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Related Concept Videos

Drug Products: Biologics, Biosimilars and Interchangeables01:28

Drug Products: Biologics, Biosimilars and Interchangeables

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Body:Biologics, derived from living sources such as humans, animals, or microorganisms, represent a significant category of pharmaceuticals. These complex molecules, developed through advanced biotechnological methods or purified from natural sources, include essential medical treatments like insulin and growth hormones. The complexity of biologics arises from their large molecular structures and the intricate processes required for their production, making them distinct from conventional...
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Marcia's Theory of Identity Status01:26

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James Marcia's identity status model provides a framework for understanding how adolescents navigate identity formation through varying degrees of exploration and commitment. Marcia's model builds on Erik Erikson's theories of psychosocial development, focusing specifically on how adolescents reconcile individual aspirations with societal expectations. His model describes identity formation as a dynamic process where adolescents move between different states depending on their level...
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Electrical Current01:10

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Electrical current is defined as the rate at which charge flows. When there is a large current present, such as that used to run a refrigerator, a large amount of charge moves through the wire in a small amount of time. If the current is small, such as that used to operate a handheld calculator, a small amount of charge moves through the circuit over a long period of time. The SI unit for current is the ampere (A), named for the French physicist André-Marie Ampère (1775–1836).
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Current Density01:21

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The total amount of current flowing through one unit value of a cross-sectional area is referred to as current density. If the current flow is uniform, the amount of current flowing through a conductor is the same at all points along the conductor, even if the conductor area varies. The current density consists of the local magnitude and direction of the charge flow, which varies from point to point. Current density is measured in amperes per meter square, and direction is defined as the net...
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Since eddy currents occur only in conductors, magnets can separate metals from other materials. For example, in a recycling center, trash is dumped in batches down a ramp, beneath which lies a powerful magnet. Conductors in the trash are slowed by eddy currents, while nonmetals in the trash move on, separating from the metals. This works for all metals, not just ferromagnetic ones.
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Displacement Current01:19

Displacement Current

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Ampère's law, in its usual form, does not work in places where the current changes with time and is not steady. Thus, Maxwell suggested including an additional contribution, called the displacement current, Id, to the real conduction current I.
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The biosimilars journey: current status and ongoing challenges.

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Biosimilar products have gained regulatory approval globally, with established evidence supporting their development. However, challenges in regulatory harmony, interchangeability, and orphan disease applications persist.

Keywords:
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Area of Science:

  • Biopharmaceutical Development
  • Regulatory Science
  • Pharmacoeconomics

Background:

  • Biosimilar products are increasingly approved and marketed worldwide, with significant experience gained by regulatory agencies like the Food and Drug Administration (FDA) and the European Medicines Agency (EMA).
  • Extensive knowledge supports the totality of evidence approach for biosimilarity assessment and regulatory approval.
  • Extrapolation of indications has been demonstrated as viable with careful analytical evaluation.

Purpose of the Study:

  • To review the current landscape of biosimilar development and regulatory approval.
  • To identify and discuss persistent challenges and unanswered questions in the biosimilar field.
  • To highlight areas requiring further attention, including regulatory harmony, interchangeability, and biosimilars for orphan diseases.

Main Methods:

  • Review of existing regulatory approvals and scientific literature on biosimilar products.
  • Analysis of established methodologies for biosimilarity assessment, including totality of evidence and clinical trial designs.
  • Discussion of regulatory challenges and potential future directions.

Main Results:

  • A substantial body of evidence supports the scientific and regulatory basis for biosimilar development.
  • Manufacturer choices for study designs show homogeneity, indicating a consensus on best practices.
  • Extrapolation of indications is a proven viable strategy when supported by rigorous analysis.

Conclusions:

  • While significant progress has been made, challenges in regulatory harmony, naming conventions, interchangeability designations, and the development of biosimilars for orphan diseases require ongoing attention.
  • Further harmonization of global regulatory standards is crucial for the continued growth and accessibility of biosimilar medicines.
  • Continued research and regulatory dialogue are essential to address remaining hurdles and optimize the biosimilar pathway.