Devil facial tumour disease (DFTD) is a transmissable cancer that affects Tasmanian devils and has substantially depleted their population, rasing concern that the species faces extinction. However, a new study offers some hope. Epstein et al. report that three populations of Tasmanian devil are exhibiting immune-modulated resistance to DFTD owing to modifications in certain genomic regions that may overcome immune suppression (which is how DFTD spreads between individuals). The selective pressure imposed by DFTD may therefore be encouraging its own undoing.
writes Gemma Alderton in Nature Reviews Cancer to highlight a study in Nat Comm by Epstein et al. The evolution of cancer in Tasmanian devils is really interesting, because it is not intra-tumour evolution, like the rest of the stuff I write about, but the evolution of a transmissible cancer from one devil to the next. It seems they like to bite each others faces. And that spreads the cancer.
Now … if transmissible face cancer is what floats your boat, make sure you also read Dan Graur’s take on it: “All #Hype, No Evidence: Have #TasmanianDevils Evolved Resistance to Facial Tumor Disease? Who knows?“