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Heart transplantation provides feasible treatment with favorable long-term survival for end-stage Chagas heart diseaseHeart transplant offers long term survival for Chagas heart disease

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Key Takeaway
Consider heart transplantation as a feasible option for end-stage Chagas heart disease with favorable long-term survival.

This meta-analysis evaluates outcomes for patients with Chagas heart disease (ChHD) who have undergone heart transplantation. The study included a sample size of 305 patients to assess survival, complications, and the impact of specific medications like azathioprine (AZA) and mycophenolate mofetil (MMF).

The analysis found that heart transplantation is a feasible treatment option associated with acceptable long-term survival outcomes in patients with end-stage Chagas heart disease. Survival was noted as relatively favorable compared to other cardiomyopathies. Regarding specific medications, AZA exposure was associated with lower parasite reactivation, while MMF exposure was associated with lower death. Additionally, complications, reactivation, and death were associated with male sex.

The authors note several limitations, including confounding by indication, differences in transplantation eras, and varying monitoring strategies. There was also a lack of adjustment for key patient-level confounders in historical comparisons and potential switching-time bias. Because of these factors, the associations between specific medications and outcomes cannot be interpreted as causal treatment effects. Clinical application is limited by these confounding factors and the lack of adjusted historical data.

How this fits prior evidence

This finding addresses a gap in the management of end-stage Chagas heart disease by identifying heart transplantation as a feasible treatment option. While previous coverage has addressed various heart failure interventions, such as the use of dapagliflozin in frail patients with aortic stenosis and the use of cardiac resynchronization therapy in cancer-related heart failure, this meta-analysis specifically addresses the surgical management and long-term survival of Chagas heart disease patients.

Living with Chagas heart disease can be incredibly difficult as the condition progresses to end-stage heart failure. For these patients, a heart transplant is a feasible treatment option. The data shows that these patients can achieve relatively favorable long term survival when compared to other types of heart muscle diseases.

Researchers looked at 305 transplant recipients to see how different factors influenced outcomes. They found that patients who took the medication mycophenolate mofetil showed lower rates of death. They also found that patients who took azathioprine had lower rates of parasite reactivation. However, the study noted that being male was associated with higher rates of complications, reactivation, and death.

It is important to note that these findings come from a historical comparison. Because of factors like different monitoring styles over time and the era of transplantation, the results cannot be used to prove that one medication directly caused the better outcomes. These findings highlight that while transplant is a viable option, individual results depend on many complex factors.

What this means for you:
Heart transplants offer a viable treatment and favorable long term survival for patients with advanced Chagas heart disease.

Common questions

Is a heart transplant a viable option for Chagas heart disease?

Yes, heart transplantation is a feasible treatment option for patients with end-stage Chagas heart disease. The data shows that these patients can achieve relatively favorable long term survival outcomes when compared to other types of heart muscle diseases.

How do the medications azathioprine and mycophenolate mofetil affect outcomes?

The study found that exposure to azathioprine was associated with lower rates of parasite reactivation. Additionally, exposure to mycophenolate mofetil was associated with lower rates of death among the 305 transplant recipients studied.

Are there specific risks for certain patients after a transplant?

The study found that being male was associated with increased rates of complications, parasite reactivation, and death. Because these results come from a historical comparison, they do not prove a direct cause, but they highlight different risks for different patients.

Study Details

Study typeMeta analysis
EvidenceLevel 1
PublishedOct 2026
View Original Abstract ↓
IntroductionChagas heart disease (ChHD) is a leading trigger of end-stage heart failure in Latin America, with heart transplantation as its final treatment. Large-scale individual patient data (IPD) evidence on transplant immunosuppression, parasite reactivation and long-term prognosis remains scarce.MethodsWe conducted an IPD meta-analysis by retrieving eligible studies up to October 4, 2025, extracting individual clinical data and adopting one-stage IPD and Cox regression analyses.ResultsSixteen studies with 305 ChHD transplant recipients were enrolled. Male sex was associated with increased risks of complications, reactivation, and death in observational analyses. Similarly, AZA exposure was associated with a lower risk of reactivation, and MMF exposure was associated with a lower risk of death. Notably, exploratory historical comparison suggests relatively favourable long-term survival among selected ChHD transplant recipients relative to published cohorts of other cardiomyopathies, though this finding cannot be adequately adjusted for key patient-level confounders.DiscussionThese associations are subject to confounding by indication, transplantation era, monitoring strategies, and switching-time bias. They therefore cannot be interpreted as causal treatment effects, nor can they establish that any one regimen is superior. In selected patients with end-stage Chagas heart disease, heart transplantation is a feasible treatment option associated with acceptable long-term survival outcomes.Systematic Review RegistrationPROSPERO [CRD420251163696].
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