According to a study published in June 2017 by Ranajit Das, Paul Wexler, Mehdi Pirooznia, and Eran Elhaik in "Frontiers in Genetics", "in a principle component analysis (PCA) DNA, the anvient Levantines the Natufian and Neolithic periods clustered predominantly with modern-day Palestinians and Bedouins..." In a study published in August 2017 by Marc Haber et al. in "The American Journal of Human Genetics", the authors concluded that "The overlap between the Bronze Age and present-day Levantines suggests a degree of genetic continuity in the region."