dbSNP rs139534358: CHD2:p.Ala1683Ala (chr15-93020154-C-T) – ACMG Classification: Benign (-15 pts)

Variant summary

Our verdict is Benign. The variant received -15 ACMG points: 0P and 15B. BP4_ModerateBP6_Very_StrongBP7BS2

The NM_001271.4(CHD2):c.5049C>T(p.Ala1683Ala) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0018 in 1,613,968 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0012 ( 1 hom., cov: 32)

Exomes 𝑓: 0.0019 ( 2 hom. )

Consequence

CHD2
NM_001271.4 synonymous

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:5

Conservation

PhyloP100: -0.0310

Publications

2 publications found

Variant links:

Genes affected

CHD2 (HGNC:1917): (chromodomain helicase DNA binding protein 2) The CHD family of proteins is characterized by the presence of chromo (chromatin organization modifier) domains and SNF2-related helicase/ATPase domains. CHD genes alter gene expression possibly by modification of chromatin structure thus altering access of the transcriptional apparatus to its chromosomal DNA template. Alternatively spliced transcript variants encoding distinct isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

CHD2 Gene-Disease associations (from GenCC):

complex neurodevelopmental disorder
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
developmental and epileptic encephalopathy 94
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae)
Lennox-Gastaut syndrome
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
myoclonic-astatic epilepsy
Inheritance: Unknown Classification: SUPPORTIVE Submitted by: Orphanet

CHD2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -15 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.32).

BP6

Variant 15-93020154-C-T is Benign according to our data. Variant chr15-93020154-C-T is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 384954.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=-0.031 with no splicing effect.

BS2

High AC in GnomAd4 at 185 Unknown,AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001271.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CHD2	NM_001271.4	MANE Select	c.5049C>T	p.Ala1683Ala	synonymous	Exon 38 of 39	NP_001262.3	O14647-1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
CHD2	ENST00000394196.9	TSL:5 MANE Select	c.5049C>T	p.Ala1683Ala	synonymous	Exon 38 of 39	ENSP00000377747.4	O14647-1
CHD2	ENST00000626874.2	TSL:1	c.5049C>T	p.Ala1683Ala	synonymous	Exon 38 of 38	ENSP00000486629.1	O14647-2
CHD2	ENST00000625662.3	TSL:5	n.*1220C>T		non_coding_transcript_exon	Exon 34 of 35	ENSP00000486007.2	A0A0D9SEU0

Frequencies

GnomAD3 genomes

AF:

0.00120

AC:

182

AN:

151964

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000629

Gnomad AMI

AF:

0.00439

Gnomad AMR

AF:

0.00118

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00187

Gnomad FIN

AF:

0.0000944

Gnomad MID

AF:

0.00633

Gnomad NFE

AF:

0.00171

Gnomad OTH

AF:

0.00288

GnomAD2 exomes

AF:

0.00128

AC:

321

AN:

251468

AF XY:

0.00134

show subpopulations

Gnomad AFR exome

AF:

0.000492

Gnomad AMR exome

AF:

0.00119

Gnomad ASJ exome

AF:

0.0000992

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0000924

Gnomad NFE exome

AF:

0.00178

Gnomad OTH exome

AF:

0.00228

GnomAD4 exome

AF:

0.00186

AC:

2724

AN:

1461886

Hom.:

Cov.:

AF XY:

0.00190

AC XY:

1379

AN XY:

727246

show subpopulations

African (AFR)

AF:

0.000597

AC:

AN:

33480

American (AMR)

AF:

0.00125

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.0000765

AC:

AN:

26136

East Asian (EAS)

AF:

0.000252

AC:

AN:

39700

South Asian (SAS)

AF:

0.00155

AC:

134

AN:

86258

European-Finnish (FIN)

AF:

0.000243

AC:

AN:

53416

Middle Eastern (MID)

AF:

0.000693

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00215

AC:

2386

AN:

1112010

Other (OTH)

AF:

0.00164

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.474

Heterozygous variant carriers

180

360

541

721

901

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

192

288

384

480

<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

AF:

0.00122

AC:

185

AN:

152082

Hom.:

Cov.:

AF XY:

0.00118

AC XY:

AN XY:

74358

show subpopulations

African (AFR)

AF:

0.000699

AC:

AN:

41470

American (AMR)

AF:

0.00118

AC:

AN:

15286

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5174

South Asian (SAS)

AF:

0.00188

AC:

AN:

4798

European-Finnish (FIN)

AF:

0.0000944

AC:

AN:

10592

Middle Eastern (MID)

AF:

0.00680

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00171

AC:

116

AN:

67982

Other (OTH)

AF:

0.00285

AC:

AN:

2102

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.503

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome 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

Alfa

AF:

0.00163

Hom.:

Bravo

AF:

0.00117

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

ClinVar submissions

Significance:Benign/Likely benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (3)

Developmental and epileptic encephalopathy 94 (1)

Inborn genetic diseases (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.32

CADD

Benign

9.9

(source)

DANN

Benign

0.76

PhyloP100

-0.031

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Mutation Taster

=100/0

polymorphism

(source)

Splicing

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

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over