rs8190848

Positions:

• chr8-18221222-T-C

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BS1 BS2

The NM_000662.8(NAT1):​c.-6-820T>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0181 in 152,232 control chromosomes in the GnomAD database, including 49 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 0.018 (49 hom., cov: 32)
• Consequence: NAT1 NM_000662.8 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.122

Genes affected

NAT1 (HGNC:7645): (N-acetyltransferase 1) This gene is one of two arylamine N-acetyltransferase (NAT) genes in the human genome, and is orthologous to the mouse and rat Nat2 genes. The enzyme encoded by this gene catalyzes the transfer of an acetyl group from acetyl-CoA to various arylamine and hydrazine substrates. This enzyme helps metabolize drugs and other xenobiotics, and functions in folate catabolism. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Aug 2011]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.98).
• BS1: Variant frequency is greater than expected in population sas. gnomad4 allele frequency = 0.0181 (2755/152232) while in subpopulation SAS AF= 0.0362 (174/4812). AF 95% confidence interval is 0.0318. There are 49 homozygotes in gnomad4. There are 1294 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
• BS2: High AC in GnomAd4 at 2755 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
NAT1	NM_000662.8	c.-6-820T>C		intron_variant		ENST00000307719.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
NAT1	ENST00000307719.9	c.-6-820T>C		intron_variant		1	NM_000662.8	P1

Frequencies

GnomAD3 genomes AF: 0.0181 AC: 2747 AN: 152116 Hom.: 49 Cov.: 32

Gnomad AFR AF: 0.00483

Gnomad AMI AF: 0.0811

Gnomad AMR AF: 0.0147

Gnomad ASJ AF: 0.0421

Gnomad EAS AF: 0.00655

Gnomad SAS AF: 0.0355

Gnomad FIN AF: 0.00859

Gnomad MID AF: 0.0791

Gnomad NFE AF: 0.0255

Gnomad OTH AF: 0.0229

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

GnomAD4 genome AF: 0.0181 AC: 2755 AN: 152232 Hom.: 49 Cov.: 32 AF XY: 0.0174 AC XY: 1294 AN XY: 74428

Gnomad4 AFR AF: 0.00486

Gnomad4 AMR AF: 0.0147

Gnomad4 ASJ AF: 0.0421

Gnomad4 EAS AF: 0.00656

Gnomad4 SAS AF: 0.0362

Gnomad4 FIN AF: 0.00859

Gnomad4 NFE AF: 0.0255

Gnomad4 OTH AF: 0.0232

Alfa AF: 0.0267 Hom.: 74

Bravo AF: 0.0174

Asia WGS AF: 0.0240 AC: 83 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.98
CADD	Benign	1.4
DANN	Benign	0.57

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: rs8190848; hg19: chr8-18078731;