chr9-137192137-C-T

Position:

chr9-137192137-C-T

Variant summary

Our verdict is Benign. Variant got -7 ACMG points: 2P and 9B. PM2BP4_StrongBP6BS1

The NM_001128228.3(TPRN):c.2111G>A(p.Arg704His) variant causes a missense change. The variant allele was found at a frequency of 0.0000868 in 1,613,582 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts 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. R704C) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00026 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000069 ( 0 hom. )

Consequence

TPRN
NM_001128228.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:1

Conservation

PhyloP100: 4.86

Variant links:

Genes affected

TPRN (HGNC:26894): (taperin) This locus encodes a sensory epithelial protein. It was defined by linkage analysis in three Pakistani families to lie between D9S1818 (centromeric) and D9SH6 (telomeric). Mutations at this locus have been associated with autosomal recessive deafness. [provided by RefSeq, Oct 2010]

TPRN links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -7 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.057493925).

BP6

Variant 9-137192137-C-T is Benign according to our data. Variant chr9-137192137-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 1195124.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=1, Uncertain_significance=2}.

BS1

Variant frequency is greater than expected in population afr. gnomad4_exome allele frequency = 0.0000691 (101/1461254) while in subpopulation AFR AF= 0.00137 (46/33480). AF 95% confidence interval is 0.00106. There are 0 homozygotes in gnomad4_exome. There are 43 alleles in male gnomad4_exome subpopulation. Median coverage is 31. This position pass quality control queck.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TPRN	NM_001128228.3 linkuse as main transcript	c.2111G>A	p.Arg704His	missense_variant	4/4	ENST00000409012.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TPRN	ENST00000409012.6 linkuse as main transcript	c.2111G>A	p.Arg704His	missense_variant	4/4	1	NM_001128228.3	P1	Q4KMQ1-1
TPRN	ENST00000477345.1 linkuse as main transcript	n.2832G>A		non_coding_transcript_exon_variant	3/3	1
TPRN	ENST00000333046.8 linkuse as main transcript	c.1589G>A	p.Arg530His	missense_variant	3/3	2

Frequencies

GnomAD3 genomes

AF:

0.000256

AC:

AN:

152210

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000893

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.0000918

AC:

AN:

250488

Hom.:

AF XY:

0.0000589

AC XY:

AN XY:

135730

show subpopulations

Gnomad AFR exome

AF:

0.00118

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000884

Gnomad OTH exome

AF:

0.000164

GnomAD4 exome

AF:

0.0000691

AC:

101

AN:

1461254

Hom.:

Cov.:

AF XY:

0.0000592

AC XY:

AN XY:

726948

show subpopulations

Gnomad4 AFR exome

AF:

0.00137

Gnomad4 AMR exome

AF:

0.0000671

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:

0.0000459

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.000256

AC:

AN:

152328

Hom.:

Cov.:

AF XY:

0.000242

AC XY:

AN XY:

74496

show subpopulations

Gnomad4 AFR

AF:

0.000890

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.000473

Alfa

AF:

0.000401

Hom.:

Bravo

AF:

0.000431

ESP6500AA

AF:

0.000908

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000824

AC:

EpiCase

AF:

0.000109

EpiControl

AF:

0.0000593

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:1Benign:1

Uncertain significance, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Dec 06, 2023	This sequence change replaces arginine, which is basic and polar, with histidine, which is basic and polar, at codon 704 of the TPRN protein (p.Arg704His). This variant is present in population databases (rs150844105, gnomAD 0.09%). This variant has not been reported in the literature in individuals affected with TPRN-related conditions. ClinVar contains an entry for this variant (Variation ID: 1195124). 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) has been performed at Invitae for this missense variant, however the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on TPRN 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. -
Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Feb 26, 2021	- -

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

May 04, 2023

The c.2111G>A (p.R704H) alteration is located in exon 4 (coding exon 4) of the TPRN gene. This alteration results from a G to A substitution at nucleotide position 2111, causing the arginine (R) at amino acid position 704 to be replaced by a histidine (H). Based on insufficient or conflicting evidence, 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

-0.071

BayesDel_noAF

Uncertain

0.070

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.021

.;T

Eigen

Uncertain

0.50

Eigen_PC

Uncertain

0.49

FATHMM_MKL

Uncertain

0.96

LIST_S2

Benign

0.64

T;D

M_CAP

Benign

0.051

MetaRNN

Benign

0.057

T;T

MetaSVM

Benign

-0.48

MutationAssessor

Benign

2.0

.;M

MutationTaster

Benign

0.94

D;D

PrimateAI

Uncertain

0.49

PROVEAN

Benign

-1.6

N;N

REVEL

Benign

0.15

Sift

Uncertain

0.0030

D;D

Sift4G

Benign

0.12

T;T

Polyphen

1.0

.;D

Vest4

0.32

MVP

0.030

ClinPred

0.12

GERP RS

4.8

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.17

gMVP

0.36

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.050

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