chr2-96115251-T-TCCTCTTCCC

Variant names:

• chr2-96115251-T-TCCTCTTCCC
• rs1332297745
• NM_000682.7:c.898_899insGGGAAGAGG

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2 BP3

The NM_000682.7(ADRA2B):​c.898_899insGGGAAGAGG​(p.Glu299_Glu300insGlyGluGlu) variant causes a conservative inframe insertion change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: ADRA2B NM_000682.7 conservative_inframe_insertion
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.01
• Publications: 0 publications found

Genes affected

ADRA2B (HGNC:282): (adrenoceptor alpha 2B) This intronless gene encodes a seven-pass transmembrane protein. This protein is a member of a subfamily of G protein-coupled receptors that regulate neurotransmitter release from sympathetic nerves and from adrenergic neurons in the central nervous system. [provided by RefSeq, Apr 2014]

ADRA2B Gene-Disease associations (from GenCC):

• benign adult familial myoclonic epilepsy

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• neurodevelopmental disorder

  Inheritance: AR Classification: LIMITED Submitted by: G2P
• epilepsy, familial adult myoclonic, 2

  Inheritance: Unknown Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)
• epilepsy

  Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

ACMG classification

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP3: Nonframeshift variant in repetitive region in NM_000682.7

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000682.7. 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
	ADRA2B	NM_000682.7	MANE Select	c.898_899insGGGAAGAGG	p.Glu299_Glu300insGlyGluGlu	conservative_inframe_insertion	Exon 1 of 1	NP_000673.2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ADRA2B	ENST00000620793.2	TSL:6 MANE Select	c.898_899insGGGAAGAGG	p.Glu299_Glu300insGlyGluGlu	conservative_inframe_insertion	Exon 1 of 1	ENSP00000480573.1	P18089

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD2 exomes AF: 0.00000574 AC: 1 AN: 174346 AF XY: 0.0000107

Gnomad AFR exome AF: 0.000104

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome Cov.: 40

GnomAD4 genome Cov.: 33

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	Epilepsy, familial adult myoclonic, 2 (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		1.0

Splicing

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

Other links and lift over

dbSNP: rs1332297745; hg19: chr2-96780990;