22-42127761-C-T

Variant summary

Our verdict is Benign. Variant got -9 ACMG points: 0P and 9B. BP4_Strong BP6 BS2

The NM_000106.6(CYP2D6):c.985+81G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000493 in 1,581,296 control chromosomes in the GnomAD database, including 5 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in Lovd as Likely benign (no stars).

• Frequency:
  • Genomes: 𝑓 0.000046 (1 hom., cov: 33)
  • Exomes 𝑓: 0.000050 (4 hom.)
• Consequence: CYP2D6 NM_000106.6 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.0890

Genes affected

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]

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

ACMG classification

Verdict is Benign. Variant got -9 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.88).
• BP6: Variant 22-42127761-C-T is Benign according to our data. Variant chr22-42127761-C-T is described in Lovd as [Likely_benign].
• BS2: High AC in GnomAd at 7 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CYP2D6	NM_000106.6	c.985+81G>A		intron_variant		ENST00000645361.2
CYP2D6	NM_001025161.3	c.832+81G>A		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CYP2D6	ENST00000645361.2	c.985+81G>A		intron_variant			NM_000106.6	P1
NDUFA6-DT	ENST00000439129.5	n.1718+2354C>T		intron_variant, non_coding_transcript_variant		5

Frequencies

GnomAD3 genomes AF: 0.0000463 AC: 7 AN: 151224 Hom.: 1 Cov.: 33

Gnomad AFR AF: 0.000122

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: 0.0000295

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.0000496 AC: 71 AN: 1430072 Hom.: 4 Cov.: 32 AF XY: 0.0000463 AC XY: 33 AN XY: 713078

Gnomad4 AFR exome AF: 0.000184

Gnomad4 AMR exome AF: 0.0000673

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.000105

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000452

Gnomad4 OTH exome AF: 0.0000506

GnomAD4 genome AF: 0.0000463 AC: 7 AN: 151224 Hom.: 1 Cov.: 33 AF XY: 0.0000813 AC XY: 6 AN XY: 73830

Gnomad4 AFR AF: 0.000122

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000295

Gnomad4 OTH AF: 0.00

Bravo AF: 0.0000453

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.88
Cadd	Benign	7.7
Dann	Benign	0.57

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		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: rs267608291; hg19: chr22-42523763;