6-15625577-C-T

Variant names:

• chr6-15625577-C-T
• rs2743868
• NM_032122.5:c.355+1766G>A

Variant summary

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

The NM_032122.5(DTNBP1):​c.355+1766G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.554 in 152,000 control chromosomes in the GnomAD database, including 24,188 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 0.55 (24188 hom., cov: 32)
• Consequence: DTNBP1 NM_032122.5 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.162
• Publications: 6 publications found

Genes affected

DTNBP1 (HGNC:17328): (dystrobrevin binding protein 1) This gene encodes a protein that may play a role in organelle biogenesis associated with melanosomes, platelet dense granules, and lysosomes. A similar protein in mouse is a component of a protein complex termed biogenesis of lysosome-related organelles complex 1 (BLOC-1), and binds to alpha- and beta-dystrobrevins, which are components of the dystrophin-associated protein complex (DPC). Mutations in this gene are associated with Hermansky-Pudlak syndrome type 7. This gene may also be associated with schizophrenia. Multiple transcript variants encoding distinct isoforms have been identified for this gene. [provided by RefSeq, Jul 2008]

DTNBP1 Gene-Disease associations (from GenCC):

• Hermansky-Pudlak syndrome 7

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), ClinGen, G2P

ACMG classification

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

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.96).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.679 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DTNBP1	NM_032122.5	c.355+1766G>A		intron_variant	Intron 5 of 9	ENST00000344537.10	NP_115498.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DTNBP1	ENST00000344537.10	c.355+1766G>A		intron_variant	Intron 5 of 9	1	NM_032122.5	ENSP00000341680.6

Frequencies

GnomAD3 genomes AF: 0.554 AC: 84198 AN: 151882 Hom.: 24158 Cov.: 32

Gnomad AFR AF: 0.686

Gnomad AMI AF: 0.488

Gnomad AMR AF: 0.535

Gnomad ASJ AF: 0.635

Gnomad EAS AF: 0.383

Gnomad SAS AF: 0.447

Gnomad FIN AF: 0.372

Gnomad MID AF: 0.624

Gnomad NFE AF: 0.523

Gnomad OTH AF: 0.589

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

GnomAD4 genome AF: 0.554 AC: 84278 AN: 152000 Hom.: 24188 Cov.: 32 AF XY: 0.545 AC XY: 40462 AN XY: 74272

African (AFR) AF: 0.686 AC: 28456 AN: 41484

American (AMR) AF: 0.535 AC: 8169 AN: 15274

Ashkenazi Jewish (ASJ) AF: 0.635 AC: 2205 AN: 3472

East Asian (EAS) AF: 0.383 AC: 1972 AN: 5154

South Asian (SAS) AF: 0.449 AC: 2164 AN: 4820

European-Finnish (FIN) AF: 0.372 AC: 3923 AN: 10550

Middle Eastern (MID) AF: 0.627 AC: 183 AN: 292

European-Non Finnish (NFE) AF: 0.523 AC: 35520 AN: 67930

Other (OTH) AF: 0.588 AC: 1242 AN: 2114

Alfa AF: 0.541 Hom.: 67299

Bravo AF: 0.572

Asia WGS AF: 0.423 AC: 1471 AN: 3472

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.96
CADD	Benign	1.5
DANN	Benign	0.30
PhyloP100		-0.16
Mutation Taster		=100/0	polymorphism (auto)

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

Other links and lift over

dbSNP: rs2743868; hg19: chr6-15625808;