chr21-44297705-C-T
Variant summary
Our verdict is Pathogenic. Variant got 12 ACMG points: 12P and 0B. PP3_StrongPP5_Very_Strong
The NM_000383.4(AIRE):c.1616C>T(p.Pro539Leu) variant causes a missense change. The variant allele was found at a frequency of 0.000018 in 1,612,284 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 Likely pathogenic (★★).
Frequency
Consequence
NM_000383.4 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Pathogenic. Variant got 12 ACMG points.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes AF: 0.0000263 AC: 4AN: 152208Hom.: 0 Cov.: 33
GnomAD3 exomes AF: 0.0000201 AC: 5AN: 249350Hom.: 0 AF XY: 0.00000738 AC XY: 1AN XY: 135500
GnomAD4 exome AF: 0.0000171 AC: 25AN: 1460076Hom.: 0 Cov.: 32 AF XY: 0.0000138 AC XY: 10AN XY: 726386
GnomAD4 genome AF: 0.0000263 AC: 4AN: 152208Hom.: 0 Cov.: 33 AF XY: 0.0000269 AC XY: 2AN XY: 74362
ClinVar
Submissions by phenotype
Polyglandular autoimmune syndrome, type 1 Pathogenic:6
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PS3, PM3, PM2, PP3 -
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This sequence change replaces proline, which is neutral and non-polar, with leucine, which is neutral and non-polar, at codon 539 of the AIRE protein (p.Pro539Leu). This variant is present in population databases (rs179363889, gnomAD 0.006%). This missense change has been observed in individuals with autosomal recessive autoimmune polyendocrinopathy-candidiasis-ectodermal dystrophy (APECED) (PMID: 11836330, 15811934, 17289071, 21295522, 28446514). ClinVar contains an entry for this variant (Variation ID: 68218). 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) has been performed at Invitae for this missense variant, however the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on AIRE protein function. Experimental studies have shown that this missense change affects AIRE function (PMID: 17675238). For these reasons, this variant has been classified as Pathogenic. -
not provided Pathogenic:2Other:1
Published functional studies demonstrate a reduction of transactivation activity compared to normal protein (PMID: 17675238); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; This variant is associated with the following publications: (PMID: 21295522, 30018023, 15511668, 28446514, 23000069, 12398240, 17289071, 18713028, 15751604, 11836330, 15811934, 34846681, 17675238) -
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AIRE-related disorder Pathogenic:1
The AIRE c.1616C>T variant is predicted to result in the amino acid substitution p.Pro539Leu. This variant has been reported, in the homozygous state or compound heterozygous state, in several patients with autoimmune polyendocrinopathy-candidiasis-ectodermal dystrophy (APECED) (Meloni et al. 2002. PubMed ID: 11836330; Perry et al. 2005. PubMed ID: 15811934; Meyer et al. 2007. PubMed ID: 17289071; Mazza et al. 2011. PubMed ID: 21295522; Zaidi et al. 2017. PubMed ID: 28446514, see Supplementary Table 1). The p.Pro539Leu change occurs at the first residue of the proline-rich PxxPxP motif (residues 539-544) at the very end of the C-terminus of the protein. The fourth LxxLL and the PxxPxP motifs at the C-terminus are critical for the transactivation capacity of the AIRE protein (Meloni et al. 2008. PubMed ID: 17675238). Meloni et al. showed that the p.Pro539Leu substitution resulted in a reduction of 77% in the transactivation activity. This variant has interpretations of Pathogenic and Likely Pathogenic in ClinVar (https://www.ncbi.nlm.nih.gov/clinvar/variation/68218/). In summary, the c.1616C>T (p.Pro539Leu) variant is categorized as pathogenic. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at