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Cheryl Johnson

Cheryl Johnson

Cheryl Johnson is the Commercial Development Manager of Biotechnology at Alcami. She has more than 15 years of industry experience in research and manufacturing scale laboratories, and her areas of expertise include analytical and preparative chromatography, mass spectrometry, method development and validation with specialized knowledge of regulatory compliance relating to extractables and leachables. Cheryl joined Alcami in 2014 as a scientist and is a technical lead for Alcami's Biotechnology and Structural Chemistry related offerings.

Recent Posts by Cheryl Johnson:

ALCAMI MASTER CLASS WEBINAR: Early Phase Development of Biologics

Join Alcami for a webinar on Tuesday, April 16, 2019 to learn more about early phase development of biologics.

By some estimates, the pre-approval cost of drug development is a staggering $2.5 billion per drug and takes an average of ten years from discovery to reach market. For novel therapeutics, the highest risk is during early phase development, and biologics are no different. However, biologics drug product manufacturers face some unique challenges because they are made from biological sources. Some of these challenges are batch-to-batch consistency, changing impurity profiles, and molecular instability.

Topics: Webinars Biologics

Editorial: Outsourcing Analytical Testing - The Gateway to Drug Manufacturing

Alcami recently contributed to a special feature in Drug Development and Delivery magazine titled "Outsourcing Analytical Testing: The Gateway to Drug Manufacturing."

Alcami: Customizing Programs to Meet Accelerated Product Timelines

Alcami is a CDMO that offers fully integrated, comprehensive analytical testing to support technologies for every stage of development. Its laboratory services platform is comprised of analytical testing and development services for small molecule and biologics drug products, as well as specialized offerings such as elemental impurities, abuse deterrence, and extractables and leachables. In addition, formulations development scientists address challenges related to new chemical entities.

Topics: Thought Leadership Editorials Analytical Testing

Editorial: A Practical Approach to Extractables & Leachables

Alcami recently authored an article featured in Drug Development & Delivery titled "A Practical Approach to Extractables & Leachables." 

INTRODUCTION

The study of extractables and leachables (E&L) has been evolving for many years. As pharmaceutical manufacturers, packaging vendors, and regulatory agencies gain more knowledge of extractable compounds, the scope of E&L guidelines grows with it. Many of the case studies that initiated interest in extractables and leachables are based on primary packaging. In some cases, the secondary or tertiary packaging were identified as sources of leachables. As a result, the primary emphasis of extractables screens has been on the packaging systems. The approach to these screens is well established. The first iterations of regulatory guidance addressed the common packaging materials in the United States Pharmacopeia (USP) chapter <661>, which relied heavily on physiochemical testing to characterize the material of construction but did not directly address extractables testing of the final packaging materials in detail. With advancements in the manufacture of plastics and increasing variety of base polymers used for packaging systems, it became evident that more specific guidelines are needed.

Topics: Thought Leadership Extractables & Leachables Editorials

The Top Five Most Asked Extractables and Leachables Questions Answered

Agency expectations are quickly evolving for the evaluation of drug product packaging and delivery systems and the surfaces used during manufacture with respect to potential leachables. Every new and generic drug product must be assessed for extractables and leachables (E&L). In this top five list, Alcami experts will address the extractables and leachables questions our experts hear most.

  1. What is the difference between an extractable and a leachable?
    Extractables are compounds that can be extracted from a packaging component, delivery system, or manufacturing surface via laboratory manipulation, such as exposure to solvents or heat. Extractables can be potential leachables. Leachables are compounds that passively migrate into the drug product over time, as a result of direct contact from the packaging system, in-use componentry, or a manufacturing surface.

Topics: Extractables & Leachables Analytical Testing Analytical Development

White Paper: A Practical Approach to Extractables and Leachables on Manufacturing Surfaces

The study of extractables and leachables is among the fastest-evolving disciplines in the pharmaceutical industry. Until recently, the primary focus of these studies has been components in direct contact with the drug product for extended periods, such as the primary packaging, or those that contact the formulation during administration, known as in-use componentry. However, the components used in manufacturing are of increasing interest as sources of potential leachables. Many components are single-use systems (SUS), polymeric in construction, and pre-treated prior to use. Each of these factors increase the potential for leachable compounds. In order to evaluate materials for potential leachable compounds, one must leverage a scientifically rigorous study design against the specific potential for drug product and packaging/surface interaction. 

Topics: Thought Leadership Resource Center Extractables & Leachables Drug Product Extractables Studies Analytical Evaluation Threshold