Generation of pralatrexate resistant T‐cell lymphoma lines reveals two patterns of acquired drug resistance that is overcome with epigenetic modifiers

L Scotto, C Kinahan, B Casadei… - Genes …, 2020 - Wiley Online Library
While pralatrexate (PDX) has been successfully developed for the treatment of T‐cell
lymphoma, the mechanistic basis for its T‐cell selectivity and acquired resistance remains …

[HTML][HTML] Characterization of newly established Pralatrexate-resistant cell lines and the mechanisms of resistance

K Oiwa, N Hosono, R Nishi, L Scotto, OA O'Connor… - BMC cancer, 2021 - Springer
Background Pralatrexate (PDX) is a novel antifolate approved for the treatment of patients
with relapsed/refractory peripheral T-cell lymphoma, but some patients exhibit intrinsic …

Pralatrexate pharmacology and clinical development

E Marchi, M Mangone, K Zullo, OA O'Connor - Clinical Cancer Research, 2013 - AACR
Folates are well known to be essential for many cellular processes, including cellular
proliferation. As a consequence, antifolates, the fraudulent mimics of folic acid, have been …

Pralatrexate: an emerging new agent with activity in T-cell lymphomas

OA O'Connor - Current opinion in oncology, 2006 - journals.lww.com
Pralatrexate is an antifolate designed to be internalized more rapidly than other traditional
antifolates. Preclinical studies have demonstrated its superiority to methotrexate, and early …

[HTML][HTML] PROPEL: a multi-center phase 2 open-label study of pralatrexate (PDX) with vitamin B12 and folic acid supplementation in patients with replapsed or …

OA O'Connor, B Pro, L Pinter-Brown, L Popplewell… - Blood, 2008 - Elsevier
Background: Pralatrexate (PDX) is a novel targeted antifolate that is designed to accumulate
preferentially in cancer cells. Pralatrexate selectively enters cells expressing RFC-1, a …

[HTML][HTML] Pralatrexate Induces Responses in Patients with Highly Refractory Peripheral T-Cell Lymphoma (PTCL).

KJ Savage, AR Shustov, A Goy, SM Horwitz, B Pro… - Blood, 2009 - Elsevier
Abstract Abstract 1678 Poster Board I-704 Background The outcome of patients with PTCL is
poor and the majority of patients ultimately have refractory disease to a variety of agents …

Pralatrexate (10-Propargyl-10-Deazaaminopterin (PRX)), a Novel Antifolate, Effects Durable Complete Remissions (CR) in Patients with a Diversity of Drug Resistant …

O O'Connor, PA Hamlin, E Neylon, C Moskowitz… - 2005 - ashpublications.org
PRX belongs to a new class of anti-folates designed to have improved affinity for the
reduced folate carrier. A phase 2 study at 135 mg/m2 given on an every other week (w) …

[HTML][HTML] Pralatrexate reverses the trend to progressive resistance to successive systemic treatment regimens in patients with relapsed/refractory peripheral T-cell …

OA O'Connor, C Haouin, PL Zinzani, C Gisselbrecht… - Blood, 2010 - Elsevier
Abstract Abstract 4881 Background: In a wide range of malignancies, including nonHodgkin
lymphoma (NHL), treatment-naive patients generally show a greater response to …

A phase '2-1-2'study of two different doses and schedules of pralatrexate, a high affinity substrate for the reduced folate carrier (RFC-1), in patients with relapsed or …

O O'Connor, P Hamlin, C Portlock, C Moskowitz… - Molecular Cancer …, 2007 - AACR
C85 Pralatrexate is a novel folate analogue designed to have high affinity for the reduced
folate carrier (RFC-1), exhibiting improved internalization and efficacy over other …

[HTML][HTML] Pralatrexate Is Active in Cutaneous T-Cell Lymphoma (CTCL): Results of a Multicenter, Dose-Finding Trial.

SM Horwitz, M Duvic, Y Kim, JM Zain, MJ Lechowicz… - Blood, 2009 - Elsevier
Abstract Abstract 919 Background: Pralatrexate enters cancer cells via the reduced folate
carrier-1 (RFC-1) and is efficiently polyglutamated by folylpolyglutamyl synthetase (FPGS) …