In her Budget speech Tuesday, Finance Minister Nirmala Sitharaman said, “To provide relief to cancer patients, I propose to fully exempt three more medicines from customs duties,” she said, referring to trastuzumab deruxtecan, osimertinib and durvalumab, three targeted therapy drugs with effective treatment outcomes that work by precisely identifying and inhibiting the growth of cancer cells. At present, these patented drugs, which are imported, are prohibitively expensive, costing around Rs 5 lakh a month, keeping it out of reach for most patients. Which is why, Sitharaman’s announcement – of slashing…