rs121908835
Variant summary
Our verdict is Pathogenic. Variant got 19 ACMG points: 19P and 0B. PM1PM2PM5PP2PP3_StrongPP5_Very_Strong
The NM_003722.5(TP63):c.727C>T(p.Arg243Trp) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R243Q) has been classified as Pathogenic.
Frequency
Consequence
NM_003722.5 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Pathogenic. Variant got 19 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
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TP63 | NM_003722.5 | c.727C>T | p.Arg243Trp | missense_variant | Exon 5 of 14 | ENST00000264731.8 | NP_003713.3 | |
TP63 | NM_001114980.2 | c.445C>T | p.Arg149Trp | missense_variant | Exon 3 of 12 | ENST00000354600.10 | NP_001108452.1 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
TP63 | ENST00000264731.8 | c.727C>T | p.Arg243Trp | missense_variant | Exon 5 of 14 | 1 | NM_003722.5 | ENSP00000264731.3 | ||
TP63 | ENST00000354600.10 | c.445C>T | p.Arg149Trp | missense_variant | Exon 3 of 12 | 1 | NM_001114980.2 | ENSP00000346614.5 |
Frequencies
GnomAD3 genomes Cov.: 32
GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0AN: 1461658Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0AN XY: 727080
GnomAD4 genome Cov.: 32
ClinVar
Submissions by phenotype
not provided Pathogenic:5
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TP63: PS2, PM1, PM2, PM5, PS3:Moderate, PS4:Moderate, PP3 -
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Published functional studies demonstrate variant causes a complete loss of transactivation function, and prevents transcription of Hdm2, p21, Shh, and VDR proteins (Khokhar et al., 2008; Kirschner et al. 2010; Monti et al. 2013); Not observed at significant frequency in large population cohorts (gnomAD); This variant is associated with the following publications: (PMID: 10535733, 31502745, 29620206, 29802835, 29339502, 18626511, 21652629, 20543567, 18792980, 23355676, 23463580, 21078104, 22607287, 32476291, 30088137, 32881366, 28293528, 31333354, 34246755, 17224651, Savukyne_2022) -
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Ectrodactyly, ectodermal dysplasia, and cleft lip-palate syndrome 3 Pathogenic:2
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Based on the classification scheme VCGS_Germline_v1.3.4, this variant is classified as Pathogenic. Following criteria are met: 0103 - Dominant negative, loss of function and gain of function are known mechanisms of disease in this gene. Dominant negative is associated with ectrodactyly, ectodermal dysplasia, and cleft lip/palate syndrome 3 (MIM#604292), limb-mammary syndrome (MIM#603543) and ankyloblepharon‑ectodermal defects‑cleft lip/palate syndrome. While gain of function is associated with ADULT syndrome (MIM#103285), and loss of function is likely associated with orofacial cleft 8 (MIM#618149) (PMIDs: 20556892, 32476291, 29620206). (I) 0107 - This gene is associated with autosomal dominant disease. (I) 0115 - Variants in this gene are known to have variable expressivity. TP63-related conditions are known to have wide phenotypic variability even among members of the same family (PMIDs: 20556892, 32476291, 29620206). (I) 0200 - Variant is predicted to result in a missense amino acid change from arginine to tryptophan. (I) 0251 - This variant is heterozygous. (I) 0301 - Variant is absent from gnomAD (both v2 and v3). (SP) 0309 - An alternative amino acid change at the same position has been observed in gnomAD (v3) (2 heterozygotes, 0 homozygotes). (I) 0501 - Missense variant consistently predicted to be damaging by multiple in silico tools or highly conserved with a major amino acid change. (SP) 0600 - Variant is located in the annotated P53 DNA-binding domain (DECIPHER). (I) 0703 - Another missense variant comparable to the one identified in this case has moderate previous evidence for pathogenicity. p.(Arg243Gln) has been classified as pathogenic by several clinical laboratories in ClinVar. (SP) 0801 - This variant has strong previous evidence of pathogenicity in unrelated individuals. This variant has been classified as pathogenic by multiple clinical laboratories in ClinVar and has been observed in individuals with EEC3, SHFM, and ADULT syndrome in the literature (PMIDs: 32476291, 20556892). (SP) 1203 - This variant has been shown to be de novo in the proband (parental status confirmed) (by trio analysis). (SP) Legend: (SP) - Supporting pathogenic, (I) - Information, (SB) - Supporting benign -
TP63-Related Spectrum Disorders Pathogenic:1
This missense change has been observed in individual(s) with a TP63-related disease, including ectrodactyly-ectodermal dysplasia-cleft (EEC) syndrome and ADULT syndrome, in some of whom it was found de novo (PMID: 10535733, 18792980, 21078104, 22607287, 23355676). In at least one individual the variant was observed to be de novo. For these reasons, this variant has been classified as Pathogenic. This variant disrupts the p.Arg243 amino acid residue in TP63. Other variant(s) that disrupt this residue have been determined to be pathogenic (PMID: 12525544, 28293528, 29620206). This suggests that this residue is clinically significant, and that variants that disrupt this residue are likely to be disease-causing. Experimental studies have shown that this missense change affects TP63 function (PMID: 18626511, 23355676, 23463580). 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 TP63 protein function. ClinVar contains an entry for this variant (Variation ID: 6527). This variant is also known as p.Arg204Trp. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces arginine, which is basic and polar, with tryptophan, which is neutral and slightly polar, at codon 243 of the TP63 protein (p.Arg243Trp). -
Ankyloblepharon-ectodermal defects-cleft lip/palate syndrome;C1785148:Rapp-Hodgkin syndrome;C1851878:Orofacial cleft 8;C1854442:Split hand-foot malformation 4;C1858562:Ectrodactyly, ectodermal dysplasia, and cleft lip-palate syndrome 3;C1863204:ADULT syndrome;C1863753:Limb-mammary syndrome;C5830399:Premature ovarian failure 21 Pathogenic:1
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Rapp-Hodgkin syndrome Pathogenic:1
The variant is not observed in the gnomAD v2.1.1 dataset. Missense changes are a common disease-causing mechanism. In silico tool predictions suggest damaging effect of the variant on gene or gene product (REVEL: 0.95; 3Cnet: 0.99). Same nucleotide change resulting in same amino acid change has been previously reported as pathogenic/likely pathogenic with strong evidence (ClinVar ID: VCV000006527). A different missense change at the same codon (p.Arg243Gln) has been reported as pathogenic/likely pathogenic with strong evidence (ClinVar ID: VCV000006528). Therefore, this variant is classified as Pathogenic according to the recommendation of ACMG/AMP guideline. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at