Second cancers are a substantial clinical problem in survivorship. A genome-wide association study (GWAS) in survivors of Hodgkin's lymphoma treated with radiotherapy now identifies a region of susceptibility on chromosome 6q21 (pages 941–943), paving the way for further investigations of the complex interplay between genetic susceptibility and environmental exposures involved in the development of second cancers.
- Lindsay M Morton
- Stephen J Chanock
