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
Consequence
NM_017934.7 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Pathogenic. Variant got 13 ACMG points.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes Cov.: 32
GnomAD4 exome AF: 0.00000206 AC: 3AN: 1459452Hom.: 0 Cov.: 30 AF XY: 0.00000413 AC XY: 3AN XY: 726042
GnomAD4 genome Cov.: 32
ClinVar
Submissions by phenotype
not provided Pathogenic:3
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. -
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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
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PHIP-related behavioral problems-intellectual disability-obesity-dysmorphic features syndrome Pathogenic:1
Criteria applied: PS2_MOD,PS4_MOD,PM5,PM2_SUP,PP2 -
Intellectual disability Pathogenic:1
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PHIP-related disorder Pathogenic:1
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:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at