3-186853097-GC-G

Variant summary

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

The NM_004797.4(ADIPOQ):c.42del(p.Gly15ValfsTer154) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,884 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: ADIPOQ NM_004797.4 frameshift
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.456

Genes affected

ADIPOQ (HGNC:13633): (adiponectin, C1Q and collagen domain containing) This gene is expressed in adipose tissue exclusively. It encodes a protein with similarity to collagens X and VIII and complement factor C1q. The encoded protein circulates in the plasma and is involved with metabolic and hormonal processes. Mutations in this gene are associated with adiponectin deficiency. Multiple alternatively spliced variants, encoding the same protein, have been identified. [provided by RefSeq, Apr 2010]

ADIPOQ-AS1 (HGNC:40648): (ADIPOQ antisense RNA 1)

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
ADIPOQ	NM_004797.4	c.42del	p.Gly15ValfsTer154	frameshift_variant	2/3	ENST00000320741.7
ADIPOQ-AS1	NR_046662.2	n.2360del		non_coding_transcript_exon_variant	4/4
ADIPOQ	NM_001177800.2	c.42del	p.Gly15ValfsTer154	frameshift_variant	3/4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ADIPOQ	ENST00000320741.7	c.42del	p.Gly15ValfsTer154	frameshift_variant	2/3	1	NM_004797.4	P1
ADIPOQ	ENST00000444204.2	c.42del	p.Gly15ValfsTer154	frameshift_variant	3/4	1		P1
ADIPOQ-AS1	ENST00000422718.1	n.2231del		non_coding_transcript_exon_variant	3/3	5

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461884 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 727244

Gnomad4 AFR exome AF: 0.0000597

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

Bravo AF: 0.0000113

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Oct 06, 2017

The c.42delC variant in the ADIPOQ gene has not been reported previously as a pathogenic variant nor as a benign variant, to our knowledge. The c.42delC variant causes a frameshift starting with codon Glycine 15, changes this amino acid to a Valine residue, and creates a premature Stop codon at position 154 of the new reading frame, denoted p.Gly15ValfsX154. This variant is predicted to cause loss of normal protein function through protein truncation. The c.42delC variant is not observed in large population cohorts (Lek et al., 2016). We interpret c.42delC as a variant of uncertain significance. -

Computational scores

Source: dbNSFP v4.3

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: rs1553805881; hg19: chr3-186570886;