Actor Network Theory (ANT), and its principal proponent Bruno Latour, have invigorated recent social theory. In assessing the agency of things they offer a fresh perspective on materiality and on the role of the nonhuman (animate and inanimate), and have challenged the central place of sociology in social research. One increasingly influential concept associated with ANT is that of 'assemblage'. The paper takes a contemporary concern -the sudden death of student athletes later found to be genetic carriers of sickle cell -and uses this to assess the concept. Whilst ANT, and the notion of assemblage, offer interesting avenues for research, the difficulty in sustaining a plausible notion of durable, structured social interests carries political consequences.