rs374280707

Variant names:

Variant summary

Our verdict is Benign. The variant received -17 ACMG points: 0P and 17B. BP4_StrongBP6_Very_StrongBP7BS2

The NM_001099403.2(PRDM8):c.1050C>T(p.Cys350Cys) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000666 in 1,506,912 control chromosomes in the GnomAD database, including 4 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.0039 ( 3 hom., cov: 32)

Exomes 𝑓: 0.00031 ( 1 hom. )

Consequence

PRDM8
NM_001099403.2 synonymous

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: 0.574

Publications

0 publications found

Variant links:

Genes affected

PRDM8 (HGNC:13993): (PR/SET domain 8) This gene encodes a protein that belongs to a conserved family of histone methyltransferases that predominantly act as negative regulators of transcription. The encoded protein contains an N-terminal Su(var)3-9, Enhancer-of-zeste, and Trithorax (SET) domain and a double zinc-finger domain. Knockout of this gene in mouse results in mistargeting by neurons of the dorsal telencephalon, abnormal itch-like behavior, and impaired differentiation of rod bipolar cells. In humans, the protein has been shown to interact with the phosphatase laforin and the ubiquitin ligase malin, which regulate glycogen construction in the cytoplasm. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Feb 2016]

PRDM8 Gene-Disease associations (from GenCC):

early-onset Lafora body disease
Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae)

PRDM8 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -17 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.71).

BP6

Variant 4-80202512-C-T is Benign according to our data. Variant chr4-80202512-C-T is described in ClinVar as Benign. ClinVar VariationId is 475663.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=0.574 with no splicing effect.

BS2

High Homozygotes in GnomAd4 at 3 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PRDM8	NM_001099403.2 link	c.1050C>T	p.Cys350Cys	synonymous_variant	Exon 4 of 4	ENST00000415738.3	NP_001092873.1	Q9NQV8-1A0A024RDC4Q05CA1
PRDM8	NM_020226.4 link	c.1050C>T	p.Cys350Cys	synonymous_variant	Exon 10 of 10		NP_064611.3	Q9NQV8-1A0A024RDC4Q05CA1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
PRDM8	ENST00000415738.3 link	c.1050C>T	p.Cys350Cys	synonymous_variant	Exon 4 of 4	1	NM_001099403.2	ENSP00000406998.2	Q9NQV8-1
PRDM8	ENST00000339711.8 link	c.1050C>T	p.Cys350Cys	synonymous_variant	Exon 10 of 10	1		ENSP00000339764.4	Q9NQV8-1
PRDM8	ENST00000515013.5 link	c.1050C>T	p.Cys350Cys	synonymous_variant	Exon 10 of 10	1		ENSP00000425149.1	E9PEH0
PRDM8	ENST00000504452.5 link	c.1050C>T	p.Cys350Cys	synonymous_variant	Exon 8 of 8	5		ENSP00000423985.1	Q9NQV8-1

Frequencies

GnomAD3 genomes

AF:

0.00391

AC:

588

AN:

150558

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0138

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000795

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:

0.0000148

Gnomad OTH

AF:

0.00383

GnomAD2 exomes

AF:

0.000593

AC:

AN:

134828

AF XY:

0.000447

show subpopulations

Gnomad AFR exome

AF:

0.0109

Gnomad AMR exome

AF:

0.000328

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000385

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000307

AC:

417

AN:

1356208

Hom.:

Cov.:

AF XY:

0.000248

AC XY:

166

AN XY:

670134

show subpopulations

African (AFR)

AF:

0.0117

AC:

358

AN:

30582

American (AMR)

AF:

0.000374

AC:

AN:

34794

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

23588

East Asian (EAS)

AF:

0.00

AC:

AN:

32844

South Asian (SAS)

AF:

0.00

AC:

AN:

78972

European-Finnish (FIN)

AF:

0.00

AC:

AN:

32534

Middle Eastern (MID)

AF:

0.000181

AC:

AN:

5522

European-Non Finnish (NFE)

AF:

0.0000188

AC:

AN:

1061782

Other (OTH)

AF:

0.000450

AC:

AN:

55590

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.479

Heterozygous variant carriers

101

126

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

100

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00390

AC:

587

AN:

150704

Hom.:

Cov.:

AF XY:

0.00373

AC XY:

275

AN XY:

73680

show subpopulations

African (AFR)

AF:

0.0137

AC:

566

AN:

41222

American (AMR)

AF:

0.000794

AC:

AN:

15122

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

4832

South Asian (SAS)

AF:

0.00

AC:

AN:

4488

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10554

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000148

AC:

AN:

67698

Other (OTH)

AF:

0.00379

AC:

AN:

2110

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.498

Heterozygous variant carriers

114

142

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00265

Hom.:

Bravo

AF:

0.00398

ClinVar

Significance: Benign

Submissions summary: Benign:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Early-onset Lafora body disease

Benign:1

Jan 22, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not provided

Benign:1

Breakthrough Genomics, Breakthrough Genomics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:not provided

- -

PRDM8-related disorder

Benign:1

Jul 11, 2019

PreventionGenetics, part of Exact Sciences

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

This variant is classified as benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.71

CADD

Benign

9.3

(source)

DANN

Benign

0.90

PhyloP100

0.57

Mutation Taster

=100/0

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over