The government proposes to cut custom duties on Trastuzumab Deruxtecan, Osimertinib and Durvalumab from 10 per cent to nil. Finance Minister Nirmala Sitharaman also proposed changes in the basic customs duty (BCD) on x-ray tubes and flat panel detectors for use in medical x-ray machines under the phased manufacturing programme, so as to synchronise them with domestic capacity addition.