Deferiprone was the drug at the heart of the Barry Sherman/Hospital for Sick Children/University of Toronto conflict (which had begun in 1995, and continues to the present). You can read The Olivieri Report, the independent review commissioned by the Canadian Association of University Teachers (see caut.ca [search “Olivieri” for more on this saga), here:
https://www.caut.ca/issues-and-campaigns/academic-freedom/reports
Concerns about the safety and long-term effectiveness of a drug deferiprone had been raised by Dr. Nancy Olivieri, after which she was harassed, disparaged, fired, threatened, and eventually sued.
Two excellent summaries (taking us up to the year 2004) are those
(i) by Professor Arthur Schafer published in J Med Ethics in The Olivieri Symposium https://jme.bmj.com/content/30/1/8
and that by David Nathan and David Weatherall published in the N Eng J Med, 2002. https://www.nejm.org/doi/pdf/10.1056/NEJMsb020394
Dr. Olivieri published her scientific findings, despite ongoing threats from Barry Sherman, in the New England Journal of Medicine in 1998:
https://www.nejm.org/doi/full/10.1056/nejm199808133390701
Barry Sherman followed through with his threats of “all legal remedies” as documented here. (You can also read other documents relevant to Dr. Olivieri’s harassment at caut.ca (search Olivieri):
https://www.caut.ca/latest/publications/academic-freedom/academic-freedom-cases/dr-nancy-olivieri/apotex-inc-v-olivieri-an-attack-on-academic-freedom
https://www.caut.ca/issues-and-campaigns/academic-freedom/academic-freedom-cases/dr-nancy-olivieri