rs775024028

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 1P and 2B. PP2BP4_Moderate

The NM_177438.3(DICER1):c.4838A>T(p.Gln1613Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000821 in 1,461,894 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. Q1613R) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000082 ( 0 hom. )

Consequence

DICER1
NM_177438.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:4

Conservation

PhyloP100: 1.24

Variant links:

Genes affected

DICER1 (HGNC:17098): (dicer 1, ribonuclease III) This gene encodes a protein possessing an RNA helicase motif containing a DEXH box in its amino terminus and an RNA motif in the carboxy terminus. The encoded protein functions as a ribonuclease and is required by the RNA interference and small temporal RNA (stRNA) pathways to produce the active small RNA component that represses gene expression. This protein also acts as a strong antiviral agent with activity against RNA viruses, including the Zika and SARS-CoV-2 viruses. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2021]

DICER1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -1 ACMG points.

PP2

Missense variant where missense usually causes diseases, DICER1

BP4

Computational evidence support a benign effect (MetaRNN=0.17480084).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
DICER1	NM_177438.3 linkuse as main transcript	c.4838A>T	p.Gln1613Leu	missense_variant	23/27	ENST00000343455.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
DICER1	ENST00000343455.8 linkuse as main transcript	c.4838A>T	p.Gln1613Leu	missense_variant	23/27	1	NM_177438.3	P1	Q9UPY3-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000398

AC:

AN:

251360

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135846

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000880

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000821

AC:

AN:

1461894

Hom.:

Cov.:

AF XY:

0.00000825

AC XY:

AN XY:

727248

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000989

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

Cov.:

Bravo

AF:

0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:4

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Global developmental delay - lung cysts - overgrowth - Wilms tumor syndrome

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Baylor Genetics

Oct 19, 2023

- -

DICER1-related disorder

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

Feb 19, 2024

The DICER1 c.4838A>T variant is predicted to result in the amino acid substitution p.Gln1613Leu. To our knowledge, this variant has not been reported in the literature. This variant is reported in 0.00088% of alleles in individuals of European (Non-Finnish) descent in gnomAD, indicating it is rare. This variant is interpreted as uncertain in ClinVar (https://preview.ncbi.nlm.nih.gov/clinvar/variation/483406/). At this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

DICER1-related tumor predisposition

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Nov 21, 2023

This sequence change replaces glutamine, which is neutral and polar, with leucine, which is neutral and non-polar, at codon 1613 of the DICER1 protein (p.Gln1613Leu). This variant is present in population databases (no rsID available, gnomAD 0.0009%). This variant has not been reported in the literature in individuals affected with DICER1-related conditions. ClinVar contains an entry for this variant (Variation ID: 483406). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant¬†is likely to be tolerated. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Hereditary cancer-predisposing syndrome

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 17, 2021

The p.Q1613L variant (also known as c.4838A>T), located in coding exon 22 of the DICER1 gene, results from an A to T substitution at nucleotide position 4838. The glutamine at codon 1613 is replaced by leucine, an amino acid with dissimilar properties. This amino acid position is well conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.085

BayesDel_addAF

Uncertain

0.071

BayesDel_noAF

Benign

-0.14

Cadd

Benign

Dann

Uncertain

0.97

DEOGEN2

Benign

0.23

T;T;T;T;.;.

Eigen

Benign

-0.044

Eigen_PC

Benign

0.11

FATHMM_MKL

Pathogenic

0.98

M_CAP

Benign

0.062

MetaRNN

Benign

0.17

T;T;T;T;T;T

MetaSVM

Uncertain

0.16

MutationAssessor

Uncertain

2.0

M;M;M;M;.;M

MutationTaster

Benign

0.67

D;D;D;D;D;D

PrimateAI

Benign

0.27

PROVEAN

Benign

0.26

N;N;N;N;N;N

REVEL

Benign

0.14

Sift

Benign

0.33

T;T;T;T;T;T

Sift4G

Benign

0.38

T;T;T;T;T;T

Polyphen

0.039

B;B;B;B;.;.

Vest4

0.33

MutPred

0.27

Loss of helix (P = 0.0376);Loss of helix (P = 0.0376);Loss of helix (P = 0.0376);Loss of helix (P = 0.0376);.;Loss of helix (P = 0.0376);

MVP

0.82

MPC

0.48

ClinPred

0.21

GERP RS

5.5

Varity_R

0.24

gMVP

0.41

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