X-71290753-C-T

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The NM_007363.5(NONO):c.116C>T(p.Pro39Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000672 in 1,189,845 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 3 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.0000089 ( 0 hom., 0 hem., cov: 23)

Exomes 𝑓: 0.0000065 ( 0 hom. 3 hem. )

Consequence

NONO
NM_007363.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:3

Conservation

PhyloP100: 2.33

Variant links:

Genes affected

NONO (HGNC:7871): (non-POU domain containing octamer binding) This gene encodes an RNA-binding protein which plays various roles in the nucleus, including transcriptional regulation and RNA splicing. A rearrangement between this gene and the transcription factor E3 gene has been observed in papillary renal cell carcinoma. Alternatively spliced transcript variants have been described. Pseudogenes exist on Chromosomes 2 and 16. [provided by RefSeq, Feb 2009]

NONO links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -6 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.17574915).

BS2

High Hemizygotes in GnomAdExome4 at 3 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NONO	NM_007363.5 link	c.116C>T	p.Pro39Leu	missense_variant	Exon 3 of 12	ENST00000276079.13	NP_031389.3	Q15233-1A0A0S2Z4Z9
NONO	NM_001145408.2 link	c.116C>T	p.Pro39Leu	missense_variant	Exon 4 of 13		NP_001138880.1	Q15233-1A0A0S2Z4Z9
NONO	NM_001145409.2 link	c.116C>T	p.Pro39Leu	missense_variant	Exon 2 of 11		NP_001138881.1	Q15233-1A0A0S2Z4Z9
NONO	NM_001145410.2 link	c.-113-1026C>T		intron_variant	Intron 1 of 9		NP_001138882.1	Q15233-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
NONO	ENST00000276079.13 link	c.116C>T	p.Pro39Leu	missense_variant	Exon 3 of 12	1	NM_007363.5	ENSP00000276079.8		Q15233-1

Frequencies

GnomAD3 genomes

AF:

0.00000890

AC:

AN:

112297

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

34457

show subpopulations

Gnomad AFR

AF:

0.0000323

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

GnomAD3 exomes

AF:

0.0000209

AC:

AN:

143829

Hom.:

AF XY:

0.0000251

AC XY:

AN XY:

39815

show subpopulations

Gnomad AFR exome

AF:

0.0000928

Gnomad AMR exome

AF:

0.0000424

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000850

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000650

AC:

AN:

1077496

Hom.:

Cov.:

AF XY:

0.00000861

AC XY:

AN XY:

348400

show subpopulations

Gnomad4 AFR exome

AF:

0.0000385

Gnomad4 AMR exome

AF:

0.0000611

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000336

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000361

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000890

AC:

AN:

112349

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

34519

show subpopulations

Gnomad4 AFR

AF:

0.0000323

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:

0.0000264

ExAC

AF:

0.0000334

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jul 05, 2022

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Variant summary: NONO c.116C>T (p.Pro39Leu) results in a non-conservative amino acid change in the encoded protein sequence. Four of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 2.1e-05 in 143829 control chromosomes (gnomAD). The available data on variant occurrences in the general population are insufficient to allow any conclusion about variant significance. To our knowledge, no occurrence of c.116C>T in individuals affected with X-Linked Mental Retardation, Syndromic 34 and no experimental evidence demonstrating its impact on protein function have been reported. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014. Based on the evidence outlined above, the variant was classified as uncertain significance. -

See cases

Uncertain:1

Mar 01, 2023

Institute of Human Genetics, University Hospital Muenster

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

ACMG categories: PP1,PP2,BP1 -

not provided

Uncertain:1

Jan 23, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces proline, which is neutral and non-polar, with leucine, which is neutral and non-polar, at codon 39 of the NONO protein (p.Pro39Leu). This variant is present in population databases (rs755285551, gnomAD 0.01%), including at least one homozygous and/or hemizygous individual. This variant has not been reported in the literature in individuals affected with NONO-related conditions. ClinVar contains an entry for this variant (Variation ID: 1704517). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is not expected to disrupt NONO protein function with a negative predictive value of 80%. 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. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.083

BayesDel_addAF

Benign

-0.22

BayesDel_noAF

Benign

-0.56

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.19

T;T;T;T;T;T;.

FATHMM_MKL

Uncertain

0.77

LIST_S2

Uncertain

0.90

.;.;D;D;D;D;D

M_CAP

Benign

0.019

MetaRNN

Benign

0.18

T;T;T;T;T;T;T

MetaSVM

Benign

-0.96

MutationAssessor

Benign

1.6

L;L;L;.;.;.;.

PrimateAI

Uncertain

0.53

PROVEAN

Benign

-1.5

N;N;N;N;N;D;N

REVEL

Benign

0.076

Sift

Uncertain

0.016

D;D;D;D;D;D;D

Sift4G

Benign

0.25

T;T;T;T;T;D;T

Polyphen

0.81

P;P;P;.;.;.;.

Vest4

0.36

MutPred

0.28

Loss of glycosylation at P39 (P = 4e-04);Loss of glycosylation at P39 (P = 4e-04);Loss of glycosylation at P39 (P = 4e-04);Loss of glycosylation at P39 (P = 4e-04);Loss of glycosylation at P39 (P = 4e-04);Loss of glycosylation at P39 (P = 4e-04);Loss of glycosylation at P39 (P = 4e-04);

MVP

0.67

MPC

1.3

ClinPred

0.22

GERP RS

5.1

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.14

gMVP

0.60

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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