chr1-161305872-A-C
Variant summary
Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate
The NM_000530.8(MPZ):c.*4T>G variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).
Frequency
Genomes: not found (cov: 31)
Exomes 𝑓: 0.0 ( 0 hom. )
Failed GnomAD Quality Control
Consequence
MPZ
NM_000530.8 3_prime_UTR
NM_000530.8 3_prime_UTR
Scores
2
Clinical Significance
Conservation
PhyloP100: 2.81
Genes affected
MPZ (HGNC:7225): (myelin protein zero) This gene is specifically expressed in Schwann cells of the peripheral nervous system and encodes a type I transmembrane glycoprotein that is a major structural protein of the peripheral myelin sheath. The encoded protein contains a large hydrophobic extracellular domain and a smaller basic intracellular domain, which are essential for the formation and stabilization of the multilamellar structure of the compact myelin. Mutations in this gene are associated with autosomal dominant form of Charcot-Marie-Tooth disease type 1 (CMT1B) and other polyneuropathies, such as Dejerine-Sottas syndrome (DSS) and congenital hypomyelinating neuropathy (CHN). A recent study showed that two isoforms are produced from the same mRNA by use of alternative in-frame translation termination codons via a stop codon readthrough mechanism. [provided by RefSeq, Oct 2015]
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ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 0 ACMG points.
PM2
?
Very rare variant in population databases, with high coverage;
BP4
?
Computational evidence support a benign effect (BayesDel_noAF=-0.46).
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
MPZ | NM_000530.8 | c.*4T>G | 3_prime_UTR_variant | 6/6 | ENST00000533357.5 | ||
MPZ | NM_001315491.2 | c.751T>G | p.Leu251Val | missense_variant | 6/6 | ||
MPZ | XM_017001321.3 | c.675+236T>G | intron_variant |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
MPZ | ENST00000533357.5 | c.*4T>G | 3_prime_UTR_variant | 6/6 | 1 | NM_000530.8 | P1 |
Frequencies
GnomAD3 genomes ? Cov.: 31
GnomAD3 genomes
?
Cov.:
31
GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0AN: 1459140Hom.: 0 Cov.: 30 AF XY: 0.00 AC XY: 0AN XY: 725956
GnomAD4 exome
Data not reliable, filtered out with message: AC0
AF:
AC:
0
AN:
1459140
Hom.:
Cov.:
30
AF XY:
AC XY:
0
AN XY:
725956
Gnomad4 AFR exome
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GnomAD4 genome ? Cov.: 31
GnomAD4 genome
?
Cov.:
31
ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
Charcot-Marie-Tooth disease dominant intermediate D Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Baylor Genetics | Jun 30, 2019 | This variant was determined to be of uncertain significance according to ACMG Guidelines, 2015 [PMID:25741868]. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
Cadd
Benign
Dann
Benign
Splicing
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SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at