10-102066015-A-G

Position:

chr10-102066015-A-G

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_024747.6(HPS6):c.541A>G(p.Thr181Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00027 in 1,605,090 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00017 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00028 ( 0 hom. )

Consequence

HPS6
NM_024747.6 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:3B:1

Conservation

PhyloP100: 1.39

Variant links:

Genes affected

HPS6 (HGNC:18817): (HPS6 biogenesis of lysosomal organelles complex 2 subunit 3) This intronless 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 5 protein. Mutations in this gene are associated with Hermansky-Pudlak syndrome type 6. [provided by RefSeq, Jul 2008]

HPS6 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.037591785).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
HPS6	NM_024747.6 linkuse as main transcript	c.541A>G	p.Thr181Ala	missense_variant	1/1	ENST00000299238.7	NP_079023.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
HPS6	ENST00000299238.7 linkuse as main transcript	c.541A>G	p.Thr181Ala	missense_variant	1/1	6	NM_024747.6	ENSP00000299238.5		Q86YV9

Frequencies

GnomAD3 genomes

AF:

0.000171

AC:

AN:

152234

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000196

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:

0.000279

Gnomad OTH

AF:

0.00143

GnomAD3 exomes

AF:

0.000212

AC:

AN:

240908

Hom.:

AF XY:

0.000175

AC XY:

AN XY:

131798

show subpopulations

Gnomad AFR exome

AF:

0.0000649

Gnomad AMR exome

AF:

0.000408

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000299

Gnomad OTH exome

AF:

0.000499

GnomAD4 exome

AF:

0.000280

AC:

407

AN:

1452740

Hom.:

Cov.:

AF XY:

0.000271

AC XY:

196

AN XY:

723094

show subpopulations

Gnomad4 AFR exome

AF:

0.0000896

Gnomad4 AMR exome

AF:

0.000448

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:

0.000331

Gnomad4 OTH exome

AF:

0.000265

GnomAD4 genome

AF:

0.000171

AC:

AN:

152350

Hom.:

Cov.:

AF XY:

0.000134

AC XY:

AN XY:

74500

show subpopulations

Gnomad4 AFR

AF:

0.0000240

Gnomad4 AMR

AF:

0.000196

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000279

Gnomad4 OTH

AF:

0.00142

Alfa

AF:

0.000400

Hom.:

Bravo

AF:

0.000219

TwinsUK

AF:

0.00189

AC:

ALSPAC

AF:

0.00

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000349

AC:

ExAC

AF:

0.000165

AC:

EpiCase

AF:

0.000218

EpiControl

AF:

0.000474

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:3Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jan 19, 2024

The c.541A>G (p.T181A) alteration is located in exon 1 (coding exon 1) of the HPS6 gene. This alteration results from a A to G substitution at nucleotide position 541, causing the threonine (T) at amino acid position 181 to be replaced by an alanine (A). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Hermansky-Pudlak syndrome 6

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Apr 27, 2017

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases did not allow this variant to be ruled in or out of causing disease. Therefore, this variant is classified as a variant of unknown significance. -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Aug 16, 2022

This sequence change replaces threonine, which is neutral and polar, with alanine, which is neutral and non-polar, at codon 181 of the HPS6 protein (p.Thr181Ala). This variant is present in population databases (rs144257610, gnomAD 0.04%). This variant has not been reported in the literature in individuals affected with HPS6-related conditions. ClinVar contains an entry for this variant (Variation ID: 435461). Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

not specified

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Genetic Services Laboratory, University of Chicago

Feb 20, 2017

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.097

BayesDel_addAF

Benign

-0.58

BayesDel_noAF

Benign

-0.62

CADD

Benign

DANN

Benign

0.78

DEOGEN2

Benign

0.19

Eigen

Benign

-0.58

Eigen_PC

Benign

-0.53

FATHMM_MKL

Benign

0.048

LIST_S2

Benign

0.40

M_CAP

Benign

0.0042

MetaRNN

Benign

0.038

MetaSVM

Benign

-0.92

MutationAssessor

Uncertain

2.1

PrimateAI

Benign

0.45

PROVEAN

Benign

-0.63

REVEL

Benign

0.070

Sift

Benign

0.28

Sift4G

Benign

0.58

Polyphen

0.0010

Vest4

0.12

MVP

0.14

MPC

0.46

ClinPred

0.029

GERP RS

2.5

Varity_R

0.050

gMVP

0.29

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