Key result
First invasive cancer diagnosis is linked to ~80% higher 1-year ischemic stroke risk.
Why the study?
Cancer and stroke share an increasing burden, but population-based estimates of ischemic stroke risk across multiple cancer sites and demographic subgroups were needed.
Does a recent invasive cancer diagnosis increase the risk of first-ever ischemic stroke in adults ≥40 years old?
Cohort (n=182,221)
Does a recent invasive cancer diagnosis increase the risk of first-ever ischemic stroke in adults ≥40 years old?
An invasive cancer diagnosis is associated with a nearly 2-fold increased risk of first-ever ischemic stroke within the first year, with the highest risk occurring in the first 3 months and among patients with pancreatic or lung cancer.
Answers are grounded in this paper and cite their sources.
Captured external expert commentary on this paper, strongest first. Original sources are linked where available.
“Our findings reinforce the importance of a multidisciplinary approach to cancer care. Cancer treatment is, of course, central after diagnosis, but vascular health should not be overlooked. Identifying and appropriately managing modifiable vascular risk factors — while taking the patient's cancer type, stage, age, treatments and overall clinical situation into account — may be particularly important during this period.”
“Our findings identify the first months after a cancer diagnosis as a critical window of heightened ischemic stroke risk. The marked variation across cancer types, with particularly pronounced risk elevations in pancreatic and lung cancers, highlights the importance of identifying patients who may benefit from closer cerebrovascular risk assessment.”
“Our study shows that the risk of a first ischemic stroke is elevated after a cancer diagnosis, but that increase is not uniform across cancer types. The findings support greater attention to vascular risk during the early post-diagnosis period and in higher-risk cancer groups.”
Recent cancer diagnosis warrants early stroke vigilance in high-risk subtypes; extends observational links but leaves optimal prevention strategies open.
BACKGROUND: Cancer and stroke are major causes of morbidity and mortality, with an increasing shared burden. This study aimed to provide population-based estimates of ischemic stroke (IS) risk after cancer diagnosis across multiple cancer sites and demographic subgroups. METHODS: A retrospective cohort study was conducted linking the Israel National Cancer and Stroke Registries. Residents ≥40 years old diagnosed with first invasive cancer during 2014-2021 were followed for first-ever IS within 1 year. IS risk was assessed using standardized incidence ratios (SIRs) and analyzed by cancer site, time since diagnosis, cancer stage, and demographic subgroups. One-year cumulative incidence was estimated with death as a competing event. RESULTS: Among 182,221 patients, the SIR for IS within 1 year after cancer diagnosis was 1.8 (95% confidence interval [CI], 1.7-1.9). Risk peaked during the first 3 months (SIR, 2.5; 95% CI, 2.2-2.7). The highest SIRs were observed for pancreatic (SIR, 5.9; 95% CI, 4.8-7.3) and lung (SIR, 3.9; 95% CI, 3.4-4.4) cancers. SIRs decreased with age from 3.6 (95% CI, 2.8-4.6) among adults 40-54 years old to 1.4 (95% CI, 1.3-1.6) among those ≥75 years old. SIRs increased with stage, from 1.2 (95% CI, 1.0-1.4) in localized disease to 2.8 (95% CI, 2.5-3.2) in metastatic disease. One-year cumulative incidence of IS was 0.62%, ranging from 0.30% in breast cancer to 1.62% in pancreatic cancer. CONCLUSIONS: The early period after cancer diagnosis represents a critical window of increased IS risk. Incorporating targeted cerebrovascular risk assessment into oncologic care may facilitate earlier identification of high-risk subgroups and support tailored prevention strategies.
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Libruder et al. (2026) conducted a cohort in Invasive cancer (n=182,221). Invasive cancer diagnosis vs. General population was evaluated on First-ever ischemic stroke within 1 year (SIR 1.8, 95% CI 1.7-1.9). A first invasive cancer diagnosis was associated with a nearly 2-fold increased risk of first-ever ischemic stroke within 1 year compared to the general population.
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