4 papers
Subgroup Identification and Individualized Treatment Policies: A Tutorial on the Hybrid Two-Stage Workflow
Nan Miles Xi, Xin Huang, Lin Wang
Patients in clinical studies often exhibit heterogeneous treatment effect (HTE). Classical subgroup analyses provide inferential tools to test for effect modification, while modern…
Leveraging Large Language Models for Rare Disease Named Entity Recognition
Nan Miles Xi, Yu Deng, Lin Wang
Named Entity Recognition (NER) in the rare disease domain poses unique challenges due to limited labeled data, semantic ambiguity between entity types, and long-tail distributions.…
A Two-Step Test to Identify Zero-Inflated Biomarkers in Early-Phase Clinical Trials
Nan Miles Xi, Lin Wang
In early-phase clinical trials, a predictive biomarker may identify subgroups that benefit from an experimental therapy, even when the overall average treatment effect is negligibl…
Synergy-Informed Design of Platform Trials for Combination Therapies
Nan Miles Xi, Man Mandy Jin, Lin Wang +1
Combination drug therapies hold significant promise for enhancing treatment efficacy, particularly in fields such as oncology, immunotherapy, and infectious diseases. However, desi…