chr16-69136806-G-A

Variant names:

• chr16-69136806-G-A
• rs16958656
• NM_032830.3:c.270G>A

Variant summary

Our verdict is Benign. Variant got -17 ACMG points: 0P and 17B. BP4_Strong BP6_Very_Strong BP7 BS2

The NM_032830.3(UTP4):​c.270G>A​(p.Ala90Ala) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00124 in 1,614,140 control chromosomes in the GnomAD database, including 12 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

• Frequency:
  • Genomes: 𝑓 0.0046 (4 hom., cov: 32)
  • Exomes 𝑓: 0.00089 (8 hom.)
• Consequence: UTP4 NM_032830.3 synonymous
• Clinical Significance: Benign criteria provided, multiple submitters, no conflicts B:2
• Conservation: PhyloP100: 0.184

Genes affected

UTP4 (HGNC:1983): (UTP4 small subunit processome component) This gene encodes a WD40-repeat-containing protein that is localized to the nucleolus. Mutation of this gene causes North American Indian childhood cirrhosis, a severe intrahepatic cholestasis that results in transient neonatal jaundice, and progresses to periportal fibrosis and cirrhosis in childhood and adolescence. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jan 2016]

ACMG classification

Verdict is Benign. Variant got -17 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.76).
• BP6: Variant 16-69136806-G-A is Benign according to our data. Variant chr16-69136806-G-A is described in ClinVar as [Benign]. Clinvar id is 887042.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BP7: Synonymous conserved (PhyloP=0.184 with no splicing effect.
• BS2: High Homozygotes in GnomAd4 at 4 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
UTP4	NM_032830.3	c.270G>A	p.Ala90Ala	synonymous_variant	Exon 3 of 17	ENST00000314423.12	NP_116219.2
UTP4	NM_001318391.2	c.21G>A	p.Ala7Ala	synonymous_variant	Exon 3 of 17		NP_001305320.1
UTP4	XM_047434817.1	c.270G>A	p.Ala90Ala	synonymous_variant	Exon 3 of 10		XP_047290773.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
UTP4	ENST00000314423.12	c.270G>A	p.Ala90Ala	synonymous_variant	Exon 3 of 17	1	NM_032830.3	ENSP00000327179.7

Frequencies

GnomAD3 genomes AF: 0.00459 AC: 698 AN: 152176 Hom.: 4 Cov.: 32

Gnomad AFR AF: 0.0153

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00131

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: 0.000500

Gnomad OTH AF: 0.00575

GnomAD3 exomes AF: 0.00143 AC: 359 AN: 251496 Hom.: 7 AF XY: 0.000964 AC XY: 131 AN XY: 135922

Gnomad AFR exome AF: 0.0169

Gnomad AMR exome AF: 0.00116

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.0000653

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000360

Gnomad OTH exome AF: 0.000326

GnomAD4 exome AF: 0.000889 AC: 1300 AN: 1461846 Hom.: 8 Cov.: 32 AF XY: 0.000804 AC XY: 585 AN XY: 727220

Gnomad4 AFR exome AF: 0.0144

Gnomad4 AMR exome AF: 0.00105

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000696

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.000627

Gnomad4 OTH exome AF: 0.00106

GnomAD4 genome AF: 0.00460 AC: 700 AN: 152294 Hom.: 4 Cov.: 32 AF XY: 0.00415 AC XY: 309 AN XY: 74456

Gnomad4 AFR AF: 0.0153

Gnomad4 AMR AF: 0.00131

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000500

Gnomad4 OTH AF: 0.00569

Alfa AF: 0.00265 Hom.: 3

Bravo AF: 0.00498

Asia WGS AF: 0.000866 AC: 3 AN: 3478

EpiCase AF: 0.000327

EpiControl AF: 0.000415

ClinVar

Significance: Benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Hereditary North American Indian childhood cirrhosis Benign:1

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

not provided Benign:1

Dec 22, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.76
CADD	Benign	2.0
DANN	Benign	0.79
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1

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

Other links and lift over

dbSNP: rs16958656; hg19: chr16-69170709;