17-15260686-C-G

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 2P and 7B. PM2BP4_StrongBP6_ModerateBP7

The NM_000304.4(PMP22):ā€‹c.42G>Cā€‹(p.Ala14=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000714 in 1,401,228 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (ā˜…). Synonymous variant affecting the same amino acid position (i.e. A14A) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 33)
Exomes š‘“: 7.1e-7 ( 0 hom. )

Consequence

PMP22
NM_000304.4 synonymous

Scores

2

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: -8.32
Variant links:
Genes affected
PMP22 (HGNC:9118): (peripheral myelin protein 22) This gene encodes an integral membrane protein that is a major component of myelin in the peripheral nervous system. Studies suggest two alternately used promoters drive tissue-specific expression. Various mutations of this gene are causes of Charcot-Marie-Tooth disease Type IA, Dejerine-Sottas syndrome, and hereditary neuropathy with liability to pressure palsies. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2013]

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -5 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.56).
BP6
Variant 17-15260686-C-G is Benign according to our data. Variant chr17-15260686-C-G is described in ClinVar as [Likely_benign]. Clinvar id is 1092528.Status of the report is criteria_provided_single_submitter, 1 stars.
BP7
Synonymous conserved (PhyloP=-8.32 with no splicing effect.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
PMP22NM_000304.4 linkuse as main transcriptc.42G>C p.Ala14= synonymous_variant 2/5 ENST00000312280.9

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
PMP22ENST00000312280.9 linkuse as main transcriptc.42G>C p.Ala14= synonymous_variant 2/51 NM_000304.4 P1
ENST00000623265.1 linkuse as main transcriptn.174C>G non_coding_transcript_exon_variant 1/1

Frequencies

GnomAD3 genomes
Cov.:
33
GnomAD4 exome
AF:
7.14e-7
AC:
1
AN:
1401228
Hom.:
0
Cov.:
30
AF XY:
0.00000145
AC XY:
1
AN XY:
691284
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:
9.26e-7
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
33

ClinVar

Significance: Likely benign
Submissions summary: Benign:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Charcot-Marie-Tooth disease, type I Benign:1
Likely benign, criteria provided, single submitterclinical testingLabcorp Genetics (formerly Invitae), LabcorpOct 29, 2019- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.56
CADD
Benign
1.7
DANN
Benign
0.92

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.

Other links and lift over

dbSNP: rs1555568786; hg19: chr17-15164003; API