Photostability of Biologics

When:  Dec 7, 2023 from 12:30 to 14:00 (ET)
Associated with  Sterile Products Community

Sterile products community invites all the members for the webinar on ‘Photostability of Biologics’ on Dec 7, 2023, at 12.30 pm EST. Please see the details and register using the link below:

Topic: Photostability of Biologics

When: Thursday, December 7, 2023, 12:30 PM EST


Speaker: Sreedhara Alavattam, Genentech


Monoclonal antibodies (mAbs) are exposed to light during drug product (DP) manufacturing and the acceptable levels of light exposure need to be determined based on the impact on product quality. Based on data published in recent literature it is evident that mAbs are very photosensitive. Surface active tryptophans have been implicated in several photochemical mechanisms, including in “antibody-catalyzed water oxidation pathways”. These mechanisms and underlying photochemical concepts will be discussed as they pertain to mAb stability.

ICH Q1B conditions were developed based on small-molecule pharmaceuticals and have been shown to be quite harsh for mAbs. It is our recommendation to conduct an appropriate ambient light study, relevant to manufacturing conditions, on individual protein products during development to determine their photostability. A comprehensive assessment of fill/finish facilities should be performed, including quantifying UV and visible light.

Learning Objectives:

  • How light conditions affect protein stability
  • Factors to consider designing room temperature/room light studies representative of manufacturing conditions for your molecule
  • How biophysical properties of a molecule influence light sensitivity
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