11-18279583-G-A

Position:

• chr11-18279583-G-A

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_Strong BP6_Very_Strong BA1

The NM_181507.2(HPS5):​c.*299C>T variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.32 in 418,360 control chromosomes in the GnomAD database, including 22,168 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

• Frequency:
  • Genomes: 𝑓 0.34 (8806 hom., cov: 33)
  • Exomes 𝑓: 0.31 (13362 hom.)
• Consequence: HPS5 NM_181507.2 3_prime_UTR
• Clinical Significance: Benign criteria provided, multiple submitters, no conflicts B:3
• Conservation: PhyloP100: -0.0480

Genes affected

HPS5 (HGNC:17022): (HPS5 biogenesis of lysosomal organelles complex 2 subunit 2) This gene encodes a protein that may play a role in organelle biogenesis associated with melanosomes, platelet dense granules, and lysosomes. This protein interacts with Hermansky-Pudlak syndrome 6 protein and may interact with the cytoplasmic domain of integrin, alpha-3. Mutations in this gene are associated with Hermansky-Pudlak syndrome type 5. Multiple transcript variants encoding two distinct isoforms have been identified for this gene. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Benign. Variant got -20 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.84).
• BP6: Variant 11-18279583-G-A is Benign according to our data. Variant chr11-18279583-G-A is described in ClinVar as [Benign]. Clinvar id is 303862.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.407 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
HPS5	NM_181507.2	c.*299C>T		3_prime_UTR_variant	23/23	ENST00000349215.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
HPS5	ENST00000349215.8	c.*299C>T		3_prime_UTR_variant	23/23	1	NM_181507.2	P1
HPS5	ENST00000396253.7	c.*299C>T		3_prime_UTR_variant	22/22	1
HPS5	ENST00000438420.6	c.*299C>T		3_prime_UTR_variant	22/22	1
HPS5	ENST00000537258.1			downstream_gene_variant		5

Frequencies

GnomAD3 genomes AF: 0.336 AC: 50957 AN: 151712 Hom.: 8799 Cov.: 33

Gnomad AFR AF: 0.413

Gnomad AMI AF: 0.149

Gnomad AMR AF: 0.293

Gnomad ASJ AF: 0.326

Gnomad EAS AF: 0.383

Gnomad SAS AF: 0.296

Gnomad FIN AF: 0.383

Gnomad MID AF: 0.312

Gnomad NFE AF: 0.294

Gnomad OTH AF: 0.324

GnomAD4 exome AF: 0.310 AC: 82732 AN: 266530 Hom.: 13362 Cov.: 0 AF XY: 0.308 AC XY: 43882 AN XY: 142496

Gnomad4 AFR exome AF: 0.411

Gnomad4 AMR exome AF: 0.310

Gnomad4 ASJ exome AF: 0.324

Gnomad4 EAS exome AF: 0.393

Gnomad4 SAS exome AF: 0.295

Gnomad4 FIN exome AF: 0.372

Gnomad4 NFE exome AF: 0.295

Gnomad4 OTH exome AF: 0.309

GnomAD4 genome AF: 0.336 AC: 50997 AN: 151830 Hom.: 8806 Cov.: 33 AF XY: 0.338 AC XY: 25041 AN XY: 74186

Gnomad4 AFR AF: 0.412

Gnomad4 AMR AF: 0.293

Gnomad4 ASJ AF: 0.326

Gnomad4 EAS AF: 0.383

Gnomad4 SAS AF: 0.296

Gnomad4 FIN AF: 0.383

Gnomad4 NFE AF: 0.294

Gnomad4 OTH AF: 0.325

Alfa AF: 0.328 Hom.: 1039

Bravo AF: 0.336

Asia WGS AF: 0.375 AC: 1301 AN: 3478

ClinVar

Significance: Benign

Submissions summary: Benign:3

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Benign:2

Benign, criteria provided, single submitter	clinical testing	GeneDx	Nov 12, 2018	- -
Benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -

Hermansky-Pudlak syndrome 5 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	-0.84
CADD	Benign	0.77
DANN	Benign	0.40

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: rs12419588; hg19: chr11-18301130;