NM_022114.4:c.340G>T

Variant names:

• chr1-3186427-G-T
• rs749076034
• NM_022114.4:c.340G>T

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_022114.4(PRDM16):​c.340G>T​(p.Val114Leu) variant causes a missense 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. 16/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V114M) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 33)
• Consequence: PRDM16 NM_022114.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.572
• Publications: 2 publications found

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):

• left ventricular noncompaction 8

  Inheritance: AD Classification: MODERATE, LIMITED Submitted by: Ambry Genetics, Illumina, Labcorp Genetics (formerly Invitae)
• familial isolated dilated cardiomyopathy

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• left ventricular noncompaction

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• dilated cardiomyopathy

  Inheritance: AD Classification: LIMITED Submitted by: ClinGen

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.12947714).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PRDM16	NM_022114.4	c.340G>T	p.Val114Leu	missense_variant	Exon 2 of 17	ENST00000270722.10	NP_071397.3
PRDM16	NM_199454.3	c.340G>T	p.Val114Leu	missense_variant	Exon 2 of 17		NP_955533.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PRDM16	ENST00000270722.10	c.340G>T	p.Val114Leu	missense_variant	Exon 2 of 17	1	NM_022114.4	ENSP00000270722.5

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD2 exomes AF: 0.00000469 AC: 1 AN: 213108 AF XY: 0.00000859

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000345

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 Cov.: 31

GnomAD4 genome Cov.: 33

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000756

ExAC AF: 0.00000831 AC: 1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.086
BayesDel_addAF	Benign	-0.31	T
BayesDel_noAF	Benign	-0.58
CADD	Benign	0.0020
DANN	Benign	0.82
DEOGEN2	Benign	0.015	T;.;.;T
Eigen	Benign	-1.3
Eigen_PC	Benign	-1.4
FATHMM_MKL	Benign	0.15	N
LIST_S2	Benign	0.46	T;T;T;T
M_CAP	Benign	0.028	D
MetaRNN	Benign	0.13	T;T;T;T
MetaSVM	Benign	-0.99	T
MutationAssessor	Benign	0.46	.;N;.;N
PhyloP100		-0.57
PrimateAI	Benign	0.29	T
PROVEAN	Benign	-0.42	N;N;N;N
REVEL	Benign	0.055
Sift	Benign	0.19	T;T;T;T
Sift4G	Benign	0.53	T;T;T;T
Polyphen		0.0010	.;B;.;B
Vest4		0.22
MutPred		0.37		Loss of loop (P = 0.0374);Loss of loop (P = 0.0374);Loss of loop (P = 0.0374);Loss of loop (P = 0.0374);
MVP		0.50
MPC		0.34
ClinPred		0.091	T
GERP RS		-5.2
Varity_R		0.045
gMVP		0.32
Mutation Taster		=91/9	polymorphism

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

Other links and lift over

dbSNP: rs749076034; hg19: chr1-3102991; COSMIC: COSV54605228;