rs878854595
Variant summary
Our verdict is Uncertain significance. Variant got 2 ACMG points: 4P and 2B. PM1PM2BP4_Moderate
The NM_003002.4(SDHD):c.375G>T(p.Lys125Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000124 in 1,611,836 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 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. K125R) has been classified as Uncertain significance.
Frequency
Consequence
NM_003002.4 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Uncertain_significance. Variant got 2 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
SDHD | NM_003002.4 | c.375G>T | p.Lys125Asn | missense_variant | 4/4 | ENST00000375549.8 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
SDHD | ENST00000375549.8 | c.375G>T | p.Lys125Asn | missense_variant | 4/4 | 1 | NM_003002.4 | P1 |
Frequencies
GnomAD3 genomes ? AF: 0.00000657 AC: 1AN: 152228Hom.: 0 Cov.: 32
GnomAD4 exome AF: 6.85e-7 AC: 1AN: 1459608Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1AN XY: 726114
GnomAD4 genome ? AF: 0.00000657 AC: 1AN: 152228Hom.: 0 Cov.: 32 AF XY: 0.0000134 AC XY: 1AN XY: 74368
ClinVar
Submissions by phenotype
Pheochromocytoma;C1847319:Carney-Stratakis syndrome;C1868633:Paragangliomas with sensorineural hearing loss;CN166604:Cowden syndrome 3 Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Dec 11, 2023 | This sequence change replaces lysine, which is basic and polar, with asparagine, which is neutral and polar, at codon 125 of the SDHD protein (p.Lys125Asn). This variant is present in population databases (no rsID available, gnomAD 0.007%). This variant has not been reported in the literature in individuals affected with SDHD-related conditions. ClinVar contains an entry for this variant (Variation ID: 239471). Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Not Available"; PolyPhen-2: "Benign"; Align-GVGD: "Not Available". The asparagine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. 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
Uncertain significance, criteria provided, single submitter | clinical testing | Ambry Genetics | May 30, 2019 | The p.K125N variant (also known as c.375G>T), located in coding exon 4 of the SDHD gene, results from a G to T substitution at nucleotide position 375. The lysine at codon 125 is replaced by asparagine, an amino acid with similar properties. This amino acid position is not well conserved in available vertebrate species. 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. - |
Hereditary pheochromocytoma-paraganglioma Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | All of Us Research Program, National Institutes of Health | Jan 03, 2024 | This missense variant replaces lysine with asparagine at codon 125 of the SDHD protein. Computational prediction suggests that this variant may not impact protein structure and function (internally defined REVEL score threshold <= 0.5, PMID: 27666373). To our knowledge, functional studies have not been reported for this variant. This variant has not been reported in individuals affected with SDHD-related disorders in the literature. This variant has been identified in 1/31402 chromosomes in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance. - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at