POLD4 and cancer: PhD students Amrapali Dutta (IISc, Bengaluru) discussed the biophysical basis of the interaction of cancer cell clusters with mammary epithelium that aids cell competition during cancer initiation, and Jugal Kishore Sahu (ILS, Bhubaneshwar) showed that POLD4 of human DNA polymerase-δ is required for genomic stability and is differentially expressed in various tumours.