chr1-154583016-T-C

Position:

• chr1-154583016-T-C

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_Strong BP6_Very_Strong BA1

The NM_001111.5(ADAR):​c.*1790A>G variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.604 in 152,182 control chromosomes in the GnomAD database, including 29,847 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

• Frequency:
  • Genomes: 𝑓 0.60 (29844 hom., cov: 32)
  • Exomes 𝑓: 0.88 (3 hom.)
• Consequence: ADAR NM_001111.5 3_prime_UTR
• Clinical Significance: Benign criteria provided, multiple submitters, no conflicts B:2
• Conservation: PhyloP100: 0.551

Genes affected

ADAR (HGNC:225): (adenosine deaminase RNA specific) This gene encodes the enzyme responsible for RNA editing by site-specific deamination of adenosines. This enzyme destabilizes double-stranded RNA through conversion of adenosine to inosine. Mutations in this gene have been associated with dyschromatosis symmetrica hereditaria. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2010]

ACMG classification

Verdict is Benign. Variant got -20 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.86).
• BP6: Variant 1-154583016-T-C is Benign according to our data. Variant chr1-154583016-T-C is described in ClinVar as [Benign]. Clinvar id is 292717.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BA1: GnomAd4 highest subpopulation (SAS) allele frequency at 95% confidence interval = 0.746 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ADAR	NM_001111.5	c.*1790A>G		3_prime_UTR_variant	15/15	ENST00000368474.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ADAR	ENST00000368474.9	c.*1790A>G		3_prime_UTR_variant	15/15	1	NM_001111.5	P3

Frequencies

GnomAD3 genomes AF: 0.604 AC: 91914 AN: 152056 Hom.: 29835 Cov.: 32

Gnomad AFR AF: 0.343

Gnomad AMI AF: 0.664

Gnomad AMR AF: 0.724

Gnomad ASJ AF: 0.732

Gnomad EAS AF: 0.705

Gnomad SAS AF: 0.765

Gnomad FIN AF: 0.652

Gnomad MID AF: 0.678

Gnomad NFE AF: 0.702

Gnomad OTH AF: 0.628

GnomAD4 exome AF: 0.875 AC: 7 AN: 8 Hom.: 3 Cov.: 0 AF XY: 0.833 AC XY: 5 AN XY: 6

Gnomad4 NFE exome AF: 0.875

GnomAD4 genome AF: 0.604 AC: 91935 AN: 152174 Hom.: 29844 Cov.: 32 AF XY: 0.609 AC XY: 45292 AN XY: 74392

Gnomad4 AFR AF: 0.342

Gnomad4 AMR AF: 0.725

Gnomad4 ASJ AF: 0.732

Gnomad4 EAS AF: 0.705

Gnomad4 SAS AF: 0.767

Gnomad4 FIN AF: 0.652

Gnomad4 NFE AF: 0.702

Gnomad4 OTH AF: 0.623

Alfa AF: 0.638 Hom.: 4771

Bravo AF: 0.600

ClinVar

Significance: Benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Benign:1

Benign, criteria provided, single submitter

not provided

Breakthrough Genomics, Breakthrough Genomics

-

- -

Symmetrical dyschromatosis of extremities Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.86
CADD	Benign	1.4
DANN	Benign	0.57
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1

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

Publications

LitVar

Other links and lift over

dbSNP: rs1127326; hg19: chr1-154555492;