chr10-87863158-T-C

Variant names:

• chr10-87863158-T-C
• rs70937047
• NM_001126049.2:c.-671A>G

Variant summary

Our verdict is Benign. The variant received -8 ACMG points: 0P and 8B. BA1

This summary comes from the ClinGen Evidence Repository: PTEN c.-1311T>C (NC_000010.10:g.89622915T>C) meets criteria to be classified as benign for PTEN Hamartoma Tumor syndrome in an autosomal dominant manner using modified ACMG criteria (Mester et al. 2018; manuscript in preparation). Please see a summary of the rules and criteria codes in the “PTEN ACMG Specifications Summary” document (assertion method column).BA1: Allele frequency of 0.0142 (1.42%, 23/1618 alleles) in the African subpopulation of the gnomAD cohort. (PMID 27535533) LINK:https://erepo.genome.network/evrepo/ui/classification/CA287476/MONDO:0017623/003

• Frequency:
  • Genomes: 𝑓 0.00030 (1 hom., cov: 32)
  • Exomes 𝑓: 0.00014 (0 hom.)
• Consequence: KLLN NM_001126049.2 5_prime_UTR
• Clinical Significance: Benign reviewed by expert panel B:3
• Conservation: PhyloP100: -0.586
• Publications: 4 publications found

Genes affected

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]

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]

PTEN Gene-Disease associations (from GenCC):

• Cowden syndrome 1

  Inheritance: AD Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Ambry Genetics, Genomics England PanelApp, Labcorp Genetics (formerly Invitae), G2P
• PTEN hamartoma tumor syndrome

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
• macrocephaly-autism syndrome

  Inheritance: AD Classification: STRONG, SUPPORTIVE Submitted by: Ambry Genetics, Genomics England PanelApp, Orphanet
• renal cell carcinoma

  Inheritance: AD Classification: MODERATE Submitted by: Genomics England PanelApp
• leiomyosarcoma

  Inheritance: AR Classification: MODERATE Submitted by: Genomics England PanelApp
• activated PI3K-delta syndrome

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• Bannayan-Riley-Ruvalcaba syndrome

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• Cowden disease

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• Lhermitte-Duclos disease

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• Proteus-like syndrome

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• glioma susceptibility 2

  Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

ACMG classification

Our verdict: Benign. The variant received -8 ACMG points.

• BA1: For more information check the summary or visit ClinGen Evidence Repository.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KLLN	NM_001126049.2	c.-671A>G		5_prime_UTR_variant	Exon 1 of 1	ENST00000445946.5	NP_001119521.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KLLN	ENST00000445946.5	c.-671A>G		5_prime_UTR_variant	Exon 1 of 1	6	NM_001126049.2	ENSP00000392204.2
PTEN	ENST00000688308.1	c.-17+45T>C		intron_variant	Intron 1 of 9			ENSP00000508752.1

Frequencies

GnomAD3 genomes AF: 0.000302 AC: 46 AN: 152088 Hom.: 1 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00813

Gnomad SAS AF: 0.000829

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.000136 AC: 4 AN: 29402 Hom.: 0 Cov.: 0 AF XY: 0.000213 AC XY: 3 AN XY: 14062

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 454

American (AMR) AF: 0.00 AC: 0 AN: 260

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 908

East Asian (EAS) AF: 0.00114 AC: 3 AN: 2640

South Asian (SAS) AF: 0.00 AC: 0 AN: 126

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 15008

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 82

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 8706

Other (OTH) AF: 0.000821 AC: 1 AN: 1218

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.0249301), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome AF: 0.000302 AC: 46 AN: 152206 Hom.: 1 Cov.: 32 AF XY: 0.000497 AC XY: 37 AN XY: 74426

African (AFR) AF: 0.00 AC: 0 AN: 41532

American (AMR) AF: 0.00 AC: 0 AN: 15310

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3466

East Asian (EAS) AF: 0.00815 AC: 42 AN: 5154

South Asian (SAS) AF: 0.000829 AC: 4 AN: 4824

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10610

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 67992

Other (OTH) AF: 0.00 AC: 0 AN: 2114

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.000680

Asia WGS AF: 0.00202 AC: 7 AN: 3478

ClinVar

Significance: Benign

Submissions summary: Benign:3

Revision: reviewed by expert panel

Submissions by phenotype

not provided Benign:2

Jun 26, 2019

GeneDx

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant is associated with the following publications: (PMID: 25669429, 30311380) -

Jul 20, 2018

Quest Diagnostics Nichols Institute San Juan Capistrano

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

PTEN hamartoma tumor syndrome Benign:1

Jun 02, 2017

Clingen PTEN Variant Curation Expert Panel, Clingen

Significance: Benign

Review Status: reviewed by expert panel

Collection Method: curation

PTEN c.-1311T>C (NC_000010.10:g.89622915T>C) meets criteria to be classified as benign for PTEN Hamartoma Tumor syndrome in an autosomal dominant manner using modified ACMG criteria (Mester et al. 2018; manuscript in preparation). Please see a summary of the rules and criteria codes in the 'PTEN ACMG Specifications Summary' document (assertion method column). BA1: Allele frequency of 0.0142 (1.42%, 23/1618 alleles) in the African subpopulation of the gnomAD cohort. (PMID 27535533) -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.56
CADD	Benign	14
DANN	Benign	0.88
PhyloP100		-0.59
PromoterAI		-0.021	Neutral
Mutation Taster		=300/0	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.060		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: rs70937047; hg19: chr10-89622915;