10-87863735-G-C

Variant names:

• chr10-87863735-G-C
• rs886047384
• NM_000314.8:c.-735G>C

Variant summary

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

The NM_000314.8(PTEN):​c.-735G>C variant causes a 5 prime UTR 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. Variant has been reported in ClinVar as Uncertain significance (★★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: PTEN NM_000314.8 5_prime_UTR
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 0.933
• Publications: 0 publications found

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]

KLLN (HGNC:37212): (killin, p53 regulated DNA replication inhibitor) The protein encoded by this intronless gene is found in the nucleus, where it can inhibit DNA synthesis and promote S phase arrest coupled to apoptosis. The expression of this DNA binding protein is upregulated by transcription factor p53. [provided by RefSeq, Dec 2012]

KLLN Gene-Disease associations (from GenCC):

• Cowden disease

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• Cowden syndrome 4

  Inheritance: Unknown Classification: NO_KNOWN Submitted by: Ambry Genetics

MLDHR (HGNC:55481):

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 (BayesDel_noAF=-0.3).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000314.8. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PTEN	NM_000314.8	MANE Select	c.-735G>C		5_prime_UTR	Exon 1 of 9	NP_000305.3
	PTEN	NM_001304717.5		c.-215G>C		5_prime_UTR	Exon 1 of 10	NP_001291646.4
	PTEN	NM_001304718.2		c.-1440G>C		5_prime_UTR	Exon 1 of 9	NP_001291647.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PTEN	ENST00000371953.8	TSL:1 MANE Select	c.-735G>C		5_prime_UTR	Exon 1 of 9	ENSP00000361021.3
	PTEN	ENST00000706955.1		n.-735G>C		non_coding_transcript_exon	Exon 1 of 11	ENSP00000516675.1
	PTEN	ENST00000710265.1		n.-735G>C		non_coding_transcript_exon	Exon 1 of 10	ENSP00000518161.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 0

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not specified Uncertain:2

Jul 21, 2015

GeneDx

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant is denoted PTEN c.-734G>C, and describes a nucleotide substitution 734 base pairs upstream of the ATG translational start site in the PTEN promoter region. The surrounding sequence, with the base that is substituted in braces, is CCCG[G/C]AGCC. This variant, also called c.-733G>C using alternate numbering, has not been published in the literature to our knowledge. Variants within the PTEN core promoter region (c.-798 to c.-1238) have been observed in individuals with features of Cowden syndrome (Zhou 2003).?á While the c.-734G>C variant is outside of this core promoter region, it could still have an effect on transcription and, possibly, PTEN protein levels. Based on currently available information, it is unclear whether PTEN c.-734G>C is pathogenic or benign. We consider it to be a variant of uncertain significance.

Jun 14, 2017

Quest Diagnostics Nichols Institute San Juan Capistrano

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.30
CADD	Benign	16
DANN	Benign	0.94
PhyloP100		0.93
PromoterAI		-0.0094	Neutral
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1

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

Other links and lift over

dbSNP: rs886047384; hg19: chr10-89623492;