rs267606868

Variant names:

• chr8-22130636-G-C
• rs267606868
• NM_001394132.1:c.73C>G
• HRURF p.Pro25Ala

Variant summary

Our verdict is Uncertain significance. The variant received 5 ACMG points: 6P and 1B. PM2 PM5 PP2 PP5 BP4

The NM_001394132.1(HRURF):​c.73C>G​(p.Pro25Ala) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P25L) has been classified as Pathogenic.

• Frequency: Genomes: not found (cov: 34)
• Consequence: HRURF NM_001394132.1 missense
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 4.49
• Publications: 1 publications found

Genes affected

HRURF (HGNC:55085): (HR upstream open reading frame) Implicated in hypotrichosis 4. [provided by Alliance of Genome Resources, Apr 2022]

HR (HGNC:5172): (HR lysine demethylase and nuclear receptor corepressor) This gene encodes a protein that is involved in hair growth. This protein functions as a transcriptional corepressor of multiple nuclear receptors, including thyroid hormone receptor, the retinoic acid receptor-related orphan receptors and the vitamin D receptors, and it interacts with histone deacetylases. The translation of this protein is modulated by a regulatory open reading frame (ORF) that exists upstream of the primary ORF. Mutations in this upstream ORF cause Marie Unna hereditary hypotrichosis (MUHH), an autosomal dominant form of genetic hair loss. Mutations in this gene also cause autosomal recessive congenital alopecia and atrichia with papular lesions, other diseases resulting in hair loss. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Oct 2014]

HR Gene-Disease associations (from GenCC):

• alopecia universalis congenita

  Inheritance: AR Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, G2P
• atrichia with papular lesions

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Orphanet, Labcorp Genetics (formerly Invitae), Ambry Genetics
• hypotrichosis 4

  Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
• Marie Unna hereditary hypotrichosis

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 5 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr8-22130635-G-A is described in ClinVar as Pathogenic. ClinVar VariationId is 2696995.Status of the report is criteria_provided_single_submitter, 1 stars.
• PP2: Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 3 curated pathogenic missense variants (we use a threshold of 10). The gene has 0 curated benign missense variants. Trascript score misZ: NaN (below the threshold of 3.09). GenCC associations: The gene is linked to hypotrichosis 4.
• PP5: Variant 8-22130636-G-C is Pathogenic according to our data. Variant chr8-22130636-G-C is described in ClinVar as Pathogenic. ClinVar VariationId is 7343.Status of the report is no_assertion_criteria_provided, 0 stars.
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.4). . Strength limited to SUPPORTING due to the PP5.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001394132.1. 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
	HRURF	NM_001394132.1	MANE Select	c.73C>G	p.Pro25Ala	missense	Exon 1 of 1	NP_001381061.1	P0DUH7
	HR	NM_005144.5	MANE Select	c.-249C>G		5_prime_UTR	Exon 1 of 19	NP_005135.2
	HR	NM_018411.4		c.-249C>G		5_prime_UTR	Exon 1 of 18	NP_060881.2	O43593-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	HRURF	ENST00000518377.3	TSL:4 MANE Select	c.73C>G	p.Pro25Ala	missense	Exon 1 of 1	ENSP00000505144.1	P0DUH7
	HR	ENST00000381418.9	TSL:1 MANE Select	c.-249C>G		5_prime_UTR	Exon 1 of 19	ENSP00000370826.4	O43593-1
	HR	ENST00000680789.1		c.-249C>G		5_prime_UTR	Exon 2 of 20	ENSP00000505181.1	O43593-1

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD4 exome Cov.: 0

GnomAD4 genome Cov.: 34

ClinVar

ClinVar submissions

Significance: Pathogenic

Revision: no assertion criteria provided

Pathogenic	VUS	Benign	Condition
1	-	-	Hypotrichosis 4 (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.28
BayesDel_noAF	Benign	-0.40
CADD	Uncertain	24
DANN	Benign	0.95
PhyloP100		4.5
PromoterAI		-0.013	Neutral
Mutation Taster		=296/4	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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

dbSNP: rs267606868;

hg19: chr8-21988149;