Background Screening for breast cancer and cervical cancer in the newly independent states of the former Soviet Union is largely opportunistic, and countries in the region have among the highest cervical cancer incidence in the WHO European Region. We aimed to compare the stage-specific distributions and changes over time in breast cancer and cervical cancer incidence in the newly independent states of the former Soviet Union.Methods We collected breast cancer and cervical cancer incidence data from official statistics from Armenia,
The aim: The aim of our study was to define the factors that can robustly predict a response to neoadjuvant chemoradiotherapy (NCRT) in patients with local advanced rectal
cancer (LARC) and prognosis factors of progression free survival (PFS) using molecular (8-oxodGu), immunohystochemical (Ki-67) and genetic (GSTP1 and MTHFR genes
polymorphism) markers.
Materials and methods: GSTP1 and MTHFR polymorphisms were studied by real-time PCR on tumour material from 110 patients with LARC. Ki-67 protein expression was assessed
using rabbit monoclonal antibodies to Ki-67 (Dako, Denmark) on EnVisionTM FLEX detection system (Dako, Denmark). 8-oxodGu level in eluate was measured by spectrophotometry.
Results: Patients from both groups showed significant pathomorphological response to NCRT. It is robust correlation between 8-oxodGu levels in patients’ blood and their
response to CRT (mrTRG scale) in MG was determined. Oxaliplatin-containing chemotherapy promotes statistically significant decrease of 8-oxodGu levels. With the decrease
of Ki-67 protein expression level the probability of tumour relapse increases. It is determined that critical value of Ki-67 protein expression level makes less than 27 and tumour
relapse probability in this case makes 50%. Tumour relapse risk in patients with GSTP1 and MTHFR polymorphism is 12.3 and 16.3 times higher than in patients who do not
carry such polymorphism, respectively. Combination of GSTP1, МTНFR polymorphisms and Кі-67 protein expression factors determines prognostic probability of tumour relapse
within 51-99%.
Conclusions: 8-oxodGu level can serve as independent prognostic factor of NCRT efficacy in patients with LARC. Combination of GSTP1, МTНFR genes polymorphism with Кі-67
protein expression decrease enables monitoring and robust prognosis of LARC relapse.
AIMTo investigate rates of distant metastases (DM) detected with [18]fluorodeoxyglucose-positron emission tomography/computed tomography (18FDG-PET/CT) in early stage invasive breast cancer.METHODSWe searched the English language literature databases of PubMed, EMBASE, ISI Web of Knowledge, Web of Science and Google Scholar, for publications on DM detected in patients who had 18FDG-PET/CT scans as part of the staging for early stages of breast cancer (stage I and II), prior to or immediately following surgery. Reports published between 2011 and 2017 were considered. The systematic review was conducted according to the PRISMA guidelines.RESULTSAmong the 18 total studies included in the analysis, the risk of DM ranged from 0% to 8.3% and 0% to 12.9% for stage I and II invasive breast cancer, respectively. Among the patients with clinical stage II, the rate of occult metastases diagnosed by 18FDG-PET/CT was 7.2% (range, 0%-19.6%) for stage IIA and 15.8% (range, 0%-40.8%) for stage IIB. In young patients (< 40-year-old), 18FDG-PET/CT demonstrated a higher prevalence of DM at the time of diagnosis for those with aggressive histology (i.e., triple-negative receptors and poorly differentiated grade).CONCLUSIONYoung patients with poorly differentiated tumors and stage IIB triple-negative breast cancer may benefit from 18FDG-PET/CT at initial staging to detect occult DM prior to surgery.
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