dbSNP rs61733156: SDHC:p.Phe118Phe (chr1-161356789-T-C) – ACMG Classification: Benign (-21 pts)

Variant summary

Our verdict is Benign. The variant received -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BS1BS2

The NM_003001.5(SDHC):c.354T>C(p.Phe118Phe) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000737 in 1,614,176 control chromosomes in the GnomAD database, including 8 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0041 ( 2 hom., cov: 31)

Exomes 𝑓: 0.00039 ( 6 hom. )

Consequence

SDHC
NM_003001.5 synonymous

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:15

Conservation

PhyloP100: -0.00200

Publications

5 publications found

Variant links:

Genes affected

SDHC (HGNC:10682): (succinate dehydrogenase complex subunit C) This gene encodes one of four nuclear-encoded subunits that comprise succinate dehydrogenase, also known as mitochondrial complex II, a key enzyme complex of the tricarboxylic acid cycle and aerobic respiratory chains of mitochondria. The encoded protein is one of two integral membrane proteins that anchor other subunits of the complex, which form the catalytic core, to the inner mitochondrial membrane. There are several related pseudogenes for this gene on different chromosomes. Mutations in this gene have been associated with paragangliomas. Alternatively spliced transcript variants have been described. [provided by RefSeq, May 2013]

SDHC Gene-Disease associations (from GenCC):

hereditary pheochromocytoma-paraganglioma
Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: ClinGen, Orphanet
pheochromocytoma/paraganglioma syndrome 3
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, G2P, Labcorp Genetics (formerly Invitae)
Carney-Stratakis syndrome
Inheritance: AD Classification: STRONG, SUPPORTIVE Submitted by: Genomics England PanelApp, Orphanet
gastrointestinal stromal tumor
Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae), Genomics England PanelApp
renal cell carcinoma
Inheritance: AD Classification: MODERATE Submitted by: Genomics England PanelApp
Cowden disease
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
mitochondrial disease
Inheritance: Unknown Classification: NO_KNOWN Submitted by: ClinGen

SDHC links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -21 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.71).

BP6

Variant 1-161356789-T-C is Benign according to our data. Variant chr1-161356789-T-C is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 165182.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=-0.002 with no splicing effect.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.0041 (625/152292) while in subpopulation AFR AF = 0.0146 (608/41562). AF 95% confidence interval is 0.0137. There are 2 homozygotes in GnomAd4. There are 285 alleles in the male GnomAd4 subpopulation. Median coverage is 31. This position passed quality control check.

BS2

High AC in GnomAd4 at 625 Unknown,AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_003001.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
SDHC	NM_003001.5	MANE Select	c.354T>C	p.Phe118Phe	synonymous	Exon 5 of 6	NP_002992.1	Q99643-1
SDHC	NM_001407115.1		c.474T>C	p.Phe158Phe	synonymous	Exon 6 of 7	NP_001394044.1
SDHC	NM_001407116.1		c.297T>C	p.Phe99Phe	synonymous	Exon 4 of 5	NP_001394045.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
SDHC	ENST00000367975.7	TSL:1 MANE Select	c.354T>C	p.Phe118Phe	synonymous	Exon 5 of 6	ENSP00000356953.3	Q99643-1
SDHC	ENST00000432287.6	TSL:1	c.252T>C	p.Phe84Phe	synonymous	Exon 4 of 5	ENSP00000390558.2	Q99643-3
SDHC	ENST00000392169.6	TSL:1	c.195T>C	p.Phe65Phe	synonymous	Exon 3 of 4	ENSP00000376009.2	Q99643-5

Frequencies

GnomAD3 genomes

AF:

0.00411

AC:

625

AN:

152174

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0147

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000524

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00335

GnomAD2 exomes

AF:

0.00103

AC:

256

AN:

249048

AF XY:

0.000838

show subpopulations

Gnomad AFR exome

AF:

0.0148

Gnomad AMR exome

AF:

0.000231

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000449

Gnomad OTH exome

AF:

0.000490

GnomAD4 exome

AF:

0.000386

AC:

565

AN:

1461884

Hom.:

Cov.:

AF XY:

0.000330

AC XY:

240

AN XY:

727248

show subpopulations

African (AFR)

AF:

0.0147

AC:

492

AN:

33480

American (AMR)

AF:

0.000358

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.0000383

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53420

Middle Eastern (MID)

AF:

0.00104

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00000629

AC:

AN:

1112002

Other (OTH)

AF:

0.000712

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.470

Heterozygous variant carriers

122

152

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

100

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00410

AC:

625

AN:

152292

Hom.:

Cov.:

AF XY:

0.00383

AC XY:

285

AN XY:

74474

show subpopulations

African (AFR)

AF:

0.0146

AC:

608

AN:

41562

American (AMR)

AF:

0.000523

AC:

AN:

15294

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5186

South Asian (SAS)

AF:

0.00

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10612

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000294

AC:

AN:

68024

Other (OTH)

AF:

0.00331

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.495

Heterozygous variant carriers

125

156

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00280

Hom.:

Bravo

AF:

0.00441

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

ClinVar submissions

Significance:Benign/Likely benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

not specified (5)

not provided (3)

Pheochromocytoma/paraganglioma syndrome 3 (2)

Cowden syndrome;C1708353:Hereditary pheochromocytoma-paraganglioma (1)

Gastrointestinal stromal tumor;C1854336:Pheochromocytoma/paraganglioma syndrome 3 (1)

Hereditary cancer-predisposing syndrome (1)

Hereditary pheochromocytoma-paraganglioma (1)

SDHC-related disorder (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.71

CADD

Benign

8.2

(source)

DANN

Benign

0.62

PhyloP100

-0.0020

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Mutation Taster

=99/1

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over