chr4-168903905-A-G
Variant summary
Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BS2
The NM_001166108.2(PALLD):c.2621A>G(p.Gln874Arg) variant causes a missense, splice region change. The variant allele was found at a frequency of 0.0000174 in 1,613,620 control chromosomes in the GnomAD database, with no homozygous occurrence. 2/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. Q874P) has been classified as Uncertain significance.
Frequency
Consequence
NM_001166108.2 missense, splice_region
Scores
Clinical Significance
Conservation
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ACMG classification
Our verdict: Likely_benign. The variant received -4 ACMG points.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes AF: 0.0000197 AC: 3AN: 152206Hom.: 0 Cov.: 32 show subpopulations
GnomAD2 exomes AF: 0.0000239 AC: 6AN: 251212 AF XY: 0.0000147 show subpopulations
GnomAD4 exome AF: 0.0000171 AC: 25AN: 1461414Hom.: 0 Cov.: 30 AF XY: 0.0000179 AC XY: 13AN XY: 727052 show subpopulations
GnomAD4 genome AF: 0.0000197 AC: 3AN: 152206Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0AN XY: 74366 show subpopulations
ClinVar
Submissions by phenotype
not specified Uncertain:1
The p.Q857R variant (also known as c.2570A>G), located in coding exon 13 of the PALLD gene, results from an A to G substitution at nucleotide position 2570. The glutamine at codon 857 is replaced by arginine, an amino acid with highly similar properties. This amino acid position is conserved. In addition, the in silico prediction for this alteration is inconclusive. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -
Pancreatic adenocarcinoma Uncertain:1
This sequence change replaces glutamine, which is neutral and polar, with arginine, which is basic and polar, at codon 370 of the PALLD protein (p.Gln370Arg). This variant is present in population databases (rs761530979, gnomAD 0.005%). This variant has not been reported in the literature in individuals affected with PALLD-related conditions. ClinVar contains an entry for this variant (Variation ID: 216531). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be tolerated. 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. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at