rs3808606

Positions:

• chr8-39911856-A-G
• chr8-39911856-A-T

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The ENST00000517623.1(ENSG00000253939):​n.256-7835T>C variant causes a intron, non coding transcript change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.582 in 152,032 control chromosomes in the GnomAD database, including 27,069 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.58 (27069 hom., cov: 32)
• Consequence: ENST00000517623.1 intron, non_coding_transcript
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.598

Genes affected

(HGNC:):

IDO1 (HGNC:6059): (indoleamine 2,3-dioxygenase 1) This gene encodes indoleamine 2,3-dioxygenase (IDO) - a heme enzyme that catalyzes the first and rate-limiting step in tryptophan catabolism to N-formyl-kynurenine. This enzyme acts on multiple tryptophan substrates including D-tryptophan, L-tryptophan, 5-hydroxy-tryptophan, tryptamine, and serotonin. This enzyme is thought to play a role in a variety of pathophysiological processes such as antimicrobial and antitumor defense, neuropathology, immunoregulation, and antioxidant activity. Through its expression in dendritic cells, monocytes, and macrophages this enzyme modulates T-cell behavior by its peri-cellular catabolization of the essential amino acid tryptophan.[provided by RefSeq, Feb 2011]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-1.03).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.763 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
	ENST00000517623.1	n.256-7835T>C		intron_variant, non_coding_transcript_variant		4

Frequencies

GnomAD3 genomes AF: 0.582 AC: 88434 AN: 151912 Hom.: 27027 Cov.: 32

Gnomad AFR AF: 0.770

Gnomad AMI AF: 0.573

Gnomad AMR AF: 0.493

Gnomad ASJ AF: 0.561

Gnomad EAS AF: 0.498

Gnomad SAS AF: 0.325

Gnomad FIN AF: 0.483

Gnomad MID AF: 0.570

Gnomad NFE AF: 0.529

Gnomad OTH AF: 0.582

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.582 AC: 88523 AN: 152032 Hom.: 27069 Cov.: 32 AF XY: 0.572 AC XY: 42481 AN XY: 74318

Gnomad4 AFR AF: 0.770

Gnomad4 AMR AF: 0.492

Gnomad4 ASJ AF: 0.561

Gnomad4 EAS AF: 0.499

Gnomad4 SAS AF: 0.325

Gnomad4 FIN AF: 0.483

Gnomad4 NFE AF: 0.529

Gnomad4 OTH AF: 0.577

Alfa AF: 0.534 Hom.: 42853

Bravo AF: 0.597

Asia WGS AF: 0.415 AC: 1444 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-1.0
CADD	Benign	0.23
DANN	Benign	0.29

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: rs3808606; hg19: chr8-39769375;