SDHC

succinate dehydrogenase complex subunit C, the group of Mitochondrial complex II: succinate dehydrogenase subunits

Basic information

Region (hg38): 1:161314380-161363206

Previous symbols: [ "PGL3" ]

Links

ENSG00000143252 ∙ NCBI:6391 ∙ OMIM:602413 ∙ HGNC:10682 ∙ Uniprot:Q99643 ∙ AlphaFold ∙ GenCC ∙ jax ∙ Sfari ∙ GnomAD ∙ Pubmed ∙ ClinVar

Phenotypes

GenCC

Source: genCC

• Carney-Stratakis syndrome (Strong), mode of inheritance: AD
• gastrointestinal stromal tumor (Strong), mode of inheritance: AD
• renal cell carcinoma (Moderate), mode of inheritance: AD
• paragangliomas 3 (Strong), mode of inheritance: AD
• Cowden disease (Supportive), mode of inheritance: AD
• hereditary pheochromocytoma-paraganglioma (Supportive), mode of inheritance: AD
• Carney-Stratakis syndrome (Supportive), mode of inheritance: AD
• paragangliomas 3 (Definitive), mode of inheritance: AD
• gastrointestinal stromal tumor (Strong), mode of inheritance: AD
• paragangliomas 3 (Strong), mode of inheritance: AD
• hereditary pheochromocytoma-paraganglioma (Definitive), mode of inheritance: AD
• mitochondrial disease (No Known Disease Relationship), mode of inheritance: Unknown

Clinical Genomic Database

Source: CGD

Condition	Inheritance	Intervention Categories	Intervention/Rationale	Manifestation Categories	References
Paraganglioma and gastric stromal sarcoma; Gastrointestinal stromal tumor; Pheochromocytoma/paraganglioma syndrome 3	AD	Oncologic	The condition involves increased risk of certain types of neoplasms, and surveillance/early treatment of tumors (eg, surgical resection) may be beneficial	Oncologic	15342702; 15342702; 16249420; 17804857; 17667967; 21173220; 21348866; 22703879

ClinVar

This is a list of variants' phenotypes submitted to ClinVar and linked to the SDHC gene.

• Gastrointestinal stromal tumor;Paragangliomas 3 (302 variants)
• Hereditary cancer-predisposing syndrome (296 variants)
• Paragangliomas 3;Gastrointestinal stromal tumor (171 variants)
• not provided (127 variants)
• not specified (58 variants)
• Hereditary pheochromocytoma-paraganglioma (36 variants)
• Gastrointestinal stromal tumor (36 variants)
• Paragangliomas 3 (34 variants)
• SDHC-related condition (9 variants)
• Pheochromocytoma (8 variants)
• Carney triad (3 variants)
• Carney-Stratakis syndrome (2 variants)
• Carney-Stratakis syndrome;Paragangliomas 3;Gastrointestinal stromal tumor (1 variants)
• Rhabdomyosarcoma (1 variants)
• Neuroblastoma (1 variants)
• Gastrointestinal stromal tumor;Carney-Stratakis syndrome;Paragangliomas 3 (1 variants)
• Ovarian cancer (1 variants)
• Gastrointestinal stromal tumor;Paragangliomas 3;Carney-Stratakis syndrome (1 variants)
• Malignant tumor of breast (1 variants)
• Paragangliomas 3;Carney-Stratakis syndrome;Gastrointestinal stromal tumor (1 variants)
• Charcot-Marie-Tooth, Intermediate (1 variants)
• Roussy-Lévy syndrome (1 variants)
• Carney-Stratakis syndrome;Gastrointestinal stromal tumor;Paragangliomas 3 (1 variants)
• Paragangliomas 3;Gastrointestinal stromal tumor;Carney-Stratakis syndrome (1 variants)
• Charcot-Marie-Tooth disease type 4E (1 variants)
• Charcot-Marie-Tooth disease, type I (1 variants)

Variants pathogenicity by type

Statistics on ClinVar variants can assist in determining whether a specific variant type in the SDHC gene is commonly pathogenic or not.

In the table, we include only reliable ClinVar variants with their consequences to MANE Select, Mane Plus Clinical transcripts, or transcripts with TSL equals 1. Click the count to view the source variants.

Warning: slight differences between displayed counts and the number of variants in ClinVar may occur, primarily due to (1) the application of a different transcript and/or consequence by our variant effect predictor or (2) differences in clinical significance: we classify Benign/Likely benign variants as Likely benign and Pathogenic/Likely pathogenic variants as Likely pathogenic.

Variant type	Pathogenic	Likely pathogenic	VUS	Likely benign	Benign	Sum
synonymous			1	79		80
missense	3	6	265	25		299
nonsense	6	3	2			11
start loss	4	1				5
frameshift	21		3			24
inframe indel			2			2
splice donor/acceptor (+/-2bp)	3	18	1			22
splice region			26	19		45
non coding			22	78	50	150
Total	37	28	296	182	50

Highest pathogenic variant AF is 0.0000197

Variants in SDHC

This is a list of pathogenic ClinVar variants found in the SDHC region.

You can filter this list by clicking the number of variants in the Variants pathogenicity by type table.

Position	Type	Phenotype	Significance	ClinVar
1-161314392-G-C		not specified	Likely benign (Aug 15, 2023)
1-161314392-G-T		Hereditary pheochromocytoma-paraganglioma	Uncertain significance (Aug 08, 2023)
1-161314394-C-G		Hereditary pheochromocytoma-paraganglioma	Uncertain significance (May 16, 2023)
1-161314401-C-A		Hereditary cancer-predisposing syndrome	Uncertain significance (Aug 19, 2022)
1-161314401-C-T		Hereditary cancer-predisposing syndrome	Uncertain significance (Feb 01, 2022)
1-161314402-C-G		Hereditary pheochromocytoma-paraganglioma	Uncertain significance (Apr 03, 2023)
1-161314402-C-T		Hereditary cancer-predisposing syndrome	Uncertain significance (Aug 11, 2017)
1-161314403-A-G		Hereditary cancer-predisposing syndrome	Uncertain significance (Mar 12, 2024)
1-161314405-G-A		Hereditary cancer-predisposing syndrome	Uncertain significance (Oct 04, 2023)
1-161314406-A-C		Gastrointestinal stromal tumor;Paragangliomas 3	Pathogenic (Dec 23, 2021)
1-161314406-A-G		Paragangliomas 3 • Hereditary cancer-predisposing syndrome • Gastrointestinal stromal tumor;Paragangliomas 3	Pathogenic (Feb 15, 2024)
1-161314406-A-T		Gastrointestinal stromal tumor;Paragangliomas 3 • Paragangliomas 3	Pathogenic (Dec 26, 2023)
1-161314407-T-C		Gastrointestinal stromal tumor;Paragangliomas 3	Pathogenic (Jan 09, 2023)
1-161314407-T-G		Paragangliomas 3;Gastrointestinal stromal tumor	Likely pathogenic (Oct 06, 2019)
1-161314408-G-A		Paragangliomas 3 • Gastrointestinal stromal tumor;Paragangliomas 3	Pathogenic (Feb 15, 2024)
1-161314409-G-A		Gastrointestinal stromal tumor;Paragangliomas 3 • Hereditary cancer-predisposing syndrome • Gastrointestinal stromal tumor	Uncertain significance (Aug 17, 2023)
1-161314409-G-C		Gastrointestinal stromal tumor;Paragangliomas 3	Uncertain significance (Apr 22, 2023)
1-161314410-C-G		Paragangliomas 3;Gastrointestinal stromal tumor • Hereditary cancer-predisposing syndrome	Uncertain significance (Dec 07, 2023)
1-161314410-C-T		Hereditary cancer-predisposing syndrome • Gastrointestinal stromal tumor;Paragangliomas 3	Uncertain significance (Nov 02, 2023)
1-161314410-CT-C		Carney triad • Hereditary cancer-predisposing syndrome	Pathogenic (May 08, 2013)
1-161314411-T-A		Gastrointestinal stromal tumor;Paragangliomas 3 • Hereditary pheochromocytoma-paraganglioma	Likely benign (Apr 14, 2023)
1-161314411-T-C		Gastrointestinal stromal tumor;Paragangliomas 3 • Hereditary cancer-predisposing syndrome • Hereditary pheochromocytoma-paraganglioma	Likely benign (Dec 18, 2023)
1-161314411-T-G		Paragangliomas 3;Gastrointestinal stromal tumor • Hereditary cancer-predisposing syndrome	Likely benign (Jul 15, 2023)
1-161314412-G-A		Gastrointestinal stromal tumor;Paragangliomas 3 • Hereditary cancer-predisposing syndrome • Gastrointestinal stromal tumor • Hereditary pheochromocytoma-paraganglioma	Uncertain significance (Feb 01, 2024)
1-161314412-G-C		Gastrointestinal stromal tumor;Paragangliomas 3	Uncertain significance (Apr 20, 2023)

GnomAD

Source: gnomAD

Gene	Type	Bio Type	Transcript	Coding Exons	Length
SDHC	protein_coding	protein_coding	ENST00000367975	6	48938

pLI Probability LOF Intolerant	pRec Probability LOF Recessive	Individuals with no LOFs	Individuals with Homozygous LOFs	Individuals with Heterozygous LOFs	Defined	p
0.000201	0.740	125675	0	21	125696	0.0000835

	Z-Score	Observed	Expected	Observed/Expected	Mutation Rate	Total Possible in Transcript
Missense	0.825	74	96.8	0.764	0.00000533	1081
Missense in Polyphen		18	29.002	0.62064		334
Synonymous	-0.165	37	35.7	1.04	0.00000191	355
Loss of Function	0.990	7	10.5	0.669	6.19e-7	107

LoF frequencies by population

Ethnicity	Sum of pLOFs	p
African & African-American	0.0000292	0.0000292
Ashkenazi Jewish	0.00	0.00
East Asian	0.0000544	0.0000544
Finnish	0.0000462	0.0000462
European (Non-Finnish)	0.000126	0.000123
Middle Eastern	0.0000544	0.0000544
South Asian	0.000131	0.000131
Other	0.00	0.00

dbNSFP

Source: dbNSFP

• Function: FUNCTION: Membrane-anchoring subunit of succinate dehydrogenase (SDH) that is involved in complex II of the mitochondrial electron transport chain and is responsible for transferring electrons from succinate to ubiquinone (coenzyme Q).
• Disease: DISEASE: Paragangliomas 3 (PGL3) [MIM:605373]: A neural crest tumor usually derived from the chromoreceptor tissue of a paraganglion. Paragangliomas can develop at various body sites, including the head, neck, thorax and abdomen. Most commonly, they are located in the head and neck region, specifically at the carotid bifurcation, the jugular foramen, the vagal nerve, and in the middle ear. {ECO:0000269|PubMed:11062460}. Note=The disease is caused by mutations affecting the gene represented in this entry.; DISEASE: Paraganglioma and gastric stromal sarcoma (PGGSS) [MIM:606864]: Gastrointestinal stromal tumors may be sporadic or inherited in an autosomal dominant manner, alone or as a component of a syndrome associated with other tumors, such as in the context of neurofibromatosis type 1 (NF1). Patients have both gastrointestinal stromal tumors and paragangliomas. Susceptibility to the tumors was inherited in an apparently autosomal dominant manner, with incomplete penetrance. {ECO:0000269|PubMed:17804857}. Note=The disease is caused by mutations affecting the gene represented in this entry.
• Pathway: Citrate cycle (TCA cycle) - Homo sapiens (human);Non-alcoholic fatty liver disease (NAFLD) - Homo sapiens (human);Alzheimer,s disease - Homo sapiens (human);Huntington,s disease - Homo sapiens (human);Thermogenesis - Homo sapiens (human);Oxidative phosphorylation - Homo sapiens (human);Parkinson,s disease - Homo sapiens (human);Warburg Effect;Mitochondrial Electron Transport Chain;The oncogenic action of Succinate;The oncogenic action of Fumarate;Pyruvate dehydrogenase deficiency (E3);Pyruvate dehydrogenase deficiency (E2);2-ketoglutarate dehydrogenase complex deficiency;Mitochondrial complex II deficiency;Fumarase deficiency;Congenital lactic acidosis;Citric Acid Cycle;Glutaminolysis and Cancer;The oncogenic action of 2-hydroxyglutarate;The oncogenic action of L-2-hydroxyglutarate in Hydroxygluaricaciduria;The oncogenic action of D-2-hydroxyglutarate in Hydroxygluaricaciduria ;Electron Transport Chain;TCA Cycle;Citrate cycle;Citric acid cycle (TCA cycle);Pyruvate metabolism and Citric Acid (TCA) cycle;Respiratory electron transport;The citric acid (TCA) cycle and respiratory electron transport;Metabolism;TCA cycle;TCA cycle;Arginine Proline metabolism;superpathway of conversion of glucose to acetyl CoA and entry into the TCA cycle;Tyrosine metabolism;Respiratory electron transport, ATP synthesis by chemiosmotic coupling, and heat production by uncoupling proteins. (Consensus)

Recessive Scores

• pRec: 0.354

Intolerance Scores

• loftool: 0.335
• rvis_EVS: 0.39
• rvis_percentile_EVS: 75.87

Haploinsufficiency Scores

• pHI: 0.216
• hipred: Y
• hipred_score: 0.553
• ghis: 0.413

Essentials

• essential_gene_CRISPR: N
• essential_gene_CRISPR2: N
• essential_gene_gene_trap: E
• gene_indispensability_pred: E
• gene_indispensability_score: 0.994

Gene Damage Prediction

	All	Recessive	Dominant
Mendelian	Medium	Medium	Medium
Primary Immunodeficiency	Medium	Medium	Medium
Cancer	Medium	Medium	Medium

Mouse Genome Informatics

• Gene name: Sdhc
• Phenotype: homeostasis/metabolism phenotype; mortality/aging (the observable characteristics related to the ability of a mammalian organism to live and age that are manifested throughout development and life span); hematopoietic system phenotype; skeleton phenotype

Gene ontology

• Biological process: tricarboxylic acid cycle;mitochondrial electron transport, succinate to ubiquinone;aerobic respiration;oxidation-reduction process
• Cellular component: mitochondrion;mitochondrial inner membrane;mitochondrial respiratory chain complex II, succinate dehydrogenase complex (ubiquinone);integral component of membrane;respiratory chain complex II
• Molecular function: succinate dehydrogenase (ubiquinone) activity;electron transfer activity;heme binding;metal ion binding