9-76709825-T-G

Position:

• chr9-76709825-T-G

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_015225.3(PRUNE2):​c.2449A>C​(p.Asn817His) 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. 12/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 31)
• Consequence: PRUNE2 NM_015225.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.28

Genes affected

PRUNE2 (HGNC:25209): (prune homolog 2 with BCH domain) The protein encoded by this gene belongs to the B-cell CLL/lymphoma 2 and adenovirus E1B 19 kDa interacting family, whose members play roles in many cellular processes including apotosis, cell transformation, and synaptic function. Several functions for this protein have been demonstrated including suppression of Ras homolog family member A activity, which results in reduced stress fiber formation and suppression of oncogenic cellular transformation. A high molecular weight isoform of this protein has also been shown to colocalize with Adaptor protein complex 2, beta-Adaptin and endodermal markers, suggesting an involvement in post-endocytic trafficking. In prostate cancer cells, this gene acts as a tumor suppressor and its expression is regulated by prostate cancer antigen 3, a non-protein coding gene on the opposite DNA strand in an intron of this gene. Prostate cancer antigen 3 regulates levels of this gene through formation of a double-stranded RNA that undergoes adenosine deaminase actin on RNA-dependent adenosine-to-inosine RNA editing. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2015]

PCA3 (HGNC:8637): (prostate cancer associated 3) This gene produces a spliced, long non-coding RNA that is highly overexpressed in most types of prostate cancer cells and is used as a specific biomarker for this type of cancer. This gene is embedded in an intronic region of the prune2 gene on the opposite DNA strand. The transcript regulates prune2 levels through formation of a double-stranded RNA that undergoes adenosine deaminase acting on RNA-dependent adenosine-to-inosine RNA editing. In prostate cancer derived cells, overexpression of PCA induced downregulation of prune2, leading to decreased cell proliferation. Conversely, silencing in prostate cancer cells resulted in increased proliferation. Regulation of this gene appears to be sensitive to androgen-receptor activation, a molecular signature of prostate cancer. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jan 2017]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.2521345).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PRUNE2	NM_015225.3	c.2449A>C	p.Asn817His	missense_variant	8/19	ENST00000376718.8	NP_056040.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PRUNE2	ENST00000376718.8	c.2449A>C	p.Asn817His	missense_variant	8/19	5	NM_015225.3	ENSP00000365908	P1
PCA3	ENST00000644657.1	n.736+4269T>G		intron_variant, non_coding_transcript_variant

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 61

GnomAD4 genome Cov.: 31

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.15
BayesDel_addAF	Benign	-0.11	T
BayesDel_noAF	Benign	-0.39
CADD	Benign	22
DANN	Uncertain	1.0
DEOGEN2	Benign	0.030	T;T;T
Eigen	Uncertain	0.38
Eigen_PC	Uncertain	0.39
FATHMM_MKL	Uncertain	0.92	D
LIST_S2	Benign	0.65	T;T;T
M_CAP	Benign	0.061	D
MetaRNN	Benign	0.25	T;T;T
MetaSVM	Benign	-0.87	T
MutationAssessor	Uncertain	2.4	M;.;.
MutationTaster	Benign	0.65	P;P
PrimateAI	Benign	0.41	T
PROVEAN	Benign	-2.2	N;.;N
REVEL	Benign	0.11
Sift	Pathogenic	0.0	D;.;D
Sift4G	Uncertain	0.0020	D;D;D
Polyphen		1.0	D;.;.
Vest4		0.30
MutPred		0.11		Loss of ubiquitination at K813 (P = 0.1139);Loss of ubiquitination at K813 (P = 0.1139);.;
MVP		0.53
MPC		0.13
ClinPred		0.89	D
GERP RS		5.7
Varity_R		0.40
gMVP		0.41

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

LitVar

Other links and lift over

dbSNP: rs557352; hg19: chr9-79324741;