rs267606573
Variant summary
Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BS2
The NM_003977.4(AIP):c.721A>G(p.Lys241Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000143 in 1,612,562 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★).
Frequency
Consequence
NM_003977.4 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_benign. Variant got -4 ACMG points.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes AF: 0.0000131 AC: 2AN: 152130Hom.: 0 Cov.: 33
GnomAD3 exomes AF: 0.0000362 AC: 9AN: 248460Hom.: 0 AF XY: 0.0000445 AC XY: 6AN XY: 134940
GnomAD4 exome AF: 0.0000144 AC: 21AN: 1460432Hom.: 0 Cov.: 34 AF XY: 0.0000165 AC XY: 12AN XY: 726500
GnomAD4 genome AF: 0.0000131 AC: 2AN: 152130Hom.: 0 Cov.: 33 AF XY: 0.0000269 AC XY: 2AN XY: 74316
ClinVar
Submissions by phenotype
not provided Uncertain:1
This sequence change replaces lysine, which is basic and polar, with glutamic acid, which is acidic and polar, at codon 241 of the AIP protein (p.Lys241Glu). This variant is present in population databases (rs267606573, gnomAD 0.008%). This missense change has been observed in individual(s) with familial isolated pituitary adenoma (PMID: 17244780). ClinVar contains an entry for this variant (Variation ID: 41200). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is not expected to disrupt AIP protein function with a negative predictive value of 80%. Experimental studies are conflicting or provide insufficient evidence to determine the effect of this variant on AIP function (PMID: 19366855, 20506337). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -
Hereditary cancer-predisposing syndrome Uncertain:1
The p.K241E variant (also known as c.721A>G), located in coding exon 5 of the AIP gene, results from an A to G substitution at nucleotide position 721. The lysine at codon 241 is replaced by glutamic acid, an amino acid with similar properties. This alteration has been observed in patients with pituitary adenomas (Daly AF et al. J Clin Endocrinol Metab, 2007 May;92:1891-6; Jaffrain-Rea ML et al. Endocr Relat Cancer, 2009 Sep;16:1029-43). Protein functional studies have shown this alteration to be potentially deleterious to PDE4A5 interactions, but to not impair the AIP-RET interaction (Bolger GB et al. Endocr Relat Cancer, 2016 05;23:419-31; Igreja S et al. Hum Mutat, 2010 Aug;31:950-60; Vargiolu M et al. J Clin Endocrinol Metab, 2009 Jul;94:2571-8). This amino acid position is well conserved in available vertebrate species. In addition, this alteration is predicted to be deleterious by in silico analysis. Since supporting evidence is conflicting at this time, the clinical significance of this alteration remains unclear. -
Somatotroph adenoma Other:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at