Academic literature on the topic 'Masaryk Memorial Cancer Institute in Brno'

e11072 Background: Lapatinib is an oral dual tyrosin kinase inhibitor of EGFR and HER2 and compared to trastuzumab penetrates to CNS. We evaluated efficacy and safety of lapatinib treatment according to different metastatic sites involvement using data from IntERB registry that has been initiated and run by Czech Society for Oncology and Institute of Biostatistics and Analyses at Masaryk University, Brno, Czech Republic. Methods: An analysis included 213 patients with HER2 positive metastatic breast cancer treated from January 2007 to September 2011. Lapatinib was mostly administered orally 1250mg/day with capecitabine (2000mg/m2 D1-14), 16 patients received lapatinib in monotherapy. All patients had experienced progression during prior trastuzumab based therapy. Results: Median age was 56 years (range 23 – 78). Median duration of lapatinib therapy was 20.6 weeks (range 1–146). Complete response was achieved in 13 patients (6.1%), partial response in 31 (14.6%), stable disease in 118 (55.4%). In 26 disease have progressed (12.2%); response could not be assessed in 25 patients (11.7%). PFS for whole group was 7.1 months (95% CI 5.9-8.5). Overall survival was 17.2m (95% CI 15.8-18.6), probability of 6m OS was 80.3% and 1-year OS was 64%. Metastatic sites specific survival was evaluated in 103 patients. CNS dissemination was initially diagnosed in 31 patients (30.1%), PFS in this group was 6.2m (95% CI 3.3-9.1), OS was not reached, 6-m OS was 67.3%. In non-CNS group (skeletal metastasis in 49.5%, lung 38.8%, hepatic 36.9%, lymphatic 17.5%, other 15.5%) was PFS 6.3m (95% CI 1.6-11.1), OS 22.0m (95% CI 15.3-28.8) and 6-m OS was 88.2%. Most common toxicities were diarrhea in 11.7% patients, rash/skin toxicity in 10.8%, nausea/vomitus in 5.2% and hepatotoxicity in 2.3%. No cardiac toxicity was reported. Therapy was discontinued due toxicity in 9.0%. Conclusions: Lapatinib in combination with capecitabine proved its efficacy in trastuzumab pretreated HER2 positive metastatic breast cancer. Even in patients with CNS involvement was achieved a notable PFS and OS, comparable to non-CNS group of patients. Therapy was well tolerated.

IntroductionAll colorectal cancer (CRC) survivors have an increased risk of developing second primary malignancies (SPMs). The association between diabetes mellitus (DM) and the risk of cancer is well known. However, the role of DM and its therapy in the development of SPMs in CRC patients is not well described.MethodsIn this single-institutional retrospective analysis we identified 1,174 colorectal carcinoma patients, median follow-up 10.1 years, (median age 63 years, 724 men). All patients over 18 years with histologically confirmed CRC who were admitted in the period 1.1. 2003- 31.12.2013 and followed-up till 31.12. 2018 at the Masaryk Memorial Cancer Institute (MMCI) were screened for eligibility. The exclusion criteria were CRC diagnosed at autopsy, lost to follow-up and high risk of development of SPMs due to hereditary cancer syndrome. Tumours are considered multiple primary malignancies if arising in different sites and/or are of a different histology or morphology group. Comparisons of the basic characteristics between the patients with SPM and the patients without SPM were performed as well as comparison of the occurrence of SPMs by the site of diagnosis between the DM and non-DM cohorts and survival analyses.ResultsA SPM was diagnosed in 234 (20%) patients, DM in 183 (15%) patients. DM was diagnosed in 22.6% of those with SPM vs. in 13.8% of those without SPM (p=0.001). The most common types of SPMs in DM patients were other CRC, kidney, lung, bladder and nonmelanoma skin cancer, but only carcinoma of the liver and bile duct tracts was significantly more common than in the group without DM. Although breast cancer was the second most common in the group with DM, its incidence was lower than in the group without DM, as well as prostate cancer. A significantly higher incidence of SPMs was found in older CRC patients (≥ 65 years) and in those with lower stage colon cancer and DM. No significant difference in DM treatment between those with and without a SPM was observed including analysis of type of insulin.ConclusionCRC patients with diabetes mellitus, especially those with older age, and early stages of colon cancer, should be screened for second primary malignancies more often than the standard population. Patients without DM have longer survival. According to the occurrence of the most common second malignancies, a clinical examination, blood count, and ultrasound of the abdomen is appropriate, together with standard breast and colorectal cancer screening, and lung cancer screening under certain conditions, and should be recommended in CRC survivors especially in patients with intercurrent DM, however the necessary frequency of screening remains unclear.

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