Genetic Variant UCP1:p.Glu168Lys (chr4-140563342-C-T) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_021833.5(UCP1):c.502G>A(p.Glu168Lys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000263 in 1,613,998 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00035 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00025 ( 1 hom. )

Consequence

UCP1
NM_021833.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.45

Variant links:

Genes affected

UCP1 (HGNC:12517): (uncoupling protein 1) Mitochondrial uncoupling proteins (UCP) are members of the family of mitochondrial anion carrier proteins (MACP). UCPs separate oxidative phosphorylation from ATP synthesis with energy dissipated as heat, also referred to as the mitochondrial proton leak. UCPs facilitate the transfer of anions from the inner to the outer mitochondrial membrane and the return transfer of protons from the outer to the inner mitochondrial membrane. They also reduce the mitochondrial membrane potential in mammalian cells. Tissue specificity occurs for the different UCPs and the exact methods of how UCPs transfer H+/OH- are not known. UCPs contain the three homologous protein domains of MACPs. This gene is expressed only in brown adipose tissue, a specialized tissue which functions to produce heat. [provided by RefSeq, Jul 2008]

UCP1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.096083015).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
UCP1	NM_021833.5 link	c.502G>A	p.Glu168Lys	missense_variant	Exon 3 of 6	ENST00000262999.4	NP_068605.1	P25874
UCP1	XM_005263206.4 link	c.499G>A	p.Glu167Lys	missense_variant	Exon 3 of 6		XP_005263263.1	Q4KMT7
UCP1	XM_011532228.3 link	c.502G>A	p.Glu168Lys	missense_variant	Exon 3 of 6		XP_011530530.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
UCP1	ENST00000262999.4 link	c.502G>A	p.Glu168Lys	missense_variant	Exon 3 of 6	1	NM_021833.5	ENSP00000262999.3		P25874

Frequencies

GnomAD3 genomes

AF:

0.000355

AC:

AN:

152124

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000217

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000262

Gnomad ASJ

AF:

0.00952

Gnomad EAS

AF:

0.000193

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000882

Gnomad OTH

AF:

0.000479

GnomAD3 exomes

AF:

0.000513

AC:

129

AN:

251482

Hom.:

AF XY:

0.000500

AC XY:

AN XY:

135914

show subpopulations

Gnomad AFR exome

AF:

0.000246

Gnomad AMR exome

AF:

0.000376

Gnomad ASJ exome

AF:

0.00933

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000123

Gnomad OTH exome

AF:

0.000651

GnomAD4 exome

AF:

0.000253

AC:

370

AN:

1461874

Hom.:

Cov.:

AF XY:

0.000249

AC XY:

181

AN XY:

727238

show subpopulations

Gnomad4 AFR exome

AF:

0.000209

Gnomad4 AMR exome

AF:

0.000358

Gnomad4 ASJ exome

AF:

0.00918

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000576

Gnomad4 OTH exome

AF:

0.000695

GnomAD4 genome

AF:

0.000355

AC:

AN:

152124

Hom.:

Cov.:

AF XY:

0.000431

AC XY:

AN XY:

74292

show subpopulations

Gnomad4 AFR

AF:

0.000217

Gnomad4 AMR

AF:

0.000262

Gnomad4 ASJ

AF:

0.00952

Gnomad4 EAS

AF:

0.000193

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000882

Gnomad4 OTH

AF:

0.000479

Alfa

AF:

0.000522

Hom.:

Bravo

AF:

0.000397

ESP6500AA

AF:

0.000454

AC:

ESP6500EA

AF:

0.000698

AC:

ExAC

AF:

0.000420

AC:

EpiCase

AF:

0.000600

EpiControl

AF:

0.000356

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Apr 25, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.502G>A (p.E168K) alteration is located in exon 3 (coding exon 3) of the UCP1 gene. This alteration results from a G to A substitution at nucleotide position 502, causing the glutamic acid (E) at amino acid position 168 to be replaced by a lysine (K). 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

Uncertain

0.52

BayesDel_addAF

Pathogenic

0.21

BayesDel_noAF

Pathogenic

0.37

CADD

Uncertain

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.44

Eigen

Pathogenic

0.82

Eigen_PC

Pathogenic

0.67

FATHMM_MKL

Uncertain

0.96

LIST_S2

Uncertain

0.93

M_CAP

Benign

0.079

MetaRNN

Benign

0.096

MetaSVM

Pathogenic

0.87

MutationAssessor

Pathogenic

3.8

PrimateAI

Uncertain

0.56

PROVEAN

Uncertain

-3.8

REVEL

Pathogenic

0.86

Sift

Uncertain

0.0010

Sift4G

Uncertain

0.037

Polyphen

1.0

Vest4

0.88

MVP

0.79

MPC

0.73

ClinPred

0.25

GERP RS

5.4

Varity_R

0.72

gMVP

0.87

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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