rs751819396

Positions:

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 5P and 1B. PM1PM2PP2BP4

The NM_177438.3(DICER1):c.5013G>T(p.Lys1671Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000657 in 152,122 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 (★★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Consequence

DICER1
NM_177438.3 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 2.36

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:

DICER1 (HGNC:):

DICER1 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 4 ACMG points.

PM1

In a domain RNase III 2 (size 158) in uniprot entity DICER_HUMAN there are 11 pathogenic changes around while only 0 benign (100%) in NM_177438.3

PM2

Very rare variant in population databases, with high coverage;

PP2

Missense variant in gene, where missense usually causes diseases (based on misZ statistic), DICER1. . Gene score misZ 4.2261 (greater than the threshold 3.09). Trascript score misZ 6.1353 (greater than threshold 3.09). GenCC has associacion of gene with goiter, multinodular 1, with or without Sertoli-Leydig cell tumors, global developmental delay - lung cysts - overgrowth - Wilms tumor syndrome, DICER1-related tumor predisposition, DICER1 syndrome, pleuropulmonary blastoma.

BP4

Computational evidence support a benign effect (MetaRNN=0.36074424).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
DICER1	NM_177438.3 linkuse as main transcript	c.5013G>T	p.Lys1671Asn	missense_variant	23/27	ENST00000343455.8	NP_803187.1	Q9UPY3-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
DICER1	ENST00000343455.8 linkuse as main transcript	c.5013G>T	p.Lys1671Asn	missense_variant	23/27	1	NM_177438.3	ENSP00000343745.3		Q9UPY3-1

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152122

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

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:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

Cov.:

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152122

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74318

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000756

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

May 14, 2023

- -

DICER1-related disorder

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

Aug 05, 2023

The DICER1 c.5013G>T variant is predicted to result in the amino acid substitution p.Lys1671Asn. To our knowledge, this variant has not been reported in the literature. This variant is reported in 0.011% of alleles in individuals of African descent in gnomAD (http://gnomad.broadinstitute.org/variant/14-95562244-C-A). 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

Labcorp Genetics (formerly Invitae), Labcorp

Jul 16, 2023

This variant has not been reported in the literature in individuals affected with DICER1-related conditions. This sequence change replaces lysine, which is basic and polar, with asparagine, which is neutral and polar, at codon 1671 of the DICER1 protein (p.Lys1671Asn). This variant is present in population databases (no rsID available, gnomAD 0.01%). ClinVar contains an entry for this variant (Variation ID: 1361992). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt DICER1 protein function. 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 14, 2023

The p.K1671N variant (also known as c.5013G>T), located in coding exon 22 of the DICER1 gene, results from a G to T substitution at nucleotide position 5013. The lysine at codon 1671 is replaced by asparagine, an amino acid with similar properties. This amino acid position is not well conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. 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

0.13

BayesDel_addAF

Benign

-0.015

BayesDel_noAF

Benign

-0.26

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.44

T;T;T;T;.;.

Eigen

Benign

0.055

Eigen_PC

Benign

0.22

FATHMM_MKL

Uncertain

0.94

LIST_S2

Uncertain

0.93

.;.;D;.;D;D

M_CAP

Benign

0.051

MetaRNN

Benign

0.36

T;T;T;T;T;T

MetaSVM

Uncertain

-0.25

MutationAssessor

Benign

1.3

L;L;L;L;.;L

PrimateAI

Uncertain

0.59

PROVEAN

Benign

-1.4

N;N;N;N;N;N

REVEL

Benign

0.21

Sift

Benign

0.034

D;D;D;D;T;D

Sift4G

Benign

0.27

T;T;T;T;T;T

Polyphen

0.35

B;B;B;B;.;.

Vest4

0.43

MutPred

0.38

Loss of methylation at K1671 (P = 0.0191);Loss of methylation at K1671 (P = 0.0191);Loss of methylation at K1671 (P = 0.0191);Loss of methylation at K1671 (P = 0.0191);.;Loss of methylation at K1671 (P = 0.0191);

MVP

0.82

MPC

0.62

ClinPred

0.58

GERP RS

4.9

Varity_R

0.35

gMVP

0.51

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