We carried out an analysis of the total incidence of colon cancer throughout Kazakhstan. Retrospectively, according to the regional reports on endoscopic screening, the study showed an increase in the age-related incidence of colorectal cancer (CRC) cases from 2004-2008 to 2009-2014. The peak of morbidity in both periods was noted in the age category of >70 years. The indicators of the territorial distribution of CRC incidence make it possible to divide the regions into areas with low or high rates of CRC. Specific indicators showed newly diagnosed cases of CRC stages I, II, III, and IV in 2004-2018. The incidence rates of stages I and II showed a twofold increase (35%-67.4%) and the incidence of stage IV showed a decline from 19.3% to 13.1% and of stage III from 45.7% to 19.5% from 2004 to 2018, respectively. An analysis of CRC incidence throughout Kazakhstan showed an increase in the overall incidence. Since population-based CRC screening was introduced in 2011, the morbidity was found to increase for stages I and II.
Background Real‐world data describing outcomes of treatment among metastatic renal cell carcinoma (mRCC) patients are limited and heterogeneous. Aim RENSUR3 registry study assessed real‐world data on the use of therapies in mRCC and overall survival (OS) in Russia, Kazakhstan, and Belarus. Methods Patients were included in the retrospective multicenter registry study. To be eligible, patients were required to have mRCC diagnosed from January 2015 to January 2016. Anonymized data were collected through an online registry. The outcomes of interest were patient characteristics, treatment patterns, and OS. Results 1094 mRCC patients were identified. Mean age was 62.3 (SD, 11.2) years. Four hundred and forty‐four (41%) patients were 65 years and older. Primary tumor has not been removed in 503 (46%) patients. Subtype of RCC based on WHO classification (clear‐cell or other) has been reported in 402 (37%) patients. In total, 595 (54.4%) patients received systemic therapy for metastatic disease. 58% of elderly patients (≥65) were not treated compared to 37% of younger patients. Cytokines and targeted therapy were used in 298 (50.1%) and 297 (49.9%) of 595 treated patients, respectively. Median OS was 11.9 months (95% CI 10.9‐12.9). The 1‐ and 3‐year OS rates were 49.6% and 19.3%. Conclusions Half of patients received no systemic therapy or had only cytokines for mRCC in Russia, Kazakhstan, and Belarus, which doubtless negatively affected OS in this population. Novel therapies should be considered as life prolonging and a priority.
Relevance: Cancer control is among the key social policy priorities in the Republic of Kazakhstan. 14,000 people die from cancer every year. As a result, our country faces an epidemiologic crisis caused by the increasing malignancy-related incidence and mortality, plus the increasing number of people living with cancer. In 2019, 186 326 patients with malignant neoplasms were under dynamic supervision in Kazakhstan; 52.5% lived for five years or more [1]. WHO prognosis a 1.5-2 times growth of annual malignancy-related incidence and mortality worldwide by 2022. The Republic of Kazakhstan follows the same trend, taking into account the growing welfare and life expectancy of the population and an increase in the detection of malignant neoplasms due to the introduction of early detection programs [2]. The purpose was to assess the implementation in 2019 of the Comprehensive Cancer Control Plan in the Republic of Kazakhstan for 2018-2022. Results: Intermediate Comprehensive Plan implementation results showed the efficacy of the conducted measures as reflected by major cancer care indicators. Thus, the early detection has improved: stage 0-I detection amounted to 27.1% of all new cases (2019 target – 25.2%). This had a positive impact on cancer survival: in 2019, the proportion of 5-year or more survival was 54.7% for breast cancer (2019 target – 54.5%), 56.8% for cervical cancer (2019 target – 55.8%), 46.6% for colorectal cancer (2019 target – 45.8%) [1]. Conclusion: The Comprehensive Cancer Control Plan implementation results evidence cancer care improvement in the Republic of Kazakhstan as of 2019 (increased 5-year survival and decreased mortality). However, a high share of detection of visually accessible malignant neoplasms at generalized and advanced stages should be addressed in the coming years.
BackgroundAlthough there are numerous sources of epidemiologic information on breast cancer in Kazakhstan, none of them have specifically examined the burden of this disease. Therefore, this article aims to provide an overview of the breast cancer prevalence, incidence, mortality, and distribution and changes over time in Kazakhstan based on nationwide large-scale healthcare data from the National Registry in order to encourage more research on the impact of various diseases at the regional and national levels.MethodsThe study cohort included all adult women older than 25 years who were diagnosed with breast cancer in any clinical setting of the Republic of Kazakhstan during the period of 2014–2019. The data were extracted from the Unified Nationwide Electronic Health System (UNEHS) to get an overview of descriptive statistics, incidence, prevalence, and mortality rate calculations and the Cox proportional hazards regression model. All survival functions and factors associated with mortality were tested for significance.ResultsThe cohort population (n = 55,465) comprised subjects with the age at the diagnosis of breast cancer from 25 to 97 years, with a mean of 55.7 ± 12.0 years. The majority of the study population belonged to the age group 45–59 years, which is 44.8% of the cohort. The all-cause mortality rate of the cohort is 16%. The prevalence rate increased from 30.4 per 10,000 population in 2014 to 50.6 in 2019. The incidence rate varied from 4.5 per 10,000 population in 2015 to 7.3 in 2016. Mortality rates were stable and high in the senile age patients (75–89 years old). Breast cancer mortality was positively associated with women who had been diagnosed with diabetes, HR 1.2 (95% CI, 1.1–2.3), whereas it was negatively associated with arterial hypertension, HR 0.4 (95% CI, 0.4–0.5).ConclusionOverall, Kazakhstan is experiencing an increase in the incidence of breast cancer cases, but the mortality rate has started to decline. The switch to population mammography screening could reduce the breast cancer mortality rate. These findings should be utilized to help Kazakhstan determine what cancer control priorities should be utilized, including the need to implement efficient and affordable screening and prevention programs.
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