X-153725754-G-T

Variant names:

Variant summary

Our verdict is Pathogenic. The variant received 12 ACMG points: 12P and 0B. PM1PM2PM5PP3_StrongPP5_Moderate

The NM_000033.4(ABCD1):c.488G>T(p.Arg163Leu) variant causes a missense change involving the alteration of a conserved nucleotide. 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 Likely pathogenic (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R163G) has been classified as Likely pathogenic.

Frequency

Genomes: not found (cov: 26)

Exomes 𝑓: 0.0 ( 0 hom. 0 hem. )

Failed GnomAD Quality Control

Consequence

ABCD1
NM_000033.4 missense

Scores

Clinical Significance

Likely pathogenic criteria provided, single submitter P:1

Conservation

PhyloP100: 9.54

Publications

1 publications found

Variant links:

Genes affected

ABCD1 (HGNC:61): (ATP binding cassette subfamily D member 1) The protein encoded by this gene is a member of the superfamily of ATP-binding cassette (ABC) transporters. ABC proteins transport various molecules across extra- and intra-cellular membranes. ABC genes are divided into seven distinct subfamilies (ABC1, MDR/TAP, MRP, ALD, OABP, GCN20, White). This protein is a member of the ALD subfamily, which is involved in peroxisomal import of fatty acids and/or fatty acyl-CoAs in the organelle. All known peroxisomal ABC transporters are half transporters which require a partner half transporter molecule to form a functional homodimeric or heterodimeric transporter. This peroxisomal membrane protein is likely involved in the peroxisomal transport or catabolism of very long chain fatty acids. Defects in this gene have been identified as the underlying cause of adrenoleukodystrophy, an X-chromosome recessively inherited demyelinating disorder of the nervous system. [provided by RefSeq, Jul 2008]

ABCD1 Gene-Disease associations (from GenCC):

adrenoleukodystrophy
Inheritance: XL Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), ClinGen, G2P
X-linked cerebral adrenoleukodystrophy
Inheritance: XL Classification: DEFINITIVE, SUPPORTIVE Submitted by: Laboratory for Molecular Medicine, Orphanet
hereditary spastic paraplegia
Inheritance: XL Classification: STRONG Submitted by: Genomics England PanelApp
Hirschsprung disease
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
adrenomyeloneuropathy
Inheritance: XL Classification: SUPPORTIVE Submitted by: Orphanet

ABCD1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Pathogenic. The variant received 12 ACMG points.

PM1

In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 2 benign, 11 uncertain in NM_000033.4

PM2

Very rare variant in population databases, with high coverage;

PM5

Other missense variant is known to change same aminoacid residue: Variant chrX-153725753-C-G is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 1323835.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.992

PP5

Variant X-153725754-G-T is Pathogenic according to our data. Variant chrX-153725754-G-T is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 1323829.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ABCD1	NM_000033.4 link	c.488G>T	p.Arg163Leu	missense_variant	Exon 1 of 10	ENST00000218104.6	NP_000024.2	P33897
ABCD1	NM_001440747.1 link	c.488G>T	p.Arg163Leu	missense_variant	Exon 1 of 11		NP_001427676.1
ABCD1	XM_047441917.1 link	c.488G>T	p.Arg163Leu	missense_variant	Exon 1 of 8		XP_047297873.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ABCD1	ENST00000218104.6 link	c.488G>T	p.Arg163Leu	missense_variant	Exon 1 of 10	1	NM_000033.4	ENSP00000218104.3		P33897
ABCD1	ENST00000370129.4 link	c.-68G>T		upstream_gene_variant		2		ENSP00000359147.3		A6NEP8

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

Data not reliable, filtered out with message: AC0

AF:

0.00

AC:

AN:

1097566

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

363288

African (AFR)

AF:

0.00

AC:

AN:

26403

American (AMR)

AF:

0.00

AC:

AN:

35200

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

19381

East Asian (EAS)

AF:

0.00

AC:

AN:

30203

South Asian (SAS)

AF:

0.00

AC:

AN:

54141

European-Finnish (FIN)

AF:

0.00

AC:

AN:

39907

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4137

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

842110

Other (OTH)

AF:

0.00

AC:

AN:

46084

GnomAD4 genome

Cov.:

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Adrenoleukodystrophy

Pathogenic:1

Apr 20, 2023

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

ClinVar contains an entry for this variant (Variation ID: 1323829). This sequence change replaces arginine, which is basic and polar, with leucine, which is neutral and non-polar, at codon 163 of the ABCD1 protein (p.Arg163Leu). This variant is not present in population databases (gnomAD no frequency). This missense change has been observed in individual(s) with adrenoleukodystrophy (PMID: 25324868). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt ABCD1 protein function. This variant disrupts the p.Arg163 amino acid residue in ABCD1. Other variant(s) that disrupt this residue have been determined to be pathogenic (PMID: 7825602, 10980309, 25324868, 26227820). This suggests that this residue is clinically significant, and that variants that disrupt this residue are likely to be disease-causing. In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has been classified as Likely Pathogenic. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.97

BayesDel_addAF

Pathogenic

0.73

BayesDel_noAF

Pathogenic

0.81

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

1.0

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.95

M_CAP

Pathogenic

0.92

MetaRNN

Pathogenic

0.99

MetaSVM

Pathogenic

0.89

MutationAssessor

Pathogenic

3.6

PhyloP100

9.5

PrimateAI

Uncertain

0.70

PROVEAN

Pathogenic

-6.6

REVEL

Pathogenic

0.99

Sift

Uncertain

0.0010

Sift4G

Pathogenic

0.0

Polyphen

1.0

Vest4

0.92

MutPred

0.88

Loss of catalytic residue at R163 (P = 0.0047);

MVP

1.0

MPC

1.7

ClinPred

1.0

GERP RS

5.4

PromoterAI

0.0079

Neutral

(source)

Varity_R

0.97

gMVP

1.0

Mutation Taster

=0/100

disease causing

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over