Genetic Variant UQCRC1:p.Ala434Glu (chr3-48600064-G-T) – ACMG Classification: Likely_benign (-1 pts)

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 2P and 3B. PM2BP4_ModerateBS2_Supporting

The NM_003365.3(UQCRC1):c.1301C>A(p.Ala434Glu) variant causes a missense, splice region change. The variant allele was found at a frequency of 0.00000342 in 1,461,788 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 18/24 in silico tools predict a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A434V) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000034 ( 0 hom. )

Consequence

UQCRC1
NM_003365.3 missense, splice_region

Scores

Splicing: ADA: 0.009393

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 3.65

Publications

0 publications found

Variant links:

Genes affected

UQCRC1 (HGNC:12585): (ubiquinol-cytochrome c reductase core protein 1) Enables ubiquitin protein ligase binding activity. Predicted to be involved in oxidative phosphorylation. Predicted to act upstream of or within mitochondrial electron transport, ubiquinol to cytochrome c. Located in mitochondrion. Implicated in Alzheimer's disease. Biomarker of Alzheimer's disease. [provided by Alliance of Genome Resources, Apr 2022]

UQCRC1 Gene-Disease associations (from GenCC):

parkinsonism with polyneuropathy
Inheritance: Unknown, AD Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics

UQCRC1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.094614714).

BS2

High AC in GnomAdExome4 at 5 AD,Unknown gene. Variant has AC lower than other variant known as pathogenic in the gene, so the strength is limited to Supporting.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_003365.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	UQCRC1	NM_003365.3	MANE Select	c.1301C>A	p.Ala434Glu	missense splice_region	Exon 11 of 13	NP_003356.2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
UQCRC1	ENST00000203407.6	TSL:1 MANE Select	c.1301C>A	p.Ala434Glu	missense splice_region	Exon 11 of 13	ENSP00000203407.5	P31930
UQCRC1	ENST00000899333.1		c.1346C>A	p.Ala449Glu	missense splice_region	Exon 11 of 13	ENSP00000569392.1
UQCRC1	ENST00000912156.1		c.1292C>A	p.Ala431Glu	missense splice_region	Exon 11 of 13	ENSP00000582215.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000342

AC:

AN:

1461788

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

727198

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44718

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26132

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86254

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53358

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.00000450

AC:

AN:

1111990

Other (OTH)

AF:

0.00

AC:

AN:

60390

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.15

BayesDel_addAF

Benign

-0.27

BayesDel_noAF

Benign

-0.62

CADD

Benign

(source)

DANN

Benign

0.97

DEOGEN2

Benign

0.097

Eigen

Benign

-0.51

Eigen_PC

Benign

-0.23

FATHMM_MKL

Uncertain

0.91

LIST_S2

Benign

0.40

M_CAP

Benign

0.010

MetaRNN

Benign

0.095

MetaSVM

Benign

-1.0

MutationAssessor

Benign

-1.7

PhyloP100

3.7

PrimateAI

Benign

0.36

PROVEAN

Benign

2.9

REVEL

Benign

0.084

Sift

Benign

0.24

Sift4G

Benign

0.47

Polyphen

0.0

Vest4

0.31

MutPred

0.56

Gain of disorder (P = 0.0331)

MVP

0.13

MPC

0.26

ClinPred

0.29

GERP RS

3.9

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.045

gMVP

0.42

Mutation Taster

=63/37

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.0094

dbscSNV1_RF

Benign

0.30

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over