2-171443575-GA-GAA

Variant names:

• chr2-171443575-G-GA
• rs863224865
• NM_025000.4:c.289dupA

Variant summary

Our verdict is Pathogenic. The variant received 18 ACMG points: 18P and 0B. PVS1 PM2 PP5_Very_Strong

The NM_025000.4(DCAF17):​c.289dupA​(p.Ile97AsnfsTer22) variant causes a frameshift change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Pathogenic (★★). Variant results in nonsense mediated mRNA decay.

• Frequency: Genomes: not found (cov: 32)
• Consequence: DCAF17 NM_025000.4 frameshift
• Clinical Significance: Pathogenic criteria provided, multiple submitters, no conflicts P:2
• Conservation: PhyloP100: 6.90
• Publications: 1 publications found

Genes affected

DCAF17 (HGNC:25784): (DDB1 and CUL4 associated factor 17) This gene encodes a nuclear transmembrane protein that associates with cullin 4A/damaged DNA binding protein 1 ubiquitin ligase complex. Mutations in this gene are associated with Woodhouse-Sakati syndrome. Alternate splicing results in multiple transcript variants. [provided by RefSeq, Sep 2009]

DCAF17 Gene-Disease associations (from GenCC):

• Woodhouse-Sakati syndrome

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE, LIMITED Submitted by: Ambry Genetics, Orphanet, ClinGen, G2P, Genomics England PanelApp, Labcorp Genetics (formerly Invitae)

ACMG classification

Our verdict: Pathogenic. The variant received 18 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 2-171443575-G-GA is Pathogenic according to our data. Variant chr2-171443575-G-GA is described in ClinVar as Pathogenic. ClinVar VariationId is 216916.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_025000.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DCAF17	NM_025000.4	MANE Select	c.289dupA	p.Ile97AsnfsTer22	frameshift	Exon 3 of 14	NP_079276.2
	DCAF17	NM_001164821.2		c.289dupA	p.Ile97AsnfsTer22	frameshift	Exon 3 of 12	NP_001158293.1
	DCAF17	NR_028482.2		n.641dupA		non_coding_transcript_exon	Exon 3 of 13

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DCAF17	ENST00000375255.8	TSL:1 MANE Select	c.289dupA	p.Ile97AsnfsTer22	frameshift	Exon 3 of 14	ENSP00000364404.3
	DCAF17	ENST00000966668.1		c.289dupA	p.Ile97AsnfsTer20	frameshift	Exon 3 of 15	ENSP00000636727.1
	DCAF17	ENST00000907633.1		c.280dupA	p.Ile94AsnfsTer22	frameshift	Exon 3 of 14	ENSP00000577692.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions as Germline

Significance: Pathogenic

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
2	-	-	Woodhouse-Sakati syndrome (2)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		6.9
Mutation Taster		=0/200	disease causing (ClinVar)

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

Other links and lift over

dbSNP: rs863224865; hg19: chr2-172300085; COSMIC: COSV64544846;