NM_032122.5:c.667+3307C>T

Variant names:

• chr6-15529933-G-A
• rs9464795
• NM_032122.5:c.667+3307C>T

Variant summary

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

The NM_032122.5(DTNBP1):​c.667+3307C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.126 in 152,300 control chromosomes in the GnomAD database, including 1,536 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 0.13 (1536 hom., cov: 33)
• Consequence: DTNBP1 NM_032122.5 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.0490
• Publications: 1 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

LOC105374947 (HGNC:):

ACMG classification

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

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.9).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.224 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DTNBP1	NM_032122.5	c.667+3307C>T		intron_variant	Intron 8 of 9	ENST00000344537.10	NP_115498.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DTNBP1	ENST00000344537.10	c.667+3307C>T		intron_variant	Intron 8 of 9	1	NM_032122.5	ENSP00000341680.6

Frequencies

GnomAD3 genomes AF: 0.126 AC: 19137 AN: 152182 Hom.: 1538 Cov.: 33

Gnomad AFR AF: 0.228

Gnomad AMI AF: 0.0636

Gnomad AMR AF: 0.135

Gnomad ASJ AF: 0.0821

Gnomad EAS AF: 0.0742

Gnomad SAS AF: 0.110

Gnomad FIN AF: 0.0536

Gnomad MID AF: 0.123

Gnomad NFE AF: 0.0812

Gnomad OTH AF: 0.116

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

GnomAD4 genome AF: 0.126 AC: 19161 AN: 152300 Hom.: 1536 Cov.: 33 AF XY: 0.124 AC XY: 9246 AN XY: 74478

African (AFR) AF: 0.228 AC: 9463 AN: 41556

American (AMR) AF: 0.135 AC: 2061 AN: 15306

Ashkenazi Jewish (ASJ) AF: 0.0821 AC: 285 AN: 3470

East Asian (EAS) AF: 0.0746 AC: 386 AN: 5174

South Asian (SAS) AF: 0.110 AC: 532 AN: 4832

European-Finnish (FIN) AF: 0.0536 AC: 569 AN: 10608

Middle Eastern (MID) AF: 0.122 AC: 36 AN: 294

European-Non Finnish (NFE) AF: 0.0812 AC: 5522 AN: 68034

Other (OTH) AF: 0.118 AC: 249 AN: 2114

Alfa AF: 0.101 Hom.: 130

Bravo AF: 0.137

Asia WGS AF: 0.102 AC: 355 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.90
CADD	Benign	0.74
DANN	Benign	0.81
PhyloP100		-0.049
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: rs9464795; hg19: chr6-15530164;