Genetic Variant PRDM16:c.37+25C>A (chr1-3069321-C-A) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_022114.4(PRDM16):c.37+25C>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000178 in 1,123,418 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.

Frequency

Genomes: 𝑓 0.0 ( 0 hom., cov: 27)

Exomes 𝑓: 0.0000018 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

PRDM16
NM_022114.4 intron

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.240

Publications

7 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 links:

PRDM16-DT (HGNC:48664): (PRDM16 divergent transcript)

PRDM16-DT links:

LOC124903827 (HGNC:):

LOC124903827 links:

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ACMG classification

Classification was made for transcript

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 (BayesDel_noAF=-0.7).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PRDM16	NM_022114.4 link	c.37+25C>A		intron_variant	Intron 1 of 16	ENST00000270722.10	NP_071397.3	Q9HAZ2-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PRDM16	ENST00000270722.10 link	c.37+25C>A		intron_variant	Intron 1 of 16	1	NM_022114.4	ENSP00000270722.5		Q9HAZ2-1

Frequencies

GnomAD3 genomes

AF:

0.00

AC:

AN:

143092

Hom.:

Cov.:

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.00

AC:

AN:

135242

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

AF:

0.00000178

AC:

AN:

1123418

Hom.:

Cov.:

AF XY:

0.00000182

AC XY:

AN XY:

550560

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:

23236

American (AMR)

AF:

0.00

AC:

AN:

23866

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

16076

East Asian (EAS)

AF:

0.00

AC:

AN:

18920

South Asian (SAS)

AF:

0.00

AC:

AN:

52892

European-Finnish (FIN)

AF:

0.00

AC:

AN:

29762

Middle Eastern (MID)

AF:

0.00

AC:

AN:

3036

European-Non Finnish (NFE)

AF:

0.00000219

AC:

AN:

914668

Other (OTH)

AF:

0.00

AC:

AN:

40962

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.325

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Data not reliable, filtered out with message: AC0;AS_VQSR

AF:

0.00

AC:

AN:

143092

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

69478

African (AFR)

AF:

0.00

AC:

AN:

39986

American (AMR)

AF:

0.00

AC:

AN:

14628

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3362

East Asian (EAS)

AF:

0.00

AC:

AN:

4630

South Asian (SAS)

AF:

0.00

AC:

AN:

4726

European-Finnish (FIN)

AF:

0.00

AC:

AN:

7988

Middle Eastern (MID)

AF:

0.00

AC:

AN:

300

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

64618

Other (OTH)

AF:

0.00

AC:

AN:

1972

Alfa

AF:

0.00

Hom.:

731

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.70

CADD

Benign

(source)

DANN

Benign

0.84

PhyloP100

0.24

PromoterAI

0.0022

Neutral

(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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1-3069321-C-A

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over