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      Efecto de los fármacos modificadores del PH sobre los inhibidores de la tirosin quinasa: contrastando información Translated title: Effect of gastric-acid-reducing agents on the tyrosine kinasa inhibitors: contrasting information

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          Abstract

          RESUMEN Objetivos: Los inhibidores de la tirosin quinasa (ITK) comprenden un conjunto de moléculas ampliamente utilizadas actualmente en onco-hematología. Los ITK han supuesto una ventaja para los pacientes, de forma que la administración oral favorece su autonomía, pero a su vez, su absorción gastrointestinal y, por ende, su biodisponibilidad, puede verse alterada por el PH-gástrico. Las interacciones con los fármacos modificadores del PH son un problema conocido y una consulta frecuente. El objetivo del estudio fue analizar las interacciones ITK-fármacos modificadores del PH-gástrico y las discrepancias en diferentes bases de datos. Con los resultados, se elaboró una tabla, para proporcionar a los pacientes la información correcta y consensuada, y no generar así inseguridad que comprometa la adherencia al tratamiento o confianza hacia el profesional sanitario. Métodos: Se exportaron de la web de la Agencia Española del Medicamento y Productos Sanitarios los fármacos clasificados como ITK directos (ATC: L01XE). Se consultó la interacción de éstos con los IBP, Anti-H2 y antiácidos en diversas fuentes y se resumieron los hallazgos. Resultados y conclusiones: Para establecer una fuerte recomendación, es necesario consultar varias bases de datos, ya que las discrepancias o la información insuficiente pueden llevar a recomendaciones erróneas. Es importante establecer un consenso entre profesionales para realizar la recomendación correcta, y no ver comprometida la eficacia del tratamiento, con las importantes consecuencias que ello conllevaría.

          Translated abstract

          SUMMARY Objectives: Tyrosine kinase inhibitors (TKIs) include a group of molecules widely used in oncohematology today. Using the oral administration route of TKIs offers an advantage for the patient; favoring patient autonomy, however, oral administration also causes relevant new problems. Gastrointestinal absorption and, therefore, bioavailability, can be altered by gastric PH. Interactions of these TKIs with gastric acid reducing (GAR) drugs are a known problem and a frequent query in clinical practice. The aim was to analyze ITK-GAR drugs interactions and discrepancies in different databases. Based on the results, a table was elaborated to provide the correct and consensed information, and thus not generate insecurity that compromises the adherence to the treatment or trust towards the healthcare professional. Methods: Drugs classified as direct ITKs (ATC: L01XE) were exported from the Spanish Agency for Medicines and Health Products website. Their interaction with PPIs, Anti-H2 and antacids was consulted in different databases and findings were summarized. Results and conclusions: To establish a strong recommendation, it is necessary to consult several databases, because of discrepancies or insufficient information can lead to erroneous recommendations. It is important to establish a consensus among professionals to make the correct recommendation, and not compromising the effectiveness of the treatment, which would entail important consequences.

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          Tyrosine kinases as targets for cancer therapy.

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            Drug absorption interactions between oral targeted anticancer agents and PPIs: is pH-dependent solubility the Achilles heel of targeted therapy?

            A majority of the novel orally administered, molecularly targeted anticancer therapies are weak bases that exhibit pH-dependent solubility, and suppression of gastric acidity with acid-reducing agents could impair their absorption. In addition, a majority of cancer patients frequently take acid-reducing agents to alleviate symptoms of gastroesophageal reflux disease, thereby raising the potential for a common but underappreciated drug-drug interaction (DDI) that could decrease the exposure of anticancer medication and result in subsequent failure of therapy. This article is a review of the available clinical literature describing the extent of the interaction between 15 orally administered, small-molecule targeted anticancer therapies and acid-reducing agents. The currently available clinical data suggest that the magnitude of this DDI is largest for compounds whose in vitro solubility varies over the pH range 1-4. This range represents the normal physiological gastric acidity (pH ~1) and gastric acidity while on an acid-reducing agent (pH ~4).
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              Drug-drug interactions with tyrosine-kinase inhibitors: a clinical perspective.

              In the past decade, many tyrosine-kinase inhibitors have been introduced in oncology and haemato-oncology. Because this new class of drugs is extensively used, serious drug-drug interactions are an increasing risk. In this Review, we give a comprehensive overview of known or suspected drug-drug interactions between tyrosine-kinase inhibitors and other drugs. We discuss all haemato-oncological and oncological tyrosine-kinase inhibitors that had been approved by Aug 1, 2013, by the US Food and Drug Administration or the European Medicines Agency. Various clinically relevant drug interactions with tyrosine-kinase inhibitors have been identified. Most interactions concern altered bioavailability due to altered stomach pH, metabolism by cytochrome P450 isoenzymes, and prolongation of the QTc interval. To guarantee the safe use of tyrosine-kinase inhibitors, a drugs review for each patient is needed. This Review provides specific recommendations to guide haemato-oncologists, oncologists, and clinical pharmacists, through the process of managing drug-drug interactions during treatment with tyrosine-kinase inhibitors in daily clinical practice.
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                Author and article information

                Journal
                ofil
                Revista de la OFIL
                Rev. OFIL·ILAPHAR
                Organización de Farmacéuticos Ibero-Latinoamericanos (Madrid, Madrid, Spain )
                1131-9429
                1699-714X
                2021
                : 31
                : 1
                : 32-35
                Affiliations
                [2] Ciudad Real orgnameHospital General Universitario de Ciudad Real orgdiv1Servicio de Farmacia España
                [1] Alcázar de San Juan Ciudad Real orgnameHospital General Mancha Centro orgdiv1Servicio de Farmacia España
                Article
                S1699-714X2021000100008 S1699-714X(21)03100100008
                10.4321/s1699-714x2021000100008
                823fdd55-00f4-4e79-a8bb-1dfaf11ed31d

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

                History
                : 23 February 2020
                : 17 January 2020
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 9, Pages: 4
                Product

                SciELO Spain

                Categories
                Originales

                Tyrosine kinase inhibitors,interacción,fármacos modificadores del PH,Inhibidores tirosin quinasa,drug interactions,acid-reducing agents

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