Genetic Variant UTP6:p.Ala324Thr (chr17-31878779-C-T) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_018428.3(UTP6):c.970G>A(p.Ala324Thr) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,732 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. 1/1 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

UTP6
NM_018428.3 missense, splice_region

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.722

Publications

0 publications found

Variant links:

Genes affected

UTP6 (HGNC:18279): (UTP6 small subunit processome component) Predicted to enable snoRNA binding activity. Predicted to be involved in maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA). Located in chromosome and nucleolus. [provided by Alliance of Genome Resources, Apr 2022]

UTP6 links:

ENSG00000263990 (HGNC:):

ENSG00000263990 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.054620206).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_018428.3. 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
	UTP6	NM_018428.3	MANE Select	c.970G>A	p.Ala324Thr	missense splice_region	Exon 12 of 19	NP_060898.2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
UTP6	ENST00000261708.9	TSL:1 MANE Select	c.970G>A	p.Ala324Thr	missense splice_region	Exon 12 of 19	ENSP00000261708.4	Q9NYH9
UTP6	ENST00000899559.1		c.967G>A	p.Ala323Thr	missense splice_region	Exon 12 of 19	ENSP00000569618.1
UTP6	ENST00000940126.1		c.967G>A	p.Ala323Thr	missense splice_region	Exon 12 of 19	ENSP00000610185.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461732

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

727178

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

33470

American (AMR)

AF:

0.00

AC:

AN:

44684

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26126

East Asian (EAS)

AF:

0.00

AC:

AN:

39698

South Asian (SAS)

AF:

0.00

AC:

AN:

86250

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53414

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1111934

Other (OTH)

AF:

0.00

AC:

AN:

60388

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.375

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

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

not specified (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.083

BayesDel_addAF

Benign

-0.24

BayesDel_noAF

Benign

-0.59

CADD

Benign

(source)

DANN

Benign

0.69

DEOGEN2

Benign

0.0028

Eigen

Benign

-0.42

Eigen_PC

Benign

-0.28

FATHMM_MKL

Uncertain

0.88

LIST_S2

Benign

0.80

M_CAP

Benign

0.0068

MetaRNN

Benign

0.055

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.5

PhyloP100

0.72

PrimateAI

Uncertain

0.48

PROVEAN

Benign

-0.61

REVEL

Benign

0.021

Sift

Benign

0.48

Sift4G

Benign

0.52

Polyphen

0.026

Vest4

0.14

MutPred

0.28

Gain of helix (P = 0.132)

MVP

0.45

MPC

0.088

ClinPred

0.17

GERP RS

3.3

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.031

gMVP

0.086

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

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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