chr17-35180636-C-T

Position:

chr17-35180636-C-T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 1P and 3B. PP3BP4BP6BS2_Supporting

The NM_001267052.2(UNC45B):c.2333C>T(p.Ala778Val) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000201 in 1,613,648 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000099 ( 0 hom., cov: 31)

Exomes 𝑓: 0.00021 ( 3 hom. )

Consequence

UNC45B
NM_001267052.2 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 7.80

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:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PP3

Multiple lines of computational evidence support a deleterious effect 8: AlphaMissense, BayesDel_noAF, Cadd, Dann, Eigen, FATHMM_MKL, MutationAssessor, phyloP100way_vertebrate [when BayesDel_addAF, max_spliceai, M_CAP, MetaRNN, MutationTaster was below the threshold]

BP4

Computational evidence support a benign effect (MetaRNN=0.31498018).

BP6

Variant 17-35180636-C-T is Benign according to our data. Variant chr17-35180636-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 520686.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=1, Uncertain_significance=1}.

BS2

High AC in GnomAd4 at 15 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.2333C>T	p.Ala778Val	missense_variant	18/20	ENST00000394570.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
UNC45B	ENST00000394570.7 linkuse as main transcript	c.2333C>T	p.Ala778Val	missense_variant	18/20	1	NM_001267052.2	P4	Q8IWX7-3
UNC45B	ENST00000591048.2 linkuse as main transcript	c.2096C>T	p.Ala699Val	missense_variant	15/17	1			Q8IWX7-2
UNC45B	ENST00000268876.9 linkuse as main transcript	c.2339C>T	p.Ala780Val	missense_variant	18/20	5		A1	Q8IWX7-1

Frequencies

GnomAD3 genomes

AF:

0.0000987

AC:

AN:

152040

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000242

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000579

Gnomad SAS

AF:

0.00208

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000295

AC:

AN:

250432

Hom.:

AF XY:

0.000384

AC XY:

AN XY:

135460

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000290

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000274

Gnomad SAS exome

AF:

0.00209

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000265

Gnomad OTH exome

AF:

0.000164

GnomAD4 exome

AF:

0.000211

AC:

309

AN:

1461490

Hom.:

Cov.:

AF XY:

0.000283

AC XY:

206

AN XY:

727036

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000378

Gnomad4 SAS exome

AF:

0.00275

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000441

Gnomad4 OTH exome

AF:

0.000116

GnomAD4 genome

AF:

0.0000986

AC:

AN:

152158

Hom.:

Cov.:

AF XY:

0.000121

AC XY:

AN XY:

74378

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000581

Gnomad4 SAS

AF:

0.00208

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000554

Hom.:

Bravo

AF:

0.0000453

ExAC

AF:

0.000288

AC:

Asia WGS

AF:

0.000866

AC:

AN:

3478

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

May 30, 2015

Lines of evidence used in support of classification: LIKELY POSITIVE: Relevant Alteration(s) Detected -

not provided

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Oct 17, 2022

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.79

BayesDel_addAF

Benign

0.0026

BayesDel_noAF

Pathogenic

0.22

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.75

D;.;.

Eigen

Pathogenic

0.81

Eigen_PC

Pathogenic

0.70

FATHMM_MKL

Uncertain

0.96

LIST_S2

Uncertain

0.94

D;D;D

M_CAP

Benign

0.075

MetaRNN

Benign

0.31

T;T;T

MetaSVM

Uncertain

0.14

MutationAssessor

Pathogenic

3.3

M;.;.

MutationTaster

Benign

1.0

D;D;D;D;D

PrimateAI

Uncertain

0.62

PROVEAN

Uncertain

-3.6

D;.;.

REVEL

Uncertain

0.64

Sift

Uncertain

0.0010

D;.;.

Sift4G

Uncertain

0.0040

D;D;D

Polyphen

1.0

D;D;D

Vest4

0.87

MutPred

0.76

Loss of disorder (P = 0.1494);.;.;

MVP

0.85

MPC

0.50

ClinPred

0.36

GERP RS

5.2

Varity_R

0.61

gMVP

0.74

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