How do pain genes affect pain experience? / Marshall Devor -- Conservation of pain genes across evolution / Thang Manh Khuong and G. Greg Neely -- Defining human pain phenotypes for genetic association studies / Christopher Sivert Nielsen -- Genetic contributions to pain and analgesia : interactions with sex and stress / Roger B. Fillingim and Jeffrey S. Mogil -- Monogenic pain disorders / Geoff Woods -- Alternative pre-mRNAsplicing of mu opioid receptor gene: molecular mechanisms underlying the complex actions of mu opioids / Ying-Xian Pan -- Discovering multi-locus associations with complex pain phenotypes / Chia-Ling Kuo, Luda Diatchenko, Dmitri Zaykin -- Overlapping phenotypes : genetic contribution to nausea and pain / Charles C. Horn -- A counterpart to pain : itch / Adam P. Kardon and Sarah E. Ross -- Translating genetic knowledge into clinical practice for musculoskeletal pain conditions / Luda Diatchenko, Shad B. Smith, William Maixner -- The human chronic pain phenome : mapping non-genetic modifiers of the heritable risk / Ze'ev Seltzer, Scott R. Diehl, Hance Clarke and Joel Katz