Nancy Fern Olivieri | |
---|---|
Born | 1954 |
Nationality | Canadian |
Alma mater | University of Toronto Harvard University |
Awards | AAAS Award for Scientific Freedom and Responsibility (2009), John Maddox Prize (2023) |
Scientific career | |
Fields | Hematology |
Institutions | University of Toronto |
Nancy Fern Olivieri (born 1954) is a prominent Toronto haematologist and researcher with an interest in the treatment of haemoglobinopathies. She is best known for a protracted struggle with the Hospital for Sick Children and the pharmaceutical company Apotex about the drug deferiprone. [1]
Olivieri was born to the Hamilton, Ontario, Doctor Fernando Olivieri and Victoria Olivieri. [2] Her paternal grandfather had immigrated to Hamilton from Italy in 1909. [2] Olivieri received a Bachelor of Science from the University of Toronto and an MD from McMaster University in 1978. [3] She has also pursued training in Internal Medicine and Hematology at McMaster, University of Toronto, and Harvard University. [3]
Starting in 1989, Olivieri was part of a group evaluating the use of a drug, deferiprone, in treating persons with the blood disorder thalassaemia. [1] Starting from 1985, this work included a clinical trial partly funded by Apotex. During the course of the trial, Olivieri became concerned about evidence that pointed to the drug being inefficacious for some patients. Olivieri informed both the research ethics board that was monitoring the study and Apotex, the drug maker. The research ethics board instructed Olivieri to inform participants about her concerns. Apotex responded by noting that Olivieri had signed a confidentiality agreement as part of the drug trial and that informing participants about her concerns, the validity of which Apotex disputed, would violate that confidentiality agreement. In 1996, Apotex threatened to vigorously pursue legal remedies against her if she disclosed her conclusions to patients. [1] Olivieri disclosed her concerns to her patients and Apotex ended the portion of the study in which she was participating. In 1998, the New England Journal of Medicine published a paper by Olivieri and seven other authors, with further study results suggesting that deferiprone led to progressive hepatic fibrosis. [4] [5]
Olivieri's scientific findings, which sparked the controversy, have been challenged on the basis of data from clinical trials conducted by Apotex. [6] [7] [8]
Deferiprone is approved for use in over 50 countries, but not in Canada. [9] It was approved in the US in 2011 under the FDA's accelerated approval program. [10]
An investigation commissioned by the Canadian Association of University Teachers (CAUT) revealed that one of Olivieri's critics, Gideon Koren, had anonymously sent disparaging letters about Olivieri to the media and colleagues. Koren initially denied responsibility, but substantial DNA evidence tied him to the letters, and he was reprimanded. [11]
Olivieri has advocated greater academic freedom and called for less control of research by pharmaceutical companies. [12] This situation was publicised extensively and was investigated by the Canadian Association of University Teachers. [11]
Olivieri was awarded the 2009 AAAS Award for Scientific Freedom and Responsibility for her "indefatigable determination that patient safety and research integrity come before institutional and commercial interests and for her courage in defending these principles in the face of severe consequences." [13]
Olivieri is the 2023 recipient of the John Maddox Prize in recognition of her “determination to act with integrity…in the face of extreme pressure from the company producing it, ultimately at great personal cost” in the Deferiprone controversy. [14] The Maddox Prize is awarded by the UK-based Sense about Science charity in partnership with Nature (journal).
Gene therapy is a medical technology that aims to produce a therapeutic effect through the manipulation of gene expression or through altering the biological properties of living cells.
Thalassemias are inherited blood disorders that manifest as the production of reduced or zero quantities of hemoglobin. Symptoms depend on the type of thalassemia and can vary from none to severe, including death. Often there is mild to severe anemia as thalassemia can affect the production of red blood cells and also affect how long the red blood cells live. Symptoms of anemia include feeling tired and having pale skin. Other symptoms of thalassemia include bone problems, an enlarged spleen, yellowish skin, pulmonary hypertension, and dark urine. Slow growth may occur in children. Clinically, thalassemia is classed as Transfusion-Dependent Thalassemia (TDT) or non-Transfusion-Dependent Thalassemia (NTDT), since this determines the principal treatment options. TDT requires regular transfusions, typically every two to five weeks. TDTs include Beta-thalassemia major, nondeletional HbH disease, survived Hb Bart's disease, and severe HbE/beta-thalassemia. NTDT does not need regular transfusions but may require transfusion in case of an anemia crisis.
Ticlopidine, sold under the brand name Ticlid, is a medication used to reduce the risk of thrombotic strokes. It is an antiplatelet drug in the thienopyridine family which is an adenosine diphosphate (ADP) receptor inhibitor. Research initially showed that it was useful for preventing strokes and coronary stent occlusions. However, because of its rare but serious side effects of neutropenia and thrombotic microangiopathy it was primarily used in patients in whom aspirin was not tolerated, or in whom dual antiplatelet therapy was desirable. With the advent of newer and safer antiplatelet drugs such as clopidogrel and ticagrelor, its use remained limited.
Drotrecogin alfa (activated) (Xigris, marketed by Eli Lilly and Company) is a recombinant form of human activated protein C that has anti-thrombotic, anti-inflammatory, and profibrinolytic properties. Drotrecogin alpha (activated) belongs to the class of serine proteases. Drotrecogin alfa has not been found to improve outcomes in people with severe sepsis. The manufacturer's aggressive strategies in marketing its use in severe sepsis have been criticized. On October 25, 2011, Eli Lilly & Co. withdrew Xigris from the market after a major study showed no efficacy for the treatment of sepsis.
Rifaximin, is a non-absorbable, broad spectrum antibiotic mainly used to treat travelers' diarrhea. It is based on the rifamycin antibiotics family. Since its approval in Italy in 1987, it has been licensed in over more than 30 countries for the treatment of a variety of gastrointestinal diseases like irritable bowel syndrome, and hepatic encephalopathy. It acts by inhibiting RNA synthesis in susceptible bacteria by binding to the RNA polymerase enzyme. This binding blocks translocation, which stops transcription. It is marketed under the brand name Xifaxan by Salix Pharmaceuticals.
Alpha-thalassemia is a form of thalassemia involving the genes HBA1 and HBA2. Thalassemias are a group of inherited blood conditions which result in the impaired production of hemoglobin, the molecule that carries oxygen in the blood. Normal hemoglobin consists of two alpha chains and two beta chains; in alpha-thalassemia, there is a quantitative decrease in the amount of alpha chains, resulting in fewer normal hemoglobin molecules. Furthermore, alpha-thalassemia leads to the production of unstable beta globin molecules which cause increased red blood cell destruction. The degree of impairment is based on which clinical phenotype is present.
Beta thalassemias are a group of inherited blood disorders. They are forms of thalassemia caused by reduced or absent synthesis of the beta chains of hemoglobin that result in variable outcomes ranging from severe anemia to clinically asymptomatic individuals. Global annual incidence is estimated at one in 100,000. Beta thalassemias occur due to malfunctions in the hemoglobin subunit beta or HBB. The severity of the disease depends on the nature of the mutation.
Apotex Inc. is a Canadian pharmaceutical corporation. Founded in 1974 by Barry Sherman, the company is the largest producer of generic drugs in Canada, with annual sales exceeding CA$2.5 billion. By 2023, Apotex employed close to 8,000 people as Canada's largest drug manufacturer, with over 300 products selling in over 115 countries. Apotex manufactures and distributes generic medications for a range of diseases and health conditions that include cancer, diabetes, high cholesterol, glaucoma, infections and blood pressure.
Gideon Koren, FACMT, FRCP(C) is an Israeli-Canadian pediatrician, clinical pharmacologist, toxicologist, and a composer of Israeli folk music. He was a doctor at the Hospital for Sick Children and a professor at the University of Toronto. In 1985, Koren founded the Motherisk Program in Toronto, which was later shut down amid controversy. Furthermore, multiple scientific papers authored by Koren have been subject to concerns regarding academic and research misconduct, leading to the retraction of six research articles and editorial expression of concerns on multiple others. Koren currently has relinquished his licence to practice medicine due to an ongoing investigation into whether he committed “professional misconduct or was incompetent” while he was in charge of the Hospital for Sick Children’s Motherisk laboratory.
Deferiprone, sold under the brand name Ferriprox among others, is a medication that chelates iron and is used to treat iron overload in thalassaemia major. It was first approved and indicated for use in treating thalassaemia major in 1994 and had been licensed for use in the European Union for many years while awaiting approval in Canada and in the United States. On 14 October 2011, it was approved for use in the US under the FDA's accelerated approval program.
Hemosiderosis is a form of iron overload disorder resulting in the accumulation of hemosiderin.
Delta-beta thalassemia is a rare form of thalassemia in which there is a reduced production of hemoglobin subunit delta and hemoglobin subunit beta and raised levels of hemoglobin subunit gamma. It is an autosomal recessive disorder.
Congenital dyserythropoietic anemia (CDA) is a rare blood disorder, similar to the thalassemias. CDA is one of many types of anemia, characterized by ineffective erythropoiesis, and resulting from a decrease in the number of red blood cells (RBCs) in the body and a less than normal quantity of hemoglobin in the blood. CDA may be transmitted by both parents autosomal recessively or dominantly.
Crofelemer is an antidiarrheal indicated for the symptomatic relief of non-infectious diarrhea in adult patients with HIV/AIDS on antiretroviral therapy. Other possible uses include diarrhea in children, acute infectious diarrhea, and diarrhea in patients with irritable bowel syndrome. It is a purified oligomeric proanthocyanidin from "dragon's blood", the sap of the South American tree Croton lechleri.
Treatment of the inherited blood disorder thalassemia depends upon the level of severity. For mild forms of the condition, advice and counseling are often all that are necessary. For more severe forms, treatment may consist in blood transfusion; chelation therapy to reverse iron overload, using drugs such as deferoxamine, deferiprone, or deferasirox; medication with the antioxidant indicaxanthin to prevent the breakdown of hemoglobin; or a bone marrow transplant using material from a compatible donor, or from the patient's mother. Removal of the spleen (splenectomy) could theoretically help to reduce the need for blood transfusions in people with thalassaemia major or intermedia but there is currently no reliable evidence from clinical trials about its effects. Population screening has had some success as a preventive measure.
Cooley’s Anemia Foundation (CAF) is an American 501(c)(3) nonprofit organization that funds medical research and education to benefit individuals living with the genetic blood disorder thalassemia. The major form of this disorder is also known as Cooley's anemia.
Betibeglogene autotemcel, sold under the brand name Zynteglo, is a gene therapy for the treatment for beta thalassemia. It was developed by Bluebird Bio and was given breakthrough therapy designation by the US Food and Drug Administration in February 2015.
Allan Victor Hoffbrand is emeritus Professor of Haematology at University College, London. He is distinguished for his research and as an author of internationally read textbooks of haematology. He was born in Bradford, Yorkshire in 1935. After education at Bradford Grammar School, he gained an Open Scholarship in 1953 to The Queen's College, Oxford. He gained a BA degree in Physiology and began clinical studies at The London Hospital in 1957 and qualified in medicine at University of Oxford, BM BCH in 1959.
Luspatercept, sold under the brand name Reblozyl, is a medication used for the treatment of anemia in beta thalassemia and myelodysplastic syndromes.
Robert Williamson is a retired British-Australian molecular biologist who specialised in the mapping, gene identification, and diagnosis of human genetic disorders.
July 2024 mention in Indian Journal of Medical Ethics Founding member of charity RxISK.org which power blogs Rxisl blog and David Healy blog