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Background: Peripheral T-cell lymphomas (PTCL) frequently result in relapsed or refractory diseases. Upfront autologous hematopoietic stem cell transplantation (ASCT) using the BEAM (carmustine, etoposide, cytarabine, and melphalan) regimen is recommended. However, relapses are common in PTCL, highlighting a critical need for improved survival outcomes in these patients.

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Extramedullary progression of multiple myeloma (MM) is commonly associated with a poor prognosis. However, optimal management strategies have not yet been established for the treatment of extramedullary involvement in MM. The present study reports the case of a 59-year-old female patient with MM who experienced extramedullary progression after two cycles of first-line VRD (bortezomib, lenalidomide and dexamethasone) therapy.

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Sensitizing cholangiocarcinoma to chemotherapy by inhibition of the drug-export pump MRP3.

Biomed Pharmacother

November 2024

Experimental Hepatology and Drug Targeting (HEVEPHARM), University of Salamanca, Salamanca, Spain; Institute for Biomedical Research of Salamanca (IBSAL), Salamanca, Spain; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Carlos III National Institute of Health, Madrid, Spain.

Aims: Drug export through ABC proteins hinders cancer response to chemotherapy. Here, we have evaluated the relevance of MRP3 (ABCC3) in cholangiocarcinoma (CCA) as a potential target to overcome drug resistance.

Methods: Gene expression was analyzed in silico using the TCGA-CHOL database and experimentally (mRNA and protein) in resected CCA tumors.

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Knockout Transporter Cell Lines to Assess Substrate Potential Towards Efflux Transporters.

AAPS J

July 2024

Division of Applied Regulatory Science, Center for Drug Evaluation and Research, Food and Drug Administration, 10903 New Hampshire Ave., Silver Spring, Maryland, 20993-0002, USA.

P-glycoprotein (P-gp), breast cancer resistance protein (BCRP) and multidrug resistance transporter 2 (MRP2) are efflux transporters involved in the absorption, excretion, and distribution of drugs. Bidirectional cell assays are recognized models for evaluating the potential of new drugs as substrates or inhibitors of efflux transporters. However, the assays are complicated by a lack of selective substrates and/or inhibitors, as well simultaneous expression of several efflux transporters in cell lines used in efflux models.

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