rs768324201

Variant summary

Our verdict is Pathogenic. Variant got 13 ACMG points: 13P and 0B. PM2PP2PP3_ModeratePP5_Very_Strong

The NM_017934.7(PHIP):​c.328C>T​(p.Arg110Cys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000206 in 1,459,452 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★).

Frequency

Genomes: not found (cov: 32)
Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

PHIP
NM_017934.7 missense

Scores

13
3
3

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:7

Conservation

PhyloP100: 9.36
Variant links:
Genes affected
PHIP (HGNC:15673): (pleckstrin homology domain interacting protein) This gene encodes a protein that binds to the insulin receptor substrate 1 protein and regulates glucose transporter translocation in skeletal muscle cells. The encoded protein may also regulate growth and survival of pancreatic beta cells. Elevated copy number of this gene may be associated with melanoma severity and the encoded protein may promote melanoma metastasis in human patients. [provided by RefSeq, Oct 2016]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 13 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PP2
Missense variant in the PHIP gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 23 curated pathogenic missense variants (we use a threshold of 10). The gene has 29 curated benign missense variants. Gene score misZ: 5.1395 (above the threshold of 3.09). Trascript score misZ: 4.4358 (above the threshold of 3.09). GenCC associations: The gene is linked to PHIP-related behavioral problems-intellectual disability-obesity-dysmorphic features syndrome, developmental delay, intellectual disability, obesity, and dysmorphic features.
PP3
MetaRNN computational evidence supports a deleterious effect, 0.859
PP5
Variant 6-79060680-G-A is Pathogenic according to our data. Variant chr6-79060680-G-A is described in ClinVar as [Likely_pathogenic]. Clinvar id is 975951.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
PHIPNM_017934.7 linkc.328C>T p.Arg110Cys missense_variant Exon 5 of 40 ENST00000275034.5 NP_060404.4 Q8WWQ0

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
PHIPENST00000275034.5 linkc.328C>T p.Arg110Cys missense_variant Exon 5 of 40 1 NM_017934.7 ENSP00000275034.3 Q8WWQ0

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD4 exome
AF:
0.00000206
AC:
3
AN:
1459452
Hom.:
0
Cov.:
30
AF XY:
0.00000413
AC XY:
3
AN XY:
726042
show subpopulations
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:
0.00000270
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
32

ClinVar

Significance: Pathogenic/Likely pathogenic
Submissions summary: Pathogenic:7
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not provided Pathogenic:3
Aug 08, 2023
Labcorp Genetics (formerly Invitae), Labcorp
Significance: Likely pathogenic
Review Status: criteria provided, single submitter
Collection Method: clinical testing

This sequence change replaces arginine, which is basic and polar, with cysteine, which is neutral and slightly polar, at codon 110 of the PHIP protein (p.Arg110Cys). This variant is not present in population databases (gnomAD no frequency). This missense change has been observed in individual(s) with PHIP-related conditions (PMID: 29209020). In at least one individual the variant was observed to be de novo. ClinVar contains an entry for this variant (Variation ID: 975951). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt PHIP protein function. In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has been classified as Likely Pathogenic. -

Jan 21, 2019
Molecular Genetics laboratory, Necker Hospital
Significance: Pathogenic
Review Status: no assertion criteria provided
Collection Method: clinical testing

- -

Mar 23, 2022
GeneDx
Significance: Pathogenic
Review Status: criteria provided, single submitter
Collection Method: clinical testing

In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Not observed at significant frequency in large population cohorts (gnomAD); This variant is associated with the following publications: (PMID: 29209020, 28263302, 27479843) -

Inborn genetic diseases Pathogenic:1
Mar 20, 2018
Ambry Genetics
Significance: Likely pathogenic
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

PHIP-related behavioral problems-intellectual disability-obesity-dysmorphic features syndrome Pathogenic:1
Oct 01, 2024
Institute of Human Genetics, University of Leipzig Medical Center
Significance: Likely pathogenic
Review Status: criteria provided, single submitter
Collection Method: clinical testing

Criteria applied: PS2_MOD,PS4_MOD,PM5,PM2_SUP,PP2 -

Intellectual disability Pathogenic:1
-
Equipe Genetique des Anomalies du Developpement, Université de Bourgogne
Significance: Likely pathogenic
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

PHIP-related disorder Pathogenic:1
Aug 06, 2024
PreventionGenetics, part of Exact Sciences
Significance: Likely pathogenic
Review Status: no assertion criteria provided
Collection Method: clinical testing

The PHIP c.328C>T variant is predicted to result in the amino acid substitution p.Arg110Cys. This variant has been reported as a de novo variant in at least one patient with intellectual disability, developmental delays, behavioral problems, and dysmorphic facial features (Individual 10, Supplemental note, Jansen et al. 2018. PubMed ID: 29209020; Table S2, Lelieveld et al. 2016. PubMed ID: 27479843), and was also reported as de novo in a patient with autism spectrum disorder (Table S3, Yuen et al. 2017. PubMed ID: 28263302). At PreventionGenetics, we have also observed this variant to occur de novo in a patient with clinical features consistent with a PHIP-related disorder (internal data). Additionally, a different de novo variant affecting the same amino acid (p.Arg110Ser) has been reported in an individual with similar features (Individual 5, Supplemental note, Jansen et al. 2018. PubMed ID: 29209020). We interpret this variant as likely pathogenic. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
0.97
BayesDel_addAF
Pathogenic
0.28
D
BayesDel_noAF
Pathogenic
0.16
CADD
Pathogenic
33
DANN
Pathogenic
1.0
DEOGEN2
Uncertain
0.66
D
Eigen
Pathogenic
0.92
Eigen_PC
Pathogenic
0.91
FATHMM_MKL
Pathogenic
0.99
D
LIST_S2
Pathogenic
0.98
D
M_CAP
Benign
0.055
D
MetaRNN
Pathogenic
0.86
D
MetaSVM
Benign
-0.84
T
MutationAssessor
Uncertain
2.6
M
PrimateAI
Pathogenic
0.93
D
PROVEAN
Pathogenic
-6.8
D
REVEL
Uncertain
0.60
Sift
Pathogenic
0.0
D
Sift4G
Pathogenic
0.0
D
Polyphen
1.0
D
Vest4
0.82
MutPred
0.58
Loss of MoRF binding (P = 0.003);
MVP
0.82
MPC
2.9
ClinPred
1.0
D
GERP RS
5.9
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.7
Varity_R
0.59
gMVP
0.81

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.010
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

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs768324201; hg19: chr6-79770397; COSMIC: COSV51504515; API