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Purpose <p>Patients with cancer have an elevated risk of chronic kidney disease (CKD); however, long-term alterations in kidney function among working-age individuals remain underexplored. This study aimed to evaluate differences in the rate of kidney function decline between working-age patients with cancer who received anticancer drug treatment and individuals without a history of cancer.</p> Methods <p>This retrospective cohort study used data from the Panasonic Health Insurance Organization (2017–2021). The cancer patient (CP) and non-cancer patient (NCP) groups were defined based on cancer diagnosis and anticancer drug treatment, respectively. Propensity score matching aligned demographics and health factors. Standardized and individualized eGFR changes from the year before diagnosis (Year F) to F + 4 were evaluated across age groups (≤ 50 and ≥ 51&#xa0;years).</p> Results <p>Each group comprised 395 matched individuals. The CP group demonstrated significant decreases in both standardized and individualized eGFR by F + 4 (<i>p</i> = 0.007 and <i>p</i> &lt; 0.001, respectively), whereas the NCP group showed no significant decline. The decline was particularly significant in CP ≤ 50&#xa0;years (<i>p</i> &lt; 0.001) but not in those ≥ 51&#xa0;years. Linear mixed-effects models confirmed a significantly larger annual decline in individualized eGFR in the CP group, particularly among younger individuals.</p> Conclusions <p>Working-age patients with cancer during active treatment or early follow-up, particularly those aged ≤ 50&#xa0;years, face a significantly higher risk of impaired kidney function than individuals without a history of cancer. These findings highlight the need for long-term kidney monitoring and protective strategies, especially among younger patients with cancer, to mitigate CKD progression and preserve quality of life and employment outcomes.</p>

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Kidney function decline in working-age adults with cancer diagnosis: A study utilizing claims and health checkup data

  • 期刊论文

  • 发表日期：

    2026年3月27日

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  • Hiroyuki Watanabe,
  • Masayuki Tsujimoto,
  • Hiroshi Okada,
  • Yoshitaka Hashimoto,
  • Ryo Inose,
  • Michiaki Fukui,
  • Yuichi Muraki

摘要

Purpose

Patients with cancer have an elevated risk of chronic kidney disease (CKD); however, long-term alterations in kidney function among working-age individuals remain underexplored. This study aimed to evaluate differences in the rate of kidney function decline between working-age patients with cancer who received anticancer drug treatment and individuals without a history of cancer.

Methods

This retrospective cohort study used data from the Panasonic Health Insurance Organization (2017–2021). The cancer patient (CP) and non-cancer patient (NCP) groups were defined based on cancer diagnosis and anticancer drug treatment, respectively. Propensity score matching aligned demographics and health factors. Standardized and individualized eGFR changes from the year before diagnosis (Year F) to F + 4 were evaluated across age groups (≤ 50 and ≥ 51 years).

Results

Each group comprised 395 matched individuals. The CP group demonstrated significant decreases in both standardized and individualized eGFR by F + 4 (p = 0.007 and p < 0.001, respectively), whereas the NCP group showed no significant decline. The decline was particularly significant in CP ≤ 50 years (p < 0.001) but not in those ≥ 51 years. Linear mixed-effects models confirmed a significantly larger annual decline in individualized eGFR in the CP group, particularly among younger individuals.

Conclusions

Working-age patients with cancer during active treatment or early follow-up, particularly those aged ≤ 50 years, face a significantly higher risk of impaired kidney function than individuals without a history of cancer. These findings highlight the need for long-term kidney monitoring and protective strategies, especially among younger patients with cancer, to mitigate CKD progression and preserve quality of life and employment outcomes.