5-77175638-T-A

Variant names:

• chr5-77175638-T-A
• rs2359775
• ENST00000646262.1:c.-34+57117T>A

Variant summary

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

The ENST00000646262.1(PDE8B):​c.-34+57117T>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.313 in 152,128 control chromosomes in the GnomAD database, including 9,875 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 0.31 (9875 hom., cov: 32)
• Consequence: PDE8B ENST00000646262.1 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.160
• Publications: 2 publications found

Genes affected

PDE8B (HGNC:):

PDE8B (HGNC:8794): (phosphodiesterase 8B) The protein encoded by this gene is a cyclic nucleotide phosphodiesterase (PDE) that catalyzes the hydrolysis of the second messenger cAMP. The encoded protein, which does not hydrolyze cGMP, is resistant to several PDE inhibitors. Defects in this gene are a cause of autosomal dominant striatal degeneration (ADSD). Several transcript variants encoding different isoforms have been found for this gene.[provided by RefSeq, Jul 2010]

PDE8B Gene-Disease associations (from GenCC):

• autosomal dominant striatal neurodegeneration type 1

  Inheritance: AD Classification: STRONG Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)
• pigmented nodular adrenocortical disease, primary, 3

  Inheritance: AD Classification: STRONG, LIMITED Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae)
• primary pigmented nodular adrenocortical disease

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• striatal degeneration, autosomal dominant

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• schizophrenia

  Inheritance: Unknown Classification: NO_KNOWN Submitted by: Labcorp Genetics (formerly Invitae)

ACMG classification

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

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.79).
• BA1: GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.772 is higher than 0.05.

Variant Effect in Transcripts

ACMG analysis was done for transcript: ENST00000646262.1. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PDE8B	NM_001414622.1		c.-34+57117T>A		intron	N/A	NP_001401551.1
	PDE8B	NM_001414623.1		c.-34+57117T>A		intron	N/A	NP_001401552.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PDE8B	ENST00000646262.1		c.-34+57117T>A		intron	N/A	ENSP00000493971.1

Frequencies

GnomAD3 genomes AF: 0.313 AC: 47531 AN: 152010 Hom.: 9846 Cov.: 32

Gnomad AFR AF: 0.528

Gnomad AMI AF: 0.130

Gnomad AMR AF: 0.283

Gnomad ASJ AF: 0.208

Gnomad EAS AF: 0.792

Gnomad SAS AF: 0.309

Gnomad FIN AF: 0.251

Gnomad MID AF: 0.207

Gnomad NFE AF: 0.170

Gnomad OTH AF: 0.302

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

GnomAD4 genome AF: 0.313 AC: 47609 AN: 152128 Hom.: 9875 Cov.: 32 AF XY: 0.320 AC XY: 23800 AN XY: 74376

African (AFR) AF: 0.529 AC: 21918 AN: 41468

American (AMR) AF: 0.283 AC: 4334 AN: 15294

Ashkenazi Jewish (ASJ) AF: 0.208 AC: 722 AN: 3470

East Asian (EAS) AF: 0.792 AC: 4106 AN: 5182

South Asian (SAS) AF: 0.308 AC: 1488 AN: 4828

European-Finnish (FIN) AF: 0.251 AC: 2655 AN: 10574

Middle Eastern (MID) AF: 0.209 AC: 61 AN: 292

European-Non Finnish (NFE) AF: 0.170 AC: 11562 AN: 67996

Other (OTH) AF: 0.305 AC: 644 AN: 2112

Alfa AF: 0.240 Hom.: 731

Bravo AF: 0.327

Asia WGS AF: 0.518 AC: 1799 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.79
CADD	Benign	13
DANN	Benign	0.87
PhyloP100		0.16

Splicing

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

Other links and lift over

dbSNP: rs2359775; hg19: chr5-76471463;