1
|
Nnko KA, Pima RT, Baraka C, Robi EA, Rwakatema DS, Mremi A. Surgical management of mandibular ameloblastoma and immediate reconstruction with iliac crest and costochondrial bone grafts: A case report. Int J Surg Case Rep 2024; 121:110023. [PMID: 38991367 PMCID: PMC11296295 DOI: 10.1016/j.ijscr.2024.110023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2024] [Revised: 07/05/2024] [Accepted: 07/09/2024] [Indexed: 07/13/2024] Open
Abstract
INTRODUCTION AND IMPORTANCE Ameloblastoma is a benign but locally aggressive odontogenic tumor mostly occurring in the jaws. Ameloblastoma can be difficult to diagnose because it mimics other benign lesions. Its diagnosis requires a combination of imaging data, histopathological analysis, and molecular tests. Its treatment modality diverges from simple enucleation with bone curettage up to wide surgical resections. CASE PRESENTATION A 25-year-old female presented with a right-sided mandibular mass for five years. Histopathology and radiology tests confirmed it to be an ameloblastoma. A hemimandibulectomy was done, followed by immediate reconstruction using an autogenously inserted iliac crest bone and a costochondral graft as an interposition graft for the lost part. The patient had a satisfactory clinical outcome, and no sign of recurrence after a follow-up of six months. CLINICAL DISCUSSION The ideal management of ameloblastoma should minimize recurrence, restore function and appearance, and present minimal donor site morbidity. While the removal of a wide part of the bone and soft tissue leads to defects that may cause functional and aesthetic concerns, conservative management is associated with minimal downtime but high recurrence rates. Reconstructive surgery is of paramount importance for the recovery of the lost parts in these patients. CONCLUSION Radical surgery is the treatment of choice for large tumors to minimize recurrence, and immediate reconstruction utilizing grafting techniques is essential to restoring function and appearance. The autologous bone graft technique is satisfactory for immediate mandibular reconstruction as it represents a simple, easy, less costly, and reliable method for restoring mandibular continuity defects.
Collapse
Affiliation(s)
- Kanankira A Nnko
- Department of Dental Surgery, Kilimanjaro Christian Medical Centre, Moshi, Tanzania; Faculty of Medicine, Kilimanjaro Christian Medical University College, Moshi, Tanzania
| | - Raphael T Pima
- Department of Dental Surgery, Kilimanjaro Christian Medical Centre, Moshi, Tanzania
| | - Calvin Baraka
- Department of Dental Surgery, Kilimanjaro Christian Medical Centre, Moshi, Tanzania
| | - Enock A Robi
- Department of Dental Surgery, Kilimanjaro Christian Medical Centre, Moshi, Tanzania
| | - Deogratius S Rwakatema
- Department of Dental Surgery, Kilimanjaro Christian Medical Centre, Moshi, Tanzania; Faculty of Medicine, Kilimanjaro Christian Medical University College, Moshi, Tanzania
| | - Alex Mremi
- Faculty of Medicine, Kilimanjaro Christian Medical University College, Moshi, Tanzania; Department of Pathology, Kilimanjaro Christian Medical Centre, Moshi, Tanzania; Clinical Research Unit, Kilimanjaro Clinical Research Institute, Moshi, Tanzania.
| |
Collapse
|
2
|
Akinshipo AWO, Salu OB, Oluwarotimi C, Anyanwu RA, Aforka EE, Effiom OA, Omilabu SA. Low Detection of High-risk Human Papilloma Virus in Individuals with Ameloblastoma in a Tertiary Hospital in Lagos, Nigeria. Ann Afr Med 2024; 23:406-414. [PMID: 39034566 DOI: 10.4103/aam.aam_102_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 08/28/2023] [Indexed: 07/23/2024] Open
Abstract
BACKGROUND Ameloblastoma is a benign but aggressive epithelial odontogenic neoplasm of unknown etiology. The role of human papilloma virus (HPV) in the etiology of oral squamous cell carcinoma has prompted the investigation of HPV as an etiologic factor in ameloblastoma. This study aimed to determine the frequency of high-risk (HR) HPV in conventional ameloblastoma and the clinical parameters associated with infection. MATERIALS AND METHODS The study was approved by the ethical review boards of the institution. DNA was extracted from fresh tissue collected 750 μL of DNA/RNA Shield (Zymo Research, United States) using Invitrogen PureLink Viral RNA/DNA Mini Kit (Invitrogen, USA). The extracted DNA was assayed for the detection of 14 HR HPV types (16, 18, 31, 33, 35, 39, 45, 51, 52, 56, 58, 59, 66, and 68) using Anyplex™ II HPV HR Detection kit (Cat. No. HP7E00X) (Seegene Inc., Republic of Korea) on CFX-96TM Real-Time Polymerase Chain Reaction (PCR) System (Bio-Rad). Data on gender, age of patient, site of lesion, clinicohistological types of ameloblastoma and history of smoking, alcohol consumption, and practice of oral sex were collected. Data analysis was performed using analysis program SPSS version 25 and statistical significance was set at P < 0.05. RESULTS Two cases of conventional ameloblastoma were positive with HPV and none of the ameloblastic carcinoma cases were positive. The HPV 16 serotype was observed in both cases. While 5 of the cases had a history of alcohol consumption, none of these cases were positive for HPV serotype. CONCLUSIONS HPV 16 positivity was detected in two cases of conventional ameloblastomas and none in ameloblastic carcinoma using real-time PCR. There was no effect of exposure to smoking, alcohol consumption, and practice of oral sex and HPV in the etiology of ameloblastoma. Data available are suggestive of a limited role of HPV in the etiology of ameloblastoma.
Collapse
Affiliation(s)
- Abdul-Warith Olaitan Akinshipo
- Department of Oral and Maxillofacial Pathology/Biology, Faculty of Dental Sciences, College of Medicine, University of Lagos
| | - Olumuyiwa Babalola Salu
- Department of Medical Microbiology and Parasitology, Centre for Human and Zoonotic Virology, College of Medicine, University of Lagos
| | - Clement Oluwarotimi
- Department of Oral and Maxillofacial Surgery, Faculty of Dental Sciences, College of Medicine, University of Lagos
| | - Roosevelt Amaobichukwu Anyanwu
- Department of Medical Microbiology and Parasitology, Centre for Human and Zoonotic Virology, College of Medicine, University of Lagos
| | - Ernest Ebuka Aforka
- Department of Oral and Maxillofacial Pathology/Biology, Faculty of Dental Sciences, College of Medicine, University of Lagos
| | - Olajumoke Ajibola Effiom
- Department of Oral and Maxillofacial Pathology/Biology, Faculty of Dental Sciences, College of Medicine, University of Lagos
| | - Sunday Aremu Omilabu
- Department of Medical Microbiology and Parasitology, Centre for Human and Zoonotic Virology, College of Medicine, University of Lagos
| |
Collapse
|
3
|
Xie J, Zhang J, Xiong G, Ouyang S, Yun B, Xu X, Wang W, Zhang M, Xie N, Chen D, Wang C. Targeting BRD4 attenuates the stemness and aggressiveness of ameloblastoma. Oral Dis 2024; 30:3212-3224. [PMID: 37798926 DOI: 10.1111/odi.14762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 08/19/2023] [Accepted: 09/22/2023] [Indexed: 10/07/2023]
Abstract
BACKGROUND BRD4, belonging to the bromodomain extra-terminal (BET) protein family, plays a unique role in tumor progression. However, the potential impact of BRD4 in ameloblastoma (AM) remains largely unknown. Herein, we aimed to assess the expression and functional role of BRD4 in AM. METHODS The expression level of BRD4 was assessed by immunohistochemistry. The proliferation, migration, invasion, and tumorigenic abilities of AM cells were assessed by a series of assays. To explore the molecular expression profile of BRD4-depleted AM cells, RNA sequencing (RNA-seq) was performed. Bioinformatic analysis was performed on AM expression matrices obtained from the Gene Expression Omnibus (GEO). The therapeutic efficacy of BET-inhibitors (BETi) was assessed with AM patient-derived organoids. RESULTS Upregulation of BRD4 was observed in conventional AMs, recurrent AMs, and ameloblastic carcinomas. Depletion of BRD4 inhibited proliferation, invasion, migration, and tumorigenesis in AM. Administration of BETi attenuated the aggressiveness of AM and the growth of AM patient-derived organoids. Bioinformatic analysis indicated that BRD4 may promote AM progression by regulating the Wnt pathway and stemness-associated pathways. CONCLUSION BRD4 increases the aggressiveness and promotes the recurrence of ameloblastoma by regulating the Wnt pathway and stemness-associated pathways. These findings highlight BRD4 as a promising therapeutic target in AM management.
Collapse
Affiliation(s)
- Jiaxiang Xie
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Jingqi Zhang
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Gan Xiong
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Shengqi Ouyang
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Bokai Yun
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Xiuyun Xu
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Wenjin Wang
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Ming Zhang
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Nan Xie
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Demeng Chen
- Center for Translational Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Cheng Wang
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| |
Collapse
|
4
|
Zhang AB, Zhang JY, Liu YP, Wang S, Bai JY, Sun LS, Li TJ. Clinicopathological characteristics and diagnostic accuracy of BRAF mutations in ameloblastoma: A Bayesian network analysis. J Oral Pathol Med 2024; 53:393-403. [PMID: 38777565 DOI: 10.1111/jop.13542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2023] [Revised: 03/13/2024] [Accepted: 04/27/2024] [Indexed: 05/25/2024]
Abstract
OBJECTIVE This Bayesian network meta-analysis was performed to analyze the associations between clinicopathological characteristics and BRAF mutations in ameloblastoma (AM) patients and to evaluate the diagnostic accuracy. MATERIALS AND METHODS Four electronic databases were searched from 2010 to 2024. The search terms used were specific to BRAF and AM. Observational studies or randomized controlled trials were considered eligible. The incidence of BRAF mutation and corresponding clinicopathological features in AM patients were subjected to Bayesian network analyses and diagnostic accuracy evaluation. RESULTS A total of 937 AM patients from 20 studies were included. The pooled prevalence of BRAF mutations in AM patients was 72%. According to the Bayesian network analysis, BRAF mutations are more likely to occur in younger (odds ratio [OR], 2.3; credible interval [CrI]: 1.2-4.5), mandible site (OR, 3.6; 95% CrI: 2.7-5.2), and unicystic (OR, 1.6; 95% CrI: 1.1-2.4) AM patients. Similarly, higher diagnostic accuracy was found in the younger, mandible, and unicystic AM groups. CONCLUSIONS The incidence, risk, and diagnostic accuracy of BRAF mutation in AM were greater in younger patients, those with mandible involvement, and those with unicystic AM than in patients with other clinicopathological features. In addition, there was a strong concordance in the diagnostic accuracy between molecular tests and immunohistochemical analysis.
Collapse
Affiliation(s)
- Ao-Bo Zhang
- Department of Oral Pathology, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing, China
- Research Unit of Precision Pathologic Diagnosis in Tumors of the Oral and Maxillofacial Regions, Chinese Academy of Medical Sciences (2019RU034), Beijing, China
| | - Jian-Yun Zhang
- Department of Oral Pathology, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing, China
- Research Unit of Precision Pathologic Diagnosis in Tumors of the Oral and Maxillofacial Regions, Chinese Academy of Medical Sciences (2019RU034), Beijing, China
| | - Yu-Ping Liu
- Department of Oral Pathology, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing, China
- Research Unit of Precision Pathologic Diagnosis in Tumors of the Oral and Maxillofacial Regions, Chinese Academy of Medical Sciences (2019RU034), Beijing, China
| | - Shuo Wang
- Department of stomatology, Shandong Public Health Clinical Center, Jinan, Shandong, China
| | - Jia-Ying Bai
- Department of Oral Pathology, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing, China
| | - Li-Sha Sun
- Research Unit of Precision Pathologic Diagnosis in Tumors of the Oral and Maxillofacial Regions, Chinese Academy of Medical Sciences (2019RU034), Beijing, China
- Central Laboratory, Peking University School and Hospital of Stomatology, Beijing, China
| | - Tie-Jun Li
- Department of Oral Pathology, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing, China
- Research Unit of Precision Pathologic Diagnosis in Tumors of the Oral and Maxillofacial Regions, Chinese Academy of Medical Sciences (2019RU034), Beijing, China
| |
Collapse
|
5
|
Kulkarni S, Alampally H, Guddattu V, Rodrigues G, Carnelio S. Expression of Fascin and SALL4 in odontogenic cysts and tumors: an immunohistochemical appraisal. F1000Res 2024; 11:1578. [PMID: 38895097 PMCID: PMC11184278 DOI: 10.12688/f1000research.126091.3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/25/2024] [Indexed: 06/21/2024] Open
Abstract
Background Various stemness markers (SOX2, OCT4, and NANOG) have been studied in odontogenic cysts and tumors. However, studies on SALL4 having similar properties of stemness has not been documented. Additionally, insight into fascin as a migratory molecule is less explored. In this study, the expression of SALL4 and fascin were evaluated in ameloblastoma, adenomatoid odontogenic tumor (AOT), odontogenic keratocyst (OKC), dentigerous cyst (DC), radicular cyst (RC), and calcifying odontogenic cyst (COC). Methods Semi-quantitative analysis of fascin and SALL4 immuno-positive cells was done in a total of 40 cases of ameloblastoma (11 plexiform, 12 follicular, 12 unicystic, and 5 desmoplastic) variants, 6 cases of AOT, 15 each of OKC, DC, RC and 5 of COC. Chi-square test was applied to evaluate the association between SALL4 and fascin expression in odontogenic cysts and tumors. Results Fascin immunopositivity was observed in peripheral ameloblast-like cells, and the expression was weak or absent in stellate reticulum-like cells. A moderate to weak immune-reactivity to SALL4 was observed in the cytoplasm of ameloblastoma, epithelial cells of dentigerous and radicular cysts, having a marked inflammatory infiltrate, which was an interesting observation. COC and AOT had negative to weak expressions. No recurrence has been reported. Conclusions Expression of fascin in ameloblastomas elucidate their role in motility and localized invasion. Its expression in less aggressive lesions like DC, COC, AOT will incite to explore the other functional properties of fascin. SALL4 expression in the cytoplasm of odontogenic cysts and tumors may represent inactive or mutant forms which requires further validation.
Collapse
Affiliation(s)
- Spoorti Kulkarni
- Oral Pathology and Microbiology, Manipal College of Dental Sciences, Manipal Academy of Higher Education (MAHE), Manipal, Karnataka, 576104, India
| | - Harishanker Alampally
- Oral Pathology and Microbiology, Manipal College of Dental Sciences, Manipal Academy of Higher Education (MAHE), Manipal, Karnataka, 576104, India
| | - Vasudev Guddattu
- Department of Data Science, Prasanna School of Public Health, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Gabriel Rodrigues
- Department of General Surgery, Kasturba Medical College, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Sunitha Carnelio
- Oral Pathology and Microbiology, Manipal College of Dental Sciences, Manipal Academy of Higher Education (MAHE), Manipal, Karnataka, 576104, India
| |
Collapse
|
6
|
Raemy A, May L, Sala N, Diezi M, Beck-Popovic M, Broome M. Anti-MAPK Targeted Therapy for Ameloblastoma: Case Report with a Systematic Review. Cancers (Basel) 2024; 16:2174. [PMID: 38927880 PMCID: PMC11201667 DOI: 10.3390/cancers16122174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2024] [Revised: 05/30/2024] [Accepted: 06/06/2024] [Indexed: 06/28/2024] Open
Abstract
Ameloblastoma, a benign yet aggressive odontogenic tumor known for its recurrence and the severe morbidity from radical surgeries, may benefit from advancements in targeted therapy. We present a case of a 15-year-old girl with ameloblastoma successfully treated with targeted therapy and review the literature with this question: Is anti-MAPK targeted therapy safe and effective for treating ameloblastoma? This systematic review was registered in PROSPERO, adhered to PRISMA guidelines, and searched multiple databases up to December 2023, identifying 13 relevant studies out of 647 records, covering 23 patients treated with MAPK inhibitor therapies. The results were promising as nearly all patients showed a positive treatment response, with four achieving complete radiological remission and others showing substantial reductions in primary, recurrent, and metastatic ameloblastoma sizes. Side effects were mostly mild to moderate. This study presents anti-MAPK therapy as a significant shift from invasive surgical treatments, potentially enhancing life quality and clinical outcomes by offering a less invasive yet effective treatment alternative. This approach could signify a breakthrough in managing this challenging tumor, emphasizing the need for further research into molecular-targeted therapies.
Collapse
Affiliation(s)
- Anton Raemy
- Department of Maxillofacial Surgery, Lausanne University Hospital, 1011 Lausanne, Switzerland; (L.M.); (M.B.)
| | - Laurence May
- Department of Maxillofacial Surgery, Lausanne University Hospital, 1011 Lausanne, Switzerland; (L.M.); (M.B.)
| | - Nathalie Sala
- Institute of Pathology, Lausanne University Hospital, 1011 Lausanne, Switzerland;
| | - Manuel Diezi
- Department of Paediatric Oncology, Lausanne University Hospital, 1011 Lausanne, Switzerland; (M.D.); (M.B.-P.)
| | - Maja Beck-Popovic
- Department of Paediatric Oncology, Lausanne University Hospital, 1011 Lausanne, Switzerland; (M.D.); (M.B.-P.)
| | - Martin Broome
- Department of Maxillofacial Surgery, Lausanne University Hospital, 1011 Lausanne, Switzerland; (L.M.); (M.B.)
| |
Collapse
|
7
|
Chavhan A, Pakhale A, Patil S, Hande A, Tehzeeb H, Akolkar S. Ameloblastoma With the Hybrid Desmoplastic and Plexiform Pattern: A Case Report. Cureus 2024; 16:e61686. [PMID: 38975386 PMCID: PMC11226227 DOI: 10.7759/cureus.61686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2024] [Accepted: 06/04/2024] [Indexed: 07/09/2024] Open
Abstract
Ameloblastoma is an epithelial odontogenic tumor with a benign nature and demonstrates local aggressiveness. It frequently occurs between the third and fifth decades of life, showing significant gender predilection. While typically displaying a benign growth pattern, it tends to invade and sporadically metastasize locally. Ameloblastoma is predominantly found in the posterior regions. Periodic recur commonly follows insufficient treatment. Hence, conducting thorough identification of tumors and management is crucial to prevent relapse. Complications and improved prognosis are associated with meticulous surgical techniques, regular follow-up care, and early detection of recurrence. This study presented a report of a 19-year-old male with swelling in the left lower jaw, detailing its area of complaint, radiographic findings, histopathologic characteristics, and different treatment approaches. The uniqueness of the case is the hybrid histopathology of ameloblastoma composed of plexiform and desmoplastic variants.
Collapse
Affiliation(s)
- Ankita Chavhan
- Oral Pathology and Microbiology, Sharad Pawar Dental College and Hospital, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Aayushi Pakhale
- Oral Pathology and Microbiology, Sharad Pawar Dental College and Hospital, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Swati Patil
- Oral Pathology and Microbiology, Sharad Pawar Dental College and Hospital, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Alka Hande
- Oral Pathology and Microbiology, Sharad Pawar Dental College and Hospital, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Husna Tehzeeb
- Oral Pathology and Microbiology, Sharad Pawar Dental College and Hospital, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Sakshi Akolkar
- Oral Pathology and Microbiology, Sharad Pawar Dental College and Hospital, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| |
Collapse
|
8
|
Mishra S, Panda S, Mohanty N, Mishra S, Gopinath D, Panda S, Anil S. Differential Expression of Immunohistochemical Markers in Ameloblastoma & Ameloblastic Carcinoma: A Systematic Review and Meta-analysis of observational studies. F1000Res 2024; 13:557. [PMID: 39082057 PMCID: PMC11287113 DOI: 10.12688/f1000research.149861.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/20/2024] [Indexed: 08/02/2024] Open
Abstract
Background Differentiating between ameloblastoma (AB) and ameloblastic carcinoma (AC) is difficult, especially when AB has atypical cytological characteristics or an uncommon clinical history. This systematic review and meta-analysis aimed to elucidate the differential expression of immunohistochemical markers between AB and AC. Methods We conducted a thorough search of PUBMED and SCOPUS according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines to identify cross-sectional studies that compared the expression of immunohistochemical markers in AB and AC. We used a random-effects model to analyze the risk ratios and their corresponding 95% confidence intervals (CIs). The quality of the included studies was assessed using the Newcastle-Ottawa scale. The Egger's test was used to assess publication bias. Results In total, 301 articles were identified. After excluding irrelevant titles and abstracts, 86 articles were selected for full-text review. We categorized the 41 markers into proliferative and non-proliferative markers. Among non-proliferative markers, nuclear markers were differentially expressed in AB and AC. SOX2 was the only marker that significantly differentiated AB and AC, with an RR of -0.19 (CI 0.10-0.36, I2=0). Conclusion The current evidence suggests the significance of SOX2 in differentiating between AB and AC, warranting prospective confirmation in well-defined extensive studies. We highlight the paucity of high-quality replicated studies of other markers in this field. Collaborative efforts with standardized techniques are necessary to generate clinically useful immunohistochemical markers.
Collapse
Affiliation(s)
- Saleena Mishra
- Department of Oral Pathology and Microbiology, Institute of Dental Sciences, Siksha O Anusandhan University, Bhubaneswar, Odisha, India
| | - Swagatika Panda
- Department of Oral Pathology and Microbiology, Institute of Dental Sciences, Siksha O Anusandhan University, Bhubaneswar, Odisha, India
| | - Neeta Mohanty
- Department of Oral Pathology and Microbiology, Institute of Dental Sciences, Siksha O Anusandhan University, Bhubaneswar, Odisha, India
| | - Swati Mishra
- General Dental Practitioner, Odisha, 757001, India
| | - Divya Gopinath
- Centre of Medical and Bio-allied Health Sciences Research, Ajman University, Ajman, Ajman, United Arab Emirates
- Basic Medical and Dental Sciences Dept, Ajman University, Ajman, Ajman, United Arab Emirates
| | - Saurav Panda
- Department of Periodontics and Implantology, Institute of Dental Sciences, Siksha O Anusandhan University, Bhubaneswar, Odisha, India
| | - Sukumaran Anil
- Department of Dentistry, Oral Health Institute, Hamad Medical Corporation, Doha, Doha, Qatar
- Qatar University, Doha, Doha, Qatar
| |
Collapse
|
9
|
Colnot N, Savoldelli C, Afota F, Latreche S, Lupi L, Lerhe B, Fricain M. Treatment of benign maxillomandibular osteolytic lesions larger than 4 cm: A systematic review. JOURNAL OF STOMATOLOGY, ORAL AND MAXILLOFACIAL SURGERY 2024:101933. [PMID: 38823480 DOI: 10.1016/j.jormas.2024.101933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2024] [Revised: 05/21/2024] [Accepted: 05/29/2024] [Indexed: 06/03/2024]
Abstract
OBJECTIVE This systematic review aimed to assess the different treatments of benign maxillo-mandibular radiolucent bone lesions over 4 cm to propose a management algorithm. STUDY DESIGN A literature search was conducted using MEDLINE/PubMed, Scopus, Google Scholar, Virtual Health Library databases, and gray literature. Randomized or non-randomized clinical trials and case series with 10 or more patients with a minimum follow up of 1 year, published in French or English until August 2023, were included. The risk of bias was assessed for all papers included. RESULTS Of 1433 records identified, 22 were included in this review, reporting data from 1364 lesions. Ameloblastoma was the most common lesion (51.22%) and mandible was the most common site (81.21%). Initial conservative treatment was prevalent (71.04%). Recurrence was higher after conservative (13.8%) than after radical treatments (6.5%). Multilocularity, cortical perforation, dental element preservation were linked to a higher recurrence risk. CONCLUSION This study has shown importance of understanding specific characteristics and recurrence risk in benign maxillomandibular osteolytic lesions. Multidisciplinary team approval, personalized approach based on lesion type and patient are crucial. The presence of at least one risk factor could lead to therapeutic decision. Despite limitations, the study informed lesion management and provided precise recommendations.
Collapse
Affiliation(s)
- Nathan Colnot
- Department of Oral and Maxillo Facial Surgery, Head and Neck Institute, University of Côte d'Azur, Nice 06100, France.
| | - Charles Savoldelli
- Department of Oral and Maxillo Facial Surgery, Head and Neck Institute, University of Côte d'Azur, Nice 06100, France
| | - Franck Afota
- Department of Oral and Maxillo Facial Surgery, Head and Neck Institute, University of Côte d'Azur, Nice 06100, France
| | - Sarah Latreche
- Department of Oral and Maxillo Facial Surgery, Head and Neck Institute, University of Côte d'Azur, Nice 06100, France
| | - Laurence Lupi
- Department of Oral Surgery, Oral and Dental Medicine Institute, University of Côte d'Azur, Nice 06300, France
| | - Barbara Lerhe
- Department of Oral and Maxillo Facial Surgery, Head and Neck Institute, University of Côte d'Azur, Nice 06100, France; Paediatric Maxillofacial Surgery and ENT Department, Lenval Hospital, University of Côte d'Azur, Nice 06200, France
| | - Margaux Fricain
- Department of Oral and Maxillo Facial Surgery, Head and Neck Institute, University of Côte d'Azur, Nice 06100, France
| |
Collapse
|
10
|
Chujan S, Vajeethaveesin N, Satayavivad J, Kitkumthorn N. Identification of Molecular Mechanisms of Ameloblastoma and Drug Repositioning by Integration of Bioinformatics Analysis and Molecular Docking Simulation. Bioinform Biol Insights 2024; 18:11779322241256459. [PMID: 38812739 PMCID: PMC11135093 DOI: 10.1177/11779322241256459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Accepted: 05/02/2024] [Indexed: 05/31/2024] Open
Abstract
Background Ameloblastoma (AM) is a benign tumor locally originated from odontogenic epithelium that is commonly found in the jaw. This tumor makes aggressive invasions and has a high recurrence rate. This study aimed to investigate the differentially expressed genes (DEGs), biological function alterations, disease targets, and existing drugs for AM using bioinformatics analysis. Methods The data set of AM was retrieved from the GEO database (GSE132474) and identified the DEGs using bioinformatics analysis. The biological alteration analysis was applied to Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways. Protein-protein interaction (PPI) network analysis and hub gene identification were screened through NetworkAnalyst. The transcription factor-protein network was constructed via OmicsNet. We also identified candidate compounds from L1000CDS2 database. The target of AM and candidate compounds were verified using docking simulation. Results Totally, 611 DEGs were identified. The biological function enrichment analysis revealed glycosaminoglycan and GABA (γ-aminobutyric acid) signaling were most significantly up-regulated and down-regulated in AM, respectively. Subsequently, hub genes and transcription factors were screened via the network and showed FOS protein was found in both networks. Furthermore, we evaluated FOS protein to be a therapeutic target in AMs. Candidate compounds were screened and verified using docking simulation. Tanespimycin showed the greatest affinity binding value to bind FOS protein. Conclusions This study presented the underlying molecular mechanisms of disease pathogenesis, biological alteration, and important pathways of AMs and provided a candidate compound, Tanespimycin, targeting FOS protein for the treatment of AMs.
Collapse
Affiliation(s)
- Suthipong Chujan
- Laboratory of Pharmacology, Chulabhorn Research Institute, Bangkok, Thailand
- Center of Excellence on Environmental Health and Toxicology (EHT), Office of the Permanent Secretary (OPS), Ministry of Higher Education, Science, Research and Innovation (MHESI), Bangkok, Thailand
| | | | - Jutamaad Satayavivad
- Laboratory of Pharmacology, Chulabhorn Research Institute, Bangkok, Thailand
- Center of Excellence on Environmental Health and Toxicology (EHT), Office of the Permanent Secretary (OPS), Ministry of Higher Education, Science, Research and Innovation (MHESI), Bangkok, Thailand
| | - Nakarin Kitkumthorn
- Department of Oral Biology, Faculty of Dentistry, Mahidol University, Bangkok, Thailand
| |
Collapse
|
11
|
Wang Y, Xiong G, Cai W, Tao Q. METTL1 facilitates ameloblastoma invasive growth via MAPK signaling pathway. Gene 2024; 905:148234. [PMID: 38309318 DOI: 10.1016/j.gene.2024.148234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2023] [Revised: 12/18/2023] [Accepted: 01/29/2024] [Indexed: 02/05/2024]
Abstract
OBJECTIVES Ameloblastoma (AM), a common odontogenic epithelial tumor, exhibits aggressive growth due to incomplete encapsulation within the jawbone. Postoperative recurrence is a significant concern, closely associated with its invasive nature. We investigate the role of tRNA N-7 methylguanosine (m7G) modification mediated by Methyltransferase-like 1 (METTL1) in AM's invasive growth and prognosis. MATERIALS AND METHODS METTL1 expression was analyzed in diverse cell lines and clinical AM tissues. Its association with postoperative AM recurrence was examined. Functional experiments included METTL1 gene silencing using shRNA in hTERT-AM cells, assessing cell proliferation, migration, and invasion. Xenograft tumor model was constructed to investigate tumor growth. Molecular mechanisms behind METTL1's role in AM invasiveness were elucidated using Ribosome nascent-chain complex-bound mRNA sequencing (RNC-seq) and experimental analysis. RESULTS High METTL1 expression was significantly associated with postoperative recurrence in AM. The inhibition of AM development following METTL1 knockdown has been corroborated by experiments conducted both in vitro and in vivo. Analysis of RNC-seq data revealed that downregulated genes were predominantly enriched in the mitogen-activated protein kinase (MAPK) signaling pathway, suggesting that METTL1 may promote AM's invasive growth through the MAPK signaling pathway. CONCLUSION Our study elucidates the functional role of METTL1 in AM's invasive development and prognosis. High METTL1 expression is linked to postoperative recurrence, and METTL1 appears to promote AM invasiveness through the MAPK signaling pathway. These findings contribute to a better understanding of AM pathogenesis and may guide future therapeutic strategies.
Collapse
Affiliation(s)
- Yue Wang
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China; Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Gan Xiong
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China; Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Weixin Cai
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China; Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Qian Tao
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China; Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China.
| |
Collapse
|
12
|
Luo W, He W, Liang L, Liang Y, Zhang S, Liao G. The 'D-M-C' strategy for conventional ameloblastoma of the mandible: a retrospective study. Int J Oral Maxillofac Surg 2024:S0901-5027(24)00091-2. [PMID: 38670888 DOI: 10.1016/j.ijom.2024.03.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 03/08/2024] [Accepted: 03/12/2024] [Indexed: 04/28/2024]
Abstract
The purpose of this multicentre study was to evaluate the efficacy of the 'dredging-marsupialization-curettage' (D-M-C) strategy in the treatment of conventional intraosseous ameloblastoma of the mandible. A total of 31 patients from three institutions, who had a pathological diagnosis of conventional ameloblastoma of the mandible, were treated with the D-M-C strategy. The surgical protocol comprised a dredging and marsupialization (D-M) step, with additional D-M steps as required. The patients then underwent curettage (C) once an obvious effect of the D-M step had been achieved during follow-up. Eight patients were followed up for ≥36 months but <60 months, while 23 were followed up for ≥60 months. Nineteen of the 23 patients followed up for ≥60 months were disease-free at the last follow-up, with no evidence of recurrence. The D-M step is effective for reducing the tumour size and preserving vital structures. The D-M-C surgical strategy may be a feasible treatment option for conventional ameloblastoma of the mandible.
Collapse
Affiliation(s)
- W Luo
- Department of Oral and Maxillofacial Surgery, Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - W He
- Oral and Maxillofacial Surgery Department of Second Affiliated Hospital, School of Medicine, Chinese University of Hong Kong, Shenzhen, and Longgang District People's Hospital of Shenzhen, Shenzhen, China
| | - L Liang
- Department of Oral and Maxillofacial Surgery, Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, Guangdong, China
| | - Y Liang
- Department of Oral and Maxillofacial Surgery, Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - S Zhang
- Department of Oral and Maxillofacial Surgery, Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - G Liao
- Department of Oral and Maxillofacial Surgery, Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China.
| |
Collapse
|
13
|
Grynberg S, Vered M, Shapira-Frommer R, Asher N, Ben-Betzalel G, Stoff R, Steinberg Y, Amariglio N, Greenberg G, Barshack I, Toren A, Yahalom R, Schachter J, Rechavi G, Hirschhorn A, Abebe Campino G. Neoadjuvant BRAF-targeted therapy for ameloblastoma of the mandible: an organ preservation approach. J Natl Cancer Inst 2024; 116:539-546. [PMID: 37966914 DOI: 10.1093/jnci/djad232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 10/06/2023] [Accepted: 11/03/2023] [Indexed: 11/17/2023] Open
Abstract
BACKGROUND Ameloblastoma is a rare odontogenic neoplasm frequently located in the mandible. Standard treatment involves radical bone resection and immediate reconstruction, causing functional, aesthetic, and psychological impairments. The BRAF V600E mutation is present in approximately 80% of mandible ameloblastomas, and BRAF inhibitors have demonstrated sustained responses in unresectable cases. METHODS We identified ameloblastoma patients planned for ablative surgery and screened them for BRAF V600E mutation. Neoadjuvant BRAF inhibitors were offered to facilitate jaw preservation surgery. Retrospective data collection encompassed treatment regimens, tolerability, tumor response, and conversion to mandible preservation surgery. RESULTS Between 2017 and 2022, a total of 11 patients received dabrafenib (n = 6) or dabrafenib with trametinib (n = 5). The median age was 19 (range = 10-83) years. Median treatment duration was 10 (range = 3-20) months. All (100%) patients achieved a radiological response. Ten (91%) patients successfully converted to mandible preservation surgery with residual tumor enucleation. One patient attained complete radiological response, and surgery was not performed. Among the 10 surgically treated patients, all exhibited a pathological response, with 4 achieving near complete response and 6 partial response. At a median follow-up of 14 (range = 7-37) months after surgery, 1 case of recurrence was observed. Grade 1-2 adverse effects were reported in 8 (73%) patients, with a single case of grade 3 (hepatitis). Dose modification was necessary for 3 patients, and 4 experienced treatment interruptions, while 1 patient permanently discontinued therapy. CONCLUSIONS Neoadjuvant BRAF inhibition may offer a safe and effective strategy for organ preservation in mandible ameloblastoma treatment.
Collapse
Affiliation(s)
- Shirly Grynberg
- Ella Lemelbaum Institute of Immuno-Oncology and Melanoma, Sheba Medical Center, Tel Hashomer, Israel
| | - Marilena Vered
- Institue of Pathology, Sheba Medical Center, Tel Hashomer, Israel
| | - Ronnie Shapira-Frommer
- Ella Lemelbaum Institute of Immuno-Oncology and Melanoma, Sheba Medical Center, Tel Hashomer, Israel
| | - Nethanel Asher
- Ella Lemelbaum Institute of Immuno-Oncology and Melanoma, Sheba Medical Center, Tel Hashomer, Israel
| | - Guy Ben-Betzalel
- Ella Lemelbaum Institute of Immuno-Oncology and Melanoma, Sheba Medical Center, Tel Hashomer, Israel
| | - Ronen Stoff
- Ella Lemelbaum Institute of Immuno-Oncology and Melanoma, Sheba Medical Center, Tel Hashomer, Israel
| | - Yael Steinberg
- Ella Lemelbaum Institute of Immuno-Oncology and Melanoma, Sheba Medical Center, Tel Hashomer, Israel
| | - Ninette Amariglio
- Sheba Cancer Research Center, Wohl Institute of Translational Medicine, Sheba Medical Center, Tel Hashomer, Israel
| | - Gahl Greenberg
- Department of Diagnostic Imaging, Sheba Medical Center, Tel Hashomer, Israel
| | - Iris Barshack
- Institue of Pathology, Sheba Medical Center, Tel Hashomer, Israel
| | - Amos Toren
- Division of Pediatric Hemato-Oncology, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Tel Hashomer, Israel
| | - Ran Yahalom
- Department of Cranio-Maxillofacial Surgery, Sheba Medical Center, Tel Hashomer, Israel
| | - Jacob Schachter
- Ella Lemelbaum Institute of Immuno-Oncology and Melanoma, Sheba Medical Center, Tel Hashomer, Israel
| | - Gideon Rechavi
- Sheba Cancer Research Center, Wohl Institute of Translational Medicine, Sheba Medical Center, Tel Hashomer, Israel
| | - Ariel Hirschhorn
- Department of Cranio-Maxillofacial Surgery, Sheba Medical Center, Tel Hashomer, Israel
| | - Gadi Abebe Campino
- Division of Pediatric Hemato-Oncology, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Tel Hashomer, Israel
| |
Collapse
|
14
|
Sanguansin S, Kengkarn S, Klongnoi B, Chujan S, Roytrakul S, Kitkumthorn N. Exploring protein profiles and hub genes in ameloblastoma. Biomed Rep 2024; 20:64. [PMID: 38476605 PMCID: PMC10928474 DOI: 10.3892/br.2024.1752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Accepted: 02/09/2024] [Indexed: 03/14/2024] Open
Abstract
Ameloblastoma (AM) is a prominent benign odontogenic tumor characterized by aggressiveness, likely originating from tooth-generating tissue or the dental follicle (DF). However, proteomic distinctions between AM and DF remain unclear. In the present study, the aim was to identify the distinction between AM and DF in terms of their proteome and to determine the associated hub genes. Shotgun proteomics was used to compare the proteomes of seven fresh-frozen AM tissues and five DF tissues. Differentially expressed proteins (DEPs) were quantified and subsequently analyzed through Gene Ontology-based functional analysis, protein-protein interaction (PPI) analysis and hub gene identification. Among 7,550 DEPs, 520 and 216 were exclusive to AM and DF, respectively. Significant biological pathways included histone H2A monoubiquitination and actin filament-based movement in AM, as well as pro-B cell differentiation in DF. According to PPI analysis, the top-ranked upregulated hub genes were ubiquitin C (UBC), breast cancer gene 1 (BRCA1), lymphocyte cell-specific protein-tyrosine kinase (LCK), Janus kinase 1 and ATR serine/threonine kinase, whereas the top-ranked downregulated hub genes were UBC, protein kinase, DNA-activated, catalytic subunit (PRKDC), V-Myc avian myelocytomatosis viral oncogene homolog (MYC), tumor protein P53 and P21 (RAC1) activated kinase 1. When combining upregulated and downregulated genes, UBC exhibited the highest degree and betweenness values, followed by MYC, BRCA1, PRKDC, embryonic lethal, abnormal vision, Drosophila, homolog-like 1, myosin heavy chain 9, amyloid beta precursor protein, telomeric repeat binding factor 2, LCK and filamin A. In summary, these findings contributed to the knowledge on AM protein profiles, potentially aiding future research regarding AM etiopathogenesis and leading to AM prevention and treatment.
Collapse
Affiliation(s)
- Sirima Sanguansin
- Department of Oral Biology, Faculty of Dentistry, Mahidol University, Bangkok 10400, Thailand
| | - Sudaporn Kengkarn
- Department of Hematology, Faculty of Medical Technology, Rangsit University, Muang Pathumthani 12000, Thailand
| | - Boworn Klongnoi
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Mahidol University, Bangkok 10400, Thailand
| | - Suthipong Chujan
- Laboratory of Pharmacology, Chulabhorn Research Institute, Bangkok 10210, Thailand
- Center of Excellence on Environmental Health and Toxicology (EHT), Office of the Permanent Secretary (OPS), Ministry of Higher Education, Science, Research and Innovation (MHESI), Bangkok 10400, Thailand
| | - Sittirak Roytrakul
- Functional Proteomics Technology Laboratory, National Center for Genetic Engineering and Biotechnology, Khlong Luang, Pathumthani 12120, Thailand
| | - Nakarin Kitkumthorn
- Department of Oral Biology, Faculty of Dentistry, Mahidol University, Bangkok 10400, Thailand
| |
Collapse
|
15
|
Martins-de-Barros AV, da Costa Araújo FA, Barros AMI, Dos Santos EGF, Barbosa Neto AG, da Silva HAM, de Lima ELS, Muniz MTC, Neves RFSN, de Hollanda Valente RO, de Oliveira E Silva ED, de Vasconcelos Carvalho M. It was not possible to detect BRAF V600E mutation in circulating cell-free DNA from patients with ameloblastoma: A diagnostic accuracy study. J Oral Pathol Med 2024; 53:258-265. [PMID: 38494749 DOI: 10.1111/jop.13529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 01/30/2024] [Accepted: 03/05/2024] [Indexed: 03/19/2024]
Abstract
BACKGROUND The objective of this study is to evaluate the diagnostic accuracy of plasma-based liquid biopsy for the detection of the BRAF V600E mutation in circulating cell-free DNA from patients with ameloblastoma. METHODS This is a prospective diagnostic accuracy study conducted based on the Standards for Reporting Diagnostic Accuracy recommendations. The index test was the plasma-based liquid biopsy, whereas the reference standard was the conventional tissue biopsy. The target condition was the detection of BRAF V600E mutation. The study population consisted of individuals with ameloblastoma recruited from three tertiary hospitals from Brazil. A negative control group composed of three individuals with confirmed wild-type BRAF lesions were included. The participants underwent plasma circulating cell-free DNA and tumor tissue DNA isolation, and both were submitted to using competitive allele-specific TaqMan™ real-time polymerase chain reaction technology mutation detection assays. Sensitivity and specificity measures and positive and negative predictive values were calculated. RESULTS Twelve patients with conventional ameloblastoma were included. BRAF V600E mutation was detected in 11/12 (91.66%) ameloblastoma tissue samples. However, the mutation was not detected in any of the plasma-based liquid biopsy circulating cell-free DNA samples in both ameloblastomas and negative control group. The sensitivity and specificity of plasma-based liquid biopsy for the detection of the BRAF V600E mutation in circulating cell-free DNA was 0.0 and 1.0, respectively. The agreement between index test and reference standard results was 26.66%. CONCLUSION Plasma-based liquid biopsy does not seem to be an accurate method for the detection of the BRAF V600E mutation in circulating circulating cell-free DNA from patients with ameloblastoma, regardless of tumor size, anatomic location, recurrence status, and other clinicopathological features.
Collapse
Affiliation(s)
- Allan Vinícius Martins-de-Barros
- School of Dentistry, Post-Graduation Program in Dentistry, University of Pernambuco (UPE), Recife, Pernambuco, Brazil
- Centro Integrado de Anatomia Patológica (CIAP), Hospital Universitário Oswaldo Cruz (HUOC/UPE), Recife, Pernambuco, Brazil
| | - Fábio Andrey da Costa Araújo
- School of Dentistry, Post-Graduation Program in Dentistry, University of Pernambuco (UPE), Recife, Pernambuco, Brazil
- Department of Oral and Maxillofacial Surgery, Hospital Universitário Oswaldo Cruz (HUOC/UPE), Recife, Pernambuco, Brazil
| | - Ana Maria Ipólito Barros
- School of Dentistry, Post-Graduation Program in Dentistry, University of Pernambuco (UPE), Recife, Pernambuco, Brazil
- Centro Integrado de Anatomia Patológica (CIAP), Hospital Universitário Oswaldo Cruz (HUOC/UPE), Recife, Pernambuco, Brazil
| | | | - Adauto Gomes Barbosa Neto
- Instituto de Ciências Biológicas (ICB/UPE), University of Pernambuco (UPE), Recife, Pernambuco, Brazil
| | | | - Elker Lene Santos de Lima
- Instituto de Ciências Biológicas (ICB/UPE), University of Pernambuco (UPE), Recife, Pernambuco, Brazil
| | | | | | | | - Emanuel Dias de Oliveira E Silva
- School of Dentistry, Post-Graduation Program in Dentistry, University of Pernambuco (UPE), Recife, Pernambuco, Brazil
- Department of Oral and Maxillofacial Surgery, Hospital Universitário Oswaldo Cruz (HUOC/UPE), Recife, Pernambuco, Brazil
| | - Marianne de Vasconcelos Carvalho
- School of Dentistry, Post-Graduation Program in Dentistry, University of Pernambuco (UPE), Recife, Pernambuco, Brazil
- Centro Integrado de Anatomia Patológica (CIAP), Hospital Universitário Oswaldo Cruz (HUOC/UPE), Recife, Pernambuco, Brazil
| |
Collapse
|
16
|
Yang R, Lin X, Zhang W, Gokavarapu S, Lin C, Ren Z, Hu Y, Cao W, Ji T. Unicystic ameloblastoma: A retrospective study on recurrent factors from a single institute database. Oral Dis 2024; 30:1475-1482. [PMID: 36564985 DOI: 10.1111/odi.14477] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Revised: 12/01/2022] [Accepted: 12/20/2022] [Indexed: 12/25/2022]
Abstract
OBJECTIVE Unicystic ameloblastomas are a variant of ameloblastoma with a definite recurrence rate because of the biological behaviours of the tumour. The risk factors associated with disease recurrence were analysed in this retrospective study. METHODS A total of 132 patients with primary unicystic ameloblastoma reported in a tertiary hospital from 2005 to 2015 were analysed to identify the clinic-pathological and radiological factors associated with recurrence using univariate and multivariate Cox regression analyses. RESULTS The mean volume was 30.54cm3 ± 12.55 cm3, and this value differed significantly according to recurrence (p < 0.001). Root resorption and bone cortex/soft tissue invasion were also significantly associated with recurrence among unicystic ameloblastoma patients (p = 0.017 vs. p < 0.001, respectively). A new stage classification system was developed to predict disease recurrence of patients. The multivariate Cox regression analysis revealed that the new stage classification system was the only predictor of disease recurrence in unicystic ameloblastoma patients (p < 0.001), regardless of root resorption, position and site characteristics. CONCLUSIONS Volume, root resorption and bone cortex/soft tissue invasion were risk factors for disease recurrence among unicystic ameloblastoma patients. The new stage classification was an independent predictor of disease recurrence in patients with unicystic ameloblastoma.
Collapse
Affiliation(s)
- Rong Yang
- Department of Oral and Maxillofacial - Head and Neck Oncology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai, China
| | - Xiaohu Lin
- Department of Oral and Maxillofacial - Head and Neck Oncology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai, China
| | - Wenming Zhang
- Department of Oral and Maxillofacial - Head and Neck Oncology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai, China
| | - Sandhya Gokavarapu
- Department of Oral and Maxillofacial - Head and Neck Oncology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai, China
| | - Chengzhong Lin
- Department of Oral and Maxillofacial - Head and Neck Oncology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai, China
| | - Zhenhu Ren
- Department of Oral and Maxillofacial - Head and Neck Oncology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai, China
| | - Yongjie Hu
- Department of Oral and Maxillofacial - Head and Neck Oncology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai, China
| | - Wei Cao
- Department of Oral and Maxillofacial - Head and Neck Oncology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai, China
| | - Tong Ji
- Department of Oral and Maxillofacial - Head and Neck Oncology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai, China
| |
Collapse
|
17
|
Zhang CX, Man QW. Proteomics study of bone tissue around ameloblastoma and the potential mechanism of CD36 in bone remodelling. Br J Oral Maxillofac Surg 2024; 62:290-298. [PMID: 38461076 DOI: 10.1016/j.bjoms.2024.01.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 11/29/2023] [Accepted: 01/02/2024] [Indexed: 03/11/2024]
Abstract
Ameloblastoma (AM) is characterised by local aggressiveness and bone resorption. To our knowledge, the proteomic profile of bone adjacent to AM has not previously been explored. We therefore looked at the differential proteins in cancellous bone (CB) adjacent to AM and normal CB from the mandible. CB proteins were extracted, purified, quantified, and analysed by liquid chromatography-mass spectrometry (LC-MS) using samples from five patients with AM. These proteins were further investigated using gene ontology for additional functional annotation and enrichment. Proteins that met the screening requirements of expression difference ploidy > 1.5-fold (upregulation and downregulation) and p < 0.05 were subsequently deemed differential proteins. Immunohistochemical staining was performed to confirm the above findings. Compared with normal mandibular CB, 151 differential proteins were identified in CB adjacent to the mandibular AM. These were mainly linked to cellular catabolic processes, lipid metabolism, and fatty acids (FA) metabolism. LC-MS and immunohistochemistry showed that CD36 was one of the notably decreased proteins in CB bordering the AM compared with normal mandibular CB (p = 0.0066 and p = 0.0095, respectively). CD36 expression in CB correlates with bone remodelling in AM, making CD36 a viable target for therapeutic approaches.
Collapse
Affiliation(s)
- Chen-Xi Zhang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Qi-Wen Man
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, China; Department of Oral & Maxillofacial - Head Neck Oncology, School & Hospital of Stomatology, Wuhan University, Wuhan, China.
| |
Collapse
|
18
|
Xu C, Hu Y, Sun Y, Shao Q, Song Y, He J. Curettage combined with decompression for the treatment of ameloblastoma in children: report of two cases. BMC Oral Health 2024; 24:378. [PMID: 38519948 PMCID: PMC10958900 DOI: 10.1186/s12903-024-04126-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2024] [Accepted: 03/08/2024] [Indexed: 03/25/2024] Open
Abstract
BACKGROUND Ameloblastoma (AM) is the most common benign odontogenic tumor, which is more often detected in the mandible than maxilla, especially the mandibular body and mandibular angle. Pediatric AM is a rare disease, especially in patients aged 10 and younger. Compared with the mainstream osteotomy and reconstructive surgery for adult ameloblastoma, there is more room for discussion in the treatment of pediatric ameloblastoma. The postoperative functional and psychological influence can not be ignored. Especially for children in the period of growth and development, an osteotomy is often challenging to be accepted by their parents. We report two patients with ameloblastoma under 10 years old who are treated with curettage and fenestration, which is a beneficial method for children with ameloblastoma. CASE PRESENTATION We present two cases of classic ameloblastoma in children. We describe in detail the patients' characteristics, treatment processes, and follow-up result. The bone formation and reconstruction in the lesion area after fenestration decompression and curettage are recorded at every clinic review. The surgical details and principles of curettage and decompression are also described and discussed. The two patients have good bone shape recovery and no recurrence. CONCLUSIONS Children are in the growth and development period and possess an extremely strong ability of bone formation and reconstruction. Based on the principles of minimally invasive and functional preservation, we believe that curettage combined with decompression can be the first choice for treating AM in children, especially for mandibular lesions.
Collapse
Affiliation(s)
- Chen Xu
- Department of Oral and Maxillofacial Surgery, Zibo Central Hospital, Zibo, 255036, China
| | - Yuhua Hu
- Department of Oral Pathology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology, Shanghai, China
- National Clinical Research Center for Oral Diseases, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai, China
- Shanghai Research Institute of Stomatology, Shanghai, China
- Shanghai Center of Head and Neck Oncology Clinical and Translational Science, Shanghai, China
| | - Yuhuan Sun
- Department of Oral and Maxillofacial Surgery, Zibo Central Hospital, Zibo, 255036, China
| | - Qiang Shao
- Department of Oral and Maxillofacial Surgery, Zibo Central Hospital, Zibo, 255036, China
| | - Yonghai Song
- Department of Oral and Maxillofacial Surgery, Zibo Central Hospital, Zibo, 255036, China.
| | - Jie He
- Department of Oral and Maxillofacial Surgery, Zibo Central Hospital, Zibo, 255036, China.
- Department of Oral and Maxillofacial-Head and Neck Oncology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China.
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China.
- National Center for Stomatology, Shanghai, China.
- National Clinical Research Center for Oral Diseases, Shanghai, China.
- Shanghai Key Laboratory of Stomatology, Shanghai, China.
- Shanghai Research Institute of Stomatology, Shanghai, China.
- Shanghai Center of Head and Neck Oncology Clinical and Translational Science, Shanghai, China.
| |
Collapse
|
19
|
Martins-de-Barros AV, da Costa Araújo FA, Faro TF, de Aquino AAT, Barbosa Neto AG, da Silva HAM, de Lima ELS, Muniz MTC, de Oliveira E Silva ED, de Vasconcelos Carvalho M. BRAF p.V600E Mutational Status Does Not Correlate with Biological Behavior in Conventional Ameloblastomas: A Disease-Free Survival Analysis. Head Neck Pathol 2024; 18:23. [PMID: 38504068 PMCID: PMC10951168 DOI: 10.1007/s12105-024-01621-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Accepted: 01/27/2024] [Indexed: 03/21/2024]
Abstract
BACKGROUND Dysregulation of the MAPK pathway appears to exert a pivotal role in the pathogenesis of ameloblastomas, since BRAF p.V600E has been reported in over 65% of the tumors. Therefore, the purpose of this study was to investigate whether the BRAF p.V600E is related to biological behavior and disease-free survival in patients with conventional ameloblastomas. METHODS This is a retrospective cohort study based on the STROBE (Strengthening the Reporting of Observational Studies in Epidemiology) recommendations. The study population consisted of individuals treated for conventional ameloblastomas. Clinical, imaging, histomorphological, immunohistochemical (Ki67 and CD138/syndecan-1), and molecular BRAF p.V600E mutation analyses were performed. Bivariate statistical analysis was performed through chi-square and Fisher's exact tests. Kaplan-Meier analysis with log-rank test and Cox proportional hazards regression were used to identify predictors of disease-free survival, with a significance level of 5%. RESULTS Forty-one individuals were included, with a male-to-female ratio of 1.15:1. BRAF p.V600E mutation was identified in 75.6% of the tumors. No association between the BRAF mutational status and other clinical, imaging, histomorphological, and immunohistochemical variables was observed. Only the initial treatment modality was significantly associated with a better prognosis in univariate (p = 0.008) and multivariate (p = 0.030) analyses, with a hazard ratio of 9.60 (95%IC = 1.24-73.89), favoring radical treatment. CONCLUSION BRAF p.V600E mutation emerges as a prevalent molecular aberration in ameloblastomas. Nevertheless, it does not seem to significantly affect the tumor proliferative activity, CD138/syndecan-1-mediated cell adhesion, or disease-free survival outcomes.
Collapse
Affiliation(s)
| | - Fábio Andrey da Costa Araújo
- Post-Graduation Program in Dentistry, School of Dentistry, University of Pernambuco (UPE), Recife, Pernambuco, Brazil.
- Department of Oral and Maxillofacial Surgery, Hospital Universitário Oswaldo Cruz (HUOC/UPE), Recife, Pernambuco, Brazil.
- Department of Oral and Maxillofacial Surgery, School of Dentistry, University of Pernambuco, Rua Arnóbio Marquês, 310, Santo Amaro, Recife, Pernambuco, 50100-130, Brazil.
| | - Tatiane Fonseca Faro
- Post-Graduation Program in Dentistry, School of Dentistry, University of Pernambuco (UPE), Recife, Pernambuco, Brazil
| | | | - Adauto Gomes Barbosa Neto
- Instituto de Ciências Biológicas (ICB/UPE), University of Pernambuco (UPE), Recife, Pernambuco, Brazil
| | | | - Elker Lene Santos de Lima
- Instituto de Ciências Biológicas (ICB/UPE), University of Pernambuco (UPE), Recife, Pernambuco, Brazil
| | | | - Emanuel Dias de Oliveira E Silva
- Post-Graduation Program in Dentistry, School of Dentistry, University of Pernambuco (UPE), Recife, Pernambuco, Brazil
- Department of Oral and Maxillofacial Surgery, Hospital Universitário Oswaldo Cruz (HUOC/UPE), Recife, Pernambuco, Brazil
| | - Marianne de Vasconcelos Carvalho
- Post-Graduation Program in Dentistry, School of Dentistry, University of Pernambuco (UPE), Recife, Pernambuco, Brazil
- Centro Integrado de Anatomia Patológica (CIAP), Hospital Universitário Oswaldo Cruz (HUOC/UPE), Recife, Pernambuco, Brazil
| |
Collapse
|
20
|
da Costa Sousa MG, Vignolo SM, Franca CM, Mereness J, Alves Fraga MA, Silva-Sousa AC, Benoit DSW, Bertassoni LE. Engineering models of head and neck and oral cancers on-a-chip. BIOMICROFLUIDICS 2024; 18:021502. [PMID: 38464668 PMCID: PMC10919958 DOI: 10.1063/5.0186722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Accepted: 02/20/2024] [Indexed: 03/12/2024]
Abstract
Head and neck cancers (HNCs) rank as the sixth most common cancer globally and result in over 450 000 deaths annually. Despite considerable advancements in diagnostics and treatment, the 5-year survival rate for most types of HNCs remains below 50%. Poor prognoses are often attributed to tumor heterogeneity, drug resistance, and immunosuppression. These characteristics are difficult to replicate using in vitro or in vivo models, culminating in few effective approaches for early detection and therapeutic drug development. Organs-on-a-chip offer a promising avenue for studying HNCs, serving as microphysiological models that closely recapitulate the complexities of biological tissues within highly controllable microfluidic platforms. Such systems have gained interest as advanced experimental tools to investigate human pathophysiology and assess therapeutic efficacy, providing a deeper understanding of cancer pathophysiology. This review outlines current challenges and opportunities in replicating HNCs within microphysiological systems, focusing on mimicking the soft, glandular, and hard tissues of the head and neck. We further delve into the major applications of organ-on-a-chip models for HNCs, including fundamental research, drug discovery, translational approaches, and personalized medicine. This review emphasizes the integration of organs-on-a-chip into the repertoire of biological model systems available to researchers. This integration enables the exploration of unique aspects of HNCs, thereby accelerating discoveries with the potential to improve outcomes for HNC patients.
Collapse
Affiliation(s)
| | | | | | - Jared Mereness
- Departments of Biomedical Engineering and Dermatology and Center for Musculoskeletal Research, University of Rochester, 601 Elmwood Ave, Rochester, New York 14642, USA
| | | | - Alice Corrêa Silva-Sousa
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo. Av. do Café - Subsetor Oeste—11 (N-11), Ribeirão Preto, SP, 14040-904, Brazil
| | | | | |
Collapse
|
21
|
Xiong G, Xie N, Nie M, Ling R, Yun B, Xie J, Ren L, Huang Y, Wang W, Yi C, Zhang M, Xu X, Zhang C, Zou B, Zhang L, Liu X, Huang H, Chen D, Cao W, Wang C. Single-cell transcriptomics reveals cell atlas and identifies cycling tumor cells responsible for recurrence in ameloblastoma. Int J Oral Sci 2024; 16:21. [PMID: 38424060 PMCID: PMC10904398 DOI: 10.1038/s41368-024-00281-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2023] [Revised: 01/04/2024] [Accepted: 01/05/2024] [Indexed: 03/02/2024] Open
Abstract
Ameloblastoma is a benign tumor characterized by locally invasive phenotypes, leading to facial bone destruction and a high recurrence rate. However, the mechanisms governing tumor initiation and recurrence are poorly understood. Here, we uncovered cellular landscapes and mechanisms that underlie tumor recurrence in ameloblastoma at single-cell resolution. Our results revealed that ameloblastoma exhibits five tumor subpopulations varying with respect to immune response (IR), bone remodeling (BR), tooth development (TD), epithelial development (ED), and cell cycle (CC) signatures. Of note, we found that CC ameloblastoma cells were endowed with stemness and contributed to tumor recurrence, which was dominated by the EZH2-mediated program. Targeting EZH2 effectively eliminated CC ameloblastoma cells and inhibited tumor growth in ameloblastoma patient-derived organoids. These data described the tumor subpopulation and clarified the identity, function, and regulatory mechanism of CC ameloblastoma cells, providing a potential therapeutic target for ameloblastoma.
Collapse
Affiliation(s)
- Gan Xiong
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Nan Xie
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Min Nie
- Department of Periodontics, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou, China
| | - Rongsong Ling
- Institute for Advanced Study, Shenzhen University, Shenzhen, China
| | - Bokai Yun
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Jiaxiang Xie
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Linlin Ren
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Yaqi Huang
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Wenjin Wang
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Chen Yi
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Ming Zhang
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Xiuyun Xu
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Caihua Zhang
- Center for Translational Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Bin Zou
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Leitao Zhang
- Department of Oral and Maxillofacial Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Xiqiang Liu
- Department of Oral and Maxillofacial Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Hongzhang Huang
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Demeng Chen
- Center for Translational Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Wei Cao
- Department of Oral and Maxillofacial & Head and Neck Oncology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
- National Center for Stomatology, National Clinical Research Center for Oral diseases, Shanghai Key Laboratory of Stomatology, Shanghai, China.
| | - Cheng Wang
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China.
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China.
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China.
| |
Collapse
|
22
|
Zhang CX, Zhang LZ, Lin H, Man QW, Liu B. BRAF V600E mutation mediates invasive and growth features in ameloblastoma. Oral Dis 2024. [PMID: 38424736 DOI: 10.1111/odi.14909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 12/16/2023] [Accepted: 02/14/2024] [Indexed: 03/02/2024]
Abstract
OBJECTIVES Ameloblastoma (AM), a locally aggressive tumor with extensive growth capacity, causes significant damage to the jaw and affects facial appearance. Although the high prevalence of BRAF V600E mutation in AM is known, its specific impacts on patients with AM remain unclear. Thus, the present study investigated the role of BRAF V600E mutation, thereby focusing on its impact on AM invasion and growth. MATERIALS AND METHODS Immunohistochemical analysis was used to compare BRAF V600E, MMP2, MMP9, and Ki-67 expressions in AM (n = 49), normal oral mucosa (NOM) (n = 10), and odontogenic keratocyst (OKC) (n = 15) tissues. AM was further classified according to the presence or absence of BRAF V600E. The relationship between BRAF V600E and invasion as well as growth was evaluated. In addition, correlation analysis was performed using immunohistochemistry and confirmed via double-labeling immunofluorescence. Finally, comparative analyses using mass spectrometry, immunohistochemistry, and immunofluorescence were performed to explore and identify underlying mechanisms. RESULTS AM exhibited a higher incidence of BRAF V600E mutation than NOM and OKC. BRAF V600E expression was positively correlated with the invasion-associated proteins MMP2 and MMP9 and the growth-related protein Ki-67. Proteomic data revealed that BRAF V600E primarily activates the MAPK signaling pathway in AM, particularly driving the phosphorylation of extracellular signal-regulated kinase 1/2 (ERK1/2). CONCLUSIONS In summary, the findings suggested that the BRAF V600E mutation enhances the invasion and growth abilities of AM via the MAPK/ERK signaling pathway. Thus, targeting BRAF V600E or the MAPK/ERK pathway may be a potential AM therapy.
Collapse
Affiliation(s)
- Chen-Xi Zhang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Lin-Zhou Zhang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Hao Lin
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Qi-Wen Man
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, China
- Department of Oral Maxillofacial Head Neck Oncology, School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Bing Liu
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, China
- Department of Oral Maxillofacial Head Neck Oncology, School and Hospital of Stomatology, Wuhan University, Wuhan, China
| |
Collapse
|
23
|
Vieira Costa R, Balbinot KM, da Silveira GCAR, Kataoka MSDS, de Menezes SAF, Freitas VM, Vasconcelos ACU, Etges A, Martins Montalli VA, Santos FP, Alves Júnior SDM, Jaeger RG, Pinheiro JDJV. Prognostic value of the expression and localization of cell proliferation and apoptosis markers in unicystic ameloblastomas. Sci Rep 2024; 14:3856. [PMID: 38360984 PMCID: PMC10869795 DOI: 10.1038/s41598-024-54132-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Accepted: 02/08/2024] [Indexed: 02/17/2024] Open
Abstract
The aim of this study was to verify whether the expression of cell proliferation and apoptosis markers in different types of unicystic ameloblastoma (UA) is associated with the location of neoplastic cells. Immunohistochemical study with a sample of 32 cases of UA, 11 cases of conventional ameloblastoma (CAM) and ten dental follicles (DF) cases was performed. Cell proliferation was assessed using Ki-67 status, and apoptosis by caspase-3 expression. Mural UA (MUA) showed a higher immunostaining of Ki-67 (p < 0.05) and a lower immunostaining of Caspase-3 (p < 0.05) compared with luminal and intraluminal subtypes of UA and CAM. The neoplastic cells of the MUA's cystic capsule showed a higher expression of Ki-67 protein (p < 0.0001) and a lower expression of Caspase-3 (p < 0.0001) compared with the lumen. DF showed lower Ki-67 and Caspase-3 immunostaining (p < 0.05) than neoplasms. The higher immunoexpression of Ki-67 and the lower immunoexpression of Caspase-3 in MUA, in the parenchyma cells within the cystic capsule, suggest an association between the biological behaviour and location of neoplastic cells in a tumour.
Collapse
Affiliation(s)
- Rebeca Vieira Costa
- Laboratory of Pathological Anatomy and Immunohistochemistry, School of Dentistry, Federal University of Pará, Rua Augusto Corrêa, 01, Belém, Pará, 66075-110, Brazil
| | - Karolyny Martins Balbinot
- Laboratory of Pathological Anatomy and Immunohistochemistry, School of Dentistry, Federal University of Pará, Rua Augusto Corrêa, 01, Belém, Pará, 66075-110, Brazil
| | | | - Maria Sueli da Silva Kataoka
- Cell Culture Laboratory, School of Dentistry, Federal University of Pará, Rua Augusto Corrêa, 01, Belém, Pará, 66075-110, Brazil
| | | | - Vanessa Morais Freitas
- Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Ana Carolina Uchoa Vasconcelos
- Center for the Diagnosis of Diseases of the Mouth, School of Dentistry, Federal University of Pelotas, Rua Gonçalves Chaves, 457/607, Pelotas, Rio Grande do Sul, 96015-560, Brazil
| | - Adriana Etges
- Center for the Diagnosis of Diseases of the Mouth, School of Dentistry, Federal University of Pelotas, Rua Gonçalves Chaves, 457/607, Pelotas, Rio Grande do Sul, 96015-560, Brazil
| | - Victor Angelo Martins Montalli
- Department of Oral Pathology, São Leopoldo Mandic Institute and Research Center, Rua Dr. José Rocha Junqueira, 13-Pte. Preta, Campinas, SP, 13045-755, Brazil
| | - Fabricio Passador Santos
- Department of Oral Pathology, São Leopoldo Mandic Institute and Research Center, Rua Dr. José Rocha Junqueira, 13-Pte. Preta, Campinas, SP, 13045-755, Brazil
| | - Sérgio de Melo Alves Júnior
- Laboratory of Pathological Anatomy and Immunohistochemistry, School of Dentistry, Federal University of Pará, Rua Augusto Corrêa, 01, Belém, Pará, 66075-110, Brazil
| | - Ruy Gastaldoni Jaeger
- Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - João de Jesus Viana Pinheiro
- Cell Culture Laboratory, School of Dentistry, Federal University of Pará, Rua Augusto Corrêa, 01, Belém, Pará, 66075-110, Brazil.
| |
Collapse
|
24
|
Akinshipo AWO, Shanti RM, Adisa AO, Effiom OA, Adebiyi KE, Carrasco LR, Kaleem A, Arotiba GT, Akintoye SO. Time to Recurrence of Ameloblastoma and Associated Factors in a Multi-institutional Black Patient Cohort. J Racial Ethn Health Disparities 2024:10.1007/s40615-024-01927-z. [PMID: 38324239 DOI: 10.1007/s40615-024-01927-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 12/31/2023] [Accepted: 01/31/2024] [Indexed: 02/08/2024]
Abstract
Ameloblastoma is a highly recurrent odontogenic neoplasm with variable global distribution. However, impact of race and ethnicity on ameloblastoma recurrence are still unclear. The primary aim of this study was to assess duration of time between primary and recurrent ameloblastomas in a predominantly Black multi-institutional patient cohort and secondarily to determine whether recurrent ameloblastomas are more readily discovered when clinically-symptomatic rather than by radiographic surveillance. A retrospective cross-sectional design was used to evaluate demographic, clinical, and pathological information on recurrent ameloblastomas patients. Outcome variable was time to recurrence, determined as period between the diagnosis of primary and recurrent ameloblastomas. We assessed associations between outcome variable and race, time lapse between primary and recurrent ameloblastomas and clinical symptoms of recurrent ameloblastomas at time of diagnosis. Among 115 recurrent ameloblastomas identified, 90.5% occurred in adults, 91.3% in Blacks, and similarly, 91.3% were conventional ameloblastomas. About 41% affected the posterior mandible. 93.9% were clinically symptomatic at time of presentation while 6.1% non-symptomatic lesions were discovered by routine diagnostic radiology. Median time to presentation of recurrent tumor was significantly longer in females (90 months, p = 0.016) and clinically symptomatic group of ameloblastoma patients (75 months, p = 0.023). Ameloblastoma recurrence was distinctively high in Black patients, occurred faster in males than females and was located mostly in the posterior mandible. Concomitant with delayed access to healthcare of Black individuals, routine post-surgical follow-up is essential because time lag between primary and recurrence tumors was longer in clinically symptomatic ameloblastomas at the time of diagnosis.
Collapse
Affiliation(s)
- Abdul-Warith O Akinshipo
- Department of Oral and Maxillofacial Pathology/Biology, Faculty of Dental Sciences, University of Lagos, Lagos, Nigeria
| | - Rabie M Shanti
- Department of Oral and Maxillofacial Surgery, Rutgers School of Dental Medicine, Newark, NJ, USA
| | - Akinyele O Adisa
- Department of Oral Pathology, University of Ibadan and University College Hospital Ibadan, Ibadan, Nigeria
| | - Olajumoke A Effiom
- Department of Oral and Maxillofacial Pathology/Biology, Faculty of Dental Sciences, University of Lagos, Lagos, Nigeria
| | - Kehinde E Adebiyi
- Department of Oral Pathology & Oral Medicine, Faculty of Dentistry, Lagos State University College of Medicine Lagos, Lagos, Nigeria
| | - Lee R Carrasco
- Department of Oral and Maxillofacial Surgery, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Arshad Kaleem
- Head and Neck Oncology and Microvascular Surgery, High Desert Oral and Facial Surgery, El Paso, TX, USA
| | - Godwin T Arotiba
- Department of Oral and Maxillofacial Surgery, Faculty of Dental Sciences, University of Lagos, Lagos, Nigeria
| | - Sunday O Akintoye
- Department of Oral Medicine, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA.
| |
Collapse
|
25
|
Smit C, Robinson L, Ker-Fox J, Fonseca FP, van Heerden WFP, Uys A. Clinicoradiologic features of ameloblastomas: A single-centre study of 155 cases. J Oral Pathol Med 2024; 53:133-141. [PMID: 38212674 DOI: 10.1111/jop.13510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 12/22/2023] [Accepted: 12/28/2023] [Indexed: 01/13/2024]
Abstract
BACKGROUND The purpose of the current study was to report on the clinical presentation and radiologic features of 155 cases of ameloblastoma (AB), representing a detailed, large, single-centre radiologic study. METHODS Histologically confirmed cases were reviewed over 11 years. Demographic and clinical data were retrieved from the patient's records. Radiologic information was analysed from available radiographs. The radiologic features of ABs were assessed according to the mean age of presentation and the mean duration of the lesion. The distinguishing radiologic features between adults/children and sex were also evaluated. RESULTS A statistically significant correlation existed between loss of border demarcation and advanced mean age. Multilocular lesions were markedly more common in adults compared to children. Multilocular ABs were associated with increased lesion duration and advanced mean age. Radiologic signs of reactive bony changes associated with the tumour presented at the highest mean duration of all bony effects. Bony expansion and cortical destruction were statistically correlated with lesion duration. Tooth impaction was more common in children. Some mandibular lesions reached a significant size, resulting in impingement of the maxillary sinus, zygoma, orbit and pterygoid plates. CONCLUSION Due to unfortunate healthcare access constraints, ABs grow to significant sizes and exhibit features not often reported in the literature. The findings of this analysis highlighted the radiologic features of ABs expressed through the mean age and duration of the lesion. This emphasises the significance of timely management of these lesions.
Collapse
Affiliation(s)
- Chané Smit
- Department of Oral and Maxillofacial Pathology, School of Dentistry, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
| | - Liam Robinson
- Department of Oral and Maxillofacial Pathology, School of Dentistry, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
| | | | - Felipe Paiva Fonseca
- Department of Oral and Maxillofacial Pathology, School of Dentistry, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
- Department of Oral Surgery and Pathology, School of Dentistry, Federal University of Minas Gerais (UFMG), Belo Horizonte, Brazil
| | - Willie F P van Heerden
- Department of Oral and Maxillofacial Pathology, School of Dentistry, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
| | - André Uys
- Department of Anatomy, School of Medicine, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
| |
Collapse
|
26
|
Patel P, Effiom OA, Akinshipo AWO, Akintoye SO. Differential Profile of Primary and Recurrent Ameloblastomas Among Afro-descendants and Non-Afro-descendants-a Systematic Review. J Racial Ethn Health Disparities 2024; 11:92-100. [PMID: 36596981 PMCID: PMC10437082 DOI: 10.1007/s40615-022-01500-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 12/15/2022] [Accepted: 12/16/2022] [Indexed: 01/05/2023]
Abstract
Ameloblastoma is an aggressively growing jaw tumor with high recurrent properties. Reports on global and racial distribution of ameloblastoma are variable and inconclusive. The role of race and ethnicity on ameloblastoma growth characteristics, genetic mutational profile, and recurrence is also still unclear. The primary aim of this systematic review was to assess genetic, racial, and ethnic distribution of primary and recurrent ameloblastoma from published literature. The secondary aim was to assess potential correlations between ethnicity, genetic mutation, and disparities in ameloblastoma treatment outcomes in Afro-descendants and non-Afro-descendants. Twenty-three eligible articles were selected based on preferred reporting items for systematic review and meta-analysis (PRISMA), and a total of 169 ameloblastoma cases were evaluated. Data on patient demographics, ameloblastoma growth characteristics, and genetic status were collected for quantitative analysis. Among a total of 169 ameloblastoma cases, Afro-descendant patients had higher primary and recurrent ameloblastomas at 15.5% and 4.7% respectively compared to non-Afro-descendant at 10.7% and 1.8% respectively. Additionally, BRAF V600E was positively associated with 48.8% of all ameloblastomas and strong predilection for Afro-descendants. Despite the paucity of information on genetic profile of ameloblastomas in the Afro-descendant patient cohort, this ethnic group still accounted for 2.95% of all BRAF V600E-positive tumors. These suggest that Afro-descendants are understudied regarding ameloblastoma characteristics, genetic profile, and recurrence profile. Mutational analysis of ameloblastoma tumors in Afro-descendants should be promoted.
Collapse
Affiliation(s)
- Parth Patel
- Dornsife School of Public Health, Drexel University, Philadelphia, PA, USA
| | - Olajumoke A Effiom
- Department of Oral and Maxillofacial Pathology/Biology Faculty of Dental Sciences, University of Lagos, Lagos, Nigeria
| | - Abdul-Warith O Akinshipo
- Department of Oral and Maxillofacial Pathology/Biology Faculty of Dental Sciences, University of Lagos, Lagos, Nigeria
| | - Sunday O Akintoye
- Department of Oral and Maxillofacial Pathology/Biology Faculty of Dental Sciences, University of Lagos, Lagos, Nigeria.
- Department of Oral Medicine, School of Dental Medicine, University of Pennsylvania, 240 S 40th Street, Philadelphia, PA, USA.
| |
Collapse
|
27
|
Xu L, Qiu K, Li K, Ying G, Huang X, Zhu X. Automatic segmentation of ameloblastoma on ct images using deep learning with limited data. BMC Oral Health 2024; 24:55. [PMID: 38195496 PMCID: PMC10775495 DOI: 10.1186/s12903-023-03587-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 10/27/2023] [Indexed: 01/11/2024] Open
Abstract
BACKGROUND Ameloblastoma, a common benign tumor found in the jaw bone, necessitates accurate localization and segmentation for effective diagnosis and treatment. However, the traditional manual segmentation method is plagued with inefficiencies and drawbacks. Hence, the implementation of an AI-based automatic segmentation approach is crucial to enhance clinical diagnosis and treatment procedures. METHODS We collected CT images from 79 patients diagnosed with ameloblastoma and employed a deep learning neural network model for training and testing purposes. Specifically, we utilized the Mask R-CNN neural network structure and implemented image preprocessing and enhancement techniques. During the testing phase, cross-validation methods were employed for evaluation, and the experimental results were verified using an external validation set. Finally, we obtained an additional dataset comprising 200 CT images of ameloblastoma from a different dental center to evaluate the model's generalization performance. RESULTS During extensive testing and evaluation, our model successfully demonstrated the capability to automatically segment ameloblastoma. The DICE index achieved an impressive value of 0.874. Moreover, when the IoU threshold ranged from 0.5 to 0.95, the model's AP was 0.741. For a specific IoU threshold of 0.5, the model achieved an AP of 0.914, and for another IoU threshold of 0.75, the AP was 0.826. Our validation using external data confirms the model's strong generalization performance. CONCLUSION In this study, we successfully applied a neural network model based on deep learning that effectively performs automatic segmentation of ameloblastoma. The proposed method offers notable advantages in terms of efficiency, accuracy, and speed, rendering it a promising tool for clinical diagnosis and treatment.
Collapse
Affiliation(s)
- Liang Xu
- The First Affiliated Hospital of Fujian Medical University, Fuzhou, China
- Department of Stomatology, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou, China
| | - Kaixi Qiu
- Fuzhou First General Hospital, , Fuzhou, China
| | - Kaiwang Li
- School of Aeronautics and Astronautics, Tsinghua University, Beijing, China
| | - Ge Ying
- Jianning County General Hospital, , Fuzhou, China
| | - Xiaohong Huang
- The First Affiliated Hospital of Fujian Medical University, Fuzhou, China.
| | - Xiaofeng Zhu
- The First Affiliated Hospital of Fujian Medical University, Fuzhou, China.
- Department of Stomatology, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou, China.
| |
Collapse
|
28
|
Anbinselvam A, Akinshipo AWO, Adisa AO, Effiom OA, Zhu X, Adebiyi KE, Arotiba GT, Akintoye SO. Comparison of diagnostic methods for detection of BRAFV600E mutation in ameloblastoma. J Oral Pathol Med 2024; 53:79-87. [PMID: 38185471 PMCID: PMC10872315 DOI: 10.1111/jop.13506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 12/06/2023] [Accepted: 12/14/2023] [Indexed: 01/09/2024]
Abstract
BACKGROUND Ameloblastoma is an aggressively growing, highly recurrent odontogenic jaw tumor. Its association with BRAFV600E mutation is an indication for BRAFV00E-inhibitor therapy The study objective was to identify a sensitive low-cost test for BRAFV600E-positive ameloblastoma. We hypothesized that immunohistochemical staining of formalin-fixed paraffin-embedded tissues for BRAFV600E mutation is a low-cost surrogate for BRAFV600E gene sequencing when laboratory resources are inadequate for molecular testing. METHODS Tissues from 40 ameloblastoma samples were retrieved from either formalin-fixed paraffin-embedded blocks, RNAlater™ stabilization solution or samples inadvertently pre-fixed in formalin before transfer to RNAlater™. BRAFV600E mutation was assessed by Direct Sanger sequencing, Amplification Refractory Mutation System-PCR and immunohistochemistry (IHC). RESULTS BRAFV600E mutation was detected by IHC, Amplification Refractory Mutation System-PCR and Direct Sanger sequencing in 93.33%, 52.5% and 30% of samples respectively. Considering Direct Sanger sequencing as standard BRAFV600E detection method, there was significant difference between the three detection methods (𝜒2 (2) = 31.34, p < 0.0001). Sensitivity and specificity of IHC were 0.8 (95% CI: 0.64-0.90) and 0.9 (95% CI: 0.75-0.99) respectively, while positive predictive value and negative predictive value (NPV) were 0.9 and 0.8 (Fischer's test, p < 0.0001) respectively. Sensitivity and specificity of Amplification Refractory Mutation System-PCR detection method were 0.7 (95% CI: 0.53-0.80) and 0.9 (95% CI = 0.67-0.98) respectively, while PPV and NPV were 0.9 and 0.6 respectively (Fischer's test, p < 0.0001). CONCLUSION Low-cost and less vulnerability of IHC to tissue quality make it a viable surrogate test for BRAFV600E detection in ameloblastoma. Sequential dual IHC and molecular testing for BRAFV600E will reduce equivocal results that could exclude some patients from BRAFV600E-inhibitor therapies.
Collapse
Affiliation(s)
- Arularasan Anbinselvam
- Department of Oral Medicine, School of Dental Medicine, University of Pennsylvania, Philadelphia PA
| | - Abdul-Warith O. Akinshipo
- Department of Oral and Maxillofacial Pathology/Biology, Faculty of Dental Sciences, University of Lagos, Lagos, Nigeria
| | - Akinyele O. Adisa
- University of Ibadan and University College Hospital Ibadan, Ibadan, Nigeria
| | - Olajumoke A. Effiom
- Department of Oral and Maxillofacial Pathology/Biology, Faculty of Dental Sciences, University of Lagos, Lagos, Nigeria
| | - Xinhe Zhu
- Department of Oral Medicine, School of Dental Medicine, University of Pennsylvania, Philadelphia PA
| | - Kehinde E. Adebiyi
- Department of Oral Pathology & Oral Medicine, Faculty of Dentistry. Lagos State University College of Medicine Lagos
| | - Godwin T. Arotiba
- Department of Oral and Maxillofacial Surgery, Faculty of Dental Sciences, University of Lagos, Lagos, Nigeria
| | - Sunday O. Akintoye
- Department of Oral Medicine, School of Dental Medicine, University of Pennsylvania, Philadelphia PA
| |
Collapse
|
29
|
Urechescu H, Banu A, Baderca F, Closca RM, Ilas-Tat MB, Urtila F, Pricop M. Ameloblastoma of the Mandible in a 16-Year-Old Female-Case Report. MEDICINA (KAUNAS, LITHUANIA) 2023; 60:66. [PMID: 38256328 PMCID: PMC10819258 DOI: 10.3390/medicina60010066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 12/25/2023] [Accepted: 12/27/2023] [Indexed: 01/24/2024]
Abstract
Ameloblastoma is a benign epithelial tumor that has aggressive, destructive and unlimited growth potential, having the capacity for recurrence and malignant transformation. Regarding the symptoms and clinical signs, the presentation of ameloblastoma is poor. In children and young people, ameloblastoma can be difficult to diagnose, because it mimics other benign lesions. Its diagnosis requires a combination of imaging data, histopathological analysis and molecular tests. The methods of treatment consist of radical surgery (segmental resection) and conservative treatments (enucleation with bone curettage). The particularity of the presented case is represented by the late request for medical consultation, a direct consequence of the measures implemented to prevent and control the spread of COVID-19.
Collapse
Affiliation(s)
- Horatiu Urechescu
- Department of Oral and Maxillo-Facial Surgery, Faculty of Dental Medicine, “Victor Babes” University of Medicine and Pharmacy Timisoara, Eftimie Murgu Square No. 2, 300041 Timisoara, Romania; (H.U.); (F.U.); (M.P.)
| | - Ancuta Banu
- Department of Oral and Maxillo-Facial Surgery, Faculty of Dental Medicine, “Victor Babes” University of Medicine and Pharmacy Timisoara, Eftimie Murgu Square No. 2, 300041 Timisoara, Romania; (H.U.); (F.U.); (M.P.)
| | - Flavia Baderca
- Department of Microscopic Morphology, “Victor Babes” University of Medicine and Pharmacy Timisoara, Eftimie Murgu Square No. 2, 300041 Timisoara, Romania; (F.B.); (R.M.C.)
- Angiogenesis Research Center, “Victor Babes” University of Medicine and Pharmacy Timisoara, Eftimie Murgu Square No. 2, 300041 Timisoara, Romania
- Service of Pathology, Emergency City Hospital, 300254 Timisoara, Romania;
| | - Raluca Maria Closca
- Department of Microscopic Morphology, “Victor Babes” University of Medicine and Pharmacy Timisoara, Eftimie Murgu Square No. 2, 300041 Timisoara, Romania; (F.B.); (R.M.C.)
- Service of Pathology, Emergency City Hospital, 300254 Timisoara, Romania;
| | | | - Florin Urtila
- Department of Oral and Maxillo-Facial Surgery, Faculty of Dental Medicine, “Victor Babes” University of Medicine and Pharmacy Timisoara, Eftimie Murgu Square No. 2, 300041 Timisoara, Romania; (H.U.); (F.U.); (M.P.)
| | - Marius Pricop
- Department of Oral and Maxillo-Facial Surgery, Faculty of Dental Medicine, “Victor Babes” University of Medicine and Pharmacy Timisoara, Eftimie Murgu Square No. 2, 300041 Timisoara, Romania; (H.U.); (F.U.); (M.P.)
| |
Collapse
|
30
|
Alarcón-Sánchez MA, Becerra-Ruíz JS, Yessayan L, Mosaddad SA, Heboyan A. Implant-supported prosthetic rehabilitation after Ameloblastomas treatment: a systematic review. BMC Oral Health 2023; 23:1013. [PMID: 38110933 PMCID: PMC10729555 DOI: 10.1186/s12903-023-03765-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Accepted: 12/12/2023] [Indexed: 12/20/2023] Open
Abstract
BACKGROUND Ameloblastoma (AM), the benign counterpart of ameloblastic carcinoma, is a benign odontogenic tumor of epithelial origin, naturally aggressive, with unlimited growth potential and a high tendency to relapse if not adequately removed. Patients with AM treated surgically can benefit from dental implant therapy, promoting oral rehabilitation and improving their quality of life. The present study aimed to determine the survival rate of dental implants placed after surgical treatment of patients affected by AM. In addition, there were two secondary objectives: 1) To evaluate which dental implant loading protocols are most frequently used and 2) To determine the type of prosthetic restoration most commonly used in these patients. METHODS The Preferred Reporting Items for Systematic Review and Meta-Analysis (PRISMA) guidelines were followed during the study. Searches were performed in three databases (PubMed/MEDLINE, Scopus, and Google Scholar) until November 2023. Additionally, the electronic search was enriched by an iterative hand search of journals related to oral pathology and medicine, maxillofacial surgery, and oral prosthodontics and implantology. Only reports and case series in English from January 2003 to date were included. The Joanna Briggs Institute tool (JBI-Case Reports/Case Series) was used for the study quality assessment. RESULTS The total number of patients and implants studied were 64 and 271, respectively, all with surgically treated AM. The patient's ages ranged from 8 to 79 years, with a mean (SD) age of 37.3 ± 16.4. Fifty-three percent were male and 47% were female. The range of follow-up duration was 1 to 22 years. An implant survival/success rate of 98.1% was reported. In addition, most of them were conventionally loaded (38.3%). Hybrid implant-supported fixed dentures were the most commonly used by prosthodontists (53%). CONCLUSIONS Oral rehabilitation with dental implants inserted in free flaps for orofacial reconstruction in surgically treated patients with AM can be considered a safe and successful treatment modality.
Collapse
Affiliation(s)
- Mario Alberto Alarcón-Sánchez
- Biomedical Science, Faculty of Chemical-Biological Sciences, Autonomous University of Guerrero, Chilpancingo de los Bravo, Guerrero, Mexico
| | - Julieta Sarai Becerra-Ruíz
- Institute of Research of Bioscience, University Center of Los Altos, University of Guadalajara, Tepatitlán de Morelos, Jalisco, Mexico
| | - Lazar Yessayan
- Department of Therapeutic Stomatology, Faculty of Stomatology, Yerevan State Medical University after Mkhitar Heratsi, Yerevan, Armenia
| | - Seyed Ali Mosaddad
- Student Research Committee, School of Dentistry, Shiraz University of Medical Sciences, Qasr-e-Dasht Street, Shiraz, Iran.
| | - Artak Heboyan
- Department of Prosthodontics, Faculty of Stomatology, Yerevan State Medical University after Mkhitar Heratsi, Str. Koryun 2, 0025, Yerevan, Armenia.
| |
Collapse
|
31
|
Alamri M, Violante T, Schellati N, Hinchy NV, Aguirre A. Maxillary radiolucency in a 39-year-old man. J Am Dent Assoc 2023; 154:1112-1118. [PMID: 36526453 DOI: 10.1016/j.adaj.2022.10.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 09/27/2022] [Accepted: 10/05/2022] [Indexed: 12/15/2022]
|
32
|
Zhang Y, Xing A, He J, Wang F, Li Z, Sun B. Curettage combined with bone cavity opening reduces recurrence of the mandibular conventional ameloblastoma and effectively preserves the mandible: a retrospective study. BMC Oral Health 2023; 23:885. [PMID: 37986074 PMCID: PMC10658885 DOI: 10.1186/s12903-023-03660-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Accepted: 11/12/2023] [Indexed: 11/22/2023] Open
Abstract
BACKGROUND Patients with mandibular conventional ameloblastoma undergoing radical surgical treatment experience greater trauma and often find it challenging to accept, whereas conservative therapy is associated with a higher recurrence rate. In this study, we have improved traditional conservative treatment for mandibular conventional ameloblastoma by curettage combined with bone cavity opening (Cur/BCO). This retrospective study aimed to evaluate the effectiveness of the Cur/BCO treatment by comparing its recurrence rate and bone mineral density (BMD) growth rate with the traditional conservative treatment approach. METHODS A total of 40 patients, meeting the study's inclusion and exclusion criteria from 2012 to 2020, were screened, with 20 in the modified group and 20 in the traditional group. ImageJ (RRID: SCR_003070) software was employed for measuring image indices. All data were analyzed using T-test, Chi-square test and Fisher exact test in SPSS 26.0 (p = 0.05). RESULTS The incidence of recurrence was significantly lower in the modified group, at only 5%, compared to 35% in the traditional group (p < 0.05). Regarding bone mineral density (BMD) growth rate, the average value in the modified group was 0.0862 ± 0.2302 (/month), significantly higher than the average value of 0.0608 ± 0.2474 (/month) in the traditional group (p < 0.05). CONCLUSIONS In this study, it was found that the recurrence rate of the modified conservative treatment (Cur/BCO) was lower than that of the traditional conservative treatment for managing mandibular conventional ameloblastoma. Furthermore, the BMD growth rate was quicker in the modified group. Thus, Cur/BCO could be considered as a viable option for the conservative treatment of mandibular conventional ameloblastoma.
Collapse
Affiliation(s)
- Yuan Zhang
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Jilin University, Qinghua Road 1500, Changchun, Jilin Province, 130021, P. R. China
| | - Aili Xing
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Jilin University, Qinghua Road 1500, Changchun, Jilin Province, 130021, P. R. China
| | - Jingya He
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Jilin University, Qinghua Road 1500, Changchun, Jilin Province, 130021, P. R. China
| | - Feng Wang
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Jilin University, Qinghua Road 1500, Changchun, Jilin Province, 130021, P. R. China
| | - Zhongrui Li
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Jilin University, Qinghua Road 1500, Changchun, Jilin Province, 130021, P. R. China
| | - Bin Sun
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Jilin University, Qinghua Road 1500, Changchun, Jilin Province, 130021, P. R. China.
| |
Collapse
|
33
|
Shen W, Xu C, Wang P, Chen J, Yu D, Zhu H. Giant Mandibular Ameloblastoma with Rare Hypercalcemia: A Case Report and Literature Review. MEDICINA (KAUNAS, LITHUANIA) 2023; 59:1956. [PMID: 38004005 PMCID: PMC10673442 DOI: 10.3390/medicina59111956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 10/18/2023] [Accepted: 11/01/2023] [Indexed: 11/26/2023]
Abstract
Ameloblastoma is the most common benign odontogenic tumor with local invasion and high recurrence, which generally occurs in the jaw bones. Hypercalcemia is a common paraneoplastic syndrome that is commonly observed in patients with malignancies but rarely encountered in patients with benign tumors. Thus far, not many cases of ameloblastoma with hypercalcemia have been reported, and the pathogenic mechanism has not been studied in depth. This paper presents a case report of a 26-year-old male diagnosed with giant ameloblastoma of the mandible, accompanied by rare hypercalcemia. Additionally, a review of the relevant literature is conducted. This patient initially underwent marsupialization, yet this treatment was not effective, which indicated that the selection of the appropriate operation is of prime importance for improving the prognosis of patients with ameloblastoma. The tumor not only failed to shrink but gradually increased in size, accompanied by multiple complications including hypercalcemia, renal dysfunction, anemia, and cachexia. Due to the contradiction between the necessity of tumor resection and the patient's poor systemic condition, we implemented a multi-disciplinary team (MDT) meeting to better evaluate this patient's condition and design an individualized treatment strategy. The patient subsequently received a variety of interventions to improve the general conditions until he could tolerate surgery, and finally underwent the successful resection of giant ameloblastoma and reconstruction with vascularized fibular flap. No tumor recurrence or distance metastasis was observed during 5 years of follow-up. Additionally, the absence of hypercalcemia recurrence was also noted.
Collapse
Affiliation(s)
- Wenyi Shen
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China; (W.S.); (C.X.); (P.W.); (J.C.)
- Department of Stomatology, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Chenlu Xu
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China; (W.S.); (C.X.); (P.W.); (J.C.)
- Department of Stomatology, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Pan Wang
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China; (W.S.); (C.X.); (P.W.); (J.C.)
- Department of Stomatology, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Junpeng Chen
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China; (W.S.); (C.X.); (P.W.); (J.C.)
- Department of Stomatology, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Dan Yu
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China; (W.S.); (C.X.); (P.W.); (J.C.)
- Department of Stomatology, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Huiyong Zhu
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China; (W.S.); (C.X.); (P.W.); (J.C.)
- Department of Stomatology, Zhejiang University School of Medicine, Hangzhou 310058, China
| |
Collapse
|
34
|
Giraldo-Roldan D, Ribeiro ECC, Araújo ALD, Penafort PVM, Silva VMD, Câmara J, Pontes HAR, Martins MD, Oliveira MC, Santos-Silva AR, Lopes MA, Kowalski LP, Moraes MC, Vargas PA. Deep learning applied to the histopathological diagnosis of ameloblastomas and ameloblastic carcinomas. J Oral Pathol Med 2023; 52:988-995. [PMID: 37712132 DOI: 10.1111/jop.13481] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Revised: 08/08/2023] [Accepted: 08/30/2023] [Indexed: 09/16/2023]
Abstract
BACKGROUND Odontogenic tumors (OT) are composed of heterogeneous lesions, which can be benign or malignant, with different behavior and histology. Within this classification, ameloblastoma and ameloblastic carcinoma (AC) represent a diagnostic challenge in daily histopathological practice due to their similar characteristics and the limitations that incisional biopsies represent. From these premises, we wanted to test the usefulness of models based on artificial intelligence (AI) in the field of oral and maxillofacial pathology for differential diagnosis. The main advantages of integrating Machine Learning (ML) with microscopic and radiographic imaging is the ability to significantly reduce intra-and inter observer variability and improve diagnostic objectivity and reproducibility. METHODS Thirty Digitized slides were collected from different diagnostic centers of oral pathology in Brazil. After performing manual annotation in the region of interest, the images were segmented and fragmented into small patches. In the supervised learning methodology for image classification, three models (ResNet50, DenseNet, and VGG16) were focus of investigation to provide the probability of an image being classified as class0 (i.e., ameloblastoma) or class1 (i.e., Ameloblastic carcinoma). RESULTS The training and validation metrics did not show convergence, characterizing overfitting. However, the test results were satisfactory, with an average for ResNet50 of 0.75, 0.71, 0.84, 0.65, and 0.77 for accuracy, precision, sensitivity, specificity, and F1-score, respectively. CONCLUSIONS The models demonstrated a strong potential of learning, but lack of generalization ability. The models learn fast, reaching a training accuracy of 98%. The evaluation process showed instability in validation; however, acceptable performance in the testing process, which may be due to the small data set. This first investigation opens an opportunity for expanding collaboration to incorporate more complementary data; as well as, developing and evaluating new alternative models.
Collapse
Affiliation(s)
- Daniela Giraldo-Roldan
- Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas, Piracicaba, Brazil
| | | | | | | | - Viviane Mariano da Silva
- Institute of Science and Technology, Federal University of São Paulo (ICT-Unifesp), São José dos Campos, Brazil
| | - Jeconias Câmara
- Department of Pathology and Legal Medicine, School of Medicine, Federal University of Amazon, Manaus, Brazil
| | | | - Manoela Domingues Martins
- Department of Oral Pathology, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Márcio Campos Oliveira
- Department of Health, State University of Feira de Santana (UEFS), Feira de Santana, Brazil
| | - Alan Roger Santos-Silva
- Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas, Piracicaba, Brazil
| | - Marcio Ajudarte Lopes
- Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas, Piracicaba, Brazil
| | - Luiz Paulo Kowalski
- Head and Neck Surgery Department, University of São Paulo Medical School, São Paulo, Brazil
| | - Matheus Cardoso Moraes
- Institute of Science and Technology, Federal University of São Paulo (ICT-Unifesp), São José dos Campos, Brazil
| | - Pablo Agustin Vargas
- Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas, Piracicaba, Brazil
| |
Collapse
|
35
|
Peng MJ, Lin Z, Tan Z, Hu Y, Chen P, To MKT. Virtual operation for hip joint replacement implemented by Sensable_FreeForm_Modelling: A surgical drill. Int J Med Robot 2023; 19:e2552. [PMID: 37489032 DOI: 10.1002/rcs.2552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 07/06/2023] [Accepted: 07/07/2023] [Indexed: 07/26/2023]
Abstract
OBJECTIVE To design a virtual operation of joint replacement for surgical drills using a haptic device, SenSable_FreeForm_Modelling (SFM), to enhance surgeons' efficiency and enable "Virtual tutorial without reality" for interns. METHOD A patient with hip joint osteoarthritis is randomly selected to perform Total Hip Replacement (THR). The hip images were input into Mimics in the format of *.dicom after CT scan and then exported to SFM using the stereolithographic (*.stl) format. A surgical toolkit can be created virtually with Computer Aided Design software such as Pro-E or Ghost SDK and a visual drill scenario of THR directed by a force-respondent stick, namely Phantom. RESULT 3D models of the hip joint were rebuilt illustrating clearly that the geometrical shapes of the surgical equipment created are similar to real instruments, and the THR operation is emulated distinctly in novelty. CONCLUSION In obedience to an ancient maxim, so called 'genuine knowledge originated from practice', this simulative operation offers hands-on experience for students in the orthopaedics field with remarkable effects, contributing not only teaching cases for medical courses but also a planning basis for physical surgery.
Collapse
Affiliation(s)
- Matthew JianQiao Peng
- Department of Spinal Surgery, Affiliated JiangMen Hospital of TCM @ Ji'Nan University, JiangMen, China
| | - Ze Lin
- Department of Orthopedics, PuNing People's Hospital, GuangDong, China
| | - ZhiJia Tan
- Department of Orthopedics & Traumatology, University of HongKong - Shenzhen Hospital, Shenzhen, GuangDong, China
| | - Yong Hu
- Department of Orthopedics & Traumatology, University of HongKong - Shenzhen Hospital, Shenzhen, GuangDong, China
| | - Peikai Chen
- Department of Orthopedics & Traumatology, University of HongKong - Shenzhen Hospital, Shenzhen, GuangDong, China
| | - Michael Kai-Tsun To
- Department of Orthopedics & Traumatology, University of HongKong - Shenzhen Hospital, Shenzhen, GuangDong, China
| |
Collapse
|
36
|
Graillon N, Akintoye SO, Iocca O, Kaleem A, Hajjar S, Imanguli M, Shanti RM. Current concepts in targeted therapies for benign tumors of the jaw - A review of the literature. J Craniomaxillofac Surg 2023; 51:591-596. [PMID: 37852890 DOI: 10.1016/j.jcms.2023.10.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 10/05/2023] [Indexed: 10/20/2023] Open
Abstract
The aim of our study was to review current concepts in targeted therapies for benign tumors of the jaw. Benign odontogenic and maxillofacial bone tumors often require radical surgery, with consequent morbidity that impacts patients' postsurgical quality of life. Currently, targeted therapies and novel nonsurgical therapeutics are being explored for management of non-resectable tumors, with the aim of avoiding surgery or minimizing surgical scope. However, data on clinical applications of targeted therapies for benign tumors of the jaw remain sparse. Therefore, a literature review was conducted, based on the PubMed database, which included in vivo human clinical studies describing clinical application of targeted therapy for benign tumor of the jaw. The review assessed the outcomes of BRAF and MEK inhibitors for treatment of ameloblastoma, RANKL monoclonal antibody for treatment of giant cell tumor, cherubism, aneurysmal bone cyst, and fibrous dysplasia, and tyrosine kinase inhibitor for treatment of odontogenic myxoma and cherubism. Targeted therapies decreased tumor size, slowed down tumor progression, and reduced bone pain. Surgery remains the gold standard, but targeted therapies are promising adjuvant or alternative treatment options for reducing tumor progression and morbidity of tumor surgery.
Collapse
Affiliation(s)
- Nicolas Graillon
- Aix Marseille Univ, APHM, Univ Gustave Eiffel, LBA, Bd Pierre Dramard, 13916, Marseille, France; Conception University Hospital, Department of Oral and Maxillofacial Surgery, 147 Bd Baille, Marseille, 13005, France.
| | - Sunday O Akintoye
- Department of Oral Medicine, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Oreste Iocca
- Division of Maxillofacial Surgery, Città Della Salute e Della Scienza Hospital, University of Torino, Torino, Italy
| | - Arshad Kaleem
- Head and Neck Oncology and Microvascular Surgery, High Desert Oral and Facial Surgery, El Paso, TX, USA
| | - Souren Hajjar
- Department of Oral and Maxillofacial Surgery, Rutgers School of Dental Medicine, Newark, NJ, USA
| | - Matin Imanguli
- Department of Otolaryngology - Head and Neck Surgery, Robert Wood Johnson Medical School, Associate Member Rutgers Cancer Institute of New Jersey, Newark, NJ, USA
| | - Rabie M Shanti
- Department of Oral and Maxillofacial Surgery, Rutgers School of Dental Medicine, Newark, NJ, USA
| |
Collapse
|
37
|
Martins-de-Barros AV, Silva CCG, Gonçalves KKN, de Albuquerque Cavalcanti Almeida R, de Oliveira E Silva ED, da Costa Araújo FA, Robinson L, van Heerden WFP, de Vasconcelos Carvalho M. Does BRAF V600E mutation affect recurrence rate of ameloblastomas? Systematic review and meta-analysis. J Oral Pathol Med 2023; 52:701-709. [PMID: 37364158 DOI: 10.1111/jop.13458] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Revised: 03/26/2023] [Accepted: 05/26/2023] [Indexed: 06/28/2023]
Abstract
OBJECTIVE The objective of this systematic review with meta-analysis was to critically evaluate the available data on the association of the BRAF V600E mutation and recurrence rate of ameloblastomas. MATERIALS AND METHODS This systematic review was registered in Prospero (CRD42020183645) and performed based on the PRISMA statement. A comprehensive search in PubMed, Web of Science, Scopus and Cochrane Library databases was performed in order to answer the question "Does BRAF V600E mutation affect recurrence rate of ameloblastomas?" Methodological quality and risk of bias of the selected studies were assessed with JBI Critical Appraise Tool. Meta-analysis of quantitative data was conducted with RevMan 5.3 and Jamovi 2.3. RESULTS The initial search identified 302 articles, and 21 met the inclusion criteria. A total of 855 subjects with ameloblastoma were included in the analysis. The pooled measures for frequency of BRAF V600E mutation was 65.30% (95% CI: 0.56-0.75; p < .001; I2 = 90.85%; τ = 0.205; p < .001), and the pooled recurrence rate was 25.30% (95% CI: 0.19-0.31; p < .001; I2 = 79.44%; τ = 0.118; p < .001). No differences in recurrence rate were observed between the BRAF V600E and wild type BRAF ameloblastomas, with a pooled Odds Ratio of 0.93 (95% CI: 0.56-1.54; p = .78; I2 = 31%; p = .09). CONCLUSIONS BRAF V600E mutation is a frequent event in ameloblastomas, but does not increase nor reduce its recurrence rate, and thus have a limited value in predicting its prognosis.
Collapse
Affiliation(s)
- Allan Vinícius Martins-de-Barros
- School of Dentistry, Post-Graduation Program in Dentistry, University of Pernambuco (UPE), Recife, Pernambuco, Brazil
- Centro Integrado de Anatomia Patológica (CIAP), Hospital Universitário Oswaldo Cruz (HUOC/UPE), Recife, Pernambuco, Brazil
| | - Caio César Gonçalves Silva
- School of Dentistry, Post-Graduation Program in Dentistry, University of Pernambuco (UPE), Recife, Pernambuco, Brazil
- Department of Oral and Maxillofacial Surgery, Hospital Universitário Oswaldo Cruz (HUOC/UPE), Recife, Pernambuco, Brazil
| | - Kalyne Kelly Negromonte Gonçalves
- School of Dentistry, Post-Graduation Program in Dentistry, University of Pernambuco (UPE), Recife, Pernambuco, Brazil
- Department of Oral and Maxillofacial Surgery, Hospital Universitário Oswaldo Cruz (HUOC/UPE), Recife, Pernambuco, Brazil
| | - Renata de Albuquerque Cavalcanti Almeida
- School of Dentistry, Post-Graduation Program in Dentistry, University of Pernambuco (UPE), Recife, Pernambuco, Brazil
- Department of Oral and Maxillofacial Surgery, Hospital Universitário Oswaldo Cruz (HUOC/UPE), Recife, Pernambuco, Brazil
| | - Emanuel Dias de Oliveira E Silva
- School of Dentistry, Post-Graduation Program in Dentistry, University of Pernambuco (UPE), Recife, Pernambuco, Brazil
- Department of Oral and Maxillofacial Surgery, Hospital Universitário Oswaldo Cruz (HUOC/UPE), Recife, Pernambuco, Brazil
| | - Fábio Andrey da Costa Araújo
- School of Dentistry, Post-Graduation Program in Dentistry, University of Pernambuco (UPE), Recife, Pernambuco, Brazil
- Department of Oral and Maxillofacial Surgery, Hospital Universitário Oswaldo Cruz (HUOC/UPE), Recife, Pernambuco, Brazil
| | - Liam Robinson
- Department of Oral and Maxillofacial Pathology, School of Dentistry, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
| | - Willie F P van Heerden
- Department of Oral and Maxillofacial Pathology, School of Dentistry, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
| | - Marianne de Vasconcelos Carvalho
- School of Dentistry, Post-Graduation Program in Dentistry, University of Pernambuco (UPE), Recife, Pernambuco, Brazil
- Centro Integrado de Anatomia Patológica (CIAP), Hospital Universitário Oswaldo Cruz (HUOC/UPE), Recife, Pernambuco, Brazil
| |
Collapse
|
38
|
Li W, Li Y, Liu X, Wang L, Chen W, Qian X, Zheng X, Chen J, Liu Y, Lin L. Machine learning-based radiomics for predicting BRAF-V600E mutations in ameloblastoma. Front Immunol 2023; 14:1180908. [PMID: 37646022 PMCID: PMC10461083 DOI: 10.3389/fimmu.2023.1180908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 07/31/2023] [Indexed: 09/01/2023] Open
Abstract
Background Ameloblastoma is a locally invasive and aggressive epithelial odontogenic neoplasm. The BRAF-V600E gene mutation is a prevalent genetic alteration found in this tumor and is considered to have a crucial role in its pathogenesis. The objective of this study is to develop and validate a radiomics-based machine learning method for the identification of BRAF-V600E gene mutations in ameloblastoma patients. Methods In this retrospective study, data from 103 patients diagnosed with ameloblastoma who underwent BRAF-V600E mutation testing were collected. Of these patients, 72 were included in the training cohort, while 31 were included in the validation cohort. To address class imbalance, synthetic minority over-sampling technique (SMOTE) is applied in our study. Radiomics features were extracted from preprocessed CT images, and the most relevant features, including both radiomics and clinical data, were selected for analysis. Machine learning methods were utilized to construct models. The performance of these models in distinguishing between patients with and without BRAF-V600E gene mutations was evaluated using the receiver operating characteristic (ROC) curve. Results When the analysis was based on radiomics signature, Random Forest performed better than the others, with the area under the ROC curve (AUC) of 0.87 (95%CI, 0.68-1.00). The performance of XGBoost model is slightly lower than that of Random Forest, and its AUC is 0.83 (95% CI, 0.60-1.00). The nomogram evident that among younger women, the affected region primarily lies within the mandible, and patients with larger tumor diameters exhibit a heightened risk. Additionally, patients with higher radiomics signature scores are more susceptible to the BRAF-V600E gene mutations. Conclusions Our study presents a comprehensive radiomics-based machine learning model using five different methods to accurately detect BRAF-V600E gene mutations in patients diagnosed with ameloblastoma. The Random Forest model's high predictive performance, with AUC of 0.87, demonstrates its potential for facilitating a convenient and cost-effective way of identifying patients with the mutation without the need for invasive tumor sampling for molecular testing. This non-invasive approach has the potential to guide preoperative or postoperative drug treatment for affected individuals, thereby improving outcomes.
Collapse
Affiliation(s)
- Wen Li
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Fujian Medical University, Fuzhou, China
| | - Yang Li
- School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
| | - Xiaoling Liu
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Li Wang
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Wenqian Chen
- School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
| | - Xueshen Qian
- School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
| | - Xianglong Zheng
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Fujian Medical University, Fuzhou, China
| | - Jiang Chen
- School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
| | - Yiming Liu
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Lisong Lin
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Fujian Medical University, Fuzhou, China
| |
Collapse
|
39
|
de Albuquerque Dias R, Balbinot KM, da Silva Kataoka MS, de Melo Alves Júnior S, de Jesus Viana Pinheiro J. Expression of stem cell markers SALL4, LIN28A, and KLF4 in ameloblastoma. Diagn Pathol 2023; 18:92. [PMID: 37559082 PMCID: PMC10413759 DOI: 10.1186/s13000-023-01379-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Accepted: 08/02/2023] [Indexed: 08/11/2023] Open
Abstract
BACKGROUND Ameloblastoma (AME) is a benign odontogenic tumour of epithelial origin characterised by slow but aggressive growth, infiltration, and recurrence; it is capable of reaching large dimensions and invading adjacent structures. Stem cell research has proven to be significant in the sphere of tumour biology through these cells' possible involvement in the aetiopathogenesis of this tumour. METHODS Immunohistochemistry was performed on AME, dentigerous cyst (DC), and dental follicle (DF) samples, and indirect immunofluorescence was performed on the AME-hTERT cell line to determine the expression of SALL4, LIN28A, and KLF4. RESULTS Expression of proteins related to cellular pluripotency was higher in AME cells than in DC and DF cells. The analysis revealed that the proteins in question were mainly expressed in the parenchyma of AME tissue samples and were detected in the nuclei of AME-hTERT cells. CONCLUSIONS Stem cells may be related to the origin and progression of AME.
Collapse
Affiliation(s)
- Rafaela de Albuquerque Dias
- Laboratory of Pathological Anatomy and Immunohistochemistry, Federal University of Pará, Belém, Pará, Brazil.
| | - Karolyny Martins Balbinot
- Laboratory of Pathological Anatomy and Immunohistochemistry, Federal University of Pará, Belém, Pará, Brazil
| | | | - Sérgio de Melo Alves Júnior
- Laboratory of Pathological Anatomy and Immunohistochemistry, Federal University of Pará, Belém, Pará, Brazil
| | | |
Collapse
|
40
|
Schoinohoriti O, Tsami C, Karathanasi V, Kolomvos N. Mixed-Pattern Ameloblastoma of the Anterior Mandible: A Rare Histopathological Presentation at an Infrequent Location. Cureus 2023; 15:e42840. [PMID: 37664263 PMCID: PMC10472321 DOI: 10.7759/cureus.42840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/02/2023] [Indexed: 09/05/2023] Open
Abstract
Ameloblastoma is a benign odontogenic tumor of epithelial origin that exhibits a locally aggressive behavior with a high level of recurrence and multiple factors involved in its molecular pathogenesis. This article is a case report of a 46-year-old male patient suffering from a progressively enlarging tumor of the anterior mandible that caused gradual expansion of the lingual cortical plate and root displacement without resorption of the involved teeth. Incisional biopsy was consistent with "conventional" ameloblastoma, showing a mixed pattern of both the follicular and acanthomatous subtypes. This diagnosis was corroborated through a histopathological examination of the resected specimen. The patient was submitted to en bloc resection (marginal mandibulectomy) with preservation of the lower mandibular border; dental rehabilitation was achieved through a removable prosthesis. He remains disease-free for 5.5 years postoperatively and is highly satisfied with mastication and speech. The objective of this report is to highlight a relatively rare histopathological presentation of the "conventional" ameloblastoma, involving a site not commonly affected by ameloblastomas, the anterior mandible and crossing the midline, in a relatively young male patient.
Collapse
Affiliation(s)
- Ourania Schoinohoriti
- Department of Oral and Maxillofacial Surgery, School of Dentistry, University of Athens, Athens, GRC
| | - Christina Tsami
- Department of Oral and Maxillofacial Surgery, School of Dentistry, University of Athens, Athens, GRC
| | | | - Nikolaos Kolomvos
- Department of Oral and Maxillofacial Surgery, School of Dentistry, University of Athens, Athens, GRC
| |
Collapse
|
41
|
Correa-Arzate L, Portilla-Robertson J, Ramírez-Jarquín JO, Jacinto-Alemán LF, Mejía-Velázquez CP, Villanueva-Sánchez FG, Rodríguez-Vázquez M. LRP5, SLC6A3, and SOX10 Expression in Conventional Ameloblastoma. Genes (Basel) 2023; 14:1524. [PMID: 37628576 PMCID: PMC10453908 DOI: 10.3390/genes14081524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 07/20/2023] [Accepted: 07/21/2023] [Indexed: 08/27/2023] Open
Abstract
Cell proliferation and invasion are characteristic of many tumors, including ameloblastoma, and are important features to target in possible future therapeutic applications. OBJECTIVE The objective of this study was the identification of key genes and inhibitory drugs related to the cell proliferation and invasion of ameloblastoma using bioinformatic analysis. METHODS The H10KA_07_38 gene profile database was analyzed by Rstudio and ShinyGO Gene Ontology enrichment. String, Cytoscape-MCODE, and Kaplan-Meier plots were generated, which were subsequently validated by RT-qPCR relative expression and immunoexpression analyses. To propose specific inhibitory drugs, a bioinformatic search using Drug Gene Budger and DrugBank was performed. RESULTS A total of 204 significantly upregulated genes were identified. Gene ontology enrichment analysis identified four pathways related to cell proliferation and cell invasion. A total of 37 genes were involved in these pathways, and 11 genes showed an MCODE score of ≥0.4; however, only SLC6A3, SOX10, and LRP5 were negatively associated with overall survival (HR = 1.49 (p = 0.0072), HR = 1.55 (p = 0.0018), and HR = 1.38 (p = 0.025), respectively). The RT-qPCR results confirmed the significant differences in expression, with overexpression of >2 for SLC6A3 and SOX10. The immunoexpression analysis indicated positive LRP5 and SLC6A3 expression. The inhibitory drugs bioinformatically obtained for the above three genes were parthenolide and vorinostat. CONCLUSIONS We identify LRP5, SLC6A3, and SOX10 as potentially important genes related to cell proliferation and invasion in the pathogenesis of ameloblastomas, along with both parthenolide and vorinostat as inhibitory drugs that could be further investigated for the development of novel therapeutic approaches against ameloblastoma.
Collapse
Affiliation(s)
- Lorena Correa-Arzate
- Department of Oral Medicine and Pathology, Postgraduate Division, Dental School, National Autonomous University of Mexico, Mexico City 04510, Mexico (J.P.-R.); (C.P.M.-V.)
| | - Javier Portilla-Robertson
- Department of Oral Medicine and Pathology, Postgraduate Division, Dental School, National Autonomous University of Mexico, Mexico City 04510, Mexico (J.P.-R.); (C.P.M.-V.)
| | - Josué Orlando Ramírez-Jarquín
- Neurosciences Division, Cellular Physiology Institute, National Autonomous University of Mexico, Mexico City 04510, Mexico
| | - Luis Fernando Jacinto-Alemán
- Department of Oral Medicine and Pathology, Postgraduate Division, Dental School, National Autonomous University of Mexico, Mexico City 04510, Mexico (J.P.-R.); (C.P.M.-V.)
| | - Claudia Patricia Mejía-Velázquez
- Department of Oral Medicine and Pathology, Postgraduate Division, Dental School, National Autonomous University of Mexico, Mexico City 04510, Mexico (J.P.-R.); (C.P.M.-V.)
| | | | - Mariana Rodríguez-Vázquez
- Infectomic and Molecular Pathogenesis Department, CINVESTAV, National Polytechnic Institute, Mexico City 07738, Mexico;
| |
Collapse
|
42
|
Hendra FN, Helder MN, Ruslin M, Van Cann EM, Forouzanfar T. A network meta-analysis assessing the effectiveness of various radical and conservative surgical approaches regarding recurrence in treating solid/multicystic ameloblastomas. Sci Rep 2023; 13:8445. [PMID: 37231111 DOI: 10.1038/s41598-023-32190-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Accepted: 03/23/2023] [Indexed: 05/27/2023] Open
Abstract
Multiple treatment approaches have been undertaken to reduce the incidence of recurrence in solid/multicystic ameloblastoma (SMA), both conservative and radical. A network meta-analysis (NMA) was conducted to assess and compare the effectiveness of these various treatment approaches concurrently. This study was reported based on the Preferred Reporting Items for Systematic Reviews for Network Meta-Analysis (PRISMA-NMA) statement. PubMed (MEDLINE), ScienceDirect, Scopus, and Web of Science were searched until August 10, 2021. The NMA was conducted using the STATA program. Of 1153 records identified in the search, seven observational studies with 180 patients were included. Six different treatment approaches were identified. Segmental resection ranked highest for reducing the recurrence rate with the highest SUCRA score (77.7), followed by curettage with cryotherapy (66.9) and marginal resection (49.3). Network inconsistencies and publication bias appeared to be absent. According to the Confidence in Network Meta-Analysis (CINeMa) method, the evidence's certainty was low for all comparisons due to imprecision and within-study bias. In conclusion, this study is the first NMA in the field of ameloblastoma. Segmental resection seemed to be the most effective treatment approach for minimizing recurrence in SMA patients. Nevertheless, weak certainty of evidence makes that the results must be regarded with caution.
Collapse
Affiliation(s)
- Faqi Nurdiansyah Hendra
- Department of Oral and Maxillofacial Surgery/ Oral Pathology, Amsterdam UMC and Academic Centre for Dentistry Amsterdam (ACTA), Vrije Universiteit Amsterdam, Cancer Center Amsterdam, Amsterdam, The Netherlands.
- Department of Anatomy, Faculty of Medicine, Hasanuddin University, Makassar, Indonesia.
| | - Marco N Helder
- Department of Oral and Maxillofacial Surgery/ Oral Pathology, Amsterdam UMC and Academic Centre for Dentistry Amsterdam (ACTA), Vrije Universiteit Amsterdam, Cancer Center Amsterdam, Amsterdam, The Netherlands
| | - Muhammad Ruslin
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Hasanuddin University, Makassar, Indonesia
| | - Ellen M Van Cann
- Department of Oral and Maxillofacial Surgery/ Oral Pathology, Amsterdam UMC and Academic Centre for Dentistry Amsterdam (ACTA), Vrije Universiteit Amsterdam, Cancer Center Amsterdam, Amsterdam, The Netherlands
- Department of Head and Neck Surgical Oncology, UMC Utrecht Cancer Center, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Tymour Forouzanfar
- Department of Oral and Maxillofacial Surgery/ Oral Pathology, Amsterdam UMC and Academic Centre for Dentistry Amsterdam (ACTA), Vrije Universiteit Amsterdam, Cancer Center Amsterdam, Amsterdam, The Netherlands
| |
Collapse
|
43
|
Leite-Lima F, Martins-Chaves RR, Fonseca FP, Brennan PA, de Castro WH, Gomez RS. A conservative approach for unicystic ameloblastoma: Retrospective clinic-pathologic analysis of 12 cases. J Oral Pathol Med 2023. [PMID: 37224237 DOI: 10.1111/jop.13453] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 05/11/2023] [Indexed: 05/26/2023]
Abstract
BACKGROUND Unicystic ameloblastoma is an encapsulated odontogenic neoplasm with a single cyst cavity. The conservative or aggressive surgical approaches used to treat the tumor directly affect recurrence rates. However, there is a lack of a standard protocol that can guide its management. STUDY DESIGN We retrospectively reviewed the clinicopathological findings and therapeutical procedures of 12 unicystic ameloblastoma cases treated by the same surgeon during the past 20 years. METHODS All cases of unicystic ameloblastoma diagnosed by biopsy and treated by the same surgeon between 2002 and 2022 were reviewed. Eligibility criteria were patients with completely filled-out charts containing the follow-up period and confirmation of the diagnoses based on the microscopic findings of the whole excised specimens. Data collected were categorized into clinical, radiographic, histological, surgical, and recurrence aspects. RESULTS There was a female predilection (2:1), and ages ranged between 18 and 61 years (mean: 27.25, ±12.45). Almost all (92%) affected the posterior mandible. Radiographically, the mean length of the lesions was 46.14 mm ± 14.28 mm which 92% were unilocular and 8.3% multilocular. Root resorption (n = 7, 58%), tooth displacement (n = 9, 75%), and cortical perforation (n = 5, 42%) were also observed. The mural histological subtype corresponded to 9 (75%) of the cases. The same conservative protocol was performed in all cases. The follow-up period ranged between 12 and 240 months (~62 ± 65) and recurrence occurred in only one patient (8%). CONCLUSION Our findings suggest a conservative approach should be the first option for unicystic ameloblastoma treatment, even for those with mural proliferation.
Collapse
Affiliation(s)
- Flávia Leite-Lima
- Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
| | | | - Felipe Paiva Fonseca
- Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
- Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
| | - Peter A Brennan
- Department of Oral & Maxillofacial Surgery, Queen Alexandra Hospital, Portsmouth, UK
| | - Wagner Henriques de Castro
- Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
- Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
| | - Ricardo Santiago Gomez
- Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
- Medical School, Faculdade Ciências Médicas de Minas Gerais, Belo Horizonte, Brazil
- Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
- Department of Oral & Maxillofacial Surgery, Queen Alexandra Hospital, Portsmouth, UK
| |
Collapse
|
44
|
Li H, Yang L, Hou Y, Zhang Y, Cui Y, Li X. Potential involvement of polycystins in the pathogenesis of ameloblastomas: Analysis based on bioinformatics and immunohistochemistry. Arch Oral Biol 2023; 149:105662. [PMID: 36857877 DOI: 10.1016/j.archoralbio.2023.105662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 02/20/2023] [Accepted: 02/22/2023] [Indexed: 03/02/2023]
Abstract
OBJECTIVE To perform an integrated analysis in identifying novel hub genes that could facilitate the diagnosis and targeted therapy of ameloblastoma. DESIGN The expression profiling dataset, GSE38494, was obtained from the Gene Expression Omnibus database. Differentially expressed genes were identified through GEO2R online tool and characterised via Gene Ontology (GO) analysis and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways. The protein-protein interaction network and hub genes were screened using the STRING database and Cytoscape software. Subsequently, an upregulated gene was selected for further validation using the GSE132472 dataset. Further, immunohistochemistry was performed to assess the expression of the selected gene in ameloblastomas, odontogenic keratocysts, dentigerous cysts, and gingival tissues. The diagnostic and therapeutic utility of the selected hub genes were further verified by receiver operating characteristic analysis and the DGIdb database. RESULTS We identified six hub genes in ameloblastoma, among which the upregulated gene PKD2 and its related gene PKD1 were further validated. GO functional annotation revealed that PKD2 is involved in cell-cell junction, extracellular exosome, cytoplasm, endoplasmic reticulum, and calcium ion transport. The immunohistochemical analysis showed that the expression of polycystin-1 and polycystin-2, encoded by the PKD1 and PKD2 genes, respectively, was upregulated in ameloblastoma. PKD1 and PKD2 had a high diagnostic utility for ameloblastoma, and allopurinol interacted with the PKD2 gene. CONCLUSION Our research indicates that polycystins are highly expressed in ameloblastoma and might be involved in the oncogenesis of ameloblastoma, thus offering a new perspective on the molecular mechanisms and targeted therapies on ameloblastoma.
Collapse
Affiliation(s)
- Haiyang Li
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Hebei Medical University &Hebei Key Laboratory of Stomatology& Hebei Clinical Research Center for Oral Diseases, Shijiazhuang 050017, PR China
| | - Li Yang
- Department of Oral and Maxillofacial Surgery, The Second People's Hospital of Yibin, 644000, PR China
| | - Yali Hou
- Department of Oral Pathology, Hebei Key Laboratory of Stomatology, Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Shijiazhuang 050017, PR China
| | - Yanning Zhang
- Department of Oral Pathology, Hebei Key Laboratory of Stomatology, Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Shijiazhuang 050017, PR China
| | - Yunyi Cui
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Hebei Medical University &Hebei Key Laboratory of Stomatology& Hebei Clinical Research Center for Oral Diseases, Shijiazhuang 050017, PR China
| | - Xiangjun Li
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Hebei Medical University &Hebei Key Laboratory of Stomatology& Hebei Clinical Research Center for Oral Diseases, Shijiazhuang 050017, PR China.
| |
Collapse
|
45
|
Anyanechi CE, Shetty SS. Ameloblastoma of the jaws in adult: A retrospective review of local recurrent lesions based on the resection margin in the adjacent apparent healthy tissues. Heliyon 2023; 9:e16243. [PMID: 37251853 PMCID: PMC10209404 DOI: 10.1016/j.heliyon.2023.e16243] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 04/26/2023] [Accepted: 05/10/2023] [Indexed: 05/31/2023] Open
Abstract
Background The surgical treatment of ameloblastoma of the jaws remains contentious due to the variable recurrence rate amongst its variants, the tumor's local invasive behavior, and the lack of consensus among surgeons concerning the extent of resection in the contiguous healthy tissues. Objective To determine the recurrence rate of ameloblastoma and its association with the resection margins. Materials and methods This is a retrospective cohort study of the medical records of patients who underwent surgical resection of the jaws as the primary modality of treatment for ameloblastoma. Clinical data over the 26 years were analyzed for age, gender, site of the lesion, size, radiographic appearance, histopathological sub-type, and the incidence of recurrence post-treatment. Descriptive and bivariate statistics were computed. Results A retrospective audit of 234 cases was included in the study that was typical (solid/multicystic) ameloblastoma. The age of patients ranged from 20 to 66 years with a mean age of 33.4 ± 9.6 years, and a male-to-female ratio of 1.2: 1 (P = 0.52). The follicular and plexiform types accounted for the majority of histopathological variants (89.8%; P = 0.000). Overall, 6.8% of cases relapsed after the initial primary surgery. The rate of recurrence was high with a resection margin of 1.0 or 1.5 cm than 2.0 cm (P = 0.001). No case of recurrence was seen with a resection margin of 2.5 cm margin. Conclusion A low recurrence rate of 6.8% was noted in our series of cases. A wide 2.5 cm resection margin is recommended in the adjacent healthy tissues.
Collapse
Affiliation(s)
- Charles Ezechukwu Anyanechi
- Department of Oral and Maxillofacial Surgery, University of Calabar/University of Calabar Teaching Hospital, Calabar, Nigeria
| | - Sameep S. Shetty
- Department of Oral and Maxillofacial Surgery, Manipal College of Dental Sciences, Mangalore, 575001, India
- Manipal Academy of Higher Education, a Constituent of MAHE, Manipal, India
| |
Collapse
|
46
|
Ebeling M, Scheurer M, Sakkas A, Pietzka S, Schramm A, Wilde F. BRAF inhibitors in BRAF V600E-mutated ameloblastoma: systematic review of rare cases in the literature. Med Oncol 2023; 40:163. [PMID: 37115331 PMCID: PMC10147738 DOI: 10.1007/s12032-023-01993-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 03/08/2023] [Indexed: 04/29/2023]
Abstract
BACKGROUND Ameloblastoma in 66% of the cases harbor a somatic mutation of the "mitogen-activated protein kinase" signaling pathway (BRAF V600E). In V600E mutations, BRAF is in the permanent "on" state and relays the growth-promoting signals independently of the EGFR pathway. Therefore, mutant BRAF represents a target for handful of new drugs. METHODS We conducted a literature search, with the search terms "Vemurafenib, Dabrafenib, Ameloblastoma, and BRAF." These included seven case reports with nine patients who underwent monotherapy with Dabrafenib or Vemurafenib or combination therapy with Dabrafenib and Trametinib. RESULTS The patients age ranges from 10 years up to 86 years. The distribution of women and men is 4:5. Patients with an initial diagnosis of ameloblastoma, as well as recurrences or metastasized ameloblastoma were treated. Indications cover neoadjuvant therapy up to the use in metastasized patients in an irresectable state. Results ranging from "only" tumor size reduction to restitutio ad integrum. CONCLUSION We see the use of BRAF Inhibitors to reduce tumor size with consecutive surgical treatment as a reasonable option for therapy. However, we are aware that at present the data are based only on case reports with the longest follow-up of just 38 months. We encourage further clinical trials in the use of BRAF Inhibitors for selecting ameloblastoma patients in a multi-center setting.
Collapse
Affiliation(s)
- Marcel Ebeling
- Department of Oral and Plastic Maxillofacial Surgery, Military Hospital Ulm, Academic Hospital of the University of Ulm, Oberer Eselsberg 40, 89081, Ulm, Germany.
| | - Mario Scheurer
- Department of Oral and Plastic Maxillofacial Surgery, Military Hospital Ulm, Academic Hospital of the University of Ulm, Oberer Eselsberg 40, 89081, Ulm, Germany.
| | - Andreas Sakkas
- Department of Oral and Plastic Maxillofacial Surgery, Military Hospital Ulm, Academic Hospital of the University of Ulm, Oberer Eselsberg 40, 89081, Ulm, Germany
- Department of Oral and Plastic Maxillofacial Surgery, University Hospital Ulm, Albert-Einstein-Allee 10, 89081, Ulm, Germany
| | - Sebastian Pietzka
- Department of Oral and Plastic Maxillofacial Surgery, Military Hospital Ulm, Academic Hospital of the University of Ulm, Oberer Eselsberg 40, 89081, Ulm, Germany
- Department of Oral and Plastic Maxillofacial Surgery, University Hospital Ulm, Albert-Einstein-Allee 10, 89081, Ulm, Germany
| | - Alexander Schramm
- Department of Oral and Plastic Maxillofacial Surgery, Military Hospital Ulm, Academic Hospital of the University of Ulm, Oberer Eselsberg 40, 89081, Ulm, Germany
- Department of Oral and Plastic Maxillofacial Surgery, University Hospital Ulm, Albert-Einstein-Allee 10, 89081, Ulm, Germany
| | - Frank Wilde
- Department of Oral and Plastic Maxillofacial Surgery, Military Hospital Ulm, Academic Hospital of the University of Ulm, Oberer Eselsberg 40, 89081, Ulm, Germany
- Department of Oral and Plastic Maxillofacial Surgery, University Hospital Ulm, Albert-Einstein-Allee 10, 89081, Ulm, Germany
| |
Collapse
|
47
|
Cortese A, Spirito F, Claudio PP, Lo Muzio L, Ruggiero A, Gargiulo M. Mandibular Reconstruction after Resection of Ameloblastoma by Custom-Made CAD/CAM Mandibular Titanium Prosthesis: Two Case Reports, Finite Element Analysis and Discussion of the Technique. Dent J (Basel) 2023; 11:dj11040106. [PMID: 37185484 PMCID: PMC10137091 DOI: 10.3390/dj11040106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 03/28/2023] [Accepted: 04/18/2023] [Indexed: 05/17/2023] Open
Abstract
Virtual surgical planning for CAD/CAM mandibular reconstruction by titanium prosthesis was recently reported for resected cases. Even if some advantages are evident, difficulties that may arise for TMJ function after reconstruction originate from prosthesis contamination through oral mucosa dehiscence. In these two cases reported of mandibular reconstruction after resection of ameloblastoma by custom-made CAD/CAM titanium prosthesis, the procedures were aimed to preserve the TMJ glenoid cavity and articular disc avoiding functional problems for hemi-mandibular resections that included the condyle (as in case #1) or with condylar preservation (as in case #2) and avoiding intraoral incisions in both cases. The entire surgical planning and prosthetic fabrication were explained with specifications and the sequence of the surgical procedure. Finite elements analysis (FEA) was performed to check the force distribution and efficacy of the prosthetic device (case 1 with hemi-mandibular resection and rehabilitation). Although successful in these two cases, surgical reconstruction of the mandibular defect after resection by a CAD-CAM custom-made prosthesis still shows some drawbacks and failure risks. Several advantages of this technique and the surgical success in these two cases were presented, but limitations and side effects must be considered when cases are selected.
Collapse
Affiliation(s)
- Antonio Cortese
- Unit of Maxillofacial Surgery, Department of Medicine, Surgery, and Dentistry, University of Salerno, 84084 Salerno, Italy
| | - Francesca Spirito
- Department of Clinical and Experimental Medicine, University of Foggia, 71122 Foggia, Italy
| | - Pier Paolo Claudio
- Department of Pharmacology and Toxicology, Cancer Center & Research Institute, University of Mississippi Medical Center, Jackson, MS 39216, USA
- Department of Maxillofacial Surgery, Cancer Center & Research Institute, University of Mississippi Medical Center, Jackson, MS 39216, USA
| | - Lorenzo Lo Muzio
- Department of Clinical and Experimental Medicine, University of Foggia, 71122 Foggia, Italy
| | - Alessandro Ruggiero
- Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, Nr. 132, 84084 Fisciano, Italy
| | - Maurizio Gargiulo
- U.O.C. Chirurgia Maxillofacciale, A.O.R.N. "A. Cardarelli", Via A. Cardarelli, 80131 Naples, Italy
| |
Collapse
|
48
|
Dixit S, Kumar A, Srinivasan K. A Current Review of Machine Learning and Deep Learning Models in Oral Cancer Diagnosis: Recent Technologies, Open Challenges, and Future Research Directions. Diagnostics (Basel) 2023; 13:diagnostics13071353. [PMID: 37046571 PMCID: PMC10093759 DOI: 10.3390/diagnostics13071353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Revised: 03/25/2023] [Accepted: 04/03/2023] [Indexed: 04/08/2023] Open
Abstract
Cancer is a problematic global health issue with an extremely high fatality rate throughout the world. The application of various machine learning techniques that have appeared in the field of cancer diagnosis in recent years has provided meaningful insights into efficient and precise treatment decision-making. Due to rapid advancements in sequencing technologies, the detection of cancer based on gene expression data has improved over the years. Different types of cancer affect different parts of the body in different ways. Cancer that affects the mouth, lip, and upper throat is known as oral cancer, which is the sixth most prevalent form of cancer worldwide. India, Bangladesh, China, the United States, and Pakistan are the top five countries with the highest rates of oral cavity disease and lip cancer. The major causes of oral cancer are excessive use of tobacco and cigarette smoking. Many people’s lives can be saved if oral cancer (OC) can be detected early. Early identification and diagnosis could assist doctors in providing better patient care and effective treatment. OC screening may advance with the implementation of artificial intelligence (AI) techniques. AI can provide assistance to the oncology sector by accurately analyzing a large dataset from several imaging modalities. This review deals with the implementation of AI during the early stages of cancer for the proper detection and treatment of OC. Furthermore, performance evaluations of several DL and ML models have been carried out to show that the DL model can overcome the difficult challenges associated with early cancerous lesions in the mouth. For this review, we have followed the rules recommended for the extension of scoping reviews and meta-analyses (PRISMA-ScR). Examining the reference lists for the chosen articles helped us gather more details on the subject. Additionally, we discussed AI’s drawbacks and its potential use in research on oral cancer. There are methods for reducing risk factors, such as reducing the use of tobacco and alcohol, as well as immunization against HPV infection to avoid oral cancer, or to lessen the burden of the disease. Additionally, officious methods for preventing oral diseases include training programs for doctors and patients as well as facilitating early diagnosis via screening high-risk populations for the disease.
Collapse
Affiliation(s)
- Shriniket Dixit
- School of Computer Science and Engineering, Vellore Institute of Technology, Vellore 632014, India
| | - Anant Kumar
- School of Bioscience and Technology, Vellore Institute of Technology, Vellore 632014, India
| | - Kathiravan Srinivasan
- School of Computer Science and Engineering, Vellore Institute of Technology, Vellore 632014, India
| |
Collapse
|
49
|
Ghosh S, Guha P. A rare case report of acanthomatous ameloblastoma based on aspiration cytology with histopathological confirmation. Cytojournal 2023; 20:7. [PMID: 37026152 PMCID: PMC10070259 DOI: 10.25259/cytojournal_2_2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Accepted: 04/04/2022] [Indexed: 03/08/2023] Open
Abstract
Ameloblastoma is a benign progressively growing intraosseous epithelial odontogenic tumor. It is characterized by expansion and a tendency for a local recurrence if inadequately removed. Since it has an aggressive clinical course, surgical removal and histopathological examination should be done for appropriate management. In this case study, a 52-year-old female patient came to our institute with a complaint of swelling in the lower midline of gum. The patient has a history of bleeding gum and swelling 25 years back, for that she underwent tooth extraction in a private clinic. The patient again developed gum swelling year back, for that she underwent tooth extraction in a private clinic. However, this time her symptoms persisted, and for this reason, the patient visited our institute. On palpation, the lesion was firm and non-tender, appeared to arise from mandibular bone. Magnetic resonance imaging (multiplanar and multisequence) was done and it was reported as expansile multiseptate mandibular symphysis mass, possibly ameloblastoma. FNAC was done from the right lower alveolus in a private pathology laboratory, which was reported as pleomorphic adenoma with focal squamous metaplasia. These slides were reviewed in our institute and we reported it as suggestive of odontogenic tumor, favoring ameloblastoma. Biopsy and histopathological examination was advised for confirmation. Tumor was surgically enucleated along with curettage of the site and excised specimen was sent for histopathological examination to the pathology department of our institute. Based on the clinical, radiological, cytological, and histopathological examination, a final diagnosis of acanthomatous ameloblastoma was made. To the best of our knowledge, very few cases of acanthomatous type of ameloblastomas have been diagnosed on aspiration cytology followed by excision and histopathological confirmation. In this case study, we tried to highlight the importance of early diagnosis by cytology which helps in early treatment by surgical excision of this locally aggressive tumor.
Collapse
Affiliation(s)
- Shreshtha Ghosh
- Department of Pathology, Kalyan Singh Super Speciality Cancer Institute, Lucknow, Uttar Pradesh, India,
| | - Priyadarshini Guha
- Department of Pathology, Kalyan Singh Super Speciality Cancer Institute, Lucknow, Uttar Pradesh, India,
| |
Collapse
|
50
|
Awotoye W, Whitt JC, Yoo B, Farooqi MS, Farrow EG, Allareddy V, Amendt BA, Rengasamy Venugopalan S. Genetic heterogeneity and enrichment of variants in DNA-repair genes in ameloblastoma. J Oral Pathol Med 2023; 52:263-270. [PMID: 36715450 DOI: 10.1111/jop.13410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 01/25/2023] [Indexed: 01/31/2023]
Abstract
OBJECTIVE Ameloblastomas are a group of relatively common odontogenic tumors that frequently originate from the dental epithelium. These tumors are aggressive in nature and present as slow-growing painless cortical expansion of the jaw. Histologically, the follicular and plexiform subtypes constitute two-thirds of solid/multicystic ameloblastomas. The objective of this study was to understand the genetic architecture of follicular and plexiform ameloblastomas using deep whole-exome sequencing. METHODS Archived formalin-fixed paraffin-embedded tissue blocks of follicular (n = 4) and plexiform (n = 6) ameloblastomas were retrieved and genomic DNAs were isolated from the tumor tissue dissected from the formalin-fixed paraffin-embedded block. The exomes were enriched using the Integrated DNA Technologies Exome Research Panel (IDT, Coralville, IA) and paired-end sequencing was completed on an Illumina NovaSeq 6000 with an average output of 20 GB of data resulting in a mean coverage of 400×. Variant analysis was completed using custom-developed software: Rapid Understanding of Nucleotide variant Effect Software and variant integration and knowledge interpretation in genomes. RESULTS Our analyses focused on examining somatic variants (gnomAD minor allele frequency ≤1%) in genes found on an Food and Drug Administration -approved clinical cancer sequencing panel (FoundationOne®CDx). In follicular tumors, variants (>20% of the reads) were identified in BRAF, KMT2D, and ABL1 genes. In plexiform tumors, variants (>20% of the reads) were identified in ALK, BRAF, KRAS, KMT2D, SMO, KMT2A, and BRCA2 genes. Enrichment analysis showed a significant role of DNA repair genes in the development of these tumors. CONCLUSION The variants identified in follicular and plexiform ameloblastomas were enriched in DNA-repair genes. The observed genetic heterogeneity in these ameloblastomas may contribute to the aggressive nature and recurrence risk of these tumors.
Collapse
Affiliation(s)
- Waheed Awotoye
- Iowa Institute for Oral Health Research, University of Iowa, Iowa City, Iowa, USA
| | - Joseph Craig Whitt
- School of Dentistry, University of Missouri Kansas City, Kansas City, Missouri, USA
| | - Byunggil Yoo
- Children's Mercy Hospital Center for Pediatric Genomic Medicine, Kansas City, Missouri, USA
| | - Midhat S Farooqi
- Department of Pathology, Children's Mercy Hospital, University of Missouri-Kansas City School of Medicine, Kansas City, Missouri, USA
| | - Emily G Farrow
- Children's Mercy Hospital Center for Pediatric Genomic Medicine, Kansas City, Missouri, USA
| | - Veerasathpurush Allareddy
- Department of Orthodontics, University of Illinois Chicago, College of Dentistry, Chicago, Illinois, USA
| | - Brad A Amendt
- Department of Anatomy & Cell Biology, University of Iowa, Iowa City, Iowa, USA
| | - Shankar Rengasamy Venugopalan
- Iowa Institute for Oral Health Research, University of Iowa, Iowa City, Iowa, USA
- School of Dentistry, University of Missouri Kansas City, Kansas City, Missouri, USA
- Department of Orthodontics, University of Iowa College of Dentistry and Dental Clinics, Iowa City, Iowa, USA
| |
Collapse
|