Drug-induced interstitial pneumonitis (DIP) is an inflammation of the lung interstitium, emerging due to the
pneumotoxic effects of pharmaceuticals. The diagnosis is challenging due to nonspecific clinical presentations and
limited testing. Therefore, identifying the risk of drug-related pneumonitis is required during the early phases of drug
development. This study aims to estimate DIP using binary quantitative structure-toxicity relationship (QSTR) models.
The dataset was composed of 468 active pharmaceutical ingredients (APIs). Five critical modeling descriptors were
chosen. Then, four machine-learning (ML) algorithms were conducted to build prediction models with the selected
molecular identifiers. The developed models were validated using the internal 10-fold cross-validation and external test
set. The Logistic Regression (LR) algorithm outperformed all other models, achieving 95.72% and 94.68% accuracy in
internal and external validation, respectively. Additionally, the individual effect of each descriptor on the model output
was determined using the SHapley Additive exPlanations (SHAP) approach. This analysis indicated that the
pneumonitis effects of drugs might predominantly be attributed to their atomic masses, polarizabilities, van der Waals
volumes, surface areas, and electronegativities. Apart from the strong model performance, the SHAP local explanations
can assist molecular modifications to reduce or avoid the risk of pneumonitis for each molecule in the test set.
Contributing to the drug safety profile, the current classification model can guide advanced pneumotoxicity testing and
reduce late-stage failures in drug development.
Pulmonary toxicity computational toxicology QSTR QSAR machine learning SHapley Additive exPlanations
Primary Language | English |
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Subjects | Pharmaceutical Toxicology |
Journal Section | Articles |
Authors | |
Publication Date | |
Submission Date | December 1, 2024 |
Acceptance Date | December 17, 2024 |
Published in Issue | Year 2025 Volume: 29 Issue: 1 |