12-108883967-T-G

Position:

• chr12-108883967-T-G

Variant summary

Our verdict is Benign. Variant got -10 ACMG points: 0P and 10B. BP4_Moderate BA1

The NM_001917.5(DAO):​c.-9-1031T>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.322 in 152,214 control chromosomes in the GnomAD database, including 9,710 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 0.32 (9710 hom., cov: 33)
• Consequence: DAO NM_001917.5 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.21

Genes affected

DAO (HGNC:2671): (D-amino acid oxidase) This gene encodes the peroxisomal enzyme D-amino acid oxidase. The enzyme is a flavoprotein which uses flavin adenine dinucleotide (FAD) as its prosthetic group. Its substrates include a wide variety of D-amino acids, but it is inactive on the naturally occurring L-amino acids. Its biological function is not known; it may act as a detoxifying agent which removes D-amino acids that accumulate during aging. In mice, it degrades D-serine, a co-agonist of the NMDA receptor. This gene may play a role in the pathophysiology of schizophrenia. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Benign. Variant got -10 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.41).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.521 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
DAO	NM_001917.5	c.-9-1031T>G		intron_variant		ENST00000228476.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
DAO	ENST00000228476.8	c.-9-1031T>G		intron_variant		1	NM_001917.5	P1

Frequencies

GnomAD3 genomes AF: 0.321 AC: 48849 AN: 152096 Hom.: 9689 Cov.: 33

Gnomad AFR AF: 0.526

Gnomad AMI AF: 0.190

Gnomad AMR AF: 0.436

Gnomad ASJ AF: 0.217

Gnomad EAS AF: 0.334

Gnomad SAS AF: 0.335

Gnomad FIN AF: 0.246

Gnomad MID AF: 0.247

Gnomad NFE AF: 0.188

Gnomad OTH AF: 0.308

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

GnomAD4 genome AF: 0.322 AC: 48937 AN: 152214 Hom.: 9710 Cov.: 33 AF XY: 0.327 AC XY: 24339 AN XY: 74420

Gnomad4 AFR AF: 0.526

Gnomad4 AMR AF: 0.437

Gnomad4 ASJ AF: 0.217

Gnomad4 EAS AF: 0.334

Gnomad4 SAS AF: 0.336

Gnomad4 FIN AF: 0.246

Gnomad4 NFE AF: 0.188

Gnomad4 OTH AF: 0.312

Alfa AF: 0.224 Hom.: 5947

Bravo AF: 0.345

Asia WGS AF: 0.315 AC: 1098 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.41
CADD	Benign	15
DANN	Benign	0.77

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: rs2070587; hg19: chr12-109277743;