Genetic Variant NM_032343.3:c.634C>A (chr3-126957483-C-A) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_032343.3(CHCHD6):c.634C>A(p.Pro212Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000687 in 1,454,642 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict 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. P212L) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

CHCHD6
NM_032343.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.0290

Publications

0 publications found

Variant links:

Genes affected

CHCHD6 (HGNC:28184): (coiled-coil-helix-coiled-coil-helix domain containing 6) Involved in cellular response to DNA damage stimulus and cristae formation. Located in cytosol and mitochondrial inner membrane. Part of MICOS complex. [provided by Alliance of Genome Resources, Apr 2022]

CHCHD6 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.049867123).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CHCHD6	NM_032343.3 link	c.634C>A	p.Pro212Thr	missense_variant	Exon 7 of 8	ENST00000290913.8	NP_115719.1	Q9BRQ6
CHCHD6	NM_001320610.2 link	c.637C>A	p.Pro213Thr	missense_variant	Exon 7 of 8		NP_001307539.1	Q9BRQ6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CHCHD6	ENST00000290913.8 link	c.634C>A	p.Pro212Thr	missense_variant	Exon 7 of 8	1	NM_032343.3	ENSP00000290913.3		Q9BRQ6

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.87e-7

AC:

AN:

1454642

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

722900

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33280

American (AMR)

AF:

0.00

AC:

AN:

44044

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25976

East Asian (EAS)

AF:

0.00

AC:

AN:

39222

South Asian (SAS)

AF:

0.00

AC:

AN:

84594

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52714

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5762

European-Non Finnish (NFE)

AF:

9.02e-7

AC:

AN:

1108952

Other (OTH)

AF:

0.00

AC:

AN:

60098

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Nov 09, 2021

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.634C>A (p.P212T) alteration is located in exon 7 (coding exon 7) of the CHCHD6 gene. This alteration results from a C to A substitution at nucleotide position 634, causing the proline (P) at amino acid position 212 to be replaced by a threonine (T). 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

Benign

0.098

BayesDel_addAF

Benign

-0.14

BayesDel_noAF

Benign

-0.43

CADD

Benign

7.3

(source)

DANN

Benign

0.93

DEOGEN2

Benign

0.0015

T;.

Eigen

Benign

-0.92

Eigen_PC

Benign

-0.97

FATHMM_MKL

Benign

0.065

LIST_S2

Benign

0.41

T;T

M_CAP

Benign

0.017

MetaRNN

Benign

0.050

T;T

MetaSVM

Benign

-1.0

PhyloP100

-0.029

PrimateAI

Benign

0.27

PROVEAN

Benign

-0.14

N;N

REVEL

Benign

0.043

Sift

Benign

0.22

T;T

Sift4G

Benign

0.57

T;T

Polyphen

0.062

B;.

Vest4

0.35

MutPred

0.33

Loss of sheet (P = 0.0126);.;

MVP

0.15

MPC

0.055

ClinPred

0.029

GERP RS

-0.24

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.062

gMVP

0.26

Mutation Taster

=97/3

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

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over