At the 2007 World Taekwondo Championships in Beijing, China, Castrignano shared bronze medals with Chinese Taipei's Tsui Fang-hsuan in the over-72 kg class after her immediate defeat to local favorite and double Olympic champion Chen Zhong in the semifinals. Castrignano also sought her bid for the 2008 Summer Olympics, but she fell behind France's Anne Caroline Graffe in the quarterfinal match at the European Qualification Tournament in Baku, Azerbaijan.