5-218354-A-G
Variant summary
Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong
The NM_004168.4(SDHA):c.-2A>G variant causes a 5 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000343 in 1,458,956 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 (★★).
Frequency
Consequence
NM_004168.4 5_prime_UTR
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_benign. Variant got -2 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
SDHA | NM_004168.4 | c.-2A>G | 5_prime_UTR_variant | Exon 1 of 15 | ENST00000264932.11 | NP_004159.2 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
SDHA | ENST00000264932 | c.-2A>G | 5_prime_UTR_variant | Exon 1 of 15 | 1 | NM_004168.4 | ENSP00000264932.6 | |||
ENSG00000286001 | ENST00000651543.1 | n.-2A>G | non_coding_transcript_exon_variant | Exon 1 of 24 | ENSP00000499215.1 | |||||
ENSG00000286001 | ENST00000651543.1 | n.-2A>G | 5_prime_UTR_variant | Exon 1 of 24 | ENSP00000499215.1 |
Frequencies
GnomAD3 genomes AF: 0.00000657 AC: 1AN: 152142Hom.: 0 Cov.: 34
GnomAD4 exome AF: 0.00000306 AC: 4AN: 1306814Hom.: 0 Cov.: 31 AF XY: 0.00000620 AC XY: 4AN XY: 645024
GnomAD4 genome AF: 0.00000657 AC: 1AN: 152142Hom.: 0 Cov.: 34 AF XY: 0.0000135 AC XY: 1AN XY: 74318
ClinVar
Submissions by phenotype
not provided Uncertain:2
Not observed at significant frequency in large population cohorts (gnomAD); Nucleotide is not conserved across species and the substitution has no predicted effect on splicing; Has not been previously published as pathogenic or benign to our knowledge -
The SDHA c.-2A>G variant has not been reported in individuals with SDHA-related conditions in the published literature. The frequency of this variant in the general population, 0.0000066 (1/152142 chromosomes (Genome Aggregation Database, http://gnomad.broadinstitute.org)), is uninformative in the assessment of its pathogenicity. Based on the available information, we are unable to determine the clinical significance of this variant. -
Hereditary cancer-predisposing syndrome Uncertain:1
The c.-2A>G variant is located in the 5' untranslated region (5’ UTR) of the SDHA gene. This variant results from an A to G substitution 2 bases upstream from the first translated codon. This nucleotide position is not well conserved in available vertebrate species. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at