Genetic Variant CHCHD5:p.Leu87Arg (chr2-112586316-T-G) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_032309.4(CHCHD5):c.260T>G(p.Leu87Arg) variant causes a missense change. The variant allele was found at a frequency of 0.0000041 in 1,461,888 control chromosomes in the GnomAD database, with no homozygous occurrence. 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. L87P) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000041 ( 0 hom. )

Consequence

CHCHD5
NM_032309.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 6.09

Variant links:

Genes affected

CHCHD5 (HGNC:17840): (coiled-coil-helix-coiled-coil-helix domain containing 5) Predicted to be located in mitochondrial intermembrane space. [provided by Alliance of Genome Resources, Apr 2022]

CHCHD5 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CHCHD5	NM_032309.4 link	c.260T>G	p.Leu87Arg	missense_variant	Exon 3 of 4	ENST00000324913.10	NP_115685.1	Q9BSY4-1A0A2U9EWT9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CHCHD5	ENST00000324913.10 link	c.260T>G	p.Leu87Arg	missense_variant	Exon 3 of 4	1	NM_032309.4	ENSP00000325655.5		Q9BSY4-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000199

AC:

AN:

251316

Hom.:

AF XY:

0.0000147

AC XY:

AN XY:

135864

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000272

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000410

AC:

AN:

1461888

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

727248

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000126

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

Cov.:

ExAC

AF:

0.0000247

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jun 16, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.260T>G (p.L87R) alteration is located in exon 3 (coding exon 3) of the CHCHD5 gene. This alteration results from a T to G substitution at nucleotide position 260, causing the leucine (L) at amino acid position 87 to be replaced by an arginine (R). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.55

BayesDel_addAF

Benign

-0.035

BayesDel_noAF

Uncertain

0.0

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.037

T;.

Eigen

Uncertain

0.54

Eigen_PC

Uncertain

0.53

FATHMM_MKL

Uncertain

0.97

LIST_S2

Uncertain

0.86

D;D

M_CAP

Uncertain

0.12

MetaRNN

Uncertain

0.73

D;D

MetaSVM

Uncertain

-0.12

MutationAssessor

Uncertain

2.1

M;M

PrimateAI

Uncertain

0.65

PROVEAN

Benign

-2.0

N;N

REVEL

Uncertain

0.34

Sift

Uncertain

0.0030

D;D

Polyphen

1.0

D;.

Vest4

0.75

MutPred

0.57

Gain of MoRF binding (P = 0.0158);Gain of MoRF binding (P = 0.0158);

MVP

0.78

MPC

0.16

ClinPred

0.74

GERP RS

4.5

Varity_R

0.49

gMVP

0.78

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over