scholarly journals Prognostic and Predictive Impact of Ki-67 in Premalignant and Malignant Squamous Cell Lesions of Oral Cavity

2013 ◽  
Vol 4 (2) ◽  
pp. 61-65 ◽  
Author(s):  
SC Sharma ◽  
Veena Maheshwari ◽  
Varsha Narula ◽  
Sachin Verma ◽  
Anshu Jain ◽  
...  
Keyword(s):  
Squamous Cell Carcinoma ◽  
Oral Cavity ◽  
Cell Carcinoma ◽  
Squamous Cell ◽  
Premalignant Lesions ◽  
Oral Lesions ◽  
Older Individuals ◽  
Ki 67 ◽  
Long Time ◽  
Clinicopathological Profile

ABSTRACT Introduction Oral squamous cell carcinoma, the fifth most common cancer worldwide, is a major cause of morbidity and mortality in India. It most commonly occurs in middle-aged and older individuals. Typically, they tend to be preceded by a premalignant state for a long time. The present study evaluates the clinicopathological profile of patients with oral lesions and the role of malpractices that promote carcinogenesis in the oral mucosa and the use of Ki-67 as an important predictor of the same. Materials and methods The expression of Ki-67 was studied in paraffin-embedded tissue sections of oral lesions of all the cases after taking a detailed history and examination. Results The study was conducted on 65 patients with 25 dysplastic and 40 malignant lesions. Males were affected more frequently than females. The most common age group affected was 31 to 60 years with mean age of 45.4 years. Anterior twothird of tongue (41%) was the most commonly affected site. 95% of the patients had a history of addiction in form of smoking, tobacco chewing and betel nut. Out of 25 cases of dysplasia, 11 showed low expression while out of 40 cases of squamous cell carcinoma only three showed low and 29 showed high expression of Ki-67. Conclusion The expression of Ki-67 correlates well with the disease progression from dysplasia to carcinoma of the oral cavity. It is therefore a marker of malignant transformation and carcinogenesis in oral premalignant lesions and in future it may serve as a prognostic tool in the early detection of malignancy. How to cite this article Maheshwari V, Sharma SC, Narula V, Verma S, Jain A, Alam K. Prognostic and Predictive Impact of Ki-67 in Premalignant and Malignant Squamous Cell Lesions of Oral Cavity. Int J Head Neck Surg 2013;4(2):61-65.

Expression of cyclin D1 and Ki-67 in squamous cell carcinoma of the oral cavity: clinicopathological and prognostic significance

Oral Oncology ◽  
2002 ◽  
Vol 38 (3) ◽  
pp. 301-308 ◽  
Author(s):  
Juan Carlos de Vicente ◽  
Agustı́n Herrero-Zapatero ◽  
Manuel Florentino Fresno ◽  
Juan Sebastián López-Arranz
Keyword(s):  
Squamous Cell Carcinoma ◽  
Oral Cavity ◽  
Cell Carcinoma ◽  
Cyclin D1 ◽  
Squamous Cell ◽  
Prognostic Significance ◽  
Ki 67

scholarly journals A study of Ki 67, p53 and their combination as immunomarkers in squamous cell carcinoma of oral cavity

2020 ◽  
Vol 5 (2) ◽  
pp. 179-186
Author(s):  
Sumit Gupta ◽  
◽  
Suman Lata Khatri ◽  
Deepak ◽  
Jyostana Khatri ◽  
...  
Keyword(s):  
Squamous Cell Carcinoma ◽  
Oral Cavity ◽  
Cell Carcinoma ◽  
Squamous Cell ◽  
Ki 67

Oral premalignant lesions induce immune reactivity to both premalignant oral lesions and head and neck squamous cell carcinoma

2006 ◽  
Vol 56 (7) ◽  
pp. 1077-1086 ◽  
Author(s):  
M. Rita I. Young ◽  
Brad W. Neville ◽  
Angela C. Chi ◽  
Deane M. R. Lathers ◽  
M. Boyd Gillespie ◽  
...  
Keyword(s):  
Squamous Cell Carcinoma ◽  
Cell Carcinoma ◽  
Head And Neck ◽  
Squamous Cell ◽  
Neck Squamous Cell Carcinoma ◽  
Premalignant Lesions ◽  
Immune Reactivity ◽  
Oral Lesions

scholarly journals Expression OF p16INK4a Gene in Premalignant and Malignant Lesions of Oral Cavity

2021 ◽  
pp. 53-62
Author(s):  
R. Vijay David Raj ◽  
S. Marylilly
Keyword(s):  
Risk Factors ◽  
Squamous Cell Carcinoma ◽  
Oral Cavity ◽  
Cell Carcinoma ◽  
Squamous Cell ◽  
Malignant Lesion ◽  
Malignant Neoplasm ◽  
Premalignant Lesions ◽  
Group I ◽  
Malignant Lesions

Squamous cell carcinoma is the summits malignant neoplasm of the oral cavity. Tobacco and alcohol is identified as risk factors, but squamous cell carcinoma can occur in patients with no known risk factors. Oral cancer is the sixth most common malignancy and is one of the major causes of cancer morbidity and mortality worldwide. Cancer is caused due to a series of alteration in genetic and epigenetic factors that occur in multiple steps and is influenced by the genetic predisposition of the individual and by exogenous environmental factors. These factors result in a series of molecular alteration, including inactivation of tumor suppressor genes expression of p16 has been proposed as a marker for malignant transformation. The p16 staining was correlated between the control and study groups and p 16 was shown to be increasing expressed in premalignant and less expressed in malignant category and was found to be statistically significant by Fischer’s exact test. This study concluded that p16 was increasingly expressed in premalignant lesions and less expressed in malignant lesion. In the present study 9 of the control cases were p16 negative and one case showed sporadic staining. The study group I showed 1 case of sporadic staining, 6 cases of focal staining and 8 cases of diffuse staining. The study II showed 14 cases of sporadic staining, 6 cases of focal staining and 5 cases of diffuse staining. Hence variations cannot be accurately assessed, but it plays a crucial role in assessing pre-malignant lesions progressing to malignancy. To confirm this, a larger sample study is required. As advances in research have leads to greater understanding of potentially malignant lesions in the oral cavity.

scholarly journals Role of p53 and Ki-67 immunomarkers in oral premalignant lesions and squamous cell carcinoma: a hospital based study in BPKIHS

2018 ◽  
Vol 8 (2) ◽  
pp. 1330-1336 ◽  
Author(s):  
Mona Dahal ◽  
Smriti Karki ◽  
Paricha Upadhyaya ◽  
Shyam Thapa Chettri ◽  
Mehul Rajesh Jaisani
Keyword(s):  
Squamous Cell Carcinoma ◽  
Oral Squamous Cell Carcinoma ◽  
Cell Carcinoma ◽  
Malignant Transformation ◽  
Squamous Cell ◽  
Labelling Index ◽  
Premalignant Lesion ◽  
Premalignant Lesions ◽  
Ki 67

Background: As most of the oral squamous cell carcinoma develop from precursor premalignant lesions, it would be helpful if the malignant transformation is detected early in premalignant state. The objective of the research was to study the role of immunohistochemical expression of p53 and Ki-67 in oral premalignant lesion and squamous cell carcinoma.Materials and Methods: The expression of immunomarkers p53 and Ki67 were studied on formalin fixed paraffin embedded tissue sections from human oral squamous mucosal lesion for duration of 1 year. Results: Of total 36 cases, 80% cases of keratosis without dysplasia showed basal pattern of p53 staining while 47.1% cases of squamous cell carcinoma showed p53 staining in all layers of epithelium. The median p53 Labelling Index of squamous cell carcinoma was more than those of keratosis with and without dysplasia though the result was statistically non-significant. 50.0% cases of keratosis without dysplasia and 83.3% cases of keratosis with dysplasia displayed Ki-67 immunostaining confined to basal and suprabasal layer whereas 94.1% cases of squamous cell carcinoma showed Ki-67 positivity in all layers of epithelium. Median Ki-67 Labelling Index increased from keratosis without dysplasia to keratosis with dysplasia to squamous cell carcinoma, difference being statistically significant. A positive and insignificant correlation was observed between p53 and Ki-67 Labelling Index.Conclusion: Increased expressions of Ki-67 and p53 in oral squamous cell carcinoma compared to premalignant lesion suggest that they may be useful indicator of malignant transformation in dysplastic lesion.

scholarly journals Histological correlation of Ki-67 and D1 cycline markers expression in squamous cell carcinoma in the oral cavity

2016 ◽  
Vol 20 (4) ◽  
pp. e225-e229
Author(s):  
Edward Acero-Mondragón ◽  
Rebeca Rodríguez-Farías ◽  
Martha Salazar-Hernández ◽  
Jenniffer Figueroa-Avendaño
Keyword(s):  
Squamous Cell Carcinoma ◽  
Oral Cavity ◽  
Cell Carcinoma ◽  
Squamous Cell ◽  
Ki 67

CLINICOPATHOLOGICAL STUDY OF ORAL LESIONS IN A TERTIARY CARE HOSPITAL

2021 ◽  
pp. 17-20
Author(s):  
Sravani Ponnada ◽  
Lakshmi Latchupatula ◽  
Tadikonda Krishna Srivathsav ◽  
Bhagyalakshmi Atla
Keyword(s):  
Risk Factors ◽  
Squamous Cell Carcinoma ◽  
Oral Cavity ◽  
Cell Carcinoma ◽  
Squamous Cell ◽  
Oral Lesion ◽  
Oral Lesions ◽  
Care Hospital ◽  
Common Site ◽  
Female Ratio

Background: Oral cavity is a common site for various non-neoplastic and neoplastic lesions. Majority of lesions were neoplastic. Tobacco chewing, smoking and alcohol consumption were the common risk factors implicated in the etiology of malignant oral lesions. Squamous cell carcinoma was the most common lesion of the oral cavity. Aims&Objectives: To study the clinicopathological lesions of the oral cavity with respect to age, gender, location, clinical presentation, histopathological patterns and various risk factors. Materials And Methods: A retrospective study of 274 oral cavity lesions conducted for period of 2 years from January 2019 to December 2020 in the department of pathology, Andhra Medical College, Visakhapatnam, Andhra Pradesh. Results: In our study, the age range of the patients was from 3 years to 87 years. Majority of cases were seen in age group of 41- 50 years. Males were more commonly affected than females with a male to female ratio of 2.51:1. Majority of oral lesions were malignant. Squamous cell carcinoma was the most common oral lesion. Tongue was the most common site involved in oral lesions. Mucocele was the commonest non-neoplastic lesion and squamous papilloma was the most common benign lesion. Leucoplakia was the most common premalignant lesion and Squamous cell carcinoma was the commonest malignant lesion. Conclusion: Majority of oral lesions were malignant. Squamous cell carcinoma was the most common oral lesion. Early and accurate identication of potentially malignant oral lesions is important and essential for prevention of morbidity, mortality and for proper treatment of cases. Along with clinical examination and laboratory investigations, histopathological examination is still the gold standard to establish a denitive diagnosis and for conrmation of the nature and origin of oral lesions.

Detection of somatic mutations in saliva of patients with oral cavity squamous cell carcinoma.

2020 ◽  
Vol 38 (15_suppl) ◽  
pp. 6562-6562 ◽  
Author(s):  
Evgeny Izumchenko ◽  
Rifat Hasina ◽  
Arun K Hariharan ◽  
Ashwini Shanmugam ◽  
Sivaraj Irusappan ◽  
...  
Keyword(s):  
Squamous Cell Carcinoma ◽  
Early Diagnosis ◽  
Oral Cavity ◽  
Cell Carcinoma ◽  
Squamous Cell ◽  
Somatic Mutations ◽  
Genetic Alterations ◽  
Premalignant Lesions ◽  
Early Stage Disease ◽  
Primary Tumors

6562 Background: Oral cavity squamous cell carcinoma (OCSCC) frequently presents as clinically advanced disease with poor prognosis. When diagnosed at early stages, survival rates approach 80%, underscoring the need for validated, cost-effective detection methods. OCSCC is driven by the serial acquisition of genetic alterations. Tumor-defining somatic mutations are attractive biomarkers and hence their presence in saliva may be associated with malignancy as shown in a few proof-of-concept studies, including our previous work. Based on this premise, we present a low-cost, accurate, next generation sequencing (NGS) test with high clinical utility aimed at detecting mutations in the saliva for early diagnosis and potential screening of OCSCC. Methods: We have designed a custom NGS panel that covers exons of 7 most frequently mutated genes in OSCC. This minimal gene set derived from the analysis from 3 public datasets, predicted incidence of at least one somatic aberration in 89% of patients. We recruited 91 treatment-naïve OCSCC patients and profiled DNA from tissue and matched pre-operative saliva using this test. We also tested DNA from 12 subjects with premalignant lesions with high-grade oral dysplasia and matched saliva. Results: Using stringent variant calling criteria, at least one somatic variant was detected in 88 (96%) of the 91 primary tumors. 90.9% of the matched saliva were concordant, with only a minor decrease in early stage disease. Tumor-specific mutations (≥5% AF) in driver genes were detected in 10 (83.3%) dysplastic lesions, suggesting that driving clonal events may occur early in disease development. Interestingly, in 3 matched saliva of the dysplastic samples, the same mutations were detected. To ensure a variant is not a false positive call, we performed a vigorous multistep analytical validation of this saliva-based test: (i) independent re-sequencing of 24 saliva confirmed 94% reproducibility; (ii) no functionally relevant variants were detected in saliva from 12 of 13 healthy subjects without history of tobacco and alcohol usage; (iii) reproducibility, sensitivity, and specificity were confirmed using a positive control with 7 loci at 0.25% AF across 8 independent saliva sequencing runs and a certified negative control and was found to be on par with droplet digital PCR. Conclusions: These data highlight the feasibility of saliva-based testing for early diagnosis of OCSCC and premalignant lesions.

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