Incidence and risk factors associated with development of oxalipatin-induced acute peripheral neuropathy in colorectal cancer patients.

INTRODUCTION: Oxaliplatin utilized in colorectal neoplasms treatment could induce acute peripheral neuropathy (APN) which is a dreadful and frequent adverse event. The objective of this study is to estimate incidence of APN induced by oxaliplatin cumulative incidence in cancer patients colorectal and to describe the distribution of the APN incidence according to demographic and clinical characteristics, as well as according to oxaliplatin cumulative dose. MATERIAL AND METHODS: This is a prospective descriptive study which took place from June to December 2018 at the Salah Azaiz Institute, Tunis. Demographic data, clinical data and data on oxaliplatin administration were collected from patient interview, medical files and pharmaceutical databases. RESULTS: The APN (grade 1, grade 2 and grade 3) cumulative incidence during the period of six months of follow up was 86% (95% CI [0.7815-0.9132]). While 38.3% (95% CI [0.29-0.48]) of the patients had grade 2 or 3 neuropathy. The search for factors associated with the risk of grade 2 and 3 NAP revealed trend significant association with diabetes (adjusted RR = 5.7 (IC95% [0.9- 37.3]; p = 0.07). Moreover, there was significant association with oxaliplatin cumulative dose (≥421 mg/m2) to increase the risk of APN grade 2 and 3 (adjusted RR = 7.8; [2.7-22.7]; p = 0.0001). Furthermore, significant association with obesity to increase the risk of APN grade 2 and 3 (adjusted RR = 5.3 [1.1- 25.4]; p = 0.04) was found. Among the patients included, 31.1% experienced oxaliplatin dose reduction and in the majority of cases this reduction is due to neurotoxicity (90.9%). CONCLUSION: The high incidence of oxaliplatin-induced APN remains an embarrassing and handicapping side effect. Our study has shown that oxaliplatin cumulative dose (≥421 mg/m2), diabetes and obesity are risk factor for the development of grade 2 and 3 APN.

Prevalence and risk factors of trastuzumab induced cardiotoxicity in Tunisian HER2-positive breast cancer patients.

INTRODUCTION: Cardiotoxicity is the most important side effect of Trastuzumab treatment. The purpose of this study is to evaluate the prevalence of Trastuzumab induced cardiotoxicity and to analyze risk factors associated with this side effect. MATERIALS AND METHODS: A retrospective institutional study was carried out from June 2018 to December 2018 at the department of Medical Oncology of Salah Azaiz institute, Tunis, Tunisia. Demographic, clinical characteristics (menopausal status, breast cancer stage, anthracyclines exposure, comorbidities presence…) and left ventricular ejection function (LVEF) measurements, were collected from patient records. RESULTS: Twenty-three women (20%) had Trastuzumab induced cardiotoxicity.65.2% (N = 15) experienced a decrease in LVEF more than 10% with a decrease below normal value and 34.8% (N = 8) experienced a decrease in LVEF more than 20%. Obesity is a risk factor for the occurrence of Trastuzumab induced cardiotoxicity (adjusted odds ratio (OR) = 2.919 (95% confidence interval (CI) [1.0411-8.186]; p = 0.042). CONCLUSION: Our study highlighted that obesity is associated with a high risk of cardiotoxicity in women treated with Trastuzumab. Therefore, close monitoring of cardiac function is recommended especially for obese women during Trastuzumab administering.

Suggestion of Tunisia's medical oncologist in the management of breast cancer during COVID-19 pandemic.

Cancer patients are at higher risk to be infected with COVID-19 and to develop a more severe form. Breast cancer (BC) treatments, including chemotherapy (CT), targeted therapy and immunotherapy can weaken the immune system and possibly cause lung problems. For all these reasons Salah Azaiez Institute's department of Medical Oncology took drastic actions to protect patients. In this article we will discuss protocol adjustments taken during the COVID-19 pandemic for breast cancer patients.

Toxicity, risk factors and management of cisplatin-induced toxicity: A prospective study.

BACKGROUND AND PROPOSE: Cisplatin is a cytotoxic drug that triggers several toxicities. However, nephrotoxicity and ototoxicity remain major clinical limitations. The aim of our study was to evaluate the incidence of chemotherapy toxicity induced by cisplatin and to analyze the influence of risk factors in the Tunisian population. METHODS: We performed a prospective descriptive study in a period of four months. Patients were eligible if they had pathologically confirmed malignancies and treated with cisplatin-regimen chemotherapy. Nephrotoxicity and digestive toxicity were graded according to the World Health Organization toxicity scale and ototoxicity was scored clinically according to the Common Terminology Criteria for Adverse Events (CTCAE). Multivariate logistic regression analysis was performed to evaluate the influence of clinical variables on cisplatin-induced toxicity. RESULTS: A total of 150 patients were included. Forty-four percent of patients developed cisplatin-regimen toxicity: 15% developed cisplatin-induced nephrotoxicity, 9% cisplatin-induced ototoxicity and 27% digestive toxicity. In the multivariate analysis, age >65 years (OR= 6.129, p = 0.010), metastatic cancer (OR = 0.171, p = 0.007) and cumulative dose (OR= 1.004 mg/m2; p = 0.042) were strong predisposing factors for CDDP-induced nephrotoxicity. The cumulative dose was an independent prognostic indicator for digestive toxicity (OR = 0.997, p = 0.002). CONCLUSION: In our study, age >65 years and metastatic cancer were risk factors for cisplatin-induced nephrotoxicities. We also found the correlation between cumulative dose and nephrotoxicity or digestive toxicity.