NM_000533.5:c.696+8G>T

Variant names:

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP4_StrongBP6BS2

The NM_000533.5(PLP1):c.696+8G>T variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000227 in 1,146,397 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 6 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.0000090 ( 0 hom., 1 hem., cov: 23)

Exomes 𝑓: 0.000024 ( 0 hom. 5 hem. )

Consequence

PLP1
NM_000533.5 splice_region, intron

Scores

Splicing: ADA: 0.0001071

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:4

Conservation

PhyloP100: -0.149

Publications

0 publications found

Variant links:

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]

PLP1 links:

ENSG00000288597 (HGNC:):

ENSG00000288597 links:

RAB9B (HGNC:14090): (RAB9B, member RAS oncogene family) This gene encodes a member of a subfamily of RAS small guanosine triphosphate (GTP)-binding proteins that regulate membrane trafficking. The encoded protein may be involved in endosome-to-Golgi transport. [provided by RefSeq, Jan 2010]

RAB9B links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -9 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.82).

BP6

Variant X-103788518-G-T is Benign according to our data. Variant chrX-103788518-G-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 436344.

BS2

High Hemizygotes in GnomAdExome4 at 5 XL gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000533.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein
PLP1	NM_000533.5	MANE Select	c.696+8G>T	splice_region intron	N/A	NP_000524.3
PLP1	NM_001128834.3		c.696+8G>T	splice_region intron	N/A	NP_001122306.1
PLP1	NM_199478.3		c.591+8G>T	splice_region intron	N/A	NP_955772.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein
PLP1	ENST00000621218.5	TSL:1 MANE Select	c.696+8G>T	splice_region intron	N/A	ENSP00000484450.1
PLP1	ENST00000619236.1	TSL:1	c.591+8G>T	splice_region intron	N/A	ENSP00000477619.1
PLP1	ENST00000494119.1	TSL:4	n.250G>T	non_coding_transcript_exon	Exon 2 of 2

Frequencies

GnomAD3 genomes

AF:

0.00000896

AC:

AN:

111548

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000326

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.0000242

AC:

AN:

1034849

Hom.:

Cov.:

AF XY:

0.0000162

AC XY:

AN XY:

307829

show subpopulations

African (AFR)

AF:

0.000158

AC:

AN:

25241

American (AMR)

AF:

0.0000285

AC:

AN:

35141

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

18992

East Asian (EAS)

AF:

0.00

AC:

AN:

30007

South Asian (SAS)

AF:

0.00

AC:

AN:

52675

European-Finnish (FIN)

AF:

0.00

AC:

AN:

40512

Middle Eastern (MID)

AF:

0.000251

AC:

AN:

3980

European-Non Finnish (NFE)

AF:

0.0000179

AC:

AN:

784251

Other (OTH)

AF:

0.000114

AC:

AN:

44050

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.487

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00000896

AC:

AN:

111548

Hom.:

Cov.:

AF XY:

0.0000296

AC XY:

AN XY:

33768

show subpopulations

African (AFR)

AF:

0.0000326

AC:

AN:

30680

American (AMR)

AF:

0.00

AC:

AN:

10495

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

2646

East Asian (EAS)

AF:

0.00

AC:

AN:

3573

South Asian (SAS)

AF:

0.00

AC:

AN:

2635

European-Finnish (FIN)

AF:

0.00

AC:

AN:

6014

Middle Eastern (MID)

AF:

0.00

AC:

AN:

238

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

53094

Other (OTH)

AF:

0.00

AC:

AN:

1493

Alfa

AF:

0.000169

Hom.:

Bravo

AF:

0.0000340

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:4

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Benign:3

Jun 01, 2025

CeGaT Center for Human Genetics Tuebingen

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

PLP1: BP4, BS2

Laboratory of Diagnostic Genome Analysis, Leiden University Medical Center (LUMC)

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

not specified

Uncertain:2

Mar 14, 2025

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Variant summary: PLP1 c.696+8G>T alters a non-conserved nucleotide located close to a canonical splice site and therefore could affect mRNA splicing, leading to a significantly altered protein sequence. Consensus agreement among computation tools predict no significant impact on normal splicing. However, these predictions have yet to be confirmed by functional studies. The variant was absent in 183235 control chromosomes. The available data on variant occurrences in the general population are insufficient to allow any conclusion about variant significance. To our knowledge, no occurrence of c.696+8G>T in individuals affected with Pelizaeus-Merzbacher disease and no experimental evidence demonstrating its impact on protein function have been reported. ClinVar contains an entry for this variant (Variation ID: 436344). Based on the evidence outlined above, the variant was classified as uncertain significance.

Mar 03, 2017

Genetic Services Laboratory, University of Chicago

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Hereditary spastic paraplegia 2

Benign:1

Oct 30, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.82

CADD

Benign

2.0

(source)

DANN

Benign

0.61

PhyloP100

-0.15

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.00011

dbscSNV1_RF

Benign

0.0040

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over