rs121918548

Positions:

chr12-53307698-G-A

Variant summary

Our verdict is Pathogenic. Variant got 14 ACMG points: 14P and 0B. PVS1_StrongPM2PP5_Very_Strong

The NM_015665.6(AAAS):c.1432C>T(p.Arg478Ter) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000217 in 1,613,950 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: 𝑓 0.000072 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000016 ( 0 hom. )

Consequence

AAAS
NM_015665.6 stop_gained

Scores

Clinical Significance

Pathogenic criteria provided, multiple submitters, no conflicts P:9

Conservation

PhyloP100: 2.01

Variant links:

Genes affected

AAAS (HGNC:13666): (aladin WD repeat nucleoporin) The protein encoded by this gene is a member of the WD-repeat family of regulatory proteins and may be involved in normal development of the peripheral and central nervous system. The encoded protein is part of the nuclear pore complex and is anchored there by NDC1. Defects in this gene are a cause of achalasia-addisonianism-alacrima syndrome (AAAS), also called triple-A syndrome or Allgrove syndrome. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Mar 2010]

AAAS links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 14 ACMG points.

PVS1

Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most exon, not predicted to undergo nonsense mediated mRNA decay. Fraction of 0.127 CDS is truncated, and there are 2 pathogenic variants in the truncated region.

PM2

Very rare variant in population databases, with high coverage;

PP5

Variant 12-53307698-G-A is Pathogenic according to our data. Variant chr12-53307698-G-A is described in ClinVar as [Pathogenic]. Clinvar id is 5040.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr12-53307698-G-A is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
AAAS	NM_015665.6 linkuse as main transcript	c.1432C>T	p.Arg478Ter	stop_gained	16/16	ENST00000209873.9
AAAS	NM_001173466.2 linkuse as main transcript	c.1333C>T	p.Arg445Ter	stop_gained	15/15

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
AAAS	ENST00000209873.9 linkuse as main transcript	c.1432C>T	p.Arg478Ter	stop_gained	16/16	1	NM_015665.6	P1	Q9NRG9-1

Frequencies

GnomAD3 genomes

AF:

0.0000723

AC:

AN:

152166

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000169

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000400

AC:

AN:

250206

Hom.:

AF XY:

0.0000517

AC XY:

AN XY:

135474

show subpopulations

Gnomad AFR exome

AF:

0.000186

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000531

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000164

AC:

AN:

1461784

Hom.:

Cov.:

AF XY:

0.0000206

AC XY:

AN XY:

727184

show subpopulations

Gnomad4 AFR exome

AF:

0.0000896

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000232

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000162

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000723

AC:

AN:

152166

Hom.:

Cov.:

AF XY:

0.0000941

AC XY:

AN XY:

74352

show subpopulations

Gnomad4 AFR

AF:

0.000169

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000441

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000399

Hom.:

Bravo

AF:

0.0000302

ExAC

AF:

0.0000494

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:9

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Glucocorticoid deficiency with achalasia

Pathogenic:5

Pathogenic, criteria provided, single submitter	clinical testing	Pathology and Clinical Laboratory Medicine, King Fahad Medical City	-	- -
Pathogenic, criteria provided, single submitter	clinical testing	Fulgent Genetics, Fulgent Genetics	May 12, 2022	- -
Pathogenic, criteria provided, single submitter	clinical testing	Revvity Omics, Revvity	Aug 29, 2020	- -
Pathogenic, no assertion criteria provided	clinical testing	Biochemical Molecular Genetic Laboratory, King Abdulaziz Medical City	Jan 29, 2019	- -
Pathogenic, no assertion criteria provided	literature only	OMIM	Mar 26, 2002	- -

not provided

Pathogenic:3

Pathogenic, criteria provided, single submitter	clinical testing	Invitae	Dec 04, 2023	This sequence change creates a premature translational stop signal (p.Arg478*) in the AAAS gene. While this is not anticipated to result in nonsense mediated decay, it is expected to disrupt the last 69 amino acid(s) of the AAAS protein. This variant is present in population databases (rs121918548, gnomAD 0.01%). This premature translational stop signal has been observed in individuals with triple A syndrome (PMID: 11062474, 14646395, 29874194, 30381913). It has also been observed to segregate with disease in related individuals. ClinVar contains an entry for this variant (Variation ID: 5040). Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. For these reasons, this variant has been classified as Pathogenic. -
Pathogenic, criteria provided, single submitter	clinical testing	GeneDx	Nov 16, 2020	Published functional studies demonstrate a damaging effect due to mislocalization of the ALADIN protein (Krumbholtz et al., 2006); Nonsense variant predicted to result in protein truncation, although loss-of-function variants have not been reported downstream of this position in the protein; This variant is associated with the following publications: (PMID: 11062474, 12008750, 16609705, 11914417, 14646395, 20499090, 30381913, 29874194, 31980526) -
Pathogenic, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Apr 01, 2019	- -

Neurodevelopmental disorder

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Laboratory of Molecular Genetics (Pr. Bezieau's lab), CHU de Nantes

Oct 07, 2021

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.45

BayesDel_noAF

Pathogenic

0.53

CADD

Pathogenic

DANN

Uncertain

1.0

Eigen

Pathogenic

0.74

Eigen_PC

Uncertain

0.60

FATHMM_MKL

Uncertain

0.89

MutationTaster

Benign

1.0

A;A;A

Vest4

0.88

GERP RS

4.5

RBP_binding_hub_radar

0.92

RBP_regulation_power_radar

2.6

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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