16-88706566-G-C

Variant names:

• chr16-88706566-G-C
• rs574986145
• NM_001012759.3:c.36G>C

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 2P and 3B. PM2 BP4_Moderate BP7

The NM_001012759.3(CTU2):​c.36G>C​(p.Ala12Ala) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000735 in 1,456,656 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: 𝑓 0.000053 (0 hom., cov: 33)
  • Exomes 𝑓: 0.000076 (0 hom.)
• Consequence: CTU2 NM_001012759.3 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.111

Genes affected

CTU2 (HGNC:28005): (cytosolic thiouridylase subunit 2) This gene encodes a protein which is involved in the post-transcriptional modification of transfer RNAs (tRNAs). The encoded protein plays a role in thiolation of uridine residue present at the wobble position in a subset of tRNAs, resulting in enhanced codon reading accuracy. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Jan 2016]

RNF166 (HGNC:28856): (ring finger protein 166) Predicted to enable ubiquitin protein ligase activity. Predicted to be involved in protein polyubiquitination and ubiquitin-dependent protein catabolic process. Predicted to be located in cytoplasm. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Likely_benign. Variant got -1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.46).
• BP7: Synonymous conserved (PhyloP=0.111 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CTU2	NM_001012759.3	c.36G>C	p.Ala12Ala	synonymous_variant	Exon 1 of 15	ENST00000453996.7	NP_001012777.1
RNF166	NM_178841.4	c.-241C>G		upstream_gene_variant		ENST00000312838.9	NP_849163.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CTU2	ENST00000453996.7	c.36G>C	p.Ala12Ala	synonymous_variant	Exon 1 of 15	1	NM_001012759.3	ENSP00000388320.2
RNF166	ENST00000312838.9	c.-241C>G		upstream_gene_variant		1	NM_178841.4	ENSP00000326095.4

Frequencies

GnomAD3 genomes AF: 0.0000526 AC: 8 AN: 151986 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.0000242

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: 0.0000736

Gnomad OTH AF: 0.000957

GnomAD4 exome AF: 0.0000759 AC: 99 AN: 1304670 Hom.: 0 Cov.: 31 AF XY: 0.0000606 AC XY: 39 AN XY: 643530

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

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: 0.0000930

Gnomad4 OTH exome AF: 0.0000371

GnomAD4 genome AF: 0.0000526 AC: 8 AN: 151986 Hom.: 0 Cov.: 33 AF XY: 0.0000404 AC XY: 3 AN XY: 74238

Gnomad4 AFR AF: 0.0000242

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: 0.0000736

Gnomad4 OTH AF: 0.000957

Bravo AF: 0.0000907

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.46
CADD	Benign	7.7
DANN	Benign	0.62

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.040		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: rs574986145; hg19: chr16-88772974;