8-22114880-C-G

Position:

• chr8-22114880-C-G

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 0P and 14B. BP4_Strong BP6_Moderate BA1

The NM_005144.5(HR):​c.*820G>C variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0199 in 152,596 control chromosomes in the GnomAD database, including 76 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

• Frequency:
  • Genomes: 𝑓 0.020 (76 hom., cov: 33)
  • Exomes 𝑓: 0.0039 (0 hom.)
• Consequence: HR NM_005144.5 3_prime_UTR
• Clinical Significance: Benign criteria provided, single submitter B:2
• Conservation: PhyloP100: 0.0360

Genes affected

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]

ACMG classification

Verdict is Benign. Variant got -14 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.87).
• BP6: Variant 8-22114880-C-G is Benign according to our data. Variant chr8-22114880-C-G is described in ClinVar as [Benign]. Clinvar id is 362459.Status of the report is criteria_provided_single_submitter, 1 stars.
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0536 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
HR	NM_005144.5	c.*820G>C		3_prime_UTR_variant	19/19	ENST00000381418.9
HR	NM_018411.4	c.*820G>C		3_prime_UTR_variant	18/18

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
HR	ENST00000381418.9	c.*820G>C		3_prime_UTR_variant	19/19	1	NM_005144.5	P1
HR	ENST00000312841.9	c.*820G>C		3_prime_UTR_variant	18/18	5
HR	ENST00000680789.1	c.*820G>C		3_prime_UTR_variant	20/20			P1

Frequencies

GnomAD3 genomes AF: 0.0199 AC: 3035 AN: 152220 Hom.: 76 Cov.: 33

Gnomad AFR AF: 0.0556

Gnomad AMI AF: 0.00658

Gnomad AMR AF: 0.0113

Gnomad ASJ AF: 0.0314

Gnomad EAS AF: 0.000193

Gnomad SAS AF: 0.00145

Gnomad FIN AF: 0.00103

Gnomad MID AF: 0.0190

Gnomad NFE AF: 0.00556

Gnomad OTH AF: 0.0201

GnomAD4 exome AF: 0.00388 AC: 1 AN: 258 Hom.: 0 Cov.: 0 AF XY: 0.00581 AC XY: 1 AN XY: 172

Gnomad4 AFR exome AF: 0.250

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 AF: 0.0199 AC: 3039 AN: 152338 Hom.: 76 Cov.: 33 AF XY: 0.0193 AC XY: 1440 AN XY: 74506

Gnomad4 AFR AF: 0.0555

Gnomad4 AMR AF: 0.0112

Gnomad4 ASJ AF: 0.0314

Gnomad4 EAS AF: 0.000193

Gnomad4 SAS AF: 0.00145

Gnomad4 FIN AF: 0.00103

Gnomad4 NFE AF: 0.00556

Gnomad4 OTH AF: 0.0199

Alfa AF: 0.00108 Hom.: 0

Bravo AF: 0.0224

Asia WGS AF: 0.00520 AC: 18 AN: 3478

ClinVar

Significance: Benign

Submissions summary: Benign:2

Revision: criteria provided, single submitter

Submissions by phenotype

Atrichia with papular lesions Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 12, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Alopecia universalis congenita Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 12, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.87
CADD	Benign	2.4
DANN	Benign	0.56

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: rs142767236; hg19: chr8-21972393;