ENST00000226522.8 link	c.62C>G	p.Ala21Gly	missense_variant	Exon 4 of 7	3		ENSP00000226522.8	Q9UHA4-2

Frequencies

GnomAD3 genomes

AF:

0.00000659

AC:

AN:

151850

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000656

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000503

AC:

AN:

218890

Hom.:

AF XY:

0.0000586

AC XY:

AN XY:

119476

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000394

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000867

AC:

AN:

1383832

Hom.:

Cov.:

AF XY:

0.0000116

AC XY:

AN XY:

688068

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000309

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:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000659

AC:

AN:

151850

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74176

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000656

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000712

Hom.:

Bravo

AF:

0.0000302

ExAC

AF:

0.0000412

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Feb 16, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.62C>G (p.A21G) alteration is located in exon 4 (coding exon 3) of the LAMTOR3 gene. This alteration results from a C to G substitution at nucleotide position 62, causing the alanine (A) at amino acid position 21 to be replaced by a glycine (G). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.37

BayesDel_addAF

Benign

-0.021

BayesDel_noAF

Uncertain

0.040

CADD

Uncertain

DANN

Uncertain

0.98

DEOGEN2

Benign

0.034

T;.

Eigen

Benign

0.029

Eigen_PC

Benign

0.22

FATHMM_MKL

Pathogenic

1.0

LIST_S2

Uncertain

0.96

D;D

M_CAP

Benign

0.0078

MetaRNN

Uncertain

0.47

T;T

MetaSVM

Benign

-0.91

MutationAssessor

Benign

1.2

L;L

PrimateAI

Pathogenic

0.86

PROVEAN

Benign

-0.91

N;N

REVEL

Uncertain

0.40

Sift

Benign

0.31

T;T

Sift4G

Benign

0.41

T;T

Polyphen

0.084

B;.

Vest4

0.81

MutPred

0.63

Loss of sheet (P = 0.0817);Loss of sheet (P = 0.0817);

MVP

0.38

MPC

0.20

ClinPred

0.20

GERP RS

4.7

Varity_R

0.42

gMVP

0.80

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over