17-35148430-C-T

Position:

chr17-35148430-C-T

Variant summary

Our verdict is Benign. Variant got -7 ACMG points: 0P and 7B. BP4_StrongBP6_ModerateBS2_Supporting

The NM_001267052.2(UNC45B):c.167C>T(p.Thr56Met) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000196 in 1,613,422 control chromosomes in the GnomAD database, including 5 homozygotes. In-silico tool predicts a benign outcome for this variant. 18/23 in silico tools predict a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.00012 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00020 ( 5 hom. )

Consequence

UNC45B
NM_001267052.2 missense, splice_region

Scores

Splicing: ADA: 0.01321

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: -0.316

Variant links:

Genes affected

UNC45B (HGNC:14304): (unc-45 myosin chaperone B) This gene encodes a co-chaperone required for folding and accumulation of type II myosins. The protein consists of three tetratricopeptide repeat motifs at the N-terminus that form a complex with heat shock protein 90, a central region of unknown function that is conserved in all Unc-45 proteins, and a C-terminal Unc-45/Cro1/She4 domain. The protein is expressed at high levels in striated muscle, where its muscle myosin chaperone activity is dependent on heat shock protein 90 acting as a co-chaperone. A missense mutation in this gene has been associated with cataract development. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Apr 2015]

UNC45B links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -7 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.007403046).

BP6

Variant 17-35148430-C-T is Benign according to our data. Variant chr17-35148430-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 2360884.Status of the report is criteria_provided_single_submitter, 1 stars.

BS2

High AC in GnomAd4 at 18 AD gene. Variant has AC lower than other variant known as pathogenic in the gene, so the strength is limited to Supporting.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
UNC45B	NM_001267052.2 linkuse as main transcript	c.167C>T	p.Thr56Met	missense_variant, splice_region_variant	2/20	ENST00000394570.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
UNC45B	ENST00000394570.7 linkuse as main transcript	c.167C>T	p.Thr56Met	missense_variant, splice_region_variant	2/20	1	NM_001267052.2	P4	Q8IWX7-3
UNC45B	ENST00000591048.2 linkuse as main transcript	c.167C>T	p.Thr56Met	missense_variant, splice_region_variant	1/17	1			Q8IWX7-2
UNC45B	ENST00000268876.9 linkuse as main transcript	c.167C>T	p.Thr56Met	missense_variant, splice_region_variant	2/20	5		A1	Q8IWX7-1

Frequencies

GnomAD3 genomes

AF:

0.000118

AC:

AN:

152130

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:

0.00331

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000455

AC:

113

AN:

248484

Hom.:

AF XY:

0.000601

AC XY:

AN XY:

134688

show subpopulations

Gnomad AFR exome

AF:

0.0000625

Gnomad AMR exome

AF:

0.0000290

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00357

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000329

GnomAD4 exome

AF:

0.000204

AC:

298

AN:

1461174

Hom.:

Cov.:

AF XY:

0.000271

AC XY:

197

AN XY:

726852

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.00321

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000360

Gnomad4 OTH exome

AF:

0.000249

GnomAD4 genome

AF:

0.000118

AC:

AN:

152248

Hom.:

Cov.:

AF XY:

0.000148

AC XY:

AN XY:

74444

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:

0.00332

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000302

ExAC

AF:

0.000478

AC:

Asia WGS

AF:

0.00260

AC:

AN:

3478

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Inborn genetic diseases

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Jul 27, 2022

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. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.056

BayesDel_addAF

Benign

-0.57

BayesDel_noAF

Benign

-0.59

CADD

Benign

DANN

Benign

0.96

DEOGEN2

Benign

0.026

T;.;.

Eigen

Benign

-0.94

Eigen_PC

Benign

-0.89

FATHMM_MKL

Benign

0.26

LIST_S2

Benign

0.83

T;T;T

M_CAP

Benign

0.014

MetaRNN

Benign

0.0074

T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

-0.18

N;N;N

MutationTaster

Benign

0.89

N;N;N;N;N

PrimateAI

Benign

0.33

PROVEAN

Benign

2.0

N;N;.

REVEL

Benign

0.076

Sift

Benign

0.088

T;T;.

Sift4G

Benign

0.13

T;T;T

Polyphen

0.0

B;B;B

Vest4

0.11

MutPred

0.49

Loss of ubiquitination at K55 (P = 0.0702);Loss of ubiquitination at K55 (P = 0.0702);Loss of ubiquitination at K55 (P = 0.0702);

MVP

0.38

MPC

0.10

ClinPred

0.021

GERP RS

-5.4

Varity_R

0.024

gMVP

0.19

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.013

dbscSNV1_RF

Benign

0.14

SpliceAI score (max)

0.10

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