NM_000681.4:c.104G>C

Variant names:

• chr10-111078100-G-C
• rs999050821
• NM_000681.4:c.104G>C

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_000681.4(ADRA2A):​c.104G>C​(p.Gly35Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 14/20 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G35R) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 33)
• Consequence: ADRA2A NM_000681.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.69
• Publications: 0 publications found

Genes affected

ADRA2A (HGNC:281): (adrenoceptor alpha 2A) Alpha-2-adrenergic receptors are members of the G protein-coupled receptor superfamily. The alpha-2-adrenergic receptors are a type of adrenergic receptors (for adrenaline or epinephrine), which inhibit adenylate cyclase. These receptors include 3 highly homologous subtypes: alpha2A, alpha2B, and alpha2C. They are involved in regulating the release of neurotransmitter molecules from sympathetic nerves and from adrenergic neurons in the central nervous system. The sympathetic nervous system regulates cardiovascular function by activating adrenergic receptors in the heart, blood vessels and kidney. Studies in mouse revealed that both the alpha2A and alpha2C receptor subtypes were required for presynaptic transmitter release from the sympathetic nervous system in the heart and from central noradrenergic neurons. The alpha-2-adrenergic receptors are also involved in catecholamine signaling by extracellular regulated protein kinase 1 and 2 (ERK1/2) pathways. A clear association between the alpha-2-adrenergic receptor and disease has not been yet established. [provided by RefSeq, Sep 2019]

ADRA2A Gene-Disease associations (from GenCC):

• lipodystrophy

  Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics
• lipodystrophy, familial partial, type 8

  Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.20391497).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000681.4. 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
	ADRA2A	NM_000681.4	MANE Select	c.104G>C	p.Gly35Ala	missense	Exon 1 of 1	NP_000672.3

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ADRA2A	ENST00000280155.4	TSL:6 MANE Select	c.104G>C	p.Gly35Ala	missense	Exon 1 of 1	ENSP00000280155.2	P08913

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 33

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000680

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.071
BayesDel_addAF	Benign	-0.095	T
BayesDel_noAF	Benign	-0.37
CADD	Benign	21
DANN	Benign	0.96
Eigen	Benign	0.092
Eigen_PC	Benign	0.19
FATHMM_MKL	Uncertain	0.88	D
M_CAP	Benign	0.014	T
MetaRNN	Benign	0.20	T
MetaSVM	Benign	-1.1	T
PhyloP100		2.7
PrimateAI	Uncertain	0.58	T
PROVEAN	Benign	-0.63	N
REVEL	Benign	0.11
Sift	Benign	0.050	D
Sift4G	Benign	0.70	T
Vest4		0.33
MVP		0.38
ClinPred		0.48	T
GERP RS		4.6
gMVP		0.39
Mutation Taster		=89/11	polymorphism

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

Other links and lift over

dbSNP: rs999050821; hg19: chr10-112837858;