Publications by authors named "Leenhardt F"

A 76-year-old female patient presented with an iodine-refractory papillary thyroid carcinoma (PTC), diagnosed eight years earlier, with several lymph node recurrences requiring successive surgeries. Fluorodeoxyglucose ([F]FDG) positron emission tomography/computed tomography (PET/CT) imaging revealed a new unresectable loco-regional recurrence. The patient was diagnosed with a somatic BRAF V600E mutation.

View Article and Find Full Text PDF

Purpose: To ensure the safe use of oral anticancer drugs, oncology pharmacy consultations (OPCs) have been established in France. They are conditioned by the needs, expectations, and involvement of the patients in their care. Thus, it is essential to elicit their preferences.

View Article and Find Full Text PDF

A combination of tyrosine kinase inhibitors (TKIs) is likely to be a therapeutic option for numerous oncological situations due to high frequency of oncogenic addiction and progress in precision oncology. Non-small cell lung cancer (NSCLC) represents a subtype of tumors for which oncogenic drivers are frequently involved. To the best of our knowledge, we report the first case of a patient treated with three different TKIs.

View Article and Find Full Text PDF

Despite the efficacy of targeted therapies in melanoma, the management of adverse events with BRAFi and MEKi (inhibitors) is one of the limits of these treatments. Close monitoring is required to ensure efficacy and patient safety. In this case study, we report a patient treated for metastatic melanoma with an unusual and innovative combination of dabrafenib (BRAFi) and cobimetinib (MEKi), to manage pyrexia, and lead to complete remission for 19 months.

View Article and Find Full Text PDF

The detection of circulating tumor DNA (ctDNA) by liquid biopsy is taking an increasing role in thoracic oncology management due to its predictive and prognostic value. For non-small cell lung cancer, it allows the detection of molecular mutations that can be targeted with tyrosine kinase inhibitors (TKIs). We report the case of a patient with life-threatening hepatocellular failure and thrombotic microangiopathy at the diagnosis.

View Article and Find Full Text PDF
Article Synopsis
  • Palbociclib is considered suitable for therapeutic drug monitoring due to its narrow therapeutic range and high incidence of serious side effects like neutropenia.
  • A clinical trial involving 58 patients showed a correlation between palbociclib plasma levels and the occurrence of high-grade neutropenia, especially in those with lower neutrophil counts at treatment start.
  • Drug interactions significantly impacted palbociclib plasma levels, with certain co-treatments increasing or decreasing concentrations, but these interactions did not significantly affect the rates of high-grade neutropenia.
View Article and Find Full Text PDF
Article Synopsis
  • The study examines the use of oral targeted therapies (OTTs) for cancer in patients aged 70 and older, highlighting the lack of consensus on appropriate dosing for this demographic.
  • At baseline, 29% of older patients had their OTT doses reduced, with those patients being significantly older and having poorer performance status compared to those who received standard doses.
  • The findings suggest a need for more clinical studies to assess the safety and effectiveness of dose adaptations for older adults receiving OTTs, given that a considerable number still end up on lower-than-recommended doses during treatment.
View Article and Find Full Text PDF

Resistance to castration is a crucial issue in the treatment of metastatic prostate cancer. Kinase inhibitors (KIs) have been tested as potential alternatives, but none of them are approved yet. KIs are subject of extensive metabolism at both the hepatic and the tumor level.

View Article and Find Full Text PDF

Purpose: Pharmacist consultation is unfrequently performed in oncology clinical trials that include patients who often have many co-treatments increasing the risk of drug-drug interactions (DDI). The aim of this study was to determine whether best possible medication history (BPMH) by hospital pharmacist at inclusion and therapeutic drug monitoring could be used for DDI risk evaluation and for current oral targeted therapy management.

Methods: A prospective clinical trial (ALCINA 2, NCT04025541) was carried out in metastatic breast cancer cohort treated by palbociclib to conduct pharmacokinetics-toxicity correlation study.

View Article and Find Full Text PDF

What Is Known And Objective: Sunitinib pharmacokinetics can be influenced by the physio-pathological conditions of individual patients. Therapeutic drug monitoring (TDM) helps to optimize efficacy and reduce the risk of adverse effects. We report on the use of Bayesian analysis to optimize sunitinib blood levels.

View Article and Find Full Text PDF

: Two-thirds of advanced breast cancers are hormone receptor (HR)-positive and human epidermal growth factor receptor 2 (HER2)-negative (HR+/HER2-). Gene mutations in , encoding the PI3K catalytic subunit alpha of phosphatidyl-inositol 3-kinase (PI3K), are a frequent event in this population and are implicated in hormone therapy resistance. Alpelisib is a PI3K-alpha inhibitor and is the first PI3K inhibitor approved, in association with fulvestrant, by the FDA and EMA, based on improved progression-free survival (PFS) versus fulvestrant alone in a randomized phase III trial in HR+/HER2-, -mutated tumors following progression on/after HT.

View Article and Find Full Text PDF

Due to the increasing prescription of oral anticancer therapies, the inpatient care pathway has shifted to an outpatient care pathway. This transformation requires an interdisciplinary coordination to provide a continuum of care and ensure therapeutic monitoring, as well as patient safety. To better support patients on oral anticancer therapies, a task group named "hospital-to-community pharmacist coordination" has been set up to create tools aiming at standardising the information exchanged between ambulatory and hospital pharmacists.

View Article and Find Full Text PDF

Immune check-point inhibitors are drugs that are markedly different from other anticancer drugs because of their indirect mechanisms of antitumoral action and their apparently random effect in terms of efficacy and toxicity. This marked pharmacodynamics variability in patients calls for reconsidering to what extent approved dosing used in clinical practice are optimal or whether they should require efforts for customization in outlier patients. To better understand whether or not dosing could be an actionable item in oncology, in this review, preclinical and clinical development of immune checkpoint inhibitors are described, particularly from the angle of dose finding studies.

View Article and Find Full Text PDF

The CDK4/6 inhibitors palbociclib and ribociclib are kinase inhibitors used in association with hormonal therapy for the management of patients with metastatic breast cancer. Like most kinase inhibitors, therapeutic drug monitoring may be used for personalize their dosage. To this aim, we developed and validated a sensitive and specific HPLC-MS/MS method for palbociclib and ribociclib quantification in blood samples.

View Article and Find Full Text PDF

Reformulation of bread in terms of salt content remains an important measure to help achieve a reduction in salt intake in the population and for the prevention of hypertension and elevated blood pressure (BP). Our fundamental studies on the reduction of salt on dough and bread characteristics showed that wheat breads produced with 0.3 g salt/100 g ("low-salt") were found to be comparable quality to that produced with the typical level of salt (1.

View Article and Find Full Text PDF

Objectives: There is some controversy surrounding theBRAF mutation in patients with lung adenocarcinomas. Although the BRAF mutation is sensitive to BRAF inhibitors, the efficiency of these inhibitors on patients harboring an EGFR/EGFR/BRAF pattern remains unknown.

Materials And Methods: Here, we presented the case of a patient with initial response followed by progression on osimertinib.

View Article and Find Full Text PDF

What Is Known And Objective: Neuroleptic malignant syndrome (NMS) is a rare but severe adverse effect of antipsychotic drugs.

Case Description: We report two cases of NMS highlighted by clinical pharmacists in an emergency unit during summer. One of them was fatal.

View Article and Find Full Text PDF

Background: Oxidative stress is implicated in the etiology of many diseases, but most of clinical trials failed to demonstrate beneficial effects of antioxidant supplementation.

Methods: In the present experiment, we assessed the mean-term effect of wheat germ supplementation, as a dietary source of vitamin E, on antioxidant protection in rat.

Results: Feeding rats a 20% wheat germ diet significantly increased plasma and liver vitamin E levels, compared to the low vitamin E basal diet.

View Article and Find Full Text PDF

Bread is one of the most widely consumed staple foods worldwide. White-wheat bread, largely consumed in France, is made from highly refined flour, which leads to a low nutrient density. Due to a highly porous structure and gelatinised starch, it is easily broken down during digestion, leading to a rapid increase of glucose released into the bloodstream.

View Article and Find Full Text PDF

The current study was undertaken to provide solutions to optimize the unsaponifiable antioxidants content of bread. We report a complete description of changes in wheat carotenoids and vitamin E content from grain to bread and highlight the most important processing steps affecting their level in wheat bread. Major carotenoids losses occurred during kneading.

View Article and Find Full Text PDF

Whole cereal products are the main source of magnesium in human nutrition. Even if wholemeal bread is an important source of Mg, it also contains considerable amounts of phytic acid (PA), a natural chelator that lowers the absorption of trace elements such as Fe or Zn as well as Ca or Mg in cereal products. Significant Mg bioavailability improvement in bread could be supplied by the choice of raw materials and the baking processes of cereals.

View Article and Find Full Text PDF

Whole wheat bread is an important source of minerals but also contains considerable amounts of phytic acid, which is known to impair their absorption. An in vitro trial was performed to assess the effect of a moderate drop of the dough pH (around 5.5) by way of sourdough fermentation or by exogenous organic acid addition on phytate hydrolysis.

View Article and Find Full Text PDF

The physiologic importance of ferulic acid (FA), and notably its antioxidant properties, depends upon its availability for absorption and subsequent interaction with target tissues. Because FA is widely present in cereals, the aim of the present study was to investigate its intestinal and hepatic metabolism in rats by in situ intestinal perfusion model (from 10 to 50 nmol/min), and its bioavailability in supplemented diets (from 10 to 250 micromol/d) or in a complex cereal matrix, i.e.

View Article and Find Full Text PDF