Genetic Variant PRDM8:p.Gly379Gly (chr4-80202599-C-T) – ACMG Classification: Likely_benign (-3 pts)

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2BP4_StrongBP7

The NM_001099403.2(PRDM8):c.1137C>T(p.Gly379Gly) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts 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. G379G) has been classified as Benign.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

PRDM8
NM_001099403.2 synonymous

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.00300

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:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.5).

BP7

Synonymous conserved (PhyloP=-0.003 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001099403.2. 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
	PRDM8	NM_001099403.2	MANE Select	c.1137C>T	p.Gly379Gly	synonymous	Exon 4 of 4	NP_001092873.1
	PRDM8	NM_020226.4		c.1137C>T	p.Gly379Gly	synonymous	Exon 10 of 10	NP_064611.3

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
PRDM8	ENST00000415738.3	TSL:1 MANE Select	c.1137C>T	p.Gly379Gly	synonymous	Exon 4 of 4	ENSP00000406998.2
PRDM8	ENST00000339711.8	TSL:1	c.1137C>T	p.Gly379Gly	synonymous	Exon 10 of 10	ENSP00000339764.4
PRDM8	ENST00000515013.5	TSL:1	c.1137C>T	p.Gly379Gly	synonymous	Exon 10 of 10	ENSP00000425149.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00

AC:

AN:

127094

AF XY:

0.00

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

Data not reliable, filtered out with message: AC0

AF:

0.00

AC:

AN:

1380270

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

681086

African (AFR)

AF:

0.00

AC:

AN:

30970

American (AMR)

AF:

0.00

AC:

AN:

35498

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

24976

East Asian (EAS)

AF:

0.00

AC:

AN:

35330

South Asian (SAS)

AF:

0.00

AC:

AN:

78934

European-Finnish (FIN)

AF:

0.00

AC:

AN:

33482

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5672

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1077668

Other (OTH)

AF:

0.00

AC:

AN:

57740

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.50

CADD

Benign

(source)

DANN

Benign

0.97

PhyloP100

-0.0030

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

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over