Variant chr19-45179382-G-T details in Genebe, Genetics Data Aggregator

Variant summary

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

The NM_212550.5(BLOC1S3):c.86G>T(p.Arg29Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000007 in 1,429,006 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R29P) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 7.0e-7 ( 0 hom. )

Consequence

BLOC1S3
NM_212550.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.0560

Variant links:

Genes affected

BLOC1S3 (HGNC:20914): (biogenesis of lysosomal organelles complex 1 subunit 3) This gene encodes a protein that is a component of the BLOC1 multi-subunit protein complex. This complex is necessary for the biogenesis of specialized organelles of the endosomal-lysosomal system, including platelet dense granules and melanosomes. Mutations in this gene cause Hermansky-Pudlak syndrome 8, a disease characterized by lysosomal storage defects, bleeding due to platelet storage pool deficiency, and oculocutaneous albinism. [provided by RefSeq, Jul 2008]

BLOC1S3 links:

MARK4 (HGNC:13538): (microtubule affinity regulating kinase 4) This gene encodes a member of the microtubule affinity-regulating kinase family. These protein kinases phosphorylate microtubule-associated proteins and regulate the transition between stable and dynamic microtubules. The encoded protein is associated with the centrosome throughout mitosis and may be involved in cell cycle control. Expression of this gene is a potential marker for cancer, and the encoded protein may also play a role in Alzheimer's disease. Pseudogenes of this gene are located on both the short and long arm of chromosome 3. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene. [provided by RefSeq, Dec 2010]

MARK4 links:

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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=0.03579828).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
BLOC1S3	NM_212550.5 linkuse as main transcript	c.86G>T	p.Arg29Leu	missense_variant	2/2	ENST00000433642.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris
BLOC1S3	ENST00000433642.3 linkuse as main transcript	c.86G>T	p.Arg29Leu	missense_variant	2/2	2	NM_212550.5	P1
BLOC1S3	ENST00000587722.1 linkuse as main transcript	c.86G>T	p.Arg29Leu	missense_variant	1/1			P1
MARK4	ENST00000587566.5 linkuse as main transcript	c.-276-79607G>T		intron_variant		5

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

7.00e-7

AC:

AN:

1429006

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

710626

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:

9.06e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Hermansky-Pudlak syndrome 8

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

ISTH-SSC Genomics in Thrombosis and Hemostasis, KU Leuven, Center for Molecular and Vascular Biology

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.047

BayesDel_addAF

Benign

-0.31

BayesDel_noAF

Benign

-0.69

CADD

Benign

DANN

Benign

0.92

DEOGEN2

Benign

0.18

T;T

Eigen

Benign

-1.3

Eigen_PC

Benign

-1.2

FATHMM_MKL

Benign

0.0034

LIST_S2

Benign

0.38

.;T

M_CAP

Benign

0.0030

MetaRNN

Benign

0.036

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

-0.69

N;N

MutationTaster

Benign

1.0

N;N

PrimateAI

Uncertain

0.72

PROVEAN

Benign

-0.37

N;.

REVEL

Benign

0.052

Sift

Benign

0.98

T;.

Sift4G

Benign

0.36

T;T

Polyphen

0.0

B;B

Vest4

0.074

MutPred

0.16

Loss of loop (P = 0.0986);Loss of loop (P = 0.0986);

MVP

0.12

MPC

1.1

ClinPred

0.093

GERP RS

0.24

Varity_R

0.051

gMVP

0.20

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

No publications associated with this variant yet.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over