rs780977518

Positions:

• chr15-93002320-A-AATG

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP6_Moderate BS2

The NM_001271.4(CHD2):​c.4278+7_4278+9dup variant causes a splice donor region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000176 in 1,591,734 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Likely benign (★).

• Frequency:
  • Genomes: 𝑓 0.000026 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000017 (0 hom.)
• Consequence: CHD2 NM_001271.4 splice_donor_region, intron
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -0.267

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]

ACMG classification

Verdict is Likely_benign. Variant got -6 ACMG points.

• BP6: Variant 15-93002320-A-AATG is Benign according to our data. Variant chr15-93002320-A-AATG is described in ClinVar as [Likely_benign]. Clinvar id is 541369.Status of the report is criteria_provided_single_submitter, 1 stars.
• BS2: High AC in GnomAdExome4 at 24 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CHD2	NM_001271.4	c.4278+7_4278+9dup		splice_donor_region_variant, intron_variant		ENST00000394196.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CHD2	ENST00000394196.9	c.4278+7_4278+9dup		splice_donor_region_variant, intron_variant		5	NM_001271.4	P1
CHD2	ENST00000626874.2	c.4278+7_4278+9dup		splice_donor_region_variant, intron_variant		1
CHD2	ENST00000625662.3	c.*449+7_*449+9dup		splice_donor_region_variant, intron_variant, NMD_transcript_variant		5
CHD2	ENST00000629104.1	c.*511+7_*511+9dup		splice_donor_region_variant, intron_variant, NMD_transcript_variant		5

Frequencies

GnomAD3 genomes AF: 0.0000263 AC: 4 AN: 152220 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000829

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD3 exomes AF: 0.0000355 AC: 8 AN: 225090 Hom.: 0 AF XY: 0.0000328 AC XY: 4 AN XY: 122092

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.000319

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000167 AC: 24 AN: 1439396 Hom.: 0 Cov.: 31 AF XY: 0.0000210 AC XY: 15 AN XY: 715638

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.000235

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.0000840

GnomAD4 genome AF: 0.0000263 AC: 4 AN: 152338 Hom.: 0 Cov.: 32 AF XY: 0.0000403 AC XY: 3 AN XY: 74510

Gnomad4 AFR AF: 0.00

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.000830

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.00

Gnomad4 OTH AF: 0.00

Bravo AF: 0.00000378

Asia WGS AF: 0.00115 AC: 4 AN: 3478

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

Developmental and epileptic encephalopathy 94 Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Invitae

Sep 20, 2023

- -

Computational scores

Source: dbNSFP v4.3

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs780977518; hg19: chr15-93545550;