Background
The association between heart failure (HF) patients and the incidence of cancer is not well understood, with conflicting results to date.
Objective
The aim of this meta-analysis was to evaluate whether patients with HF have a higher risk of developing cancer.
Material and Methods
We performed a systematic literature search using PubMed, Embase, and Scopus for relevant articles from inception until 10th December 2022. Primary clinical outcomes were the incidence of cancer. Secondary endpoints were the incidence of breast cancer, lung cancer, hematological cancer, colorectal cancer, and prostate cancer.
Results
A total of 10 articles with 7,335,834 (518,105 Heart Failure vs. 6,817,729 non-Heart Failure) patients were involved in the analysis. The mean age of the patients with HF and the non-HF group was 70.0 and 69.2 years. The median follow-up duration was 5.1 years. The most common Comorbidity among both groups includes DM (27.67% vs. 14.53%) and HTN (81.88% vs. 57.5%). Patients with HF were associated with a significant increase in the incidence of cancer, [HR, 1.43 (95%CI: 1.22-1.68), P<0.001], breast cancer [HR, 1.28 (95%CI: 1.09-1.50), P<0.00], lung cancer [HR, 1.89 (95%CI: 1.25-2.85), P<0.001), hematological cancer [HR, 1.63 (95%CI: 1.15-2.33), P=0.01), colorectal cancer [HR, 1.32 (95%CI: 1.11-1.57), P<0.001) compared with patients without HF. However, the incidence of prostate cancer was comparable between both groups [HR, 0.97 (95%CI: 0.66-1.43), p=0.88].
Conclusion
This meta-analysis confirms that the state of heart failure is associated with a higher risk for incident cancer. These data may aid in raising awareness with physicians that cancer may develop in patients with prevalent heart failure and that early screening and evaluation may be useful in an early diagnosis of cancer.