rs764669598
Positions:
Variant summary
Our verdict is Pathogenic. Variant got 14 ACMG points: 14P and 0B. PM2PP3_StrongPP5_Very_Strong
The NM_015166.4(MLC1):c.824C>A(p.Ala275Asp) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,461,598 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: not found (cov: 32)
Exomes 𝑓: 0.0000021 ( 0 hom. )
Consequence
MLC1
NM_015166.4 missense
NM_015166.4 missense
Scores
7
10
2
Clinical Significance
Conservation
PhyloP100: 8.66
Genes affected
MLC1 (HGNC:17082): (modulator of VRAC current 1) The function of this gene product is unknown; however, homology to other proteins suggests that it may be an integral membrane transporter. Mutations in this gene have been associated with megalencephalic leukoencephalopathy with subcortical cysts, an autosomal recessive neurological disorder. Alternatively spliced transcript variants encoding different isoforms have been identified. [provided by RefSeq, Jul 2008]
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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, 0.981
PP5
Variant 22-50068503-G-T is Pathogenic according to our data. Variant chr22-50068503-G-T is described in ClinVar as [Likely_pathogenic]. Clinvar id is 554164.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
MLC1 | NM_015166.4 | c.824C>A | p.Ala275Asp | missense_variant | 10/12 | ENST00000311597.10 | NP_055981.1 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
MLC1 | ENST00000311597.10 | c.824C>A | p.Ala275Asp | missense_variant | 10/12 | 1 | NM_015166.4 | ENSP00000310375.6 | ||
MLC1 | ENST00000395876.6 | c.824C>A | p.Ala275Asp | missense_variant | 10/12 | 1 | ENSP00000379216.2 | |||
MLC1 | ENST00000483836.1 | n.181C>A | non_coding_transcript_exon_variant | 3/5 | 2 |
Frequencies
GnomAD3 genomes Cov.: 32
GnomAD3 genomes
Cov.:
32
GnomAD3 exomes AF: 0.00000398 AC: 1AN: 251486Hom.: 0 AF XY: 0.00 AC XY: 0AN XY: 135918
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GnomAD4 exome AF: 0.00000205 AC: 3AN: 1461598Hom.: 0 Cov.: 35 AF XY: 0.00000138 AC XY: 1AN XY: 727116
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GnomAD4 genome Cov.: 32
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32
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Asia WGS
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1
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3478
ClinVar
Significance: Pathogenic/Likely pathogenic
Submissions summary: Pathogenic:3Other:1
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
Megalencephalic leukoencephalopathy with subcortical cysts 1 Pathogenic:2Other:1
not provided, no classification provided | literature only | GeneReviews | - | - - |
Likely pathogenic, criteria provided, single submitter | clinical testing | Counsyl | Sep 27, 2017 | - - |
Pathogenic, criteria provided, single submitter | clinical testing | Baylor Genetics | Feb 20, 2024 | - - |
not provided Pathogenic:1
Pathogenic, criteria provided, single submitter | clinical testing | Labcorp Genetics (formerly Invitae), Labcorp | Jan 07, 2023 | For these reasons, this variant has been classified as Pathogenic. 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 not expected to disrupt MLC1 protein function. ClinVar contains an entry for this variant (Variation ID: 554164). This missense change has been observed in individual(s) with megalencephalic leukoencephalopathy with subcortical cysts (PMID: 25796299, 27081509, 28840990). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. It has also been observed to segregate with disease in related individuals. This variant is present in population databases (rs764669598, gnomAD 0.006%). This sequence change replaces alanine, which is neutral and non-polar, with aspartic acid, which is acidic and polar, at codon 275 of the MLC1 protein (p.Ala275Asp). - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Pathogenic
CADD
Pathogenic
DANN
Uncertain
DEOGEN2
Uncertain
T;T
Eigen
Uncertain
Eigen_PC
Benign
FATHMM_MKL
Uncertain
D
LIST_S2
Uncertain
.;D
M_CAP
Pathogenic
D
MetaRNN
Pathogenic
D;D
MetaSVM
Uncertain
D
MutationAssessor
Uncertain
M;M
PrimateAI
Uncertain
T
PROVEAN
Pathogenic
D;D
REVEL
Pathogenic
Sift
Uncertain
D;D
Sift4G
Uncertain
D;D
Polyphen
D;D
Vest4
MutPred
Gain of loop (P = 0.0079);Gain of loop (P = 0.0079);
MVP
MPC
1.1
ClinPred
D
GERP RS
Varity_R
gMVP
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at