chr18-62716234-C-T

Position:

• chr18-62716234-C-T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_194449.4(PHLPP1):​c.551C>T​(p.Thr184Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000726 in 1,376,878 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 7.3e-7 (0 hom.)
• Consequence: PHLPP1 NM_194449.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.629

Genes affected

PHLPP1 (HGNC:20610): (PH domain and leucine rich repeat protein phosphatase 1) This gene encodes a member of the serine/threonine phosphatase family. The encoded protein promotes apoptosis by dephosphorylating and inactivating the serine/threonine kinase Akt, and functions as a tumor suppressor in multiple types of cancer. Increased expression of this gene may also play a role in obesity and type 2 diabetes by interfering with Akt-mediated insulin signaling. [provided by RefSeq, Dec 2011]

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.047047317).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PHLPP1	NM_194449.4	c.551C>T	p.Thr184Met	missense_variant	1/17	ENST00000262719.10	NP_919431.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PHLPP1	ENST00000262719.10	c.551C>T	p.Thr184Met	missense_variant	1/17	1	NM_194449.4	ENSP00000262719	P1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome AF: 7.26e-7 AC: 1 AN: 1376878 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 679104

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 9.29e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 31

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Apr 07, 2023

The c.551C>T (p.T184M) alteration is located in exon 1 (coding exon 1) of the PHLPP1 gene. This alteration results from a C to T substitution at nucleotide position 551, causing the threonine (T) at amino acid position 184 to be replaced by a methionine (M). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.052
BayesDel_addAF	Benign	-0.34	T
BayesDel_noAF	Benign	-0.73
CADD	Benign	16
DANN	Benign	0.95
DEOGEN2	Benign	0.058	T
Eigen	Benign	-0.99
Eigen_PC	Benign	-1.1
FATHMM_MKL	Benign	0.0075	N
LIST_S2	Benign	0.56	T
M_CAP	Uncertain	0.13	D
MetaRNN	Benign	0.047	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.0	N
MutationTaster	Benign	1.0	N;N
PrimateAI	Pathogenic	0.83	D
PROVEAN	Benign	-0.16	N
REVEL	Benign	0.023
Sift	Benign	0.19	T
Sift4G	Benign	0.17	T
Vest4		0.051
MutPred		0.18		Gain of helix (P = 0.0425);
MVP		0.068
MPC		1.6
ClinPred		0.11	T
GERP RS		0.063
Varity_R		0.018
gMVP		0.16

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr18-60383467;