21-44286008-T-G

Position:

• chr21-44286008-T-G

Variant summary

Our verdict is Pathogenic. Variant got 14 ACMG points: 14P and 0B. PVS1 PS1_Moderate PM2 PP5_Moderate

The ENST00000291582.6(AIRE):​c.2T>G​(p.Met1?) variant causes a start lost change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Pathogenic (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: AIRE ENST00000291582.6 start_lost
• Clinical Significance: Pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: -5.77

Genes affected

AIRE (HGNC:360): (autoimmune regulator) This gene encodes a transcriptional regulator that forms nuclear bodies and interacts with the transcriptional coactivator CREB binding protein. The encoded protein plays an important role in immunity by regulating the expression of autoantigens and negative selection of autoreactive T-cells in the thymus. Mutations in this gene cause the rare autosomal-recessive systemic autoimmune disease termed autoimmune polyendocrinopathy with candidiasis and ectodermal dystrophy (APECED). [provided by RefSeq, Jun 2012]

AIRE (HGNC:):

ACMG classification

Verdict is Pathogenic. Variant got 14 ACMG points.

• PVS1: Start lost variant, no new inframe start found.
• PS1: Another start lost variant in ENST00000291582.6 (AIRE) was described as [Pathogenic] in ClinVar as 3314
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 21-44286008-T-G is Pathogenic according to our data. Variant chr21-44286008-T-G is described in ClinVar as [Pathogenic]. Clinvar id is 1451244.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
AIRE	NM_000383.4	c.2T>G	p.Met1?	start_lost	1/14	ENST00000291582.6	NP_000374.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
AIRE	ENST00000291582.6	c.2T>G	p.Met1?	start_lost	1/14	1	NM_000383.4	ENSP00000291582.5
AIRE	ENST00000527919.5	n.163T>G		non_coding_transcript_exon_variant	1/14	2
AIRE	ENST00000530812.5	n.171T>G		non_coding_transcript_exon_variant	1/12	2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

Submissions by phenotype

Polyglandular autoimmune syndrome, type 1 Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 11, 2022

For these reasons, this variant has been classified as Pathogenic. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may create or strengthen a splice site. Disruption of the initiator codon has been observed in individual(s) with autosomal recessive autoimmune polyendocrinopathy syndrome (PMID: 16965330, 19758376, 28446514, 28911151). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. This variant is not present in population databases (gnomAD no frequency). This sequence change affects the initiator methionine of the AIRE mRNA. The next in-frame methionine is located at codon 184. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.62	D
BayesDel_noAF	Benign	-0.12
CADD	Benign	6.0
DANN	Benign	0.83
DEOGEN2	Benign	0.25	T
Eigen	Benign	-0.94
Eigen_PC	Benign	-1.1
FATHMM_MKL	Benign	0.0049	N
LIST_S2	Uncertain	0.90	D
M_CAP	Pathogenic	0.49	D
MetaRNN	Uncertain	0.74	D
MetaSVM	Uncertain	-0.21	T
MutationTaster	Benign	1.0	D
PROVEAN	Benign	0.0	N
REVEL	Uncertain	0.41
Sift	Uncertain	0.011	D
Sift4G	Uncertain	0.0060	D
Polyphen		0.45	P
Vest4		0.32
MutPred		0.70		Gain of methylation at M1 (P = 0.006);
MVP		0.99
ClinPred		0.068	T
GERP RS		-0.84
Varity_R		0.48
gMVP		0.80

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr21-45705891;