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Renzi A, De Bonis P, Morandi L, Lenzi J, Tinto D, Rigillo A, Bettini G, Bellei E, Sabattini S. Prevalence of p53 dysregulations in feline oral squamous cell carcinoma and non-neoplastic oral mucosa. PLoS One 2019; 14:e0215621. [PMID: 30998743 PMCID: PMC6472789 DOI: 10.1371/journal.pone.0215621] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2019] [Accepted: 04/04/2019] [Indexed: 02/08/2023] Open
Abstract
Squamous cell carcinoma is the most common malignant oral tumor in cats. The late presentation is one of the factors contributing to the detrimental prognosis of this disease. The immunohistochemical expression of the p53 tumor suppressor protein has been reported in 24% to 65% of feline oral squamous cell carcinomas, but no study has systematically evaluated in this tumor the presence of p53 encoding gene (TP53) mutations. The aim of this retrospective study was to determine whether p53 immunohistochemistry accurately reflects the mutational status of the TP53 gene in feline oral squamous cell carcinoma. Additionally, the prevalence of p53 dysregulation in feline oral squamous cell carcinoma was compared with that of feline non-neoplastic oral mucosa, in order to investigate the relevance of these dysregulations in cancer development. The association between p53 dysregulations and exposure to environmental tobacco smoke and tumor characteristics was further assessed. Twenty-six incisional biopsies of oral squamous cell carcinomas and 10 cases each of lingual eosinophilic granuloma, chronic gingivostomatitis and normal oral mucosa were included in the study. Eighteen squamous cell carcinomas (69%) expressed p53 and 18 had mutations in exons 5-8 of TP53. The agreement between immunohistochemistry and mutation analysis was 77%. None of non-neoplastic oral mucosa samples had a positive immunohistochemical staining, while one case each of eosinophilic granuloma and chronic gingivostomatitis harbored TP53 mutations. Unlike previously hypothesized, p53 dysregulations were not associated with exposure to environmental tobacco smoke. These results suggest an important role of p53 in feline oral tumorigenesis. Additionally, the immunohistochemical detection of p53 expression appears to reflect the presence of TP53 mutations in the majority of cases. It remains to be determined if the screening for p53 dysregulations, alone or in association with other markers, can eventually contribute to the early detection of this devastating disease.
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Affiliation(s)
- Andrea Renzi
- Department of Veterinary Medical Sciences, University of Bologna, Ozzano Emilia, Bologna, Italy
| | - Paola De Bonis
- Department of Veterinary Medical Sciences, University of Bologna, Ozzano Emilia, Bologna, Italy
| | - Luca Morandi
- “M. Malpighi” Section of Anatomic Pathology, Department of Biomedical and Neuromotor Sciences, Bellaria Hospital, University of Bologna, Bologna, Italy
| | - Jacopo Lenzi
- Section of Hygiene, Public Health and Medical Statistics, Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Debora Tinto
- Department of Veterinary Medical Sciences, University of Bologna, Ozzano Emilia, Bologna, Italy
| | - Antonella Rigillo
- Department of Veterinary Medical Sciences, University of Bologna, Ozzano Emilia, Bologna, Italy
| | - Giuliano Bettini
- Department of Veterinary Medical Sciences, University of Bologna, Ozzano Emilia, Bologna, Italy
| | - Emma Bellei
- Department of Veterinary Medical Sciences, University of Bologna, Ozzano Emilia, Bologna, Italy
| | - Silvia Sabattini
- Department of Veterinary Medical Sciences, University of Bologna, Ozzano Emilia, Bologna, Italy
- * E-mail:
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Kshirsagar RA, Bhende RC, Raut PH, Mahajan V, Tapadiya VJ, Singh V. Odontogenic Keratocyst: Developing a Protocol for Surgical Intervention. Ann Maxillofac Surg 2019; 9:152-157. [PMID: 31293945 PMCID: PMC6585208 DOI: 10.4103/ams.ams_137_18] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
The aim of this study was to report the outcome of a conservative treatment protocol – “enucleation and packing open” for odontogenic keratocyst (OKC). Ten patients with OKC were treated at our institute by peripheral ostectomy, enucleation followed by open packing. This conservative treatment protocol was selected because of relatively young age of the patients and relatively large size of the lesions. All the cases were monitored at regular predetermined intervals using clinical evaluation and panoramic radiographs. There was no evidence of recurrence during follow-up. The conservative treatment protocol for OKC, based on enucleation followed by open packing would be a possible choice in view of the simplicity of surgical procedure and low morbidity. This treatment modality has a low recurrence rate and may be particularly useful in young patients and patients with advanced systemic disease not amenable to major surgical intervention.
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Affiliation(s)
- Rajesh Ashok Kshirsagar
- Department of Oral and Maxillofacial Surgery, Bharati Vidyapeeth Dental College and Hospital, Pune, Maharashtra, India
| | - Rajat Chandrashekhar Bhende
- Department of Oral and Maxillofacial Surgery, Bharati Vidyapeeth Dental College and Hospital, Pune, Maharashtra, India
| | - Pratik Hemantkumar Raut
- Department of Oral and Maxillofacial Surgery, Bharati Vidyapeeth Dental College and Hospital, Pune, Maharashtra, India
| | - Vrushika Mahajan
- Department of Oral and Maxillofacial Surgery, Bharati Vidyapeeth Dental College and Hospital, Pune, Maharashtra, India
| | - Vishal Jugalkishor Tapadiya
- Department of Oral and Maxillofacial Surgery, Bharati Vidyapeeth Dental College and Hospital, Pune, Maharashtra, India
| | - Vikram Singh
- Department of Oral and Maxillofacial Surgery, Bharati Vidyapeeth Dental College and Hospital, Pune, Maharashtra, India
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Zaid K, Azar-Maalouf E, Barakat C, Chantiri M. p53 Overexpression in Oral Mucosa in Relation to Shisha Smoking in Syria and Lebanon. Asian Pac J Cancer Prev 2018; 19:1879-1882. [PMID: 30049200 PMCID: PMC6165666 DOI: 10.22034/apjcp.2018.19.7.1879] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Introduction Shisha (waterpipe) smoking is becoming a very prevalent form of tobacco consumption in the Middle east and use is growing over the world. Smoking-related malignancies have a high genome-wide burden of mutations, including examples in the gene encoding p53. Aims To investigate alterations in p53 immunohistochemical expression in the normal, pre-malignant, malignant oral mucosa in relation to Shisha smoking habits. Materials and Methods A total of 105 paraffin embedded tissue sections of OSCCs (52 smokers,53 non-smokers), 96 of premalignant lesions (48 smokers,48 non-smokers) and 60 normal oral mucosa. Some 30 patients with a history of Shisha smoking daily for more than 5 years were also investigated for mutant expression of p53. Tissue samples were considered positive for p53 staining when any positive cells of epithelial origin could be detected. Results The majority (74.3%) of oral squamous cell carcinomas showed positive staining for p53 expression (83.1% and 65.5% with Shisha smokers and non-smokers, respectively). In the 96 premalignant lesions, about 23% from non-smokers and 41.7% from smokers showed p53 positivity. In normal epithelium, P53 positive cells were noted in 6.6% of non-smokers and 16.6% of smokers. Positive correlations with Shisha smoking were evident for the following groups: WDOSCC, MDOSCC, mild dysplasia G1, moderate dysplasia G2 and in normal mucosa using Student’s t- test, P value<0.05. Conclusion These results strongly suggest that p53 mutations are associated with Shisha smoking in OSCC, pre-malignant lesions and normal mucosa of the oral cavity.
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Affiliation(s)
- Khaled Zaid
- Faculty of Dentistry, Al-Sham Private University, Damascus, Syria.
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Karpinsky G, Krawczyk MA, Izycka-Swieszewska E, Fatyga A, Budka A, Balwierz W, Sobol G, Zalewska-Szewczyk B, Rychlowska-Pruszynska M, Klepacka T, Dembowska-Baginska B, Kazanowska B, Gabrych A, Bien E. Tumor expression of survivin, p53, cyclin D1, osteopontin and fibronectin in predicting the response to neo-adjuvant chemotherapy in children with advanced malignant peripheral nerve sheath tumor. J Cancer Res Clin Oncol 2018; 144:519-529. [PMID: 29332262 PMCID: PMC5816118 DOI: 10.1007/s00432-018-2580-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Accepted: 01/07/2018] [Indexed: 11/28/2022]
Abstract
PURPOSE Selected cell-cycle regulators and extracellular matrix proteins were found to play roles in malignant peripheral nerve sheath tumor (MPNST) biology. We aimed to analyze whether initial tumor tissue expressions of survivin, p53, cyclin D1, osteopontin (OPN) and fibronectin (FN) correlate with the response to neo-adjuvant CHT (naCHT) in children with advanced inoperable MPNST. METHODS The study included 26 children with MPNST (M/F 14/12, median age 130 months) treated in Polish centers of pediatric oncology between 1992 and 2013. Tissue expression of markers was studied immunohistochemically in the manually performed tissue microarrays and assessed semi-quantitatively as low and high, based on the rate of positive cells and staining intensity. RESULTS Good response to naCHT was noted in 47.6%, while poor-in 52.4% of patients. The response to naCHT was influenced negatively by the presence of neurofibromatosis NF1 and high initial tumor tissue expression of OPN, survivin, p53 and cyclin D1. Patients with high tumor expression of either OPN, survivin or p53 and those with simultaneous high expression of ≥ 3 of the markers, responded significantly worse to naCHT, than patients, in whom expression of ≤ 2 markers were detected at diagnosis. Nearly, 85% of patients expressing ≥ 3 markers, responded poor to CHT; while 87.5% of children, expressing ≤ 2 markers, were good responders. CONCLUSION The initial tumor tissue expression of OPN, survivin, p53 and cyclin D1 may serve as markers to predict response to naCHT in pediatric advanced MPNST. Future studies in more numerous group of patients are needed to confirm these preliminary results.
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Affiliation(s)
| | - Malgorzata A Krawczyk
- Department of Pediatrics, Hematology and Oncology, Medical University of Gdansk, 7 Debinki Street, 80-211, Gdansk, Poland
| | - Ewa Izycka-Swieszewska
- Department of Pathology and Neuropathology, Medical University of Gdansk, 1 Debinki Street, Gdansk, Poland
| | - Aleksandra Fatyga
- Department of Pediatrics, Hematology and Oncology, University Clinical Centre, 7 Debinki Street, Gdansk, Poland
| | - Agnieszka Budka
- Department of Pediatrics, Hematology and Oncology, University Clinical Centre, 7 Debinki Street, Gdansk, Poland
| | - Walentyna Balwierz
- Department of Pediatric Oncology and Hematology, Jagiellonian University Medical College, 265 Wielicka Street, Krakow, Poland
| | - Grazyna Sobol
- Department of Pediatrics, Medical University of Silesia, 15 Medykow Street, Katowice, Poland
| | - Beata Zalewska-Szewczyk
- Department of Pediatrics, Oncology, Hematology and Diabetology, Medical University of Lodz, 36/50 Sporna Street, Lodz, Poland
| | | | - Teresa Klepacka
- Department of Pathology, Institute of Mother and Child, 17A Kasprzaka Street, Warsaw, Poland
| | | | - Bernarda Kazanowska
- Department of Pediatric Bone Marrow Transplantation, Oncology and Hematology, Wroclaw Medical University, 213 Borowska Street, Wroclaw, Poland
| | - Anna Gabrych
- Department of Pediatrics, Hematology and Oncology, University Clinical Centre, 7 Debinki Street, Gdansk, Poland
| | - Ewa Bien
- Department of Pediatrics, Hematology and Oncology, Medical University of Gdansk, 7 Debinki Street, 80-211, Gdansk, Poland.
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5
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Sinha N, Panda PK, Naik PP, Das DN, Mukhopadhyay S, Maiti TK, Shanmugam MK, Chinnathambi A, Zayed ME, Alharbi SA, Sethi G, Agarwal R, Bhutia SK. Abrus
agglutinin promotes irreparable DNA damage by triggering ROS generation followed by ATM-p73 mediated apoptosis in oral squamous cell carcinoma. Mol Carcinog 2017; 56:2400-2413. [DOI: 10.1002/mc.22679] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Revised: 05/05/2017] [Accepted: 05/19/2017] [Indexed: 11/11/2022]
Affiliation(s)
- Niharika Sinha
- Department of Life Science; National Institute of Technology; Rourkela India
| | - Prashanta K. Panda
- Department of Life Science; National Institute of Technology; Rourkela India
| | - Prajna P. Naik
- Department of Life Science; National Institute of Technology; Rourkela India
| | - Durgesh N. Das
- Department of Life Science; National Institute of Technology; Rourkela India
| | | | - Tapas K. Maiti
- Department of Biotechnology; Indian Institute of Technology; Kharagpur India
| | - Muthu K. Shanmugam
- Department of Pharmacology; Yong Loo Lin School of Medicine; National University of Singapore; Singapore Singapore
| | - Arunachalam Chinnathambi
- Department of Botany and Microbiology; College of Science; King Saud University; Riyadh Kingdom of Saudi Arabia
| | - ME Zayed
- Department of Botany and Microbiology; College of Science; King Saud University; Riyadh Kingdom of Saudi Arabia
| | - Sulaiman A. Alharbi
- Department of Botany and Microbiology; College of Science; King Saud University; Riyadh Kingdom of Saudi Arabia
| | - Gautam Sethi
- Department of Pharmacology; Yong Loo Lin School of Medicine; National University of Singapore; Singapore Singapore
- Department of Botany and Microbiology; College of Science; King Saud University; Riyadh Kingdom of Saudi Arabia
| | - Rajesh Agarwal
- Skaggs School of Pharmacy and Pharmaceutical Sciences; University of Colorado Denver; Aurora Colorado
| | - Sujit K. Bhutia
- Department of Life Science; National Institute of Technology; Rourkela India
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Singh J, Jayaraj R, Baxi S, Mileva M, Skinner J, Dhand NK, Thomas M. Immunohistochemical expression levels of p53 and eIF4E markers in histologically negative surgical margins, and their association with the clinical outcome of patients with head and neck squamous cell carcinoma. Mol Clin Oncol 2015; 4:166-172. [PMID: 26893854 DOI: 10.3892/mco.2015.689] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Accepted: 10/28/2015] [Indexed: 12/18/2022] Open
Abstract
Molecular markers can be used to identify residual cancer at the surgical margins of head and neck squamous cell carcinoma (HNSCC) and assist in evaluating the complete resection of the tumour. The purpose of the present study was to investigate the expression levels of prognostic molecular markers at the histological tumour free surgical margins. In the present clinical retrospective study, 24/48 patients were selected with negative surgical margins for further analysis with immunohistochemical staining. Contingency tables and Fisher's exact tests were used to investigate the association between the expression levels of p53 and eukaryotic translation imitation factor 4E (eIF4E) with the clinical outcomes for patients with HNSCC. The expression levels of p53 and eIF4E were 54.2 and 87.5%, respectively, in the surgical margins of patients with HNSCC. A total of 3/7 patients with recurrent cancer (42.8%) were identified with p53-positive margins, and 6 (85.7%) patients exhibited recurrence with eIF4e-positive margins. No statistically significant differences were identified for the recurrence risk between the overexpression of p53 and eIF4E in the surgical margins (P=0.88 and P=0.99, respectively). The eIF4E marker appears to be a more marked prognosticator compared with p53, as overexpression of eIF4E was identified in the margins of 6/7 patients with local recurrence.
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Affiliation(s)
- Jagtar Singh
- School of Psychological and Clinical Sciences, Charles Darwin University, Darwin, NT 0815, Australia
| | - Rama Jayaraj
- School of Psychological and Clinical Sciences, Charles Darwin University, Darwin, NT 0815, Australia
| | | | - Mariana Mileva
- Department of Anatomical Pathology, Royal Darwin Hospital, Darwin, NT 0810, Australia
| | - John Skinner
- Department of Anatomical Pathology, Royal Darwin Hospital, Darwin, NT 0810, Australia
| | - Navneet K Dhand
- Faculty of Veterinary Science, University of Sydney, Camden, NSW 2570, Australia
| | - Mahiban Thomas
- Department of Head and Neck Surgery, Royal Darwin Hospital, Darwin, NT 0811, Australia
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7
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Alphitolic acid, an anti-inflammatory triterpene, induces apoptosis and autophagy in oral squamous cell carcinoma cells, in part, through a p53-dependent pathway. J Funct Foods 2015. [DOI: 10.1016/j.jff.2015.07.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
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8
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Huang CY, Tsai CW, Hsu CM, Shih LC, Chang WS, Shui HA, Bau DT. The role of XRCC6/Ku70 in nasopharyngeal carcinoma. Int J Oral Maxillofac Surg 2015; 44:1480-5. [PMID: 26149939 DOI: 10.1016/j.ijom.2015.06.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Revised: 06/08/2015] [Accepted: 06/09/2015] [Indexed: 12/09/2022]
Abstract
The association between XRCC6/Ku70, an upstream player in the DNA double-strand break repair system, and the risk of nasopharyngeal carcinoma (NPC) was examined. In this case-control study, 176 NPC patients and 352 cancer-free controls were genotyped, and the associations of XRCC6 promoter T-991C (rs5751129), promoter G-57C (rs2267437), promoter G-31A (rs132770), and intron 3 (rs132774) polymorphisms with NPC risk were evaluated. NPC tissue samples were also assessed for their XRCC6 mRNA and protein expression by real-time quantitative reverse transcription PCR and Western blotting, respectively. With regard to the XRCC6 promoter T-991C, the TC and CC genotypes were associated with a significantly increased risk of NPC compared with wild-type TT genotype (adjusted odds ratio 2.02 and 3.42, 95% confidence interval 1.21-3.32 and 1.28-8.94, P=0.0072 and 0.0165, respectively). The mRNA and protein expression levels for NPC tissues revealed significantly lower XRCC6 mRNA and protein expression in the NPC samples with TC/CC genotypes compared to those with the TT genotype (P=0.0210 and 0.0164, respectively). These findings suggest that XRCC6 may play an important role in the carcinogenesis of NPC and could serve as a chemotherapeutic target for personalized medicine and therapy.
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Affiliation(s)
- C-Y Huang
- Graduate Institute of Medical Sciences, National Defence Medical Centre, Taipei, Taiwan, ROC; Taichung Armed Forces General Hospital, Taichung, Taiwan, ROC
| | - C-W Tsai
- Graduate Institute of Basic Medical Science, China Medical University, Taichung, Taiwan, ROC; Terry Fox Cancer Research Laboratory, China Medical University Hospital, Taichung, Taiwan, ROC
| | - C-M Hsu
- Terry Fox Cancer Research Laboratory, China Medical University Hospital, Taichung, Taiwan, ROC
| | - L-C Shih
- Terry Fox Cancer Research Laboratory, China Medical University Hospital, Taichung, Taiwan, ROC
| | - W-S Chang
- Terry Fox Cancer Research Laboratory, China Medical University Hospital, Taichung, Taiwan, ROC; Graduate Institute of Clinical Medical Science, China Medical University, Taichung, Taiwan, ROC
| | - H-A Shui
- Graduate Institute of Medical Sciences, National Defence Medical Centre, Taipei, Taiwan, ROC
| | - D-T Bau
- Graduate Institute of Basic Medical Science, China Medical University, Taichung, Taiwan, ROC; Terry Fox Cancer Research Laboratory, China Medical University Hospital, Taichung, Taiwan, ROC; Graduate Institute of Clinical Medical Science, China Medical University, Taichung, Taiwan, ROC.
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9
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Ow TJ, Pitts CE, Kabarriti R, Garg MK. Effective Biomarkers and Radiation Treatment in Head and Neck Cancer. Arch Pathol Lab Med 2015; 139:1379-88. [PMID: 26046489 DOI: 10.5858/arpa.2014-0574-ra] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
CONTEXT Radiation is a key arm in the multidisciplinary treatment of patients with head and neck squamous cell carcinoma. During the past 2 decades, significant changes in the way radiation therapy is planned and delivered have improved efficacy and decreased toxicity. Refined approaches in the application of radiation and chemoradiation have led to organ-sparing treatment regimens for laryngeal and pharyngeal cancers and have improved local and regional control rates in the postoperative, adjuvant setting. The molecular and genetic determinants of tumor cell response to radiation have been studied, and several potential biomarkers are emerging that could further improve application and efficacy of radiation treatment in head and neck squamous cell carcinoma. OBJECTIVE To discuss the current understanding of potential biomarkers related to radiation response in head and neck squamous cell carcinoma. DATA SOURCES Existing published literature. CONCLUSIONS Several potential biomarkers are actively being studied as predictors and targets to improve the use and efficacy of radiation therapy to treat head and neck squamous cell carcinoma. Several promising candidates have been defined, and new markers are on the horizon.
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Affiliation(s)
| | | | | | - Madhur K Garg
- From the Departments of Otorhinolaryngology-Head and Neck Surgery (Drs Ow and Garg), Pathology (Dr Ow), Radiation Oncology (Drs Kabarriti and Garg), and Urology (Dr Garg) Montefiore Medical Center, Bronx, New York; and the Albert Einstein College of Medicine (Drs Ow, Kabarriti, and Garg, and Ms Pitts), Bronx
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10
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Todorova TA, Jordanov SH, Stancheva GS, Chalakov IJ, Melnicharov MB, Kunev KV, Mitev VI, Kaneva RP, Goranova TE. Mutational Status of CDKN2A and TP53 Genes in Laryngeal Squamous Cell Carcinoma. Pathol Oncol Res 2014; 21:413-21. [PMID: 25149524 DOI: 10.1007/s12253-014-9836-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2014] [Accepted: 08/13/2014] [Indexed: 02/07/2023]
Abstract
Laryngeal squamous cell carcinoma (LSCC) is the second most common tumour of the head and neck. It is characterized by frequent aberrations in two cell-cycle regulators--CDKN2A and TP53. However, LSCC has been often studied as a part of the group of head and neck cancers and not as an individual entity. In the current study we aimed to examine mutation status of CDKN2A and TP53 genes in 108 LSCC patients. DNA was extracted from fresh-frozen tumour tissues; exons 1-3 of CDKN2A and exons 5-8 of TP53 were screened for mutations by direct sequencing. Genetic aberrations in CDKN2A were found in 16 (14.2%) and those in TP53--in 56/108 (51.9%) tumours. Seven mutations (two insertions, three deletions, one missense and one silent) detected in CDKN2A were not described previously. Also, we found seven novel deletions and a novel indel in TP53. No significant associations with clinical features were found. However, TP53 mutations were predominantly observed in smokers with advanced stage tumours. Screening for genetic aberrations in a defined group of LSCC contributes to the knowledge about laryngeal carcinogenesis. Further investigations are required to confirm the observed trends in associations with clinical features.
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Affiliation(s)
- Teodora A Todorova
- Molecular Medicine Center, Medical University-Sofia, 2 Zdrave street, Sofia, 1431, Bulgaria
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11
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Singh J, Jayaraj R, Baxi S, Mileva M, Curtin J, Thomas M. An Australian retrospective study to evaluate the prognostic role of p53 and eIF4E cancer markers in patients with head and neck squamous cell carcinoma (HNSCC): study protocol. Asian Pac J Cancer Prev 2014; 14:4717-21. [PMID: 24083732 DOI: 10.7314/apjcp.2013.14.8.4717] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Complete surgical resection of the primary tumour is a crucial predictive step for head and neck squamous cell carcinoma (HNSCC), because incomplete resection may lead to increase in the recurrence rate. Molecular cancer markers have been investigated as potential predictors of prognosis marker, to identify patients who are at high risk of local recurrence. This retrospective study aimed to determine the prognostic correlation between p53 and eIF4E expression and clinical characteristics, recurrence and overall survival. Forty eight HNSCC patients were selected between 2006 and 2009 diagnosed at the Royal Darwin Hospital, Darwin, Northern Territory, Australia. Out of 48, only those 24 with negative surgical margins with hematoxylin and eosin (HandE) were chosen for further analysis. A total of 77 surgical margins were obtained and subsequently analysed by immunohistochemical (IHC) staining with monoclonal p53 and polyclonal eIF4E antibodies. Contingency table and χ2-test were used to investigate the correlation between p53 and eIF4E expression and clinical characteristics, recurrence and overall survival of the HNSCC patients. The follow up period was 74 months (range 1-74 months). The Kaplan-Meier method was used to generate recurrence and survival curves. This is a first retrospective study of Northern Territory patients, including Indigenous and non-Indigenous Australians. Molecular study of surgical margins could help to identify patients with and without clear margins after surgery and help in choice of the most appropriate adjuvant treatment for HNSCC patients.
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Affiliation(s)
- Jagtar Singh
- School of Psychological and Clinical Sciences, Charles Darwin University, Darwin, Northern Territory, Australia E-mail :
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12
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Development of anticancer drugs based on the hallmarks of tumor cells. Tumour Biol 2014; 35:3981-95. [DOI: 10.1007/s13277-014-1649-y] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2013] [Accepted: 01/12/2014] [Indexed: 12/19/2022] Open
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13
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Francis G, Dileep Kumar U, Nalinakumari KR, Jayasree K, Kannan S. Accumulation of inactive p53 protein in oral squamous cell carcinoma: stabilization by protein interaction. Eur J Oral Sci 2012; 121:21-8. [DOI: 10.1111/eos.12007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/19/2012] [Indexed: 11/29/2022]
Affiliation(s)
- Geo Francis
- Laboratory of Cell Cycle Regulation & Molecular Oncology; Division of Cancer Research; Regional Cancer Centre; Thiruvananthapuram; Kerala; India
| | - U Dileep Kumar
- Laboratory of Cell Cycle Regulation & Molecular Oncology; Division of Cancer Research; Regional Cancer Centre; Thiruvananthapuram; Kerala; India
| | - KR Nalinakumari
- Division of Dental Surgery; Regional Cancer Centre; Thiruvananthapuram; Kerala; India
| | - K Jayasree
- Division of Pathology; Regional Cancer Centre; Thiruvananthapuram; Kerala; India
| | - S Kannan
- Laboratory of Cell Cycle Regulation & Molecular Oncology; Division of Cancer Research; Regional Cancer Centre; Thiruvananthapuram; Kerala; India
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14
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Roh JL, Ko JH, Moon SJ, Ryu CH, Choi JY, Koch WM. The p53-reactivating small-molecule RITA enhances cisplatin-induced cytotoxicity and apoptosis in head and neck cancer. Cancer Lett 2012; 325:35-41. [PMID: 22634494 DOI: 10.1016/j.canlet.2012.05.020] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2012] [Revised: 05/15/2012] [Accepted: 05/16/2012] [Indexed: 01/08/2023]
Abstract
We evaluated whether the restoration of p53 function by the p53-reactivating small molecule RITA (reactivation of p53 and induction of tumor cell apoptosis enhances cisplatin-induced cytotoxicity and apoptosis in head-and-neck cancer (HNC). RITA induced prominent accumulation and reactivation of p53 in a wild-type TP53-bearing HNC cell line. RITA showed maximal growth suppression in tumor cells showing MDM2-dependent p53 degradation. RITA promoted apoptosis in association with upregulation of p21, BAX, and cleaved caspase-3; notably, the apoptotic response was blocked by pifithrin-α, demonstrating its p53 dependence. With increasing concentrations, RITA strongly induced apoptosis rather than G2-phase arrest. In combination therapy, RITA enhanced cisplatin-induced growth inhibition and apoptosis of HNC cells invitro and in vivo. Our data suggest that the restoration of p53 tumor-suppressive function by RITA enhances the cytotoxicity and apoptosis of cisplatin, an action that may offer an attractive strategy for treating HNC.
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Affiliation(s)
- Jong-Lyel Roh
- Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea.
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Van der Vorst S, Dekairelle AF, Weynand B, Hamoir M, Gala JL. Assessment of p53 functional activity in tumor cells and histologically normal mucosa from patients with head and neck squamous cell carcinoma. Head Neck 2011; 34:1542-50. [PMID: 22109999 DOI: 10.1002/hed.21960] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2011] [Revised: 08/04/2011] [Accepted: 09/06/2011] [Indexed: 11/06/2022] Open
Abstract
BACKGROUND The purpose of this study was to investigate the value of p53 functional analysis of separated alleles in yeast (FASAY) as a witness of p53/p21 pathway alteration in head and neck squamous cell carcinoma (HNSCC). METHODS The p53 transcriptional activity was prospectively analyzed in 82 newly diagnosed patients with HNSCC. FASAY and p53 immunostaining were carried out on paired tumoral and histologically normal tissues. The predictive value of FASAY for locoregional recurrence was assessed by Cox survival analysis. RESULTS Loss of p53/p21 transcriptional activity was encountered in 88% tumoral and 18% histologically normal samples, associated with mutations (79%) and insertions/deletions (21%). The p53 overexpression underestimated p53 transcriptional abnormalities. FASAY-positive histologically normal mucosa was significantly associated with locoregional recurrence. CONCLUSION FASAY positivity indicates field cancerization in a subgroup of patients with HNSCC, in which nonfunctional p53 was significantly associated with locoregional recurrence. This prompted us to pursue the study on the p53 functional status of normal mucosa in patients with HNSCC.
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Affiliation(s)
- Sébastien Van der Vorst
- Center for Applied Molecular Technologies, Institute for Experimental and Clinical Research, Université Catholique de Louvain, Brussels, Belgium
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16
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Golusinski P, Lamperska K, Pazdrowski J, Golusinski W. [Analysis of mutations within the TP53 gene in patients with squamous cell carcinoma of the head and neck]. Otolaryngol Pol 2011; 65:114-21. [PMID: 21735667 DOI: 10.1016/s0030-6657(11)70640-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Head and neck cancer is the sixth most common type of cancer. Tobacco and alcohol consumption are implicated in 75% of all SCCHN and have a multiplicative combined effect. It is considered to be the main risk factor for the cancer development. The identification of a number of these genetic alterations, for example mutations in the p53 tumour suppressor gene, paved the way for their use as molecular markers. Mutations in the TP53 gene frequently occur in many cancers and are present in 50-60% of head and neck cancers, p53 plays a sentinel role in the pathways that prevent development of cancer by inducing apoptosis, DNA repair and cell cycle arrest in response to different types of cellular stress The aim of the study, was the assessment of the TP53 mutations prevalence in the head and neck cancer patients and it's relation with the clinical data and course of the disease. The material comprised of peripheral blood and tumour tissue obtained from 50 HNSCC patients with a primary tumour in the oral cavity, oropharynx or larynx, who were scheduled for surgical treatment. The mutations in TP53, were detected with use of PCR-SSCP technique. In total 8 patients (16%), showed TP53 mutation in primary tumour. The significant correlation between tobacco and alcohol consumption and the mutation incidence has been observed. The site of the tumour and histopathological grading were also related to the prevalence of mutations, however without reaching the level of statistical significance. There was no correlation between mutations and the T and N stage of the disease.
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Affiliation(s)
- Paweł Golusinski
- Oddział Chirurgii Głowy i Szyi i Onkologii Laryngologicznej, Wielkopolskie Centrum Onkologii, Poznań.
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Lill C, Schneider S, Pammer J, Loewe R, Gedlicka W, Houben R, Heiduschka G, Brunner M, Thurnher D. Significant correlation of peptidyl-prolyl isomerase overexpression in merkel cell carcinoma with overall survival of patients. Head Neck 2010; 33:1294-300. [DOI: 10.1002/hed.21596] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2010] [Revised: 07/09/2010] [Accepted: 07/29/2010] [Indexed: 11/10/2022] Open
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Thode C, Bilde A, Von Buchwald C, Dabelsteen E. TP53 mutations in clinically normal mucosa adjacent to oral carcinomas. J Oral Pathol Med 2010; 39:662-6. [DOI: 10.1111/j.1600-0714.2010.00916.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Popović B, Jekić B, Novaković I, Luković L, Konstantinović V, Babić M, Milasin J. Cancer genes alterations and HPV infection in oral squamous cell carcinoma. Int J Oral Maxillofac Surg 2010; 39:909-15. [PMID: 20579853 DOI: 10.1016/j.ijom.2010.05.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2009] [Revised: 10/02/2009] [Accepted: 05/19/2010] [Indexed: 11/26/2022]
Abstract
The aim of this study was to gain a better understanding of cancer genes contributing to oral squamous cell (OSCC) development and progression and correlate genetic changes to clinical parameters. Human papilloma virus (HPV) 16 detection is also included in the study. 60 samples of OSCC were analysed for c-erbB2 and c-myc amplification by dPCR, H-ras and p53 point mutations by PCR/SSCP. HPV was detected via amplification of its E1 and E6 genes. c-erbB2 was altered in 45%, c-myc in 35%, H-ras in 22% and p53 in 60% of samples. HPV was detected in 10% of cases. The frequency of p53 gene mutations showed a statistically significant association with tumour stage. Patients with c-erbB2 and H-ras alterations had lower survival than patients without these alterations. The number of detected genetic changes was remarkable but statistical association with tumour natural history was poor, indicating high clonal heterogeneity and multiple pathways of carcinogenesis.
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Affiliation(s)
- Branka Popović
- Institute of Human Genetics, School of Dentistry, University of Belgrade, Belgrade, Serbia.
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20
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Ogmundsdóttir HM, Björnsson J, Holbrook WP. Role of TP53 in the progression of pre-malignant and malignant oral mucosal lesions. A follow-up study of 144 patients. J Oral Pathol Med 2010; 38:565-71. [PMID: 19473450 DOI: 10.1111/j.1600-0714.2009.00766.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
BACKGROUND Prediction of progression from pre-malignant oral mucosal lesions to malignancy, or recurrence of an existing oral squamous cell carcinoma (OSCC), is an important clinical problem in oral medicine. METHODS This study presents a follow-up of a study published in 2002. Samples from 54 patients with OSCC, 45 with oral lichen planus (OLP) and 45 with hyperkeratosis (clinically leukoplakia), diagnosed between 1987 and 1996, were analysed for TP53 protein expression and TP53 mutation. Follow-up was 11-17 years for OSCC (mean 13.3), 12-22 years for OLP (mean 15.9) and 12-17 years for hyperkeratosis (mean 14.5). RESULTS Of the 54 OSCC patients, 28 experienced recurrent disease, 21 died of OSCC, 22 died of other causes. Of the 14 OSCC patients with mutated TP53 (n = 11), the cancer recurred in eight (57%) and in 20/39 (51%) without mutation. Expression of TP53 protein was significantly associated with reduced overall survival. Among OLP patients, nine were TP53-mutated out of 31 tested. One TP53-mutated OLP patient developed OSCC in a different site. Of the hyperkeratosis patients, three were mutated of 22 tested. One hyperkeratosis patient (non-mutated) developed OSCC in the same site. CONCLUSION TP53 mutations can exist in benign oral mucosal lesions for many years without progression to malignancy. No association was found between TP53 protein expression or TP53 mutation and recurrence of OSCC or disease-related survival. Overall survival was reduced in patients with positive TP53 protein expression.
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Affiliation(s)
- H M Ogmundsdóttir
- Faculty of Medicine, University of Iceland, Vatnsmyrarvegur 16, 101 Reykjavik, Iceland.
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21
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Mroz EA, Rocco JW. Functional p53 status as a biomarker for chemotherapy response in oral-cavity cancer. J Clin Oncol 2010; 28:715-7. [PMID: 20048171 DOI: 10.1200/jco.2009.26.3475] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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22
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Gomes CC, Diniz MG, Gomez RS. Review of the molecular pathogenesis of the odontogenic keratocyst. Oral Oncol 2009; 45:1011-4. [PMID: 19796981 DOI: 10.1016/j.oraloncology.2009.08.003] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2009] [Revised: 08/01/2009] [Accepted: 08/17/2009] [Indexed: 11/25/2022]
Abstract
The odontogenic keratocyst (keratocystic odontogenic tumour) (OKC) is one of the most prevalent odontogenic tumours. Since its initial description, a number of studies have focused on different aspects of this lesion, attempting to explain its distinctive biological behaviour. In this review the authors address the main genetic and epigenetic alterations reported on this tumour. Although most of the knowledge on this field is not being used in the clinical practice, some perspectives of translational studies are discussed.
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Affiliation(s)
- Carolina Cavaliéri Gomes
- Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
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Acha-Sagredo A, Ruesga MT, Rodriguez C, Aguirregaviria JI, Pancorbo MMD, Califano JA, Aguirre JM. p53 mutation is rare in oral mucosa brushings from patients previously treated for a head and neck squamous cell carcinoma. Oral Oncol 2009; 45:661-4. [DOI: 10.1016/j.oraloncology.2008.10.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2008] [Revised: 10/03/2008] [Accepted: 10/06/2008] [Indexed: 11/26/2022]
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Pifithrin-alpha decreases the radioprotective efficacy of a Podophyllum hexandrum Himalayan mayapple fraction REC-2006 in HepG2 cells. Biotechnol Appl Biochem 2009; 54:53-64. [PMID: 19409072 DOI: 10.1042/ba20080250] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Inhibition of the tumour suppressor p53 by PFT (pifithrin-alpha) promotes p53-mediated apoptosis and protects against doxorubicin-induced apoptosis. The present study was carried out to evaluate the effect of PFT on the radioprotective potential of Podophyllum hexandrum fraction (REC-2006) in HepG2 (p53++) cell line. REC-2006 (10-5 microg/ml) treatment at 2 h before irradiation (10 Gy) rendered 80+/-3% protection in HepG2 cells, whereas PFT debilitated the radioprotective potential of REC-2006. REC-2006 increased the expression of Hsp70 (heat-shock protein 70), HSF1 (heat-shock factor 1) and Bcl-2 in irradiated HepG2 cells, whereas PFT when treated with REC-2006 decreased the expression of Hsp70, HSF1 and Bcl-2 in HepG2 cells. REC-2006 facilitated post-irradiation DNA repair by pausing cell-cycle progression at G1- and G2-phase, whereas no such cell-cycle arrest was observed in irradiated HepG2 cells pretreated with PFT in irradiated HepG2 cells. No change was observed in Mdm2 (murine double minute 2) and Ras-GAP (Ras-GTPase-activating protein) expression with or without PFT treatment. Decrease in the expression of caspase 3 and Bax was observed in HepG2 cells when REC-2006 treatment was given 2 h before irradiation; however, PFT treatment increased the expression of Bax leading to apoptosis. It can be concluded that p53 expression plays a major role in the REC-2006-mediated protection against acute irradiation in HepG2 cells. PFT treatment reduced the radioprotective efficacy of REC-2006 by inhibiting the expression of HSF1 and Hsp70 and thereby the expression of Bcl-2, by up-regulating the cell-cycle-regulatory proteins and therefore reducing the span of time for DNA repair and also by inducing Bax-mediated apoptosis. PFT did not, however, show any effect on p53 regulating protein (Mdm2) and pro-survival protein (Ras-GAP).
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Incorporation of Molecularly Targeted Agents in the Primary Treatment of Squamous Cell Carcinomas of the Head and Neck. Hematol Oncol Clin North Am 2008; 22:1193-208, ix. [DOI: 10.1016/j.hoc.2008.08.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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