rs281865080

Positions:

chr10-98430623-A-G

Variant summary

Our verdict is Pathogenic. Variant got 12 ACMG points: 12P and 0B. PM2PP3_ModeratePP5_Very_Strong

The NM_000195.5(HPS1):c.716T>C(p.Leu239Pro) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000193 in 1,556,306 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★★).

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000019 ( 0 hom. )

Consequence

HPS1
NM_000195.5 missense

Scores

Clinical Significance

Pathogenic criteria provided, multiple submitters, no conflicts P:3

Conservation

PhyloP100: 8.38

Variant links:

Genes affected

HPS1 (HGNC:5163): (HPS1 biogenesis of lysosomal organelles complex 3 subunit 1) This gene encodes a protein that may play a role in organelle biogenesis associated with melanosomes, platelet dense granules, and lysosomes. The encoded protein is a component of three different protein complexes termed biogenesis of lysosome-related organelles complex (BLOC)-3, BLOC4, and BLOC5. Mutations in this gene are associated with Hermansky-Pudlak syndrome type 1. Alternative splicing results in multiple transcript variants. A pseudogene related to this gene is located on chromosome 22. [provided by RefSeq, Aug 2015]

HPS1 links:

ENSG00000289758 (HGNC:):

ENSG00000289758 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 12 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.914

PP5

Variant 10-98430623-A-G is Pathogenic according to our data. Variant chr10-98430623-A-G is described in ClinVar as [Pathogenic]. Clinvar id is 1452567.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr10-98430623-A-G is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
HPS1	NM_000195.5 linkuse as main transcript	c.716T>C	p.Leu239Pro	missense_variant	8/20	ENST00000361490.9	NP_000186.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
HPS1	ENST00000361490.9 linkuse as main transcript	c.716T>C	p.Leu239Pro	missense_variant	8/20	1	NM_000195.5	ENSP00000355310.4	Q92902-1
ENSG00000289758	ENST00000699159.1 linkuse as main transcript	n.*174T>C		non_coding_transcript_exon_variant	8/24			ENSP00000514167.1	A0A8V8TP71
ENSG00000289758	ENST00000699159.1 linkuse as main transcript	n.*174T>C		3_prime_UTR_variant	8/24			ENSP00000514167.1	A0A8V8TP71

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152018

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.0000192

AC:

AN:

1404288

Hom.:

Cov.:

AF XY:

0.0000144

AC XY:

AN XY:

692960

show subpopulations

Gnomad4 AFR exome

AF:

0.00

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:

0.0000250

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152018

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74262

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000441

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000151

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 30, 2024

This sequence change replaces leucine, which is neutral and non-polar, with proline, which is neutral and non-polar, at codon 239 of the HPS1 protein (p.Leu239Pro). This variant is not present in population databases (gnomAD no frequency). This missense change has been observed in individual(s) with Hermansky-Pudlak syndrome and/or ocular albinism (PMID: 12442288, 29345414). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. It has also been observed to segregate with disease in related individuals. This variant is also known as c.922T>C. ClinVar contains an entry for this variant (Variation ID: 1452567). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt HPS1 protein function with a positive predictive value of 80%. For these reasons, this variant has been classified as Pathogenic. -

Hermansky-Pudlak syndrome

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Jul 03, 2024

Variant summary: HPS1 c.716T>C (p.Leu239Pro) results in a non-conservative amino acid change located in the FUZ/MON1/HPS1, second Longin domain (IPR043971) of the encoded protein sequence. Four of five in-silico tools predict a damaging effect of the variant on protein function. The frequency data for this variant in gnomAD is considered unreliable, as metrics indicate poor data quality at this position. c.716T>C has been reported in the literature in multiple individuals affected with Hermansky-Pudlak Syndrome or Inherited albinism (example, Lasseaux_2017, Hermos_2002). These data indicate that the variant is very likely to be associated with disease. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. The following publications have been ascertained in the context of this evaluation (PMID: 31589614, 12442288, 29345414). ClinVar contains an entry for this variant (Variation ID: 1452567). Based on the evidence outlined above, the variant was classified as pathogenic. -

Hermansky-Pudlak syndrome 1

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Baylor Genetics

Nov 25, 2023

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.95

BayesDel_addAF

Pathogenic

0.33

BayesDel_noAF

Pathogenic

0.24

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.64

D;D;D;T;.

Eigen

Uncertain

0.58

Eigen_PC

Uncertain

0.51

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.93

.;.;D;D;D

M_CAP

Uncertain

0.12

MetaRNN

Pathogenic

0.91

D;D;D;D;D

MetaSVM

Benign

-0.49

MutationAssessor

Uncertain

2.8

M;M;M;.;M

PrimateAI

Uncertain

0.67

PROVEAN

Pathogenic

-5.6

D;D;.;D;D

REVEL

Uncertain

0.64

Sift

Uncertain

0.0010

D;D;.;D;D

Sift4G

Uncertain

0.0020

D;D;D;D;D

Polyphen

0.99

D;D;D;.;D

Vest4

0.97

MutPred

0.81

Gain of disorder (P = 0.021);Gain of disorder (P = 0.021);Gain of disorder (P = 0.021);.;Gain of disorder (P = 0.021);

MVP

0.73

MPC

0.75

ClinPred

0.99

GERP RS

3.5

Varity_R

0.92

gMVP

0.89

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.14

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