Martingale Dependence Tools and Testing for Mixture Cure Models R package MDCcure version 0.1.0 Computes martingale difference correlation (MDC), martingale difference divergence, and their partial extensions to assess conditional mean dependence. The methods are based on Shao and Zhang (2014) <doi:10.1080/01621459.2014.887012>. Additionally, introduces a novel hypothesis test for evaluating covariate effects on the cure rate in mixture cure models, using MDC-based statistics. The methodology is described in Monroy-Castillo et al. (2025, manuscript submitted). Software Imports: Rcpp, RcppParallel, ggplot2, ggtext, gridExtra, future, future.apply, smcure, npcure, survival LinkingTo: Rcpp, RcppArmadillo, RcppParallel Suggests: knitr, rmarkdown, pinp Blanca Monroy-Castillo <blancamonroy.96@gmail.com> Comprehensive R Archive Network (CRAN) Blanca Monroy-Castillo [aut, cre], Amalia Jácome [aut], Ricardo Cao [aut], Ingrid Van Keilegom [aut], Ursula Müller [aut] GPL-3 2025-07-23 application/tgz https://CRAN.R-project.org/package=MDCcure doi:10.32614/CRAN.package.MDCcure