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Clinical Trial Summary

A experimental interventional prospective study will include patients with squamocellular carcinoma of the larynx surgically treated at the tertiary referral center. Clinical and demographic characteristics of the patients would be noted. The visual analog scale (VAS), Brief Pain Inventory questionnaire, Diagnosing Neuropathic Pain 4 (DN4) and Pain Detect Questionnaire were used for pain assessment. Questionnaire Quality of Life in Head and Neck Cancer Patients (QLQ - H&N35) was used to assess the quality of life in patients with surgically treated laryngeal carcinoma. The type and consumption of analgesics used after surgery was monitored. The analgesics were used according to WHO Ladder. Blood samples ware taken from the patients for the analysis of oxidative stress parameters and inflammation parameters before the operative treatment and after the operative treatment (1-2 postoperative day and 9-10 postoperative day). The concentrations of interleukin 1 (IL-1) and 6 (IL-6), glutathione peroxidase 1 (GPX1), superoxide dismutase 1 (SOD1) and malondialdehyde (MDA) in the serum were determined. The aim of the study will be to assess concentrations of inflammatory biomarkers (IL-1, IL-6) and oxidative stress factors (MDA, SOD, GPKS1) in postoperative course in surgically treated patients with laryngeal carcinoma and in possible complication occurrence. Also, their correlation to type and dosage of used analgesics, to pain assessment questionnaire scores and QOL questionnaire scores in surgically treated patients with laryngeal carcinoma will be assessed.


Clinical Trial Description

Patient selection A experimental interventional prospective study would include 100 patients with squamocellular carcinoma of the larynx surgically treated in the period from October 2022 to February 2023 at the tertiary referral center. This study was approved by the Institutional Ethics Committee (745/5-22), and all patients signed the informed consent form prior to their inclusion in the study. The diagnosis of laryngeal carcinoma was confirmed by otorhinolaryngological clinical examination and laryngomicroscopic examination of the larynx with the biopsy and histopathologic examination of the tissue. Additional diagnostics (chest radiography and computed tomography of the neck and ultrasonography of the abdomen) were performed to determine the TNM stage of the disease. Study included patients with all stages of operable laryngeal carcinoma (T1-T4, N0-N2), without previous treated malignancies. Exclusion criteria were inoperable malignant disease, presence of distant metastases, previously treated malignancies, presence of neurological or other severe comorbidities which prevent surgical treatment, the presence of neurological or other severe physical and metabolic comorbidities, substance abuse, and the inability to provide informed consent. The modality of treatment for every patient was decided on the institutional Oncological Board (consisting of a radiotherapist, head and neck surgeons, an oncologist, and a histopathologist). Open surgical treatment involved resection of the tumor (cordectomy, partial or total laryngectomy) with or without some form of the neck dissection in case of cervical lymphadenopathy. Demographic, clinical and histopathological characteristics (age and gender, tobacco use, histopathological tumor grade, TNM classification, and therapy modality) were noted. Quality of life assessment Questionnaire Quality of Life in Head and Neck Cancer Patients (QLQ - H&N35) was used to assess the quality of life in patients with surgically treated laryngeal carcinoma. Pain assessment The visual analog scale (VAS) was used for pain assessment. Scores were based on self-reported measures of pain severety that are recorded with a mark placed at one point along the length of a 10-cm line that represents a continuum between the two ends of the scale (0 cm on the left end of the scale marks ''no pain'' and 10 cm on the right end of the scale marks ''the worst pain''). Brief Pain Inventory questionnaire, Diagnosing Neuropathic Pain 4 (DN4) and Pain Detect Questionnaire were used for quality assessment of postoperative pain Postoperative analgesia The type and consumption of analgesics used after surgery was monitored. The analgesics were used according to WHO Ladder: (1) for mild to moderate pain, a non-opioid (acetaminophen or non-steroid anti-inflammatory drug , NSAID) with or without an adjuvant; (2) for moderate or severe pain, a non-opioid with an opioid for moderate pain and (3) an opioid for moderate to severe pain not combined with another agent. Measurement of the Oxidative Stress and Inflammatory Parameters Blood was taken from the patients for the analysis of oxidative stress parameters and inflammation parameters before the operative treatment and after the operative treatment (1-2 postoperative day and 9-10 postoperative day). The concentrations of interleukin 1 (IL-1) and 6 (IL-6), glutathione peroxidase 1 (GPX1), superoxide dismutase 1 (SOD1) and malondialdehyde (MDA) in the serum were determined by coated enzyme-linked immunosorbent assay (ELISA) kits, according to the manufacturer's instructions (Elabscience, Wuhan, China). The ELISA kits for determination of concentrations of IL-1 and IL-6 were based on the Sandwich ELISA principle, with plates pre-coated with an antibody specific to human cytokines. The optical density (OD) was measured spectrophotometrically at 450 nm, using a Multiskan EX plate reader (Thermo Fisher Scientific, Vantaa, Finland). The concentration of analytesin of the tested samples was calculated by comparing the OD of the samples to the standard curve created with GraphPad Prism 9.0 software (GraphPad Software Inc., San Diego, CA, USA). Statistical analysis Categorical data was described by absolute and relative numbers (in percentages), while numerical data was reported as arithmetic mean and standard deviation or median and interquartile range (IQR), depending on the data distribution. The normality was evaluated using mathematical (Shapiro-Willk, skewness and kurtosis, and coefficient of variation) and graphical (histogram, box plot) methods. For the evaluation of changing of pain intensity, parameters of oxidative stress, and biomarkers of inflammation Friedman test was applied with Wilcoxon signed rank test as post-hoc testing method. For analyzing the association between pain intensity (VAS), parameters of oxidative stress, and biomarkers of inflammation Spearman's rank correlation coefficient was used, because variables didn't have normal distribution. In order to evaluate all possible factors that influence the level of oxidative stress expressed as SOD and MDA levels, linear regression analysis (enter method) was performed reporting regression coefficient B, 95% confidence level (CI) of B, and p value. Univariate analysis was done first, and all significant factors were combined in multivariate models. All statistical methods were considered significant if p value was less or equal 0.05. The analysis was performed in IBM SPSS ver. 26. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT05857202
Study type Observational
Source Clinical Centre of Serbia
Contact Ana D Jotic, MD, PHD
Phone +381 63 7789825
Email anajotic@yahoo.com
Status Recruiting
Phase
Start date September 1, 2022
Completion date October 30, 2023

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