Genetic Variant CHD9:p.Arg178Cys (chr16-53156621-C-T) – ACMG Classification: Likely_benign (-5 pts)

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 0P and 5B. BP4BS2

The NM_001308319.2(CHD9):c.532C>T(p.Arg178Cys) variant causes a missense change. The variant allele was found at a frequency of 0.0000316 in 1,613,790 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 (★).

Frequency

Genomes: 𝑓 0.000059 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000029 ( 0 hom. )

Consequence

CHD9
NM_001308319.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.89

Variant links:

Genes affected

CHD9 (HGNC:25701): (chromodomain helicase DNA binding protein 9) Predicted to enable ATP binding activity; ATP-dependent activity, acting on DNA; and DNA binding activity. Predicted to be involved in DNA duplex unwinding and chromatin organization. Located in cytosol and nucleoplasm. [provided by Alliance of Genome Resources, Apr 2022]

CHD9 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -5 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.40731132).

BS2

High AC in GnomAd4 at 9 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CHD9	NM_001308319.2 link	c.532C>T	p.Arg178Cys	missense_variant	Exon 2 of 39	ENST00000447540.6	NP_001295248.1	Q3L8U1-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CHD9	ENST00000447540.6 link	c.532C>T	p.Arg178Cys	missense_variant	Exon 2 of 39	5	NM_001308319.2	ENSP00000396345.2		Q3L8U1-1

Frequencies

GnomAD3 genomes

AF:

0.0000591

AC:

AN:

152228

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000145

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

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:

0.00

GnomAD3 exomes

AF:

0.0000201

AC:

AN:

248846

Hom.:

AF XY:

0.0000370

AC XY:

AN XY:

134994

show subpopulations

Gnomad AFR exome

AF:

0.0000646

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000355

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000287

AC:

AN:

1461562

Hom.:

Cov.:

AF XY:

0.0000344

AC XY:

AN XY:

727088

show subpopulations

Gnomad4 AFR exome

AF:

0.0000597

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000232

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000324

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000591

AC:

AN:

152228

Hom.:

Cov.:

AF XY:

0.0000941

AC XY:

AN XY:

74372

show subpopulations

Gnomad4 AFR

AF:

0.000145

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000831

Hom.:

Bravo

AF:

0.0000378

ESP6500AA

AF:

0.000265

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000331

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.000119

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Apr 29, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.532C>T (p.R178C) alteration is located in exon 2 (coding exon 1) of the CHD9 gene. This alteration results from a C to T substitution at nucleotide position 532, causing the arginine (R) at amino acid position 178 to be replaced by a cysteine (C). 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

0.083

BayesDel_addAF

Benign

-0.017

BayesDel_noAF

Uncertain

-0.080

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.079

T;.;T;.;T

Eigen

Uncertain

0.52

Eigen_PC

Uncertain

0.59

FATHMM_MKL

Uncertain

0.96

LIST_S2

Uncertain

0.95

D;.;D;D;.

M_CAP

Benign

0.041

MetaRNN

Benign

0.41

T;T;T;T;T

MetaSVM

Uncertain

0.38

MutationAssessor

Benign

0.69

N;N;.;N;N

PrimateAI

Benign

0.35

PROVEAN

Benign

-1.8

N;N;N;N;N

REVEL

Uncertain

0.49

Sift

Uncertain

0.0020

D;D;D;D;D

Sift4G

Benign

0.068

T;T;D;T;T

Polyphen

0.97

D;D;.;D;D

Vest4

0.14

MVP

0.64

MPC

0.34

ClinPred

0.69

GERP RS

5.9

Varity_R

0.17

gMVP

0.36

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