6-8063817-C-T

Variant names:

• chr6-8063817-C-T
• rs2815153
• NM_201280.3:c.112+448G>A

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_201280.3(BLOC1S5):​c.112+448G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.726 in 152,122 control chromosomes in the GnomAD database, including 40,834 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.73 (40834 hom., cov: 32)
• Consequence: BLOC1S5 NM_201280.3 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.390
• Publications: 3 publications found

Genes affected

BLOC1S5 (HGNC:18561): (biogenesis of lysosomal organelles complex 1 subunit 5) This gene encodes a component of BLOC-1 (biogenesis of lysosome-related organelles complex 1). Components of this complex are involved in the biogenesis of organelles such as melanosomes and platelet-dense granules. A mouse model for Hermansky-Pudlak Syndrome is mutated in the murine version of this gene. Alternative splicing results in multiple transcript variants. Read-through transcription exists between this gene and the upstream EEF1E1 (eukaryotic translation elongation factor 1 epsilon 1) gene, as well as with the downstream TXNDC5 (thioredoxin domain containing 5) gene. [provided by RefSeq, Dec 2010]

EEF1E1-BLOC1S5 (HGNC:49187): (EEF1E1-BLOC1S5 readthrough (NMD candidate)) This locus represents naturally occurring read-through transcription between the neighboring EEF1E1 (eukaryotic translation elongation factor 1 epsilon 1) and MUTED (muted homolog) genes on chromosome 6. The read-through transcript is a candidate for nonsense-mediated mRNA decay (NMD) and is unlikely to produce a protein product. [provided by RefSeq, Dec 2010]

BLOC1S5-TXNDC5 (HGNC:42001): (BLOC1S5-TXNDC5 readthrough (NMD candidate)) This locus represents naturally occurring read-through transcription between the neighboring MUTED (muted homolog) and TXNDC5 (thioredoxin domain containing 5) genes on chromosome 6. The read-through transcript is a candidate for nonsense-mediated mRNA decay (NMD) and is unlikely to produce a protein product. [provided by RefSeq, Dec 2010]

ACMG classification

Our verdict: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.68).
• BA1: GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.973 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
BLOC1S5	NM_201280.3	c.112+448G>A		intron_variant	Intron 1 of 4	ENST00000397457.7	NP_958437.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
BLOC1S5	ENST00000397457.7	c.112+448G>A		intron_variant	Intron 1 of 4	1	NM_201280.3	ENSP00000380598.2
EEF1E1-BLOC1S5	ENST00000397456.2	n.385-1201G>A		intron_variant	Intron 3 of 6	3		ENSP00000380597.2
BLOC1S5-TXNDC5	ENST00000439343.2	n.100+448G>A		intron_variant	Intron 1 of 12	2		ENSP00000454697.1

Frequencies

GnomAD3 genomes AF: 0.726 AC: 110380 AN: 152004 Hom.: 40793 Cov.: 32

Gnomad AFR AF: 0.809

Gnomad AMI AF: 0.399

Gnomad AMR AF: 0.731

Gnomad ASJ AF: 0.582

Gnomad EAS AF: 0.996

Gnomad SAS AF: 0.779

Gnomad FIN AF: 0.719

Gnomad MID AF: 0.526

Gnomad NFE AF: 0.666

Gnomad OTH AF: 0.667

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.726 AC: 110487 AN: 152122 Hom.: 40834 Cov.: 32 AF XY: 0.730 AC XY: 54267 AN XY: 74366

African (AFR) AF: 0.809 AC: 33573 AN: 41516

American (AMR) AF: 0.732 AC: 11198 AN: 15298

Ashkenazi Jewish (ASJ) AF: 0.582 AC: 2020 AN: 3472

East Asian (EAS) AF: 0.996 AC: 5156 AN: 5176

South Asian (SAS) AF: 0.778 AC: 3758 AN: 4828

European-Finnish (FIN) AF: 0.719 AC: 7603 AN: 10572

Middle Eastern (MID) AF: 0.531 AC: 154 AN: 290

European-Non Finnish (NFE) AF: 0.666 AC: 45248 AN: 67948

Other (OTH) AF: 0.669 AC: 1415 AN: 2114

Alfa AF: 0.694 Hom.: 7047

Bravo AF: 0.730

Asia WGS AF: 0.887 AC: 3081 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.68
CADD	Benign	3.4
DANN	Benign	0.79
PhyloP100		-0.39
Mutation Taster		=100/0	polymorphism (auto)

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.060		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs2815153; hg19: chr6-8064050;