3-126733218-G-C

Variant names:

• chr3-126733218-G-C
• rs370004672
• NM_032343.3:c.407G>C

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_032343.3(CHCHD6):​c.407G>C​(p.Arg136Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,062 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R136W) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: CHCHD6 NM_032343.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.365
• Publications: 0 publications found

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]

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.1324043).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CHCHD6	NM_032343.3	c.407G>C	p.Arg136Pro	missense_variant	Exon 4 of 8	ENST00000290913.8	NP_115719.1
CHCHD6	NM_001320610.2	c.407G>C	p.Arg136Pro	missense_variant	Exon 4 of 8		NP_001307539.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CHCHD6	ENST00000290913.8	c.407G>C	p.Arg136Pro	missense_variant	Exon 4 of 8	1	NM_032343.3	ENSP00000290913.3

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461062 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 726764

African (AFR) AF: 0.00 AC: 0 AN: 33460

American (AMR) AF: 0.00 AC: 0 AN: 44614

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26114

East Asian (EAS) AF: 0.00 AC: 0 AN: 39674

South Asian (SAS) AF: 0.00 AC: 0 AN: 86048

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53376

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5700

European-Non Finnish (NFE) AF: 9.00e-7 AC: 1 AN: 1111712

Other (OTH) AF: 0.00 AC: 0 AN: 60364

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.14
BayesDel_addAF	Benign	-0.13	T
BayesDel_noAF	Benign	-0.43
CADD	Benign	13
DANN	Benign	0.86
DEOGEN2	Benign	0.033	T;.
Eigen	Benign	-0.95
Eigen_PC	Benign	-1.2
FATHMM_MKL	Benign	0.021	N
LIST_S2	Benign	0.54	T;T
M_CAP	Benign	0.0095	T
MetaRNN	Benign	0.13	T;T
MetaSVM	Benign	-1.0	T
PhyloP100		-0.36
PrimateAI	Benign	0.21	T
PROVEAN	Benign	-2.2	N;N
REVEL	Benign	0.21
Sift	Benign	0.083	T;T
Sift4G	Benign	0.062	T;D
Polyphen		0.94	P;.
Vest4		0.13
MutPred		0.54		Gain of loop (P = 0.002);Gain of loop (P = 0.002);
MVP		0.17
MPC		0.076
ClinPred		0.23	T
GERP RS		-3.9
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.39
gMVP		0.40
Mutation Taster		=79/21	polymorphism

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

Other links and lift over

dbSNP: rs370004672; hg19: chr3-126452061;