rs478839

Variant names:

• chr10-87972113-A-G
• rs478839
• NM_000314.8:c.*6641A>G

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_000314.8(PTEN):​c.*6641A>G variant causes a downstream gene change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.342 in 151,924 control chromosomes in the GnomAD database, including 10,097 homozygotes. 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 0.34 (10097 hom., cov: 31)
• Consequence: PTEN NM_000314.8 downstream_gene
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.926

Genes affected

PTEN (HGNC:9588): (phosphatase and tensin homolog) This gene was identified as a tumor suppressor that is mutated in a large number of cancers at high frequency. The protein encoded by this gene is a phosphatidylinositol-3,4,5-trisphosphate 3-phosphatase. It contains a tensin like domain as well as a catalytic domain similar to that of the dual specificity protein tyrosine phosphatases. Unlike most of the protein tyrosine phosphatases, this protein preferentially dephosphorylates phosphoinositide substrates. It negatively regulates intracellular levels of phosphatidylinositol-3,4,5-trisphosphate in cells and functions as a tumor suppressor by negatively regulating AKT/PKB signaling pathway. The use of a non-canonical (CUG) upstream initiation site produces a longer isoform that initiates translation with a leucine, and is thought to be preferentially associated with the mitochondrial inner membrane. This longer isoform may help regulate energy metabolism in the mitochondria. A pseudogene of this gene is found on chromosome 9. Alternative splicing and the use of multiple translation start codons results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Feb 2015]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.8).
• BA1: GnomAd4 highest subpopulation (SAS) allele frequency at 95% confidence interval = 0.622 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PTEN	NM_000314.8	c.*6641A>G		downstream_gene_variant		ENST00000371953.8	NP_000305.3
PTEN	NM_001304717.5	c.*6641A>G		downstream_gene_variant			NP_001291646.4
PTEN	NM_001304718.2	c.*6641A>G		downstream_gene_variant			NP_001291647.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PTEN	ENST00000371953.8	c.*6641A>G		downstream_gene_variant		1	NM_000314.8	ENSP00000361021.3

Frequencies

GnomAD3 genomes AF: 0.342 AC: 51944 AN: 151804 Hom.: 10096 Cov.: 31

Gnomad AFR AF: 0.153

Gnomad AMI AF: 0.507

Gnomad AMR AF: 0.344

Gnomad ASJ AF: 0.340

Gnomad EAS AF: 0.426

Gnomad SAS AF: 0.640

Gnomad FIN AF: 0.461

Gnomad MID AF: 0.285

Gnomad NFE AF: 0.410

Gnomad OTH AF: 0.330

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.342 AC: 51945 AN: 151924 Hom.: 10097 Cov.: 31 AF XY: 0.351 AC XY: 26092 AN XY: 74270

Gnomad4 AFR AF: 0.153

Gnomad4 AMR AF: 0.344

Gnomad4 ASJ AF: 0.340

Gnomad4 EAS AF: 0.426

Gnomad4 SAS AF: 0.641

Gnomad4 FIN AF: 0.461

Gnomad4 NFE AF: 0.410

Gnomad4 OTH AF: 0.326

Alfa AF: 0.400 Hom.: 25472

Bravo AF: 0.321

Asia WGS AF: 0.475 AC: 1650 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.80
CADD	Benign	3.4
DANN	Benign	0.77

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs478839; hg19: chr10-89731870;