rs375790348

Variant names:

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BP4_StrongBS2

The NM_001362.4(DIO3):c.62C>T(p.Ser21Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000719 in 1,612,832 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 12/18 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00036 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00076 ( 1 hom. )

Consequence

DIO3
NM_001362.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.137

Variant links:

Genes affected

DIO3 (HGNC:2885): (iodothyronine deiodinase 3) The protein encoded by this intronless gene belongs to the iodothyronine deiodinase family. It catalyzes the inactivation of thyroid hormone by inner ring deiodination of the prohormone thyroxine (T4) and the bioactive hormone 3,3',5-triiodothyronine (T3) to inactive metabolites, 3,3',5'-triiodothyronine (RT3) and 3,3'-diiodothyronine (T2), respectively. This enzyme is highly expressed in pregnant uterus, placenta, fetal and neonatal tissues, and thought to prevent premature exposure of developing fetal tissues to adult levels of thyroid hormones. It regulates circulating fetal thyroid hormone concentrations, and thus plays a critical role in mammalian development. Knockout mice lacking this gene exhibit abnormalities related to development and reproduction, and increased activity of this enzyme in infants with hemangiomas causes severe hypothyroidism. This protein is a selenoprotein, containing the rare selenocysteine (Sec) amino acid at its active site. Sec is encoded by the UGA codon, which normally signals translation termination. The 3' UTRs of selenoprotein mRNAs contain a conserved stem-loop structure, designated the Sec insertion sequence (SECIS) element, that is necessary for the recognition of UGA as a Sec codon rather than as a stop signal. [provided by RefSeq, May 2016]

DIO3 links:

DIO3OS (HGNC:20348): (DIO3 opposite strand upstream RNA) The mouse and human DIO3OS and DIO3 (MIM 601038) genes overlap and are transcribed in opposite directions. The mouse Dio3 gene is imprinted from the paternal allele during fetal development, suggesting that DIO3OS is a noncoding gene that may have a role in maintaining monoallelic expression of DIO3 (Hernandez et al., 2004 [PubMed 14962667]).[supplied by OMIM, Mar 2008]

DIO3OS links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -8 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.018529981).

BS2

High AC in GnomAd4 at 55 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DIO3	NM_001362.4 link	c.62C>T	p.Ser21Leu	missense_variant	Exon 1 of 1		NP_001353.4	P55073Q86TU3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DIO3	ENST00000510508.5 link	c.62C>T	p.Ser21Leu	missense_variant	Exon 1 of 1	6		ENSP00000427336.3		P55073

Frequencies

GnomAD3 genomes

AF:

0.000361

AC:

AN:

152208

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000482

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.000188

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000750

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000346

AC:

AN:

245824

Hom.:

AF XY:

0.000365

AC XY:

AN XY:

134102

show subpopulations

Gnomad AFR exome

AF:

0.0000662

Gnomad AMR exome

AF:

0.0000291

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.000284

Gnomad NFE exome

AF:

0.000649

Gnomad OTH exome

AF:

0.000840

GnomAD4 exome

AF:

0.000756

AC:

1104

AN:

1460506

Hom.:

Cov.:

AF XY:

0.000771

AC XY:

560

AN XY:

726586

show subpopulations

Gnomad4 AFR exome

AF:

0.0000597

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.000305

Gnomad4 NFE exome

AF:

0.000956

Gnomad4 OTH exome

AF:

0.000348

GnomAD4 genome

AF:

0.000361

AC:

AN:

152326

Hom.:

Cov.:

AF XY:

0.000322

AC XY:

AN XY:

74492

show subpopulations

Gnomad4 AFR

AF:

0.0000481

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.000188

Gnomad4 NFE

AF:

0.000750

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000551

Hom.:

Bravo

AF:

0.000438

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000519

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000474

AC:

ExAC

AF:

0.000388

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.000600

EpiControl

AF:

0.000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jan 24, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.62C>T (p.S21L) alteration is located in exon 1 (coding exon 1) of the DIO3 gene. This alteration results from a C to T substitution at nucleotide position 62, causing the serine (S) at amino acid position 21 to be replaced by a leucine (L). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Benign

-0.51

BayesDel_noAF

Benign

-0.60

CADD

Benign

7.4

DANN

Benign

0.96

DEOGEN2

Benign

0.089

Eigen

Benign

-0.75

Eigen_PC

Benign

-0.84

FATHMM_MKL

Benign

0.13

LIST_S2

Benign

0.47

MetaRNN

Benign

0.019

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.69

PrimateAI

Uncertain

0.73

PROVEAN

Benign

-0.21

REVEL

Benign

0.021

Sift

Benign

0.26

Sift4G

Benign

0.18

Vest4

0.062

MVP

0.13

MPC

0.85

ClinPred

0.019

GERP RS

-1.3

Varity_R

0.043

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over