Real-world evidence regarding cancer, mortality, and graft failure risk with de novo belatacept use among kidney transplant recipients in the United States.

Belatacept is a selective T-cell co-stimulation blocker used in maintenance immunosuppression for kidney transplant recipients (KTRs), but evidence on cancer risk and other outcomes is limited. This retrospective cohort study used linked US transplant and cancer registry data on KTRs treated with belatacept (N=1514) or tacrolimus (N=7570) as initial maintenance therapy. We used multivariable Cox regression models to compare incidence of invasive cancer, cutaneous squamous cell carcinoma (cSCC), posttransplant lymphoproliferative disorder (PTLD), death, and graft failure/retransplantation (GF/RT) between belatacept and tacrolimus users.

Primary effusion lymphoma in people with and without HIV infection in the United States.

Objective: Primary effusion lymphoma (PEL) is a rare non-Hodgkin lymphoma (NHL) subtype caused by Kaposi sarcoma (KS) herpesvirus. We describe PEL incidence and survival in people with HIV (PWH) and people without HIV in the US.

Design: Retrospective cohort study of PEL people with and without HIV.

A Comparative Study of Merkel Cell Carcinoma and Melanoma Incidence and Survival in the United States, 2000-2021.

Merkel cell carcinoma (MCC) and melanoma are important contributors to skin cancer mortality in the United States. We evaluated their epidemiology using the United States cancer registry data. In 2000-2021, 19,444 MCCs and 646,619 melanomas of the skin were diagnosed.

Merkel Cell Carcinoma and Immunosuppression, UV Radiation, and Merkel Cell Polyomavirus.

Importance: Merkel cell carcinoma (MCC) is a rare but aggressive skin cancer. Quantifying the contribution of major potentially modifiable risk factors to the burden of MCC may inform prevention efforts.

Objective: To estimate the population attributable fraction of MCC cases in the US that were attributable to major immunosuppressing conditions (eg, HIV, solid organ transplant, chronic lymphocytic leukemia [CLL]), ambient UV radiation [UVR] exposure, and Merkel cell polyomavirus [MCPyV]).

The burden of COVID-19 mortality among solid organ transplant recipients in the United States.

Solid organ transplant recipients (SOTRs) have a heightened risk of adverse coronavirus disease 2019 (COVID-19) outcomes because of immunosuppression and medical comorbidity. We quantified the burden of COVID-19 mortality in United States (US) SOTRs. A sample of deaths documented in the US solid organ transplant registry from June 2020 through December 2022 was linked to the National Death Index to identify COVID-19 deaths and weighted to represent all SOTR deaths during the study period.

Internet-Based Access to Sexual and Reproductive Health Services Among Colombian Youth: A Cross-Sectional Study.

Sexual and reproductive health (SRH) is a sensitive subject, and young people may be unfamiliar with how to access SRH services. In this cross-sectional study, we examined young people's internet use to understand how they accessed SRH clinics in Colombia. This study also explored Colombian youth's interest in online material teaching how to access SRH services.

Cancers Attributable to Infections in the US in 2017: A Meta-Analysis.

Importance: Infections are largely modifiable causes of cancer. However, there remains untapped potential for preventing and treating carcinogenic infections in the US.

Objective: To estimate the percentage and number of incident cancers attributable to infections in the US among adults and children for the most recent year cancer incidence data were available (2017).