chr22-42126462-G-A

Position:

• chr22-42126462-G-A

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BP4_Strong BS2

The ENST00000439129.5(NDUFA6-DT):​n.1718+1055G>A variant causes a intron, non coding transcript change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00903 in 1,250,840 control chromosomes in the GnomAD database, including 9 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as drug response (no stars).

• Frequency:
  • Genomes: 𝑓 0.0058 (1 hom., cov: 33)
  • Exomes 𝑓: 0.0095 (8 hom.)
• Consequence: NDUFA6-DT ENST00000439129.5 intron, non_coding_transcript
• Clinical Significance: drug response no assertion criteria provided O:1
• Conservation: PhyloP100: 0.234

Genes affected

NDUFA6-DT (HGNC:45273): (NDUFA6 divergent transcript)

CYP2D6 (HGNC:2625): (cytochrome P450 family 2 subfamily D member 6) This gene encodes a member of the cytochrome P450 superfamily of enzymes. The cytochrome P450 proteins are monooxygenases which catalyze many reactions involved in drug metabolism and synthesis of cholesterol, steroids and other lipids. This protein localizes to the endoplasmic reticulum and is known to metabolize as many as 25% of commonly prescribed drugs. Its substrates include antidepressants, antipsychotics, analgesics and antitussives, beta adrenergic blocking agents, antiarrythmics and antiemetics. The gene is highly polymorphic in the human population; certain alleles result in the poor metabolizer phenotype, characterized by a decreased ability to metabolize the enzyme's substrates. Some individuals with the poor metabolizer phenotype have no functional protein since they carry 2 null alleles whereas in other individuals the gene is absent. This gene can vary in copy number and individuals with the ultrarapid metabolizer phenotype can have 3 or more active copies of the gene. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2014]

ACMG classification

Verdict is Benign. Variant got -8 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.88).
• BS2: High Homozygotes in GnomAdExome4 at 8 gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CYP2D6	NM_000106.6			downstream_gene_variant		ENST00000645361.2
CYP2D6	NM_001025161.3			downstream_gene_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
NDUFA6-DT	ENST00000439129.5	n.1718+1055G>A		intron_variant, non_coding_transcript_variant		5
CYP2D6	ENST00000645361.2			downstream_gene_variant			NM_000106.6	P1
CYP2D6	ENST00000360124.10			downstream_gene_variant		1

Frequencies

GnomAD3 genomes AF: 0.00581 AC: 881 AN: 151506 Hom.: 1 Cov.: 33

Gnomad AFR AF: 0.00236

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00190

Gnomad ASJ AF: 0.000288

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000208

Gnomad FIN AF: 0.00650

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00993

Gnomad OTH AF: 0.00481

GnomAD4 exome AF: 0.00947 AC: 10410 AN: 1099216 Hom.: 8 Cov.: 16 AF XY: 0.00905 AC XY: 4895 AN XY: 540856

Gnomad4 AFR exome AF: 0.00198

Gnomad4 AMR exome AF: 0.00233

Gnomad4 ASJ exome AF: 0.000389

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.000559

Gnomad4 FIN exome AF: 0.00669

Gnomad4 NFE exome AF: 0.0114

Gnomad4 OTH exome AF: 0.00773

GnomAD4 genome AF: 0.00581 AC: 881 AN: 151624 Hom.: 1 Cov.: 33 AF XY: 0.00546 AC XY: 405 AN XY: 74114

Gnomad4 AFR AF: 0.00236

Gnomad4 AMR AF: 0.00190

Gnomad4 ASJ AF: 0.000288

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.000209

Gnomad4 FIN AF: 0.00650

Gnomad4 NFE AF: 0.00993

Gnomad4 OTH AF: 0.00476

Alfa AF: 0.00606 Hom.: 0

Bravo AF: 0.00550

ClinVar

Significance: drug response

Submissions summary: Other:1

Revision: no assertion criteria provided

Submissions by phenotype

Tramadol response Other:1

drug response, no assertion criteria provided

research

Bruce Budowle Laboratory, University of North Texas Health Science Center

Apr 28, 2018

- T:M1 = postmortem ratio or tramadol to O-desmethyltramadol; t-MP = model-based clustered metabolizer phenotype inferred from T:M1

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.88
CADD	Benign	4.6
DANN	Benign	0.59

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs28371737; hg19: chr22-42522464;