17-75522248-G-C

Variant names:

Variant summary

Our verdict is Benign. The variant received -13 ACMG points: 0P and 13B. BP4_StrongBP6BS1BS2

The NM_207346.3(TSEN54):c.1167G>C(p.Gln389His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000347 in 1,547,450 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. Q389P) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.0018 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00019 ( 3 hom. )

Consequence

TSEN54
NM_207346.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:4

Conservation

PhyloP100: 0.0720

Publications

1 publications found

Variant links:

Genes affected

TSEN54 (HGNC:27561): (tRNA splicing endonuclease subunit 54) This gene encodes a subunit of the tRNA splicing endonuclease complex, which catalyzes the removal of introns from precursor tRNAs. The complex is also implicated in pre-mRNA 3-prime end processing. Mutations in this gene result in pontocerebellar hypoplasia type 2.[provided by RefSeq, Oct 2009]

TSEN54 Gene-Disease associations (from GenCC):

pontocerebellar hypoplasia type 2A
Inheritance: AR Classification: STRONG Submitted by: PanelApp Australia
pontocerebellar hypoplasia type 4
Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, PanelApp Australia
pontocerebellar hypoplasia type 5
Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
pontocerebellar hypoplasia type 2
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

TSEN54 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -13 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0036111772).

BP6

Variant 17-75522248-G-C is Benign according to our data. Variant chr17-75522248-G-C is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 212450.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00179 (272/152348) while in subpopulation AFR AF = 0.00637 (265/41584). AF 95% confidence interval is 0.00574. There are 0 homozygotes in GnomAd4. There are 122 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAdExome4 at 3 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TSEN54	NM_207346.3 link	c.1167G>C	p.Gln389His	missense_variant	Exon 8 of 11	ENST00000333213.11	NP_997229.2	Q7Z6J9-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TSEN54	ENST00000333213.11 link	c.1167G>C	p.Gln389His	missense_variant	Exon 8 of 11	1	NM_207346.3	ENSP00000327487.6		Q7Z6J9-1

Frequencies

GnomAD3 genomes

AF:

0.00178

AC:

271

AN:

152230

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00637

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000327

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:

0.000955

GnomAD2 exomes

AF:

0.000363

AC:

AN:

146168

AF XY:

0.000267

show subpopulations

Gnomad AFR exome

AF:

0.00694

Gnomad AMR exome

AF:

0.0000813

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000184

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000190

AC:

265

AN:

1395102

Hom.:

Cov.:

AF XY:

0.000180

AC XY:

124

AN XY:

687774

show subpopulations

African (AFR)

AF:

0.00786

AC:

248

AN:

31534

American (AMR)

AF:

0.000168

AC:

AN:

35720

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25134

East Asian (EAS)

AF:

0.00

AC:

AN:

35670

South Asian (SAS)

AF:

0.00

AC:

AN:

79154

European-Finnish (FIN)

AF:

0.00

AC:

AN:

47088

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5282

European-Non Finnish (NFE)

AF:

0.00000186

AC:

AN:

1077688

Other (OTH)

AF:

0.000156

AC:

AN:

57832

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.478

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00179

AC:

272

AN:

152348

Hom.:

Cov.:

AF XY:

0.00164

AC XY:

122

AN XY:

74492

show subpopulations

African (AFR)

AF:

0.00637

AC:

265

AN:

41584

American (AMR)

AF:

0.000327

AC:

AN:

15306

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5182

South Asian (SAS)

AF:

0.00

AC:

AN:

4824

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10630

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68028

Other (OTH)

AF:

0.000945

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.498

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000492

Hom.:

Bravo

AF:

0.00196

ESP6500AA

AF:

0.00101

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000251

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:4

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Oct 22, 2014

Genetic Services Laboratory, University of Chicago

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Inborn genetic diseases

Benign:1

Jan 03, 2025

Ambry Genetics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

not provided

Benign:1

Jun 16, 2020

GeneDx

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Pontoneocerebellar hypoplasia

Benign:1

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease. -

TSEN54-related disorder

Benign:1

Dec 20, 2019

PreventionGenetics, part of Exact Sciences

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.084

BayesDel_addAF

Benign

-0.54

BayesDel_noAF

Benign

-0.54

CADD

Benign

0.88

(source)

DANN

Benign

0.40

DEOGEN2

Benign

0.011

Eigen

Benign

-1.5

Eigen_PC

Benign

-1.5

FATHMM_MKL

Benign

0.046

LIST_S2

Benign

0.20

MetaRNN

Benign

0.0036

MetaSVM

Benign

-1.0

MutationAssessor

Benign

-0.41

PhyloP100

0.072

PrimateAI

Benign

0.33

PROVEAN

Benign

-0.26

REVEL

Benign

0.064

Sift

Benign

0.46

Sift4G

Benign

0.62

Polyphen

0.0

Vest4

0.055

MutPred

0.18

Gain of relative solvent accessibility (P = 0.0479);

MVP

0.38

MPC

0.24

ClinPred

0.0030

GERP RS

-4.3

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.028

gMVP

0.23

Mutation Taster

=97/3

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over