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Incidence Trends of Gastric Cancer in Southern Iran: Adenocarcinoma and Non-cardia Gastric Cancer Are More Rising Among Younger Ages

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Abstract

Background

Gastric Cancer (GC) is still one of the major causes of cancer mortality. Due to health-related transitions, the epidemiology of GC subtypes may change. These changes may have profound effects on clinical approaches as well as on public health management of GC. Iran, as a developing country, has experienced huge demographic and epidemiological transitions during the recent decades. This study aimed to investigate the subtype-specific population-based incidence trends of GC in southern Iran.

Methods

We used data on GC incidence in southern Iran during 2001–2015. Data preparation and subtype grouping were done based on the ICD-O-3. The trends of Age-Standardized incidence Rate (ASR), truncated ASRs, incidence rate of adenocarcinoma, and cardia GC, and age-gender specific rates were analyzed using joinpoint regression modeling. Annual Percentage Change (APC) and its 95% Confidence Intervals (CIs) were estimated.

Results

Overall APC was estimated as 7.2 for males and 8.7 for females. The estimated APCs for the trends of overall GC, and gastric adenocarcinoma were stable in both genders during 2009-2015. Nonetheless, cardia GC showed increasing trends in both genders. The estimated APCs for the trends of non-cardia GC was also stable.

Conclusion

The overall trends of the GC incidence in southern Iran were stable during the past decade. However, significant and different changes have occured in the pattern of GC. Thus, etiological and prognostic studies are needed for the improvement of GC management in Iran.

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Data Availability

The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.

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Acknowledgements

This report was extracted from MH’s thesis in general medicine. Hereby, the authors would like to thank Ms. A. Keivanshekouh at the Research Consultation Center (RCC) of Shiraz University of Medical Sciences for improving the use of English in the manuscript.

Funding

The study was funded by Shiraz University of Medical Sciences.

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Authors and Affiliations

Authors

Contributions

KBL proposed the idea and supervised the study; HMV conceptualized and designed the study, analyzed the data, and revised the manuscript; MHB conducted data cleaning and data preparation, participated in conceptual frame-working and data analysis, and drafting the manuscript; ZKh was responsible for data collection and its quality. All authors read the final version of the manuscript.

Corresponding author

Correspondence to Kamran Bagheri-Lankarani.

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Ethics Approval

The study was approved by the Ethics Committee of Shiraz University of Medical Sciences.

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Not applicable.

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Not applicable.

Conflict of Interest

ZK is affiliated with the Shiraz Population-Based Cancer Registry. Others declare no conflict of interests.

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Hosseini-Bensenjan, M., Vardanjani, H.M., Khosravizadegan, Z. et al. Incidence Trends of Gastric Cancer in Southern Iran: Adenocarcinoma and Non-cardia Gastric Cancer Are More Rising Among Younger Ages. J Gastrointest Canc 53, 841–847 (2022). https://doi.org/10.1007/s12029-021-00722-x

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