chr22-23766188-T-A

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2BP4

The NM_213720.3(CHCHD10):c.349A>T(p.Ser117Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,460,438 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 (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. S117N) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 30)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

CHCHD10
NM_213720.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 0.624

Publications

0 publications found

Variant links:

Genes affected

CHCHD10 (HGNC:15559): (coiled-coil-helix-coiled-coil-helix domain containing 10) This gene encodes a mitochondrial protein that is enriched at cristae junctions in the intermembrane space. It may play a role in cristae morphology maintenance or oxidative phosphorylation. Mutations in this gene cause frontotemporal dementia and/or amyotrophic lateral sclerosis-2. Alternative splicing of this gene results in multiple transcript variants. Related pseudogenes have been identified on chromosomes 7 and 19. [provided by RefSeq, Aug 2014]

CHCHD10 Gene-Disease associations (from GenCC):

mitochondrial disease
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
autosomal dominant mitochondrial myopathy with exercise intolerance
Inheritance: AD Classification: STRONG, SUPPORTIVE, LIMITED Submitted by: Orphanet, Genomics England PanelApp, Labcorp Genetics (formerly Invitae)
frontotemporal dementia and/or amyotrophic lateral sclerosis 2
Inheritance: AD Classification: STRONG, MODERATE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), ClinGen
lower motor neuron syndrome with late-adult onset
Inheritance: AD Classification: STRONG, SUPPORTIVE Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae), Orphanet
amyotrophic lateral sclerosis
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
frontotemporal dementia with motor neuron disease
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

CHCHD10 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.3296717).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CHCHD10	NM_213720.3 link	c.349A>T	p.Ser117Cys	missense_variant	Exon 3 of 4	ENST00000484558.3	NP_998885.1	Q8WYQ3
CHCHD10	NM_001301339.2 link	c.370A>T	p.Ser124Cys	missense_variant	Exon 3 of 4		NP_001288268.1	Q8WYQ3B5MBW9
CHCHD10	NR_125755.2 link	n.394A>T		non_coding_transcript_exon_variant	Exon 3 of 4
CHCHD10	NR_125756.2 link	n.227A>T		non_coding_transcript_exon_variant	Exon 2 of 3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CHCHD10	ENST00000484558.3 link	c.349A>T	p.Ser117Cys	missense_variant	Exon 3 of 4	1	NM_213720.3	ENSP00000418428.3		Q8WYQ3

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1460438

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

726418

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33442

American (AMR)

AF:

0.00

AC:

AN:

44540

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26090

East Asian (EAS)

AF:

0.00

AC:

AN:

39648

South Asian (SAS)

AF:

0.00

AC:

AN:

86008

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53258

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5752

European-Non Finnish (NFE)

AF:

0.00000180

AC:

AN:

1111378

Other (OTH)

AF:

0.00

AC:

AN:

60322

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.450

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome 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

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Frontotemporal dementia and/or amyotrophic lateral sclerosis 2

Uncertain:1

Oct 20, 2021

Institute of Human Genetics, University of Leipzig Medical Center

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

_x000D_ Criteria applied: PS4_SUP, PM2_SUP, PP3 -

Lower motor neuron syndrome with late-adult onset;C4014648:Frontotemporal dementia and/or amyotrophic lateral sclerosis 2;C4015513:Autosomal dominant mitochondrial myopathy with exercise intolerance

Uncertain:1

Apr 18, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces serine, which is neutral and polar, with cysteine, which is neutral and slightly polar, at codon 117 of the CHCHD10 protein (p.Ser117Cys). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with CHCHD10-related conditions. ClinVar contains an entry for this variant (Variation ID: 473426). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.57

BayesDel_addAF

Benign

-0.13

BayesDel_noAF

Benign

-0.19

CADD

Uncertain

(source)

DANN

Benign

0.92

Eigen

Uncertain

0.38

Eigen_PC

Uncertain

0.28

FATHMM_MKL

Uncertain

0.82

LIST_S2

Benign

0.45

M_CAP

Uncertain

0.094

MetaRNN

Benign

0.33

MetaSVM

Uncertain

0.21

PhyloP100

0.62

PROVEAN

Pathogenic

-6.0

REVEL

Benign

0.13

Vest4

0.34

MutPred

0.26

Loss of MoRF binding (P = 0.0028);

MVP

0.19

ClinPred

0.96

GERP RS

3.3

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.24

Mutation Taster

=45/55

disease causing

(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

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over