12-120291724-C-T

Variant names:

• chr12-120291724-C-T
• rs6490288
• ENST00000850922.1:n.470+950G>A

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The ENST00000850922.1(ENSG00000310566):​n.470+950G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000658 in 151,894 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 0.0000066 (0 hom., cov: 31)
• Consequence: ENSG00000310566 ENST00000850922.1 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.253
• Publications: 3 publications found

Genes affected

ENSG00000310566 (HGNC:):

RNU4-2 (HGNC:10193): (RNA, U4 small nuclear 2)

SIRT4 (HGNC:14932): (sirtuin 4) This gene encodes a member of the sirtuin family of proteins, homologs to the yeast Sir2 protein. Members of the sirtuin family are characterized by a sirtuin core domain and grouped into four classes. The functions of human sirtuins have not yet been determined; however, yeast sirtuin proteins are known to regulate epigenetic gene silencing and suppress recombination of rDNA. Studies suggest that the human sirtuins may function as intracellular regulatory proteins with mono-ADP-ribosyltransferase activity. The protein encoded by this gene is included in class IV of the sirtuin family. [provided by RefSeq, Jul 2008]

ACMG classification

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 (BayesDel_noAF=-0.78).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RNU4-2	NR_003137.3	n.*35G>A		downstream_gene_variant		ENST00000365668.2
SIRT4	XM_006719309.5	c.-1572C>T		upstream_gene_variant			XP_006719372.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ENSG00000310566	ENST00000850922.1	n.470+950G>A		intron_variant	Intron 2 of 5
ENSG00000310566	ENST00000850923.1	n.358+1156G>A		intron_variant	Intron 1 of 2
ENSG00000310566	ENST00000850924.1	n.358+1156G>A		intron_variant	Intron 1 of 2
RNU4-2	ENST00000365668.2	n.*35G>A		downstream_gene_variant		6	NR_003137.3

Frequencies

GnomAD3 genomes AF: 0.00000658 AC: 1 AN: 151894 Hom.: 0 Cov.: 31

Gnomad AFR AF: 0.00

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: 0.0000147

Gnomad OTH AF: 0.00

GnomAD4 exome Cov.: 0

GnomAD4 genome AF: 0.00000658 AC: 1 AN: 151894 Hom.: 0 Cov.: 31 AF XY: 0.0000135 AC XY: 1 AN XY: 74182

African (AFR) AF: 0.00 AC: 0 AN: 41258

American (AMR) AF: 0.00 AC: 0 AN: 15242

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5192

South Asian (SAS) AF: 0.00 AC: 0 AN: 4832

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10586

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 68000

Other (OTH) AF: 0.00 AC: 0 AN: 2088

Alfa AF: 0.00 Hom.: 1705

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.78
CADD	Benign	0.055
DANN	Benign	0.82
PhyloP100		-0.25

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs6490288; hg19: chr12-120729527;