rs746949269
Positions:
Variant summary
Our verdict is Likely pathogenic. Variant got 8 ACMG points: 8P and 0B. PM1PM2PM5PP3_Moderate
The NM_000533.5(PLP1):c.677C>G(p.Ser226Cys) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. S226P) has been classified as Likely pathogenic.
Frequency
Genomes: not found (cov: 23)
Consequence
PLP1
NM_000533.5 missense
NM_000533.5 missense
Scores
5
6
3
Clinical Significance
Conservation
PhyloP100: 3.80
Genes affected
PLP1 (HGNC:9086): (proteolipid protein 1) This gene encodes a transmembrane proteolipid protein that is the predominant component of myelin. The encoded protein may play a role in the compaction, stabilization, and maintenance of myelin sheaths, as well as in oligodendrocyte development and axonal survival. Mutations in this gene cause Pelizaeus-Merzbacher disease and spastic paraplegia type 2. Alternatively splicing results in multiple transcript variants, including the DM20 splice variant. [provided by RefSeq, Feb 2015]
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ACMG classification
Classification made for transcript
Verdict is Likely_pathogenic. Variant got 8 ACMG points.
PM1
?
In a hotspot region, there are 7 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 10 uncertain in NM_000533.5
PM2
?
Very rare variant in population databases, with high coverage;
PM5
?
Other missense variant is known to change same aminoacid residue: Variant chrX-103788490-T-C is described in ClinVar as [Likely_pathogenic]. Clinvar id is 3255448.Status of the report is criteria_provided_single_submitter, 1 stars.
PP3
?
MetaRNN computational evidence supports a deleterious effect, 0.888
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
PLP1 | NM_000533.5 | c.677C>G | p.Ser226Cys | missense_variant | 5/7 | ENST00000621218.5 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
PLP1 | ENST00000621218.5 | c.677C>G | p.Ser226Cys | missense_variant | 5/7 | 1 | NM_000533.5 | P1 |
Frequencies
GnomAD3 genomes ? Cov.: 23
GnomAD3 genomes
?
Cov.:
23
GnomAD4 exome Cov.: 28
GnomAD4 exome
Cov.:
28
GnomAD4 genome ? Cov.: 23
GnomAD4 genome
?
Cov.:
23
ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
Pelizaeus-Merzbacher disease;C1839264:Hereditary spastic paraplegia 2 Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Baylor Genetics | Sep 01, 2017 | Likely pathogenicity based on finding it once in our laboratory de novo in a 1-year-old male with global delays, slight hirsutism, muscle rigidity, increased startle reflex - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
BayesDel_addAF
Uncertain
D
BayesDel_noAF
Benign
CADD
Pathogenic
DANN
Uncertain
DEOGEN2
Pathogenic
D;D;.
FATHMM_MKL
Uncertain
D
LIST_S2
Uncertain
D;.;D
M_CAP
Pathogenic
D
MetaRNN
Pathogenic
D;D;D
MetaSVM
Pathogenic
D
MutationAssessor
Benign
L;L;.
MutationTaster
Benign
D;D;D
PrimateAI
Uncertain
T
Sift4G
Uncertain
D;D;D
Polyphen
D;D;P
Vest4
MutPred
Gain of ubiquitination at K229 (P = 0.1181);Gain of ubiquitination at K229 (P = 0.1181);.;
MVP
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