Orodental Manifestations of Rare Diseases

Overview

OroDental anomalies are one of the phenotypical aspects of at least 900 rare diseases or syndromes affecting by definition less than 1 in 2000 individual within the population (almost 25 million persons in Europe). They are often described in association with other organs or system malformations, which is understandable, because the same genes and signalling pathways regulate the oral cavity formation or odontogenesis and the development of other organs. The various dental and orofacial anomalies can be classified by type (anomalies of tooth number, shape, size, structures of mineralized tissues, eruption, resorption, tumors; anomalies of oral mucosa; anomalies of tongue…), by signalling pathways and by syndrome families. These anomalies (for example hypodontia/oligodontia, amelogenesis imperfecta, dentinogenesis imperfecta…) become increasingly identified as diagnostic and predictive traits. Not only is it important to recognise, name appropriately and integrate these dysmorphic clues into the patient dysmorphology analysis but it is essential to synthesize the observations and confront them to existing data about similar orodental anomalies encountered in some of the corresponding mutant mouse models. Translational approaches in development and medicine, are relevant to gain understanding of molecular events underlying clinical manifestations and to enhance diagnostic accuracy. The aim of this study is to improve the knowledge, diagnosis and care of oral cavity pathologies encountered in rare diseases via the identification and gathering of national and international patient cohorts and to structure the molecular diagnosis behind these conditions via targeted next-generation sequencing assays. Data collection is implemented on validated accredited tools (databases) complying with the legal regulations about patient data protection and medical record collection. All information is anonymized. New effective diagnosis and therapeutic tools are being developed.

Interventions

• Other Salivary and blood samples

Primary outcome measures

• Dental history [Time frame: baseline]
• Familial history [Time frame: baseline]
• Familial genotyping [Time frame: baseline]

Eligibility criteria

Inclusion criteria

• Patient presenting with a rare disease

• New patient or patient already known in the center
• Child (in his primary dentition) or adult
• Man or woman
• Having signed a consent form or accepted to participate to the study
• Patient affiliated to social security
• Validation of the inclusion by the principal investigator looking at the patient file

Exclusion criteria

• Patient whose clinical diagnostic is not possible

• Patient whose clinical file does not contain teeth photos
• Patient who has not signed a consent form and accepted to participate to the study
• Patient who is not affiliated to social security.
• Non validation of the inclusion by the principal investigator looking at the patient file

Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.

Healthy volunteers: No

Study design

Observational model

Cohort

Study locations

France · 1 center

• BLOCH-ZUPAN Agnès — Strasbourg

Publications

• Gasse B, Prasad M, Delgado S, Huckert M, Kawczynski M, Garret-Bernardin A, Lopez-Cazaux S, Bailleul-Forestier I, Maniere MC, Stoetzel C, Bloch-Zupan A, Sire JY. Evolutionary Analysis Predicts Sensitive Positions of MMP20 and Validates Newly- and Previously-Identified MMP20 Mutations Causing Amelogenesis Imperfecta. Front Physiol. 2017 Jun 14;8:398. doi: 10.3389/fphys.2017.00398. eCollection 2017. PMID 28659819
• Rey T, Tarabeux J, Gerard B, Delbarre M, Le Bechec A, Stoetzel C, Prasad M, Laugel-Haushalter V, Kawczynski M, Muller J, Chelly J, Dollfus H, Maniere MC, Bloch-Zupan A. Protocol GenoDENT: Implementation of a New NGS Panel for Molecular Diagnosis of Genetic Disorders with Orodental Involvement. Methods Mol Biol. 2019;1922:407-452. doi: 10.1007/978-1-4939-9012-2_36. PMID 30838594
• Laugel-Haushalter V, Bar S, Schaefer E, Stoetzel C, Geoffroy V, Alembik Y, Kharouf N, Huckert M, Hamm P, Hemmerle J, Maniere MC, Friant S, Dollfus H, Bloch-Zupan A. A New SLC10A7 Homozygous Missense Mutation Responsible for a Milder Phenotype of Skeletal Dysplasia With Amelogenesis Imperfecta. Front Genet. 2019 May 28;10:504. doi: 10.3389/fgene.2019.00504. eCollection 2019. PMID 31191616
• Laugel-Haushalter V, Morkmued S, Stoetzel C, Geoffroy V, Muller J, Boland A, Deleuze JF, Chennen K, Pitiphat W, Dollfus H, Niederreither K, Bloch-Zupan A, Pungchanchaikul P. Genetic Evidence Supporting the Role of the Calcium Channel, CACNA1S, in Tooth Cusp and Root Patterning. Front Physiol. 2018 Sep 26;9:1329. doi: 10.3389/fphys.2018.01329. eCollection 2018. PMID 30319441
• Tardieu C, Jung S, Niederreither K, Prasad M, Hadj-Rabia S, Philip N, Mallet A, Consolino E, Sfeir E, Noueiri B, Chassaing N, Dollfus H, Maniere MC, Bloch-Zupan A, Clauss F. Dental and extra-oral clinical features in 41 patients with WNT10A gene mutations: A multicentric genotype-phenotype study. Clin Genet. 2017 Nov;92(5):477-486. doi: 10.1111/cge.12972. Epub 2017 Mar 19. PMID 28105635
• Prasad MK, Laouina S, El Alloussi M, Dollfus H, Bloch-Zupan A. Amelogenesis Imperfecta: 1 Family, 2 Phenotypes, and 2 Mutated Genes. J Dent Res. 2016 Dec;95(13):1457-1463. doi: 10.1177/0022034516663200. Epub 2016 Aug 24. PMID 27558265
• Schossig A, Bloch-Zupan A, Lussi A, Wolf NI, Raskin S, Cohen M, Giuliano F, Jurgens J, Krabichler B, Koolen DA, de Macena Sobreira NL, Maurer E, Muller-Bolla M, Penzien J, Zschocke J, Kapferer-Seebacher I. SLC13A5 is the second gene associated with Kohlschutter-Tonz syndrome. J Med Genet. 2017 Jan;54(1):54-62. doi: 10.1136/jmedgenet-2016-103988. Epub 2016 Sep 6. PMID 27600704
• Morkmued S, Clauss F, Schuhbaur B, Fraulob V, Mathieu E, Hemmerle J, Clevers H, Koo BK, Dolle P, Bloch-Zupan A, Niederreither K. Deficiency of the SMOC2 matricellular protein impairs bone healing and produces age-dependent bone loss. Sci Rep. 2020 Sep 9;10(1):14817. doi: 10.1038/s41598-020-71749-6. PMID 32908163

Identifiers

NCT: NCT02397824 · DC-2012-1677

Primary sources (government registries)

• ClinicalTrials.gov (US NIH)

View this study on ClinicalTrials.gov ↗