VT Research Finds a 37% Decline in Small-Molecule Oncology Follow-On Research Following the Inflation Reduction Act
Key Findings
1. Decline in overall follow-on research
The observed number of follow-on studies decreased by approximately 12%, from 610 before the IRA to 535 afterward. Oncology accounted for much of this decline, with the observed number of follow-on cancer studies falling by 20%, from 325 to 260.
2. Significant decline in small-molecule cancer research
The study’s statistical models estimated a 37% decline in the average annual number of small-molecule oncology follow-on studies, from 52 before the IRA to 33 afterward. The analysis also identified a modeled 27% decline in lead-indication small-molecule oncology approvals.
These findings provide evidence that research involving small-molecule cancer medicines may have been particularly affected following the IRA’s introduction.
3. Reduced share of research targeting rare cancers
The proportion of follow-on oncology studies focused on rare diseases, known as orphan indications, declined by 14% after the IRA’s introduction. This finding raises questions about the potential implications for research involving patients with rare cancers and limited treatment options.
4. Different trends in hematology
In contrast to oncology, the study found an increase in follow-on small-molecule hematology studies. However, this increase started from a low baseline, and the overall findings for hematology differed from those for oncology.










