Genetic Variant PRDM16:p.Gly836Gly (chr1-3412705-C-A) – 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_022114.4(PRDM16):c.2508C>A(p.Gly836Gly) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000744 in 1,343,638 control chromosomes in the GnomAD database, with no homozygous occurrence. 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. G836G) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 7.4e-7 ( 0 hom. )

Consequence

PRDM16
NM_022114.4 synonymous

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.441

Publications

0 publications found

Variant links:

Genes affected

PRDM16 (HGNC:14000): (PR/SET domain 16) The reciprocal translocation t(1;3)(p36;q21) occurs in a subset of myelodysplastic syndrome (MDS) and acute myeloid leukemia (AML). This gene is located near the 1p36.3 breakpoint and has been shown to be specifically expressed in the t(1:3)(p36,q21)-positive MDS/AML. The protein encoded by this gene is a zinc finger transcription factor and contains an N-terminal PR domain. The translocation results in the overexpression of a truncated version of this protein that lacks the PR domain, which may play an important role in the pathogenesis of MDS and AML. Alternatively spliced transcript variants encoding distinct isoforms have been reported. [provided by RefSeq, Jul 2008]

PRDM16 Gene-Disease associations (from GenCC):

dilated cardiomyopathy
Inheritance: AD Classification: STRONG Submitted by: ClinGen
left ventricular noncompaction 8
Inheritance: AD Classification: MODERATE, LIMITED Submitted by: Illumina, Labcorp Genetics (formerly Invitae), Ambry Genetics
familial isolated dilated cardiomyopathy
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
left ventricular noncompaction
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

PRDM16 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=-0.87).

BP7

Synonymous conserved (PhyloP=-0.441 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_022114.4. 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
	PRDM16	NM_022114.4	MANE Select	c.2508C>A	p.Gly836Gly	synonymous	Exon 9 of 17	NP_071397.3
	PRDM16	NM_199454.3		c.2508C>A	p.Gly836Gly	synonymous	Exon 9 of 17	NP_955533.2	Q9HAZ2-2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
PRDM16	ENST00000270722.10	TSL:1 MANE Select	c.2508C>A	p.Gly836Gly	synonymous	Exon 9 of 17	ENSP00000270722.5	Q9HAZ2-1
PRDM16	ENST00000378391.6	TSL:1	c.2508C>A	p.Gly836Gly	synonymous	Exon 9 of 17	ENSP00000367643.2	Q9HAZ2-2
PRDM16	ENST00000512462.5	TSL:1	n.2286C>A		non_coding_transcript_exon	Exon 8 of 16

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

7.44e-7

AC:

AN:

1343638

Hom.:

Cov.:

AF XY:

0.00000152

AC XY:

AN XY:

657870

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

29408

American (AMR)

AF:

0.00

AC:

AN:

27246

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

21790

East Asian (EAS)

AF:

0.00

AC:

AN:

34962

South Asian (SAS)

AF:

0.0000140

AC:

AN:

71206

European-Finnish (FIN)

AF:

0.00

AC:

AN:

43754

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5398

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1054454

Other (OTH)

AF:

0.00

AC:

AN:

55420

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.225

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.87

CADD

Benign

0.079

(source)

DANN

Benign

0.63

PhyloP100

-0.44

Mutation Taster

=100/0

polymorphism

(source)

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

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