rs779143585
Variant summary
Our verdict is Benign. Variant got -11 ACMG points: 0P and 11B. BP4_ModerateBP6_Very_StrongBP7
The NM_003000.3(SDHB):c.696C>T(p.Ala232=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000479 in 1,461,730 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 Likely benign (★★).
Frequency
Genomes: not found (cov: 32)
Exomes 𝑓: 0.0000048 ( 0 hom. )
Consequence
SDHB
NM_003000.3 synonymous
NM_003000.3 synonymous
Scores
2
Clinical Significance
Conservation
PhyloP100: 2.86
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 Benign. Variant got -11 ACMG points.
BP4
?
Computational evidence support a benign effect (BayesDel_noAF=-0.33).
BP6
?
Variant 1-17022677-G-A is Benign according to our data. Variant chr1-17022677-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 528754.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BP7
?
Synonymous conserved (PhyloP=2.86 with no splicing effect.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
SDHB | NM_003000.3 | c.696C>T | p.Ala232= | synonymous_variant | 7/8 | ENST00000375499.8 | |
SDHB | NM_001407361.1 | c.642C>T | p.Ala214= | synonymous_variant | 7/8 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
SDHB | ENST00000375499.8 | c.696C>T | p.Ala232= | synonymous_variant | 7/8 | 1 | NM_003000.3 | P1 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD3 genomes
?
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GnomAD3 exomes AF: 0.00000795 AC: 2AN: 251440Hom.: 0 AF XY: 0.00000736 AC XY: 1AN XY: 135892
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GnomAD4 exome AF: 0.00000479 AC: 7AN: 1461730Hom.: 0 Cov.: 31 AF XY: 0.00000275 AC XY: 2AN XY: 727170
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GnomAD4 genome ? Cov.: 32
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ClinVar
Significance: Likely benign
Submissions summary: Benign:4
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
not specified Benign:1
Likely benign, criteria provided, single submitter | clinical testing | Genetic Services Laboratory, University of Chicago | Mar 19, 2020 | - - |
Pheochromocytoma;C0238198:Gastrointestinal stromal tumor;C1861848:Paragangliomas 4 Benign:1
Likely benign, criteria provided, single submitter | clinical testing | Invitae | Jan 05, 2024 | - - |
not provided Benign:1
Likely benign, criteria provided, single submitter | clinical testing | ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories | Oct 30, 2023 | - - |
Hereditary cancer-predisposing syndrome Benign:1
Likely benign, criteria provided, single submitter | clinical testing | Ambry Genetics | Aug 18, 2017 | This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. - |
Computational 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