rs531251618

Variant names:

• chr15-92946064-A-C
• rs531251618
• NM_001271.4:c.1225A>C

Your query was ambiguous. Multiple possible variants found:

• chr15-92946064-A-C
• chr15-92946064-A-G
• chr15-92946064-A-T

Variant summary

Our verdict is Benign. The variant received -7 ACMG points: 0P and 7B. BP4 BP6_Moderate BS2

The NM_001271.4(CHD2):​c.1225A>C​(p.Asn409His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000145 in 1,444,854 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 Likely benign (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. N409Y) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.000015 (0 hom.)
• Consequence: CHD2 NM_001271.4 missense
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 3.53
• Publications: 2 publications found

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

ACMG classification

Our verdict: Benign. The variant received -7 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.3408516).
• BP6: Variant 15-92946064-A-C is Benign according to our data. Variant chr15-92946064-A-C is described in ClinVar as Likely_benign. ClinVar VariationId is 474374.Status of the report is criteria_provided_single_submitter, 1 stars.
• BS2: High AC in GnomAdExome4 at 21 Unknown,AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CHD2	NM_001271.4	c.1225A>C	p.Asn409His	missense_variant	Exon 12 of 39	ENST00000394196.9	NP_001262.3
CHD2	NM_001042572.3	c.1225A>C	p.Asn409His	missense_variant	Exon 12 of 13		NP_001036037.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CHD2	ENST00000394196.9	c.1225A>C	p.Asn409His	missense_variant	Exon 12 of 39	5	NM_001271.4	ENSP00000377747.4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.0000122 AC: 3 AN: 245832 AF XY: 0.0000226

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.000110

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000145 AC: 21 AN: 1444854 Hom.: 0 Cov.: 31 AF XY: 0.0000195 AC XY: 14 AN XY: 717374

African (AFR) AF: 0.00 AC: 0 AN: 32992

American (AMR) AF: 0.00 AC: 0 AN: 43026

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25564

East Asian (EAS) AF: 0.0000506 AC: 2 AN: 39510

South Asian (SAS) AF: 0.000108 AC: 9 AN: 83368

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 52810

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5656

European-Non Finnish (NFE) AF: 0.00000726 AC: 8 AN: 1102308

Other (OTH) AF: 0.0000335 AC: 2 AN: 59620

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000756

ExAC AF: 0.0000165 AC: 2

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

Developmental and epileptic encephalopathy 94 Benign:1

Jul 22, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.094
BayesDel_addAF	Benign	-0.18	T
BayesDel_noAF	Benign	-0.27
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Benign	0.32	.;T;T;.;T;T
Eigen	Uncertain	0.65
Eigen_PC	Uncertain	0.62
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.92	D;D;D;D;D;D
M_CAP	Benign	0.051	D
MetaRNN	Benign	0.34	T;T;T;T;T;T
MetaSVM	Uncertain	0.091	D
MutationAssessor	Uncertain	2.8	M;M;.;M;.;.
PhyloP100		3.5
PrimateAI	Uncertain	0.66	T
PROVEAN	Benign	-1.4	.;N;.;N;.;.
REVEL	Uncertain	0.35
Sift	Benign	0.032	.;D;.;T;.;.
Sift4G	Benign	0.19	T;T;T;T;T;.
Polyphen		0.99	D;D;.;.;D;.
Vest4		0.60
MutPred		0.46		Loss of solvent accessibility (P = 0.1744);Loss of solvent accessibility (P = 0.1744);.;Loss of solvent accessibility (P = 0.1744);.;.;
MVP		0.77
MPC		0.67
ClinPred		0.23	T
GERP RS		5.2
RBP_binding_hub_radar		1.1
RBP_regulation_power_radar		2.8
Varity_R		0.13
gMVP		0.37
Mutation Taster		=79/21	polymorphism

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs531251618; hg19: chr15-93489294;