Variant 8-74350462-A-G details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Pathogenic. Variant got 12 ACMG points: 12P and 0B. PVS1PM2PP5_Moderate

The NM_018972.4(GDAP1):c.1A>G(p.Met1?) variant causes a start lost change. The variant allele was found at a frequency of 0.00000138 in 1,449,192 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 Pathogenic (★).

Frequency

Genomes: not found (cov: 34)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

GDAP1
NM_018972.4 start_lost

Scores

Clinical Significance

Pathogenic criteria provided, single submitter P:1

Conservation

PhyloP100: 3.60

Variant links:

Genes affected

GDAP1 (HGNC:15968): (ganglioside induced differentiation associated protein 1) This gene encodes a member of the ganglioside-induced differentiation-associated protein family, which may play a role in a signal transduction pathway during neuronal development. Mutations in this gene have been associated with various forms of Charcot-Marie-Tooth Disease and neuropathy. Two transcript variants encoding different isoforms and a noncoding variant have been identified for this gene. [provided by RefSeq, Feb 2012]

GDAP1 links:

GDAP1 (HGNC:):

GDAP1 links:

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ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 12 ACMG points.

PVS1

Start lost variant, no new inframe start found.

PM2

Very rare variant in population databases, with high coverage;

PP5

Variant 8-74350462-A-G is Pathogenic according to our data. Variant chr8-74350462-A-G is described in ClinVar as [Pathogenic]. Clinvar id is 2423924.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
GDAP1	NM_018972.4 linkuse as main transcript	c.1A>G	p.Met1?	start_lost	1/6	ENST00000220822.12	NP_061845.2	Q8TB36-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
GDAP1	ENST00000220822.12 linkuse as main transcript	c.1A>G	p.Met1?	start_lost	1/6	1	NM_018972.4	ENSP00000220822.7		Q8TB36-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000803

AC:

AN:

249032

Hom.:

AF XY:

0.00000741

AC XY:

AN XY:

134890

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000885

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000138

AC:

AN:

1449192

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

721832

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:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000167

GnomAD4 genome

Cov.:

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Charcot-Marie-Tooth disease type 4A

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Sep 08, 2023

This sequence change affects the initiator methionine of the GDAP1 mRNA. The next in-frame methionine is located at codon 69. This variant is present in population databases (no rsID available, gnomAD 0.003%). Disruption of the initiator codon has been observed in individuals with autosomal recessive Charcot-Marie-Tooth disease (PMID: 29184355, 33179230). It has also been observed to segregate with disease in related individuals. ClinVar contains an entry for this variant (Variation ID: 2423924). For these reasons, this variant has been classified as Pathogenic. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.42

BayesDel_noAF

Pathogenic

0.46

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.10

Eigen

Benign

-0.30

Eigen_PC

Benign

-0.21

FATHMM_MKL

Benign

0.18

LIST_S2

Uncertain

0.90

M_CAP

Pathogenic

0.95

MetaRNN

Pathogenic

0.98

MetaSVM

Uncertain

0.74

MutationTaster

Benign

1.0

D;D

PROVEAN

Benign

-0.23

REVEL

Uncertain

0.60

Sift

Pathogenic

0.0

Sift4G

Benign

0.068

Polyphen

0.0070

Vest4

0.62

MutPred

0.99

Gain of loop (P = 0.0851);

MVP

0.93

ClinPred

0.99

GERP RS

3.9

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.6

Varity_R

0.94

gMVP

0.48

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over