X-134377644-A-AGG

Variant names:

• chrX-134377644-A-AGG
• rs1556013203
• NM_001015877.2:c.29_30dupGG

Variant summary

Our verdict is Pathogenic. The variant received 12 ACMG points: 12P and 0B. PVS1 PM2 PP5_Moderate

The NM_001015877.2(PHF6):​c.29_30dupGG​(p.Pro11GlyfsTer23) variant causes a frameshift change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Pathogenic (★).

• Frequency: Genomes: not found (cov: 23)
• Consequence: PHF6 NM_001015877.2 frameshift
• Clinical Significance: Pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 9.47
• Publications: 0 publications found

Genes affected

PHF6 (HGNC:18145): (PHD finger protein 6) This gene is a member of the plant homeodomain (PHD)-like finger (PHF) family. It encodes a protein with two PHD-type zinc finger domains, indicating a potential role in transcriptional regulation, that localizes to the nucleolus. Mutations affecting the coding region of this gene or the splicing of the transcript have been associated with Borjeson-Forssman-Lehmann syndrome (BFLS), a disorder characterized by cognitive disability, epilepsy, hypogonadism, hypometabolism, obesity, swelling of subcutaneous tissue of the face, narrow palpebral fissures, and large ears. Alternate splicing results in multiple transcript variants, encoding different isoforms. [provided by RefSeq, Jun 2010]

PHF6 Gene-Disease associations (from GenCC):

• Borjeson-Forssman-Lehmann syndrome

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

ACMG classification

Our verdict: Pathogenic. The variant received 12 ACMG points.

• PVS1: Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant located near the start codon (<100nt), not predicted to undergo nonsense mediated mRNA decay. There are 43 pathogenic variants in the truncated region.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant X-134377644-A-AGG is Pathogenic according to our data. Variant chrX-134377644-A-AGG is described in ClinVar as Pathogenic. ClinVar VariationId is 488575.Status of the report is criteria_provided_single_submitter, 1 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001015877.2. 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
	PHF6	NM_001015877.2	MANE Select	c.29_30dupGG	p.Pro11GlyfsTer23	frameshift	Exon 2 of 11	NP_001015877.1	Q8IWS0-1
	PHF6	NM_032458.3		c.29_30dupGG	p.Pro11GlyfsTer23	frameshift	Exon 2 of 10	NP_115834.1	Q8IWS0-1
	PHF6	NM_032335.3		c.29_30dupGG	p.Pro11GlyfsTer23	frameshift	Exon 2 of 8	NP_115711.2	Q8IWS0-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PHF6	ENST00000370803.8	TSL:1 MANE Select	c.29_30dupGG	p.Pro11GlyfsTer23	frameshift	Exon 2 of 11	ENSP00000359839.4	Q8IWS0-1
	PHF6	ENST00000332070.7	TSL:1	c.29_30dupGG	p.Pro11GlyfsTer23	frameshift	Exon 2 of 10	ENSP00000329097.3	Q8IWS0-1
	PHF6	ENST00000370799.5	TSL:1	c.29_30dupGG	p.Pro11GlyfsTer23	frameshift	Exon 2 of 9	ENSP00000359835.1	Q5JRC6

Frequencies

GnomAD3 genomes Cov.: 23

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 23

ClinVar

ClinVar submissions

Significance: Pathogenic

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
1	-	-	Borjeson-Forssman-Lehmann syndrome (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		9.5
Mutation Taster		=0/200	disease causing (ClinVar)

Splicing

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

Other links and lift over

dbSNP: rs1556013203; hg19: chrX-133511674;