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Radiotherapy combined with chemotherapy increases the risk of herpes zoster in patients with gynecological cancers: a nationwide cohort study

Journal of Gynecologic Oncology 2021년 32권 2호 p.13 ~ 13
Lee Peng-Yi, Lai Jung-Nien, Chen Shang-Wen, Lin Ying-Chun, Chiu Lu-Ting, Wei Yu-Ting,
소속 상세정보
 ( Lee Peng-Yi ) - China Medical University Hospital Department of Radiation Oncology
 ( Lai Jung-Nien ) - China Medical University College of Chinese Medicine School of Chinese Medicine
 ( Chen Shang-Wen ) - China Medical University Hospital Department of Radiation Oncology
 ( Lin Ying-Chun ) - China Medical University Hospital Department of Radiation Oncology
 ( Chiu Lu-Ting ) - China Medical University Hospital Management Office for Health Data
 ( Wei Yu-Ting ) - Buddhist Tzu Chi Medical Foundation Taichung Tzu Chi Hospital Preventive Medicine Center

Abstract


Objective: This study aimed to determine the effect of radiotherapy (RT) on the risk of herpes zoster (HZ) in patients with gynecological cancers via a nationwide population-based study.

Methods: Based on patient data obtained from the National Health Insurance Research Database, 1928 gynecological cancer patients were identified with 1:1 matching for RT and non-RT cohorts by age, index date, and cancer type. Another cohort consisting of 964 non-cancer individuals matched was used as normal control. The incidence of HZ was compared between cancer patients with and without RT. Age, comorbidities, cancer-related surgery and chemotherapy (CT), and cancer type were adjusted as confounders.

Results: The risk of HZ in cancer patients was higher than that of non-cancer individuals (14.23 versus 8.34 per 1,000 person-years [PY], the adjusted hazard ratio [aHR]=1.38, p=0.044). In the cancer population, the incidence of HZ for the RT and non-RT cohorts was 20.55 versus 10.23 per 1,000 PY, respectively (aHR=1.68, p=0.009). Age >50 years was an independent factor for developing HZ. The 5-year actuarial incidence for patients receiving neither RT nor CT, RT alone, CT alone, and combined modalities was 5.4%, 6.9%, 3.7%, and 9.9%, respectively (p<0.001). In the RT cohort, the risk rose rapidly in the first year, becoming steady thereafter.

Conclusion: This population-based study showed that gynecological cancer patients receiving RT combined with CT had the highest cumulative risk of HZ. Health care professionals should be aware of the potential toxicities.

키워드

Gynecologic Neoplasms; Herpes Zoster; Cohort Study; Radiotherapy; Chemotherapy

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