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Related Concept Videos

Preclinical Development: Overview01:28

Preclinical Development: Overview

Preclinical development consists of a series of tests that ensure the safety and efficacy of a new therapeutic compound before it is tested in humans. There are four main phases to this process. First, safety pharmacology tests are conducted to ensure the drug does not produce any acutely harmful effects. These tests examine parameters such as bronchoconstriction, cardiac dysrhythmias, blood pressure changes, and ataxia. Next, preliminary toxicological testing is performed to determine the...
Clinical Trials: Overview01:11

Clinical Trials: Overview

Clinical development focuses on how the drug will interact with the human body and encompasses four key phases of clinical trials, each serving a specific purpose in assessing the safety and effectiveness of new drugs. These phases overlap and build upon one another. Phase I involves a small group of healthy volunteers (typically 20-80 individuals) or, in cases where significant toxicity is expected, patients with the targeted disease, such as cancer or AIDS. The volunteers are tested for...
Treatment for Pulmonary Arterial Hypertension: Prostacyclin Receptor Agonists01:23

Treatment for Pulmonary Arterial Hypertension: Prostacyclin Receptor Agonists

Prostacyclin receptor agonists are a class of therapeutic agents integral to managing pulmonary arterial hypertension (PAH). These drugs operate by mimicking the action of prostaglandin I2, or PGI2, a naturally occurring compound in the body.
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Antiplatelet Drugs: Prostaglandin Synthesis, P2Y12 and Glycoprotein IIb/IIIa Inhibitors01:20

Antiplatelet Drugs: Prostaglandin Synthesis, P2Y12 and Glycoprotein IIb/IIIa Inhibitors

Antiplatelet drugs emerge as frontline defenders against the insidious threat of thromboembolic diseases, where abnormal clots obstruct vital blood vessels. These drugs stand as bulwarks, inhibiting platelet aggregation and clot formation, thereby mitigating the risk of life-threatening conditions like myocardial infarction, coronary artery disease, and thrombotic strokes.
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Antiprotozoal Agents01:21

Antiprotozoal Agents

Leishmaniasis is a widespread parasitic disease caused by several Leishmania species. It affects millions of people each year and remains a major public health problem in endemic regions. First-line treatment relies on pentavalent antimonials, including meglumine antimoniate and sodium stibogluconate. Even so, how these drugs work has not been fully clear, especially their interaction with parasite-specific biochemical pathways. One key target is trypanothione reductase (TR), an enzyme that...
Drug Administration and Therapy Phases: Overview01:26

Drug Administration and Therapy Phases: Overview

Drugs, the chemical agents used in diagnosing, treating, or preventing diseases, undergo a four-phase process of development: pharmaceutic, pharmacokinetics, pharmacodynamics, and therapeutic.
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The pharmacokinetic phase...

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Pralatrexate: basic understanding and clinical development.

Jasmine Zain1, Owen O'Connor

  • 1NYU Langone Medical Center-Hematology/Oncology, 160 East 34th Street, New York 10016, USA. jasmine.zain@nyumc.org

Expert Opinion on Pharmacotherapy
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Pralatrexate (PDX) is a novel antifolate approved for relapsed/refractory peripheral T-cell lymphomas (PTCL). Its unique design offers superior activity, with ongoing studies exploring combination therapies for hematological malignancies.

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Area of Science:

  • Oncology
  • Pharmacology
  • Hematology

Background:

  • Pralatrexate (PDX) is a novel antifolate agent.
  • It is approved for treating relapsed and refractory peripheral T-cell lymphomas (PTCL).
  • PDX represents a significant advancement as the sole approved therapy for PTCL patients.

Purpose of the Study:

  • To review the clinical development of PDX from synthesis to FDA approval.
  • To elucidate the biochemical basis for PDX's superior antifolate activity.
  • To summarize preclinical and clinical data, including combination studies.

Main Methods:

  • Review of PDX synthesis and FDA approval process.
  • Analysis of biochemical differences between PDX and other antifolates.
  • Examination of preclinical data and clinical trial outcomes (Phase II pivotal trial).

Main Results:

  • Clinical trials established a safe dosage and safety profile for PDX.
  • FDA approval for PTCL was based on positive results from a pivotal Phase II trial.
  • PDX demonstrated activity in T-cell lymphomas and non-small-cell lung cancer.

Conclusions:

  • PDX is a rationally designed antifolate with high affinity for RFC-1 and folylpolyglutamyl synthetase.
  • The agent shows efficacy in T-cell lymphomas and non-small-cell lung cancer.
  • PDX is under investigation in combination regimens for hematological malignancies.