Marty Makary’s “One Pharm Fix: Limit the ‘Orphan Drug’ Incentives” (op-ed, Dec. 21) addresses shortcomings of the Orphan Drug Act that lead to increased costs to consumers and insurers. While better controls of financial oversight of orphan drugs might lead to lower medical costs and reduce patient expectations for some of the unsupported off-label claims, I would argue that the Orphan Drug Act does not provide enough incentive for the development of drugs to treat low- and mid-grade cancers such as primary brain gliomas and medulloblastoma tumors that I have treated for 43 years.
The drugs needed may take many preclinical years to develop and 12 years to do the clinical trial required by the FDA. In addition, one drug is likely to be insufficient for tumor control and two to three drugs targeted to specific pathways may be needed. Complicating this is the likelihood that one drug may provide limited antitumor efficacy and two to three drugs together may be needed to control tumor growth and future transformation to a more malignant glioblastoma. In this case, Orphan Drug 7-year exclusivity is an inadequate incentive as the drugs may easily take 15-17 years to develop and test and hundreds of millions of dollars in cost, leaving insufficient time to recover costs associated with this risky undertaking to develop chemotherapy for these rare tumors. This argument is also true for many other low- and mid-grade solid cancers.