rs246085

Positions:

• chr12-109120392-T-C

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The ENST00000338432.12(ACACB):​c.-10+3688T>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.121 in 152,118 control chromosomes in the GnomAD database, including 1,792 homozygotes. 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 0.12 (1792 hom., cov: 32)
• Consequence: ACACB ENST00000338432.12 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.195

Genes affected

ACACB (HGNC:85): (acetyl-CoA carboxylase beta) Acetyl-CoA carboxylase (ACC) is a complex multifunctional enzyme system. ACC is a biotin-containing enzyme which catalyzes the carboxylation of acetyl-CoA to malonyl-CoA, the rate-limiting step in fatty acid synthesis. ACC-beta is thought to control fatty acid oxidation by means of the ability of malonyl-CoA to inhibit carnitine-palmitoyl-CoA transferase I, the rate-limiting step in fatty acid uptake and oxidation by mitochondria. ACC-beta may be involved in the regulation of fatty acid oxidation, rather than fatty acid biosynthesis. [provided by RefSeq, Oct 2022]

(HGNC:):

UNG (HGNC:12572): (uracil DNA glycosylase) This gene encodes one of several uracil-DNA glycosylases. One important function of uracil-DNA glycosylases is to prevent mutagenesis by eliminating uracil from DNA molecules by cleaving the N-glycosylic bond and initiating the base-excision repair (BER) pathway. Uracil bases occur from cytosine deamination or misincorporation of dUMP residues. Alternative promoter usage and splicing of this gene leads to two different isoforms: the mitochondrial UNG1 and the nuclear UNG2. The UNG2 term was used as a previous symbol for the CCNO gene (GeneID 10309), which has been confused with this gene, in the literature and some databases. [provided by RefSeq, Nov 2010]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.93).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.264 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ACACB	NM_001093.4	c.-10+3688T>C		intron_variant		ENST00000338432.12	NP_001084.3
LOC105369974	XR_945332.3	n.3652-1608A>G		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ACACB	ENST00000338432.12	c.-10+3688T>C		intron_variant		1	NM_001093.4	ENSP00000341044	P1
	ENST00000541704.2	n.577-4869T>C		intron_variant, non_coding_transcript_variant		5
UNG	ENST00000699563.1	c.775-5553T>C		intron_variant				ENSP00000514437

Frequencies

GnomAD3 genomes AF: 0.121 AC: 18358 AN: 152000 Hom.: 1788 Cov.: 32

Gnomad AFR AF: 0.268

Gnomad AMI AF: 0.0495

Gnomad AMR AF: 0.0663

Gnomad ASJ AF: 0.0611

Gnomad EAS AF: 0.0638

Gnomad SAS AF: 0.0922

Gnomad FIN AF: 0.0585

Gnomad MID AF: 0.0414

Gnomad NFE AF: 0.0646

Gnomad OTH AF: 0.102

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.121 AC: 18387 AN: 152118 Hom.: 1792 Cov.: 32 AF XY: 0.118 AC XY: 8752 AN XY: 74364

Gnomad4 AFR AF: 0.268

Gnomad4 AMR AF: 0.0663

Gnomad4 ASJ AF: 0.0611

Gnomad4 EAS AF: 0.0641

Gnomad4 SAS AF: 0.0923

Gnomad4 FIN AF: 0.0585

Gnomad4 NFE AF: 0.0646

Gnomad4 OTH AF: 0.103

Alfa AF: 0.0787 Hom.: 709

Bravo AF: 0.126

Asia WGS AF: 0.0890 AC: 308 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.93
CADD	Benign	6.1
DANN	Benign	0.82

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: rs246085; hg19: chr12-109558197;