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Research ArticleResearch

Filling of High-Concentration Monoclonal Antibody Formulations into Pre-filled Syringes: Investigating Formulation-Nozzle Interactions To Minimize Nozzle Clogging

Wendy Shieu, Oliver B. Stauch and Yuh-Fun Maa
PDA Journal of Pharmaceutical Science and Technology May 2015, 69 (3) 417-426; DOI: https://doi.org/10.5731/pdajpst.2015.01055
Wendy Shieu
Pharmaceutical Processing and Technology Development, Genentech, a member of the Roche Group, South San Francisco, CA
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Oliver B. Stauch
Pharmaceutical Processing and Technology Development, Genentech, a member of the Roche Group, South San Francisco, CA
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Yuh-Fun Maa
Pharmaceutical Processing and Technology Development, Genentech, a member of the Roche Group, South San Francisco, CA
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  • For correspondence: maay@gene.com
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Abstract

Syringe filling of high-concentration/viscosity monoclonal antibody formulations is a complex process that is not fully understood. This study, which builds on a previous investigation that used a bench-top syringe filling unit to examine formulation drying at the filling nozzle tip and subsequent nozzle clogging, further explores the impact of formulation–nozzle material interactions on formulation drying and nozzle clogging. Syringe-filling nozzles made of glass, stainless steel, or plastic (polypropylene, silicone, and Teflon®), which represent a full range of materials with hydrophilic and hydrophobic properties as quantified by contact angle measurements, were used to fill liquids of different viscosity, including a high-concentration monoclonal antibody formulation. Compared with hydrophilic nozzles, hydrophobic nozzles offered two unique features that discouraged formulation drying and nozzle clogging: (1) the liquid formulation is more likely to be withdrawn into the hydrophobic nozzle under the same suck-back conditions, and (2) the residual liquid film left on the nozzle wall when using high suck-back settings settles to form a liquid plug away from the hydrophobic nozzle tip. Making the tip of the nozzle hydrophobic (silicone-coating on glass and Teflon-coating stainless steel) could achieve the same suck-back performance as plastic nozzles. This study demonstrated that using hydrophobic nozzles are most effective in reducing the risk of nozzle clogging by drying of high-concentration monoclonal antibody formulation during extended nozzle idle time in a large-scale filling facility and environment.

LAY ABSTRACT: Syringe filling is a well-established manufacturing process and has been implemented by numerous contract manufacturing organizations and biopharmaceutical companies. However, its technical details and associated critical process parameters are rarely published. Information on high-concentration/viscosity formulation filling is particularly lacking. This study is the continuation of a previous investigation with a focus on understanding the impact of nozzle material on the suck-back function of liquid formulations. The findings identified the most critical parameter—nozzle material hydrophobicity—in alleviating formulation drying at the nozzle tip and eventually limiting the occurrence of nozzle clogging during the filling process. The outcomes of this study will benefit scientists and engineers who develop pre-filled syringe products by providing a better understanding of high-concentration formulation filling principles and challenges.

  • Prefilled syringe
  • High-concentration monoclonal antibody
  • Suck-back
  • Hydrophilic nozzles
  • Hydrophobic nozzles
  • Nozzle clogging
  • © PDA, Inc. 2015
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PDA Journal of Pharmaceutical Science and Technology: 69 (3)
PDA Journal of Pharmaceutical Science and Technology
Vol. 69, Issue 3
May/June 2015
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Filling of High-Concentration Monoclonal Antibody Formulations into Pre-filled Syringes: Investigating Formulation-Nozzle Interactions To Minimize Nozzle Clogging
Wendy Shieu, Oliver B. Stauch, Yuh-Fun Maa
PDA Journal of Pharmaceutical Science and Technology May 2015, 69 (3) 417-426; DOI: 10.5731/pdajpst.2015.01055

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Filling of High-Concentration Monoclonal Antibody Formulations into Pre-filled Syringes: Investigating Formulation-Nozzle Interactions To Minimize Nozzle Clogging
Wendy Shieu, Oliver B. Stauch, Yuh-Fun Maa
PDA Journal of Pharmaceutical Science and Technology May 2015, 69 (3) 417-426; DOI: 10.5731/pdajpst.2015.01055
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Keywords

  • Prefilled syringe
  • High-concentration monoclonal antibody
  • Suck-back
  • Hydrophilic nozzles
  • Hydrophobic nozzles
  • nozzle clogging

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