19-7528920-G-T

Position:

chr19-7528920-G-T

Variant summary

Our verdict is Pathogenic. Variant got 14 ACMG points: 14P and 0B. PM2PP3_StrongPP5_Very_Strong

The NM_020533.3(MCOLN1):c.1084G>T(p.Asp362Tyr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000353 in 1,613,996 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★).

Frequency

Genomes: 𝑓 0.000039 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000035 ( 0 hom. )

Consequence

MCOLN1
NM_020533.3 missense

Scores

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:9O:1

Conservation

PhyloP100: 9.60

Variant links:

Genes affected

MCOLN1 (HGNC:13356): (mucolipin TRP cation channel 1) This gene encodes a memberof the transient receptor potential (TRP) cation channel gene family. The transmembrane protein localizes to intracellular vesicular membranes including lysosomes, and functions in the late endocytic pathway and in the regulation of lysosomal exocytosis. The channel is permeable to Ca(2+), Fe(2+), Na(+), K(+), and H(+), and is modulated by changes in Ca(2+) concentration. Mutations in this gene result in mucolipidosis type IV. [provided by RefSeq, Oct 2009]

MCOLN1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 14 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.993

PP5

Variant 19-7528920-G-T is Pathogenic according to our data. Variant chr19-7528920-G-T is described in ClinVar as [Likely_pathogenic]. Clinvar id is 5135.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr19-7528920-G-T is described in Lovd as [Likely_pathogenic]. Variant chr19-7528920-G-T is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MCOLN1	NM_020533.3 linkuse as main transcript	c.1084G>T	p.Asp362Tyr	missense_variant	9/14	ENST00000264079.11	NP_065394.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris
MCOLN1	ENST00000264079.11 linkuse as main transcript	c.1084G>T	p.Asp362Tyr	missense_variant	9/14	1	NM_020533.3	ENSP00000264079	P1
MCOLN1	ENST00000394321.9 linkuse as main transcript	n.1399G>T		non_coding_transcript_exon_variant	8/13	2
MCOLN1	ENST00000595860.5 linkuse as main transcript	n.267G>T		non_coding_transcript_exon_variant	1/4	2
MCOLN1	ENST00000599334.1 linkuse as main transcript			upstream_gene_variant		5		ENSP00000472176

Frequencies

GnomAD3 genomes

AF:

0.0000394

AC:

AN:

152150

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.0000882

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000796

AC:

AN:

251282

Hom.:

AF XY:

0.00000736

AC XY:

AN XY:

135838

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

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:

0.0000176

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000349

AC:

AN:

1461846

Hom.:

Cov.:

AF XY:

0.0000358

AC XY:

AN XY:

727228

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:

0.0000432

Gnomad4 OTH exome

AF:

0.0000497

GnomAD4 genome

AF:

0.0000394

AC:

AN:

152150

Hom.:

Cov.:

AF XY:

0.0000404

AC XY:

AN XY:

74316

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000882

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000277

Hom.:

Bravo

AF:

0.0000302

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:9Other:1

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Mucolipidosis type IV

Pathogenic:5Other:1

Pathogenic, no assertion criteria provided	literature only	OMIM	Apr 01, 2007	- -
not provided, no classification provided	literature only	GeneReviews	-	Associated with slower progression of retinal disease and relatively mild neurologic phenotype. -
Likely pathogenic, no assertion criteria provided	clinical testing	Natera, Inc.	Aug 26, 2020	- -
Likely pathogenic, criteria provided, single submitter	literature only	Counsyl	Apr 11, 2014	- -
Pathogenic, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 08, 2024	This sequence change replaces aspartic acid, which is acidic and polar, with tyrosine, which is neutral and polar, at codon 362 of the MCOLN1 protein (p.Asp362Tyr). This variant is present in population databases (rs121908372, gnomAD 0.002%). This missense change has been observed in individual(s) with mucolipidosis type IV (PMID: 11030752, 17239335; Invitae). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. ClinVar contains an entry for this variant (Variation ID: 5135). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt MCOLN1 protein function with a positive predictive value of 95%. Experimental studies have shown that this missense change affects MCOLN1 function (PMID: 14749347, 18794901, 22268962). For these reasons, this variant has been classified as Pathogenic. -
Likely pathogenic, criteria provided, single submitter	clinical testing	Baylor Genetics	-	- -

not provided

Pathogenic:3

Pathogenic, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Mar 14, 2018	- -
Pathogenic, no assertion criteria provided	clinical testing	Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+	-	- -
Likely pathogenic, no assertion criteria provided	clinical testing	Genome Diagnostics Laboratory, Amsterdam University Medical Center	-	- -

MCOLN1-related disorder

Pathogenic:1

Pathogenic, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Nov 27, 2023

The MCOLN1 c.1084G>T variant is predicted to result in the amino acid substitution p.Asp362Tyr. This variant has been reported in individuals with mucolipidosis IV (Sun et al. 2000. PubMed ID: 11030752; Dobrovolny et al. 2006. PubMed ID: 17239335) In vitro functional studies demonstrate that expression of this variant affects MCOLN1 function and results in mislocalization of the MCOLN1 protein (Dong et al. 2008. PubMed ID: 18794901; Raychowdhury et al. 2004. PubMed ID: 14749347; Marks et al. 2012. PubMed ID: 22268962). This variant is reported in 0.0018% of alleles in individuals of European (non-Finnish) descent in gnomAD. This variant is interpreted as pathogenic. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.99

BayesDel_addAF

Pathogenic

0.47

BayesDel_noAF

Pathogenic

0.46

CADD

Pathogenic

DANN

Uncertain

0.99

DEOGEN2

Pathogenic

0.88

Eigen

Pathogenic

0.91

Eigen_PC

Pathogenic

0.83

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.95

M_CAP

Uncertain

0.26

MetaRNN

Pathogenic

0.99

MetaSVM

Pathogenic

0.91

MutationAssessor

Pathogenic

3.0

MutationTaster

Benign

1.0

A;A

PrimateAI

Uncertain

0.71

PROVEAN

Pathogenic

-8.8

REVEL

Pathogenic

0.90

Sift

Pathogenic

0.0

Sift4G

Uncertain

0.0020

Polyphen

1.0

Vest4

0.98

MutPred

0.95

Gain of glycosylation at S367 (P = 0.1264);

MVP

0.94

MPC

1.4

ClinPred

1.0

GERP RS

5.9

Varity_R

0.96

gMVP

0.98

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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