3-149129681-C-A

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2BP4_StrongBS1_Supporting

The NM_032383.5(HPS3):c.-43C>A variant causes a 5 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0003 in 1,455,044 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00026 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00031 ( 1 hom. )

Consequence

HPS3
NM_032383.5 5_prime_UTR

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.635

Variant links:

Genes affected

HPS3 (HGNC:15597): (HPS3 biogenesis of lysosomal organelles complex 2 subunit 1) This gene encodes a protein containing a potential clathrin-binding motif, consensus dileucine signals, and tyrosine-based sorting signals for targeting to vesicles of lysosomal lineage. The encoded protein may play a role in organelle biogenesis associated with melanosomes, platelet dense granules, and lysosomes. Mutations in this gene are associated with Hermansky-Pudlak syndrome type 3. [provided by RefSeq, Apr 2015]

HPS3 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.72).

BS1

Variant frequency is greater than expected in population mid. gnomad4_exome allele frequency = 0.000305 (398/1302798) while in subpopulation MID AF= 0.00743 (28/3766). AF 95% confidence interval is 0.00528. There are 1 homozygotes in gnomad4_exome. There are 187 alleles in male gnomad4_exome subpopulation. Median coverage is 22. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
HPS3	NM_032383.5 linkuse as main transcript	c.-43C>A		5_prime_UTR_variant	1/17	ENST00000296051.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
HPS3	ENST00000296051.7 linkuse as main transcript	c.-43C>A		5_prime_UTR_variant	1/17	1	NM_032383.5	P1	Q969F9-1

Frequencies

GnomAD3 genomes

AF:

0.000263

AC:

AN:

152128

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000121

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000393

Gnomad ASJ

AF:

0.000289

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00962

Gnomad NFE

AF:

0.000353

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.000328

AC:

AN:

112730

Hom.:

AF XY:

0.000381

AC XY:

AN XY:

62938

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000845

Gnomad ASJ exome

AF:

0.000264

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000201

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000314

Gnomad OTH exome

AF:

0.000320

GnomAD4 exome

AF:

0.000305

AC:

398

AN:

1302798

Hom.:

Cov.:

AF XY:

0.000292

AC XY:

187

AN XY:

639650

show subpopulations

Gnomad4 AFR exome

AF:

0.000253

Gnomad4 AMR exome

AF:

0.000935

Gnomad4 ASJ exome

AF:

0.000291

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000709

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000291

Gnomad4 OTH exome

AF:

0.000480

GnomAD4 genome

AF:

0.000256

AC:

AN:

152246

Hom.:

Cov.:

AF XY:

0.000269

AC XY:

AN XY:

74460

show subpopulations

Gnomad4 AFR

AF:

0.000120

Gnomad4 AMR

AF:

0.000392

Gnomad4 ASJ

AF:

0.000289

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000353

Gnomad4 OTH

AF:

0.000473

Alfa

AF:

0.000289

Hom.:

Bravo

AF:

0.000366

Asia WGS

AF:

0.000577

AC:

AN:

3478

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Hermansky-Pudlak syndrome 3

Uncertain:1

Uncertain significance, 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, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.72

Cadd

Benign

Dann

Benign

0.69

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.0

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over