• Adiposity and asthma in adults: a bidirectional Mendelian randomization analysis of the HUNT Study 

      Sun, Yi-Qian; Brumpton, Ben Michael; Langhammer, Arnulf; Chen, Yue; Kvaløy, Kirsti; Mai, Xiao-Mei (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-10-14)
      <i>Background</i> - We aimed to investigate the potential causal associations of adiposity with asthma overall, asthma by atopic status or by levels of symptom control in a large adult population and stratified by sex. We also investigated the potential for reverse causation between asthma and risk of adiposity.<p> <p><i>Methods</i> - We performed a bidirectional one-sample Mendelian randomisation ...
    • Assessing the role of genome-wide DNA methylation between smoking and risk of lung cancer using repeated measurements: the HUNT Study 

      Sun, Yi-Qian; Richmond, Rebecca C.; Suderman, Matthew; Min, Josine L; Battram, Thomas; Flatberg, Arnar; Beisvag, Vidar; Nøst, Therese Haugdahl; Guida, Florence; Jiang, Lin; Wahl, Sissel Gyrid Freim; Langhammer, Arnulf; Skorpen, Frank; Walker, Rosie M; Bretherick, Andrew D; Zeng, Yanni; Chen, Yue; Johansson, Mattias; Sandanger, Torkjel M; Relton, Caroline L; Mai, Xiao-Mei (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-03-17)
      <i>Background</i> - It is unclear if smoking-related DNA methylation represents a causal pathway between smoking and risk of lung cancer. We sought to identify novel smoking-related DNA methylation sites in blood, with repeated measurements, and to appraise the putative role of DNA methylation in the pathway between smoking and lung cancer development.<br><br> <i>Methods</i> - We derived a nested ...