17-35148348-T-G

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 4P and 4B. PP3_StrongBS2

The NM_001267052.2(UNC45B):c.85T>G(p.Tyr29Asp) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000114 in 1,613,980 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000099 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00012 ( 0 hom. )

Consequence

UNC45B
NM_001267052.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.85

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 Uncertain_significance. Variant got 0 ACMG points.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.965

BS2

High AC in GnomAd at 15 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
UNC45B	NM_001267052.2 linkuse as main transcript	c.85T>G	p.Tyr29Asp	missense_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.85T>G	p.Tyr29Asp	missense_variant	2/20	1	NM_001267052.2	P4	Q8IWX7-3
UNC45B	ENST00000591048.2 linkuse as main transcript	c.85T>G	p.Tyr29Asp	missense_variant	1/17	1			Q8IWX7-2
UNC45B	ENST00000268876.9 linkuse as main transcript	c.85T>G	p.Tyr29Asp	missense_variant	2/20	5		A1	Q8IWX7-1

Frequencies

GnomAD3 genomes

AF:

0.0000986

AC:

AN:

152138

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.000221

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000955

AC:

AN:

251326

Hom.:

AF XY:

0.000103

AC XY:

AN XY:

135842

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000194

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.000116

AC:

169

AN:

1461842

Hom.:

Cov.:

AF XY:

0.000113

AC XY:

AN XY:

727222

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000148

Gnomad4 OTH exome

AF:

0.0000497

GnomAD4 genome

AF:

0.0000986

AC:

AN:

152138

Hom.:

Cov.:

AF XY:

0.0000538

AC XY:

AN XY:

74324

show subpopulations

Gnomad4 AFR

AF:

0.00

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:

0.000221

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000847

Hom.:

Bravo

AF:

0.0000718

ExAC

AF:

0.0000659

AC:

EpiCase

AF:

0.000218

EpiControl

AF:

0.000474

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Apr 22, 2022

The c.85T>G (p.Y29D) alteration is located in exon 2 (coding exon 1) of the UNC45B gene. This alteration results from a T to G substitution at nucleotide position 85, causing the tyrosine (Y) at amino acid position 29 to be replaced by an aspartic acid (D). 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

Pathogenic

0.98

BayesDel_addAF

Pathogenic

0.20

BayesDel_noAF

Pathogenic

0.33

Cadd

Pathogenic

Dann

Uncertain

0.99

DEOGEN2

Uncertain

0.76

D;.;.

Eigen

Pathogenic

0.98

Eigen_PC

Pathogenic

0.85

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Benign

0.74

T;T;T

M_CAP

Uncertain

0.22

MetaRNN

Pathogenic

0.96

D;D;D

MetaSVM

Uncertain

0.73

MutationAssessor

Pathogenic

4.8

H;H;H

MutationTaster

Benign

1.0

D;D;D;D;D

PrimateAI

Uncertain

0.70

PROVEAN

Pathogenic

-9.0

D;D;.

REVEL

Pathogenic

0.85

Sift

Pathogenic

0.0

D;D;.

Sift4G

Uncertain

0.0030

D;D;D

Polyphen

1.0

D;D;D

Vest4

0.91

MutPred

0.83

Gain of disorder (P = 0.014);Gain of disorder (P = 0.014);Gain of disorder (P = 0.014);

MVP

0.97

MPC

0.67

ClinPred

0.99

GERP RS

4.8

Varity_R

0.81

gMVP

0.90

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

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