1-17044882-G-T
Variant summary
Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate
The NM_003000.3(SDHB):c.79C>A(p.Arg27=) variant causes a synonymous change. The variant allele was found at a frequency of 0.00000658 in 151,998 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.
Frequency
Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)
Consequence
SDHB
NM_003000.3 synonymous
NM_003000.3 synonymous
Scores
2
Clinical Significance
Not reported in ClinVar
Conservation
PhyloP100: 5.92
Genes affected
SDHB (HGNC:10681): (succinate dehydrogenase complex iron sulfur subunit B) This tumor suppressor gene encodes the iron-sulfur protein subunit of the succinate dehydrogenase (SDH) enzyme complex which plays a critical role in mitochondria. The SDH enzyme complex is composed of four nuclear-encoded subunits. This enzyme complex converts succinate to fumarate which releases electrons as part of the citric acid cycle, and the enzyme complex additionally provides an attachment site for released electrons to be transferred to the oxidative phosphorylation pathway. The SDH enzyme complex plays a role in oxygen-related gene regulation through its conversion of succinate, which is an oxygen sensor that stabilizes the hypoxia-inducible factor 1 (HIF1) transcription factor. Sporadic and familial mutations in this gene result in paragangliomas, pheochromocytoma, and gastrointestinal stromal tumors, supporting a link between mitochondrial dysfunction and tumorigenesis. Mutations in this gene are also implicated in nuclear type 4 mitochondrial complex II deficiency. [provided by RefSeq, Jun 2022]
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ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 0 ACMG points.
PM2
?
Very rare variant in population databases, with high coverage;
BP4
?
Computational evidence support a benign effect (BayesDel_noAF=-0.45).
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
SDHB | NM_003000.3 | c.79C>A | p.Arg27= | synonymous_variant | 2/8 | ENST00000375499.8 | |
SDHB | NM_001407361.1 | c.79C>A | p.Arg27= | synonymous_variant | 2/8 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
SDHB | ENST00000375499.8 | c.79C>A | p.Arg27= | synonymous_variant | 2/8 | 1 | NM_003000.3 | P1 |
Frequencies
GnomAD3 genomes ? AF: 0.00000658 AC: 1AN: 151998Hom.: 0 Cov.: 32
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GnomAD4 exome Cov.: 32
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GnomAD4 genome ? AF: 0.00000658 AC: 1AN: 151998Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1AN XY: 74240
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ClinVar
Not reported inComputational scores
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BayesDel_noAF
Benign
Cadd
Benign
Dann
Benign
RBP_binding_hub_radar
RBP_regulation_power_radar
Splicing
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SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at