11-637349-GCGCGGGCCGGC-G

Position:

• chr11-637349-GCGCGGGCCGGC-G

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_000797.4(DRD4):​c.52_62del​(p.Pro18GlyfsTer428) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000070 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: DRD4 NM_000797.4 frameshift
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.09

Genes affected

DRD4 (HGNC:3025): (dopamine receptor D4) This gene encodes the D4 subtype of the dopamine receptor. The D4 subtype is a G-protein coupled receptor which inhibits adenylyl cyclase. It is a target for drugs which treat schizophrenia and Parkinson disease. Mutations in this gene have been associated with various behavioral phenotypes, including autonomic nervous system dysfunction, attention deficit/hyperactivity disorder, and the personality trait of novelty seeking. This gene contains a polymorphic number (2-10 copies) of tandem 48 nt repeats; the sequence shown contains four repeats. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
DRD4	NM_000797.4	c.52_62del	p.Pro18GlyfsTer428	frameshift_variant	1/4	ENST00000176183.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
DRD4	ENST00000176183.6	c.52_62del	p.Pro18GlyfsTer428	frameshift_variant	1/4	1	NM_000797.4	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Data not reliable, filtered out with message: AS_VQSR AF: 0.00000702 AC: 8 AN: 1140180 Hom.: 0 AF XY: 0.0000109 AC XY: 6 AN XY: 548226

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.000197

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.0000216

GnomAD4 genome Cov.: 32

Bravo AF: 0.0000113

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Hereditary attention deficit-hyperactivity disorder Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Neuberg Centre For Genomic Medicine, NCGM

-

The frameshift deletion c.52_62del (p.Pro18GlyfsTer428) in DRD4 gene has not been reported previously as a pathogenic variant nor as a benign variant, to our knowledge. This variant is novel (not in any individuals) in gnomAD Exomes and in 1000 Genomes. This variant causes a frameshift starting with codon Proline 18, changes this amino acid to Glycine residue, and creates a premature Stop codon at position 428 of the new reading frame, denoted p.Pro18GlyfsTer428. The variant is present in the mother who is reportedly asymptomatic and hence the variant has been classified as VUS. Based on the above, the variant has been reclassified in her affected child also as VUS. For these reasons, this variant has been classified as Variant of Uncertain Significance (VUS). -

Computational scores

Source: dbNSFP v4.3

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs1279080134; hg19: chr11-637349;