14-95094081-G-A

Variant names:

• chr14-95094081-G-A
• rs749900564
• NM_177438.3:c.5171C>T

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 1P and 1B. BP4 PM1_Supporting

This summary comes from the ClinGen Evidence Repository: The NM_177438.2: c.5171C>T variant in DICER1 is a missense variant predicted to cause substitution of proline by leucine at amino acid 1724 (p.Pro1724Leu). The highest population minor allele frequency in gnomAD v4.0.0 is 0.00001872 (1/53418 alleles) in European (Finnish) population, followed by 0.00001159 (1/86256 alleles) in South Asian population (PM2_Supporting, BS1, and BA1 are not met). This variant resides within the RNase IIIb mutational hotspot domain with critical functionality as defined by the ClinGen DICER1 VCEP (PM1_Supporting; PMID:31342592). In silico tools predict no damaging impact of the variant on protein function (REVEL: 0.45; MaxEntScan and SpliceAI: no effect on splicing) (BP4). Due to conflicting evidence, this variant is classified as Uncertain Significance for DICER1-related tumor predisposition based on the ACMG/AMP criteria applied, as specified by the ClinGen DICER1 VCEP: PM1_Supporting, BP4. (Bayesian Points: 0; VCEP specifications version 1.2.0; 01/09/2024) LINK:https://erepo.genome.network/evrepo/ui/classification/CA390865284/MONDO:0017288/024

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000041 (0 hom.)
• Consequence: DICER1 NM_177438.3 missense
• Clinical Significance: Uncertain significance reviewed by expert panel U:8
• Conservation: PhyloP100: 9.52
• Publications: 0 publications found

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 Gene-Disease associations (from GenCC):

• DICER1-related tumor predisposition

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
• pleuropulmonary blastoma

  Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
• DICER1 syndrome

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• global developmental delay - lung cysts - overgrowth - Wilms tumor syndrome

  Inheritance: Unknown Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM1: For more information check the summary or visit ClinGen Evidence Repository.
• BP4: For more information check the summary or visit ClinGen Evidence Repository.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_177438.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DICER1	NM_177438.3	MANE Select	c.5171C>T	p.Pro1724Leu	missense	Exon 24 of 27	NP_803187.1	Q9UPY3-1
	DICER1	NM_001271282.3		c.5171C>T	p.Pro1724Leu	missense	Exon 24 of 27	NP_001258211.1	Q9UPY3-1
	DICER1	NM_001291628.2		c.5171C>T	p.Pro1724Leu	missense	Exon 24 of 27	NP_001278557.1	Q9UPY3-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DICER1	ENST00000343455.8	TSL:1 MANE Select	c.5171C>T	p.Pro1724Leu	missense	Exon 24 of 27	ENSP00000343745.3	Q9UPY3-1
	DICER1	ENST00000393063.6	TSL:1	c.5171C>T	p.Pro1724Leu	missense	Exon 26 of 29	ENSP00000376783.1	Q9UPY3-1
	DICER1	ENST00000527414.5	TSL:1	c.5171C>T	p.Pro1724Leu	missense	Exon 24 of 27	ENSP00000435681.1	Q9UPY3-1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000410 AC: 6 AN: 1461866 Hom.: 0 Cov.: 33 AF XY: 0.00000413 AC XY: 3 AN XY: 727236

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.0000116 AC: 1 AN: 86256

European-Finnish (FIN) AF: 0.0000187 AC: 1 AN: 53418

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00000360 AC: 4 AN: 1111992

Other (OTH) AF: 0.00 AC: 0 AN: 60392

GnomAD4 genome Cov.: 32

Alfa AF: 0.0000740 Hom.: 0

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: reviewed by expert panel

Pathogenic	VUS	Benign	Condition
-	3	-	DICER1-related tumor predisposition (3)
-	2	-	not provided (2)
-	1	-	Euthyroid goiter;C1266144:Pleuropulmonary blastoma;C1867234:Rhabdomyosarcoma, embryonal, 2;C4748924:Global developmental delay - lung cysts - overgrowth - Wilms tumor syndrome (1)
-	1	-	Hereditary cancer-predisposing syndrome (1)
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.49
BayesDel_addAF	Pathogenic	0.19	D
BayesDel_noAF	Uncertain	0.040
CADD	Pathogenic	31
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.70	D
Eigen	Uncertain	0.42
Eigen_PC	Uncertain	0.53
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.95	D
M_CAP	Pathogenic	0.32	D
MetaRNN	Uncertain	0.44	T
MetaSVM	Benign	-0.48	T
MutationAssessor	Benign	-0.015	N
PhyloP100		9.5
PrimateAI	Pathogenic	0.91	D
PROVEAN	Uncertain	-2.6	D
REVEL	Uncertain	0.44
Sift	Benign	0.093	T
Sift4G	Benign	0.16	T
Polyphen		1.0	D
Vest4		0.58
MutPred		0.42		Loss of disorder (P = 0.021)
MVP		0.84
MPC		2.5
ClinPred		0.98	D
GERP RS		5.4
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.53
gMVP		0.80
Mutation Taster		=46/54	disease causing

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

Other links and lift over

dbSNP: rs749900564; hg19: chr14-95560418;