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1.
Br J Clin Pharmacol ; 87(3): 895-904, 2021 03.
Article in English | MEDLINE | ID: mdl-32559327

ABSTRACT

AIMS: To provide real-life data on patterns of use and safety of ibrutinib. METHODS: A cohort study including all patients initiating ibrutinib between 21 November 2014 and 21 November 2018, and followed for 1 year was conducted. Patient characteristics, ibrutinib use and adverse drug reactions (ADRs) were collected from medical records. Kaplan-Meier analysis estimated the probability of developing ibrutinib-associated serious ADRs (SADRs) with a 95% confidence interval (CI). A Cox proportional hazards model was used to investigate factors associated with SADR occurrence. RESULTS: In total, 102 patients were included in the study. The median age was 70.3 years (interquartile range 64.7-75.6), the male/female gender ratio was 2.9. Almost half the patients (47.1%) were prescribed ibrutinib for chronic lymphocytic leukaemia (CLL). Forty-three patients (42.1%) permanently discontinued ibrutinib in the first year, mostly for progression (51.2%) or ADRs (32.6%). Forty-eight patients (47.1%) experienced at least one ibrutinib-associated SADR. Haematological, infectious and vascular disorders were the most frequent SADRs. The probability of developing ibrutinib-associated SADR was 35.1% (95% CI 26.3-45.7%) at 3 months, 44.8% (35.2%; 55.8%) at 6 months and 54.3% (44.0%; 65.2%) at 12 months. Age ≥80 years (hazard ratio [HR] 2.03; 95% CI 1.02-4.05) and CLL (HR 1.81; 95% CI 1.01-3.25) were significantly associated with a higher risk of SADR occurrence. CONCLUSION: This study found a high cumulative incidence of ibrutinib-associated SADRs within the first year of treatment. In view of the risk of SADR, patients aged ≥80 years or treated for CLL deserve special attention.


Subject(s)
Leukemia, Lymphocytic, Chronic, B-Cell , Adenine/analogs & derivatives , Aged , Aged, 80 and over , Cohort Studies , Female , Humans , Leukemia, Lymphocytic, Chronic, B-Cell/drug therapy , Male , Piperidines , Pyrazoles/adverse effects , Pyrimidines/adverse effects
2.
Fundam Clin Pharmacol ; 34(3): 397-407, 2020 Jun.
Article in English | MEDLINE | ID: mdl-31912913

ABSTRACT

Hearing loss is defined as a decrease in the ability to perceive sounds which can occur suddenly or gradually and affects one ear or both. It is related to various etiologies, in particular drugs. The identification of all drugs that could be associated with hearing loss is essential for the patients' life quality. The objective of our study was to identify signals of hearing loss involving drugs approved in the last 20 years. The occurrence in association with drugs known for their ototoxicity was also analyzed. We used a case/non-case method in the French Pharmacovigilance Database (FPVD). The cases were reports of hearing loss in the FPVD between January 2007 and August 2017. Non-cases were all reports over the same period. We calculated the reporting odds ratio (ROR) with 95% confidence intervals. Among the 555 reports of hearing loss, significant RORs were found for 68 drugs. The main therapeutic classes implicated were antineoplastic agents (n = 240), systemic anti-infective agents (n = 182), immunosuppressants (n = 42) loop diuretics (n = 26), and salicylate analgesics (n = 26). We found signals of hearing loss with azacitidine, vaccines and nevirapine, immunosuppressants such as leflunomide, and biotherapies such as panitumumab and vandetanib. Prescribers should be informed about the potential associations with all these drugs. The role of the pathology itself and the known ototoxic drugs that can be associated do not allow to conclude definitively. Audiograms for the early detection of hearing loss induced by drugs known to be ototoxic are rarely carried out. Preventive treatments exist and must be considered.


Subject(s)
Hearing Loss/chemically induced , Pharmaceutical Preparations/administration & dosage , Adolescent , Adult , Aged , Aged, 80 and over , Antineoplastic Agents/adverse effects , Child , Child, Preschool , Databases, Factual , Female , France , Humans , Immunosuppressive Agents/adverse effects , Infant , Infant, Newborn , Male , Middle Aged , Odds Ratio , Pharmacovigilance , Young Adult
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