 But in 1951, a second finding turned out that this feature affects one in three individuals.The similarity could be a coincidence.In 1999, heart drawn in 1795 by the physician Jean-Philippe Pelletan, after the autopsy of Louis XVII, and kept in the royal crypt of the Basilica of Saint-Denis, is subjected to DNA analysis being carried out by professors Cassiman, Leuven, and Brinkmann, University of Münster in Germany, at the initiative of the historian Philippe Delorme.