chr6-15522987-G-C

Variant names:

• chr6-15522987-G-C
• rs972961523
• NM_032122.5:c.1044C>G

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_032122.5(DTNBP1):​c.1044C>G​(p.Asp348Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000186 in 1,614,088 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. D348D) has been classified as Likely benign.

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 33)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: DTNBP1 NM_032122.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.909
• Publications: 0 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), G2P, ClinGen

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.046626836).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_032122.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DTNBP1	NM_032122.5	MANE Select	c.1044C>G	p.Asp348Glu	missense	Exon 10 of 10	NP_115498.2
	DTNBP1	NM_001271668.2		c.993C>G	p.Asp331Glu	missense	Exon 9 of 9	NP_001258597.1	A6NFV8
	DTNBP1	NM_001271669.2		c.939C>G	p.Asp313Glu	missense	Exon 8 of 8	NP_001258598.1	A0A087WYP9

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DTNBP1	ENST00000344537.10	TSL:1 MANE Select	c.1044C>G	p.Asp348Glu	missense	Exon 10 of 10	ENSP00000341680.6	Q96EV8-1
	DTNBP1	ENST00000622898.4	TSL:1	c.939C>G	p.Asp313Glu	missense	Exon 8 of 8	ENSP00000481997.1	A0A087WYP9
	DTNBP1	ENST00000857317.1		c.1125C>G	p.Asp375Glu	missense	Exon 10 of 10	ENSP00000527376.1

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152196 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

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: 0.0000147

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461892 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 727248

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53420

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00000180 AC: 2 AN: 1112010

Other (OTH) AF: 0.00 AC: 0 AN: 60396

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152196 Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0 AN XY: 74354

African (AFR) AF: 0.00 AC: 0 AN: 41446

American (AMR) AF: 0.00 AC: 0 AN: 15278

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3468

East Asian (EAS) AF: 0.00 AC: 0 AN: 5198

South Asian (SAS) AF: 0.00 AC: 0 AN: 4826

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10624

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 68034

Other (OTH) AF: 0.00 AC: 0 AN: 2094

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.10
BayesDel_addAF	Benign	-0.34	T
BayesDel_noAF	Benign	-0.72
CADD	Benign	6.0
DANN	Benign	0.63
DEOGEN2	Benign	0.062	T
Eigen	Benign	-0.93
Eigen_PC	Benign	-0.73
FATHMM_MKL	Benign	0.50	N
LIST_S2	Benign	0.58	T
M_CAP	Benign	0.023	T
MetaRNN	Benign	0.047	T
MetaSVM	Benign	-0.95	T
MutationAssessor	Benign	0.60	N
PhyloP100		0.91
PrimateAI	Benign	0.40	T
PROVEAN	Benign	-0.33	N
REVEL	Benign	0.099
Sift	Benign	0.78	T
Sift4G	Benign	0.61	T
Polyphen		0.0050	B
Vest4		0.039
MutPred		0.060		Loss of glycosylation at S349 (P = 0.0853)
MVP		0.32
MPC		0.11
ClinPred		0.063	T
GERP RS		2.4
Varity_R		0.018
gMVP		0.011
Mutation Taster		=83/17	polymorphism

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: rs972961523; hg19: chr6-15523218;