Data availability
The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.
Abbreviations
- DP:
-
Drug product
- ES:
-
ETFE size
- ETFE:
-
Ethylene tetrafluoroethylene
- FTIR:
-
Fourier transform infrared spectroscopy
- MDRS:
-
Morphologically directed Raman spectroscopy
- mAb:
-
Monoclonal antibody
- NIST:
-
National Institutes of Standards and Technology
- PCA:
-
Principal component analysis
- PC:
-
Principal component
- PS:
-
Polystyrene
- RCA:
-
Root cause analysis
- USP:
-
United States Pharmacopeia
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Acknowledgements
This project was supported partly by an appointment to the Research Participation Program at the Office of Pharmaceutical Quality Research/Office of Pharmaceutical Quality/Center for Drug Evaluation and Research, FDA, administered by the Oak Ridge Institute for Science and Education through an interagency agreement between the U.S. Department of Energy and FDA. Funded by the Regulatory Science & Review Enhancement Program (RSR). We thank Mina Chang (FDACDEROPQOPMA) for help with the MDRS experiments.
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The authors declare no competing interests.
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This manuscript reflects the views of the author and should not be construed to represent FDA’s or NIST’s views or policies. Certain commercial equipment, instruments, or materials are identified in this manuscript to foster understanding. Such identification does not imply recommendation or endorsement by FDA or the National Institute of Standards and Technology, nor does it imply that the materials or equipment identified are necessarily the best available for the purpose. This work was carried out in part in the NIST Center for Nanoscale Science and Technology NanoFab.
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de Luna, I.F., Telikepalli, S.N., Carrier, M. et al. Root cause analysis investigation of visible particulates in therapeutic protein drug products using morphologically directed Raman spectroscopy. Sci Rep (2025). https://doi.org/10.1038/s41598-025-97097-x
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DOI: https://doi.org/10.1038/s41598-025-97097-x
